Flamethrower?

[Coyote]

Has anyone put/made a Exhaust flamethrower on their bike. Is it any good, Is it a stupid idea, does it cost too much?

[vifferman]

Has anyone put/made a Exhaust flamethrower on their bike. Is it any good, Is it a stupid idea, does it cost too much?Oh yeah - I've had them on all my bikes.
Great idea - you can use them to stop people following too closely, cook your dinner over them, warm yourself up on cold nights, use them to burn off scrub, strip paint off things, etc. etc.
No - they don't cost too much, but you need to wear asbestos bike shorts. Just in case.

[jrandom]

Bit of twiddling with your mixture screws and it'll be all on, dude.

Let me know how you go...

[Coyote]

No - they don't cost too much,
Exactly how much?

[jrandom]

Exactly how much?

Turkey baster full of kerosene stuffed down your jacket. Reach back while riding, squirt into exhaust. Job's a good 'un.

[Coyote]

Argh, just seen some prices for some kitsets. Can anyone tell me how to make your own?

[jrandom]

Jeepers.

You're *serious*, aren't you.

[Coyote]

http://www.trademe.co.nz/Trade-Me-Motors/Car-parts/Performance/Exhaust/auction-19851205.htm
If only I had 70 bucks

And yeah, I'm fairly serious

[Hitcher]

Has anyone put/made a Exhaust flamethrower on their bike. Is it any good, Is it a stupid idea, does it cost too much?
No. Not applicable. Yes. Of course, in more ways than you could possible imagine.

[Hitcher]

NOTE: This kit is for off-road, show, or recreational use only. Not for street use. We are not responsible for property damage or injuries caused by this kit.
Yeah, right!

[Motu]

there is a simple to undeerstand instruction that comes with it..it takes u step by step..so i would say tht some1 tht know abit of the stuff under the hood could easly master this task

Mr Coka mita sniffed a few lines too many.

Off road use only - choice,that's me...I'm gunna fit one and try it out in Woodhill Forest this summer.

[MSTRS]

Has anyone put/made a Exhaust flamethrower on their bike. Is it any good, Is it a stupid idea, does it cost too much?
WTF4 - who cares - I'd say so - any amount would be 2 much

[Riff Raff]

Is it a stupid idea

What do you think????!!!!!!! :no: :no: :no:

[Coyote]

Well, of course its a stupid idea, thats why I thought of it

Anyway, I'm going to put my money into something more worth while. Probebly a pair of GPR-70s

[Two Smoker]

Yep, there is another way... its called getting a V-twin thou + rich mix + after market pipes + rolling of the gas = flames.........hehehe

[Coyote]

Yep, there is another way... its called getting a V-twin thou + rich mix + after market pipes + rolling of the gas = flames.........hehehe
Damn, I got a inline 4 and stock pipe

[Coyote]

This is the pic that got me interested

[Hitcher]

I hope it sets light to his plastic bumper...

[カワサキキド]

Argh, just seen some prices for some kitsets. Can anyone tell me how to make your own?
If you can't figure out how to make something so simple, then you shouldn't.

And GPR70's are great.

[Coyote]

I have a limited knowlege and could possibly make one, but I'ld probebly end up making something that will blow my ass off

Anyway, It was just a stupid idea off the top of my head, I doubt I'll go any further with it

[Slingshot]

I was thinking of the exact same thing a couple of days ago...I wasn't seriously considering it though:no:

I remember I followed a Skyline Godzilla over the Takas a while back and every time he got on the gas flames came out the exhaust.

The set-up I imagined was to have a small separate container full of gas with a little pump on it, then run a small brass tube with a brass spray jet at the end. The brass tube would run inside the exhaust almost to the end. Hit a switch to turn the pump on and bob's ya uncle.


Some of the problems I haven't yet considered are:
Do you need to shut off the spray jet...when the pump shuts off there would still be fuel in the line, I assume this would vaporise and force it's way out the tube anyway so may not be a concern.
Blow back into the tube causing the system to explode.
Getting a WOF with this kinda system installed.
Melting the plastic fairing.
Burning my pillion's arse.
Burning my arse.
Blowing up the whole bike.
Causing a forest fire.
Having flames sucked back into the engine and burning stuff that shouldn't be burned.

As you can see I gave this very little thought cause although I think it would look cool, the risks are just too great.

Now...I don't want anyone to flame me for my comments here:killingme

[slob]

Dunno about flame-throwers per se, but I've had a couple of bikes (TL1000S, KLX650) that did pretty mean backfires...

GPR70s are awesome on dry roads but a bit unreliable in the wet (during brisk wet-riding that is, not commuting).

[Wonko]

My two cent's and rusty memory worth.

Drill a hole into your muffler, secure a spark plug in to it conected to a switch and the battery, and run your bike mixture rich. Your exhust will have unburt fuel in it, give it lot's of revs and then switch on the spark plug.

Disclamier, this may blow your muffler/ arse up, do damage to your bike, etc. Do so at own risk.

[Slingshot]

This looks cool...

http://www.gotflames.net/Images/GalleryLarge_Images/home_lft2.jpg















This Doesn't
http://www.gotflames.net/Images/GalleryLarge_Images/pyo.jpg

[Darryboy]

Looks like the fool in that second shot is trying to blow out the flames :eek:

[Skunk]

Friend tried once - spark plug in the tail pipe, fuel injector at headers, electric fuel pump. So so success. :moon:

Looked best when working but was more fun when it wasn't :blah:

[avgas]

my Gb was brilliant at it, had a mild cam from god knows where, as well as some different type of timing. so if you shut the throttle/revs down, too fast. exhasut valves open up and bang, bang bang. Good for about 2-3 foot flames.
Ahhhh the memories :headbang:

[sAsLEX]

I remember I followed a Skyline Godzilla over the Takas a while back and every time he got on the gas flames came out the exhaust.



hmm most riced/hotted up cars of that type ie evo/wrx/boy racer should shoot the old flames out the back. The V8 supercars do it. Think its something to do with cutting the spark off throttle and unburt fuel igniting on hot exhaust :blink:

[Motu]

Dunno about the V8 Supercars but most cars cut fuel on the over run,they don't cut spark.

[SPORK]

As a friend of Alarumba, I can tell you that he isn't serious about this, he just likes to imagine stuff :P Not that I can talk at all, though...

[Coyote]

I was thinking, get a metal elbow pipe, put it on the end of the muffler, so the exhaust is directed out to the side, then you can put the sparkpluf on the elbow pipe so you dont drill a hole through the pipe and end up ruining it. This means the flames will go out to the side, so you dont burn your ass, of more importantly, burn the bike

I'll let you know if this works or not :eek:
Hopefully get a roo racing pipe too

[カワサキキド]

Make sure you video it for us, so we can watch from the saftey of our pc's.

[Coyote]

Make sure you video it for us, so we can watch from the saftey of our pc's.
Haha, I'll make sure I do

[scumdog]

Don't laugh, Chrissy-Bimbo (Mrs S.D. to you riff-raff) wants a flamethrower kit in her '62 Fairlane, so much so that she wants it more then the engine rebuild I say is more needed!! :eek:

[degrom]

Haha, I'll make sure I do

Hey, Did you do the flame thrower thing?

Here is a blue print if you still want to do it.

Cheers.

[Coyote]

Hey, Did you do the flame thrower thing?

Here is a blue print if you still want to do it.

Cheers.
Unfortunatly no. It's another one of my ideas that had to be scrapped/delayed due to lack of money/skill/time

Good blueprint, it's a shame I don't really understand electronics yet

[degrom]

Unfortunatly no. It's another one of my ideas that had to be scrapped/delayed due to lack of money/skill/time

Good blueprint, it's a shame I don't really understand electronics yet

LOL... That blue print is really the easyest you will get. It has a fuse for overload protection. Relay to switsh the coil on. (Coil to make the spark)

The capacitor is there to create a spark every few milli seconds like on a normal ignition system.

If you shop arround you can get this running for around $30-$40...

[Coyote]

LOL... That blue print is really the easyest you will get. It has a fuse for overload protection. Relay to switsh the coil on. (Coil to make the spark)

The capacitor is there to create a spark every few milli seconds like on a normal ignition system.

If you shop arround you can get this running for around $30-$40...
What's the difference between the Toggle Switch and the Relay then?

And the 3 lines on the ends of some wires is the ground right? Which is actually the bikes Frame?

[degrom]

Toggle switch is a normal on of switch.

I think of a relay as a electrical switch. if you give it volts it will turn the switch to on.

A few reason for using it:

Safety, If it does not get power the switch/relay turns of.

Relays can usually handle higher power sources.(Like the high amps needed to run a coil)



The 3 lines are ground or negative. You can ground it on your frame. Just make sure your bike is negatively grounded. (frame = -)

[degrom]

Your starter is an example of a circuit that uses a relay to switch on the high powered starter motor.

[MattRSK]

Just get this guy to be your pillion.

<img src="http://www4.ncsu.edu/~zsbodenh/flamethrower%20(2).bmp">

[degrom]

Is this stuff even legal?

[Steam]

Is this stuff even legal?

Not on a public road it ain't. Also a fail at Wof time.

[degrom]

Not on a public road it ain't. Also a fail at Wof time.

I don't think I will use it with my eyes on the road,your ass might just not make it.

I am sure you can make it portable so they won't notice it when it goes for a WOF.

I am just wondering what facial expression you will get from the person inspecting you flame spitting bike at VTNZ.... LOL

[davereid]

cunning blueprint degrom... very cunning indeed.

[Coyote]

Toggle switch is a normal on of switch.

I think of a relay as a electrical switch. if you give it volts it will turn the switch to on.

A few reason for using it:

Safety, If it does not get power the switch/relay turns of.

Relays can usually handle higher power sources.(Like the high amps needed to run a coil)



The 3 lines are ground or negative. You can ground it on your frame. Just make sure your bike is negatively grounded. (frame = -)
I'll have a look in dick smiths for these components. Just what's a ballast resistor, what size capcitor should I get and where can I get an ignition coil?

[Sketchy_Racer]

hahaha Dont you dare spend money on this and then complain you dont have enough to go riding :laugh:

[Coyote]

hahaha Dont you dare spend money on this and then complain you dont have enough to go riding :laugh:
Haha, I'm getting extra money from all the extra hours at work. I'd be good to spend some of it on something stupid :p

A Spark Plug sticking out of the exhaust is the least of my worries for it's next warrant. According to the mechanic the swingarm bushings are almost dead and they'd need replacing for the next warrant. Is that expensive?

[degrom]

I'll have a look in dick smiths for these components. Just what's a ballast resistor, what size capacitor should I get and where can I get an ignition coil?

The ballast-er resister is a resister to bring down the voltage to the Coil. The coil don't need 12volts to work. A ballast-er resister is usually to preserve your points and saving them from burn out.

The capacitor is almost like a battery. Instead of producing power,it actually only stores the power. In this circuit the capacitor is charged up and once the capacitor's voltage reaches the amount of volts needed to activate the relay. It turns on the relay(Relay send power to coil,coil sends power to spark-plug,spark) for a millisecond till it is 'flat'. Then it needs to charge again before it can create a new spark.

The size of the Capacitor will determine how long it will keep the relay open.
The volts rating on the cap needs to be more than 14volts or it will release it's smoke and not work any more. They are cheap buy a few different once. I just think you should go for one that does not keep the spark on for to long as it may overheat the spark plug if it stays on for ever.

Supercheat will stock both ball-ester resister and ignition coils. Get the cheapest once as they don't have to be the best.

[degrom]

You can always use an old bike coil. They are nice and small and don't have to be new.

[degrom]

Do you want to stir some real shit?

[degrom]

This is a blue print for a level 2 flame thrower...

It has it's own fuel supply!!!

But you did not get it from me and I don't take any responsibility for the use of this info!!!

[Coyote]

This is a blue print for a level 2 flame thrower...

It has it's own fuel supply!!!

But you did not get it from me and I don't take any responsibility for the use of this info!!!
What's that accessory prong and does it connect to the ground, and is there a spark plug to ignite the fuel? Sure you need 2 fuel solenoids? Is it to stop flash backs?

Both my RG's have shitty mufflers that I was probably going to replace for when I sell them, so cutting them up and having a braided line going to it and a spark plug sticking out of it shouldn't be a problem. Plus I'll have the other one to whip back on before WOF inspection

[Coyote]

An external fuel tank in the from of a NOS bottle would look cool :D

Talking about Nitrous, another project I've wanted to do for a while: http://www.diy-nitrous.fsnet.co.uk/

[ManDownUnder]

You do realise you'll be banished to tail end charlie on any group rides you go on...

Re the flame thrower - go for it if you have to. I agree with those that think it's a daft idea but then you gotta do what you gotta do. If it's not hurting others - what the hell?

A JATO unit on the other hand...

[Coyote]

You do realise you'll be banished to tail end charlie on any group rides you go on...

Re the flame thrower - go for it if you have to. I agree with those that think it's a daft idea but then you gotta do what you gotta do. If it's not hurting others - what the hell?

A JATO unit on the other hand...
I don't have to, just I really want to :p

And it's not like I'd be using it on rides. It'll be strictly for offroad and in front of my school

Do you have connections to anyone that can get hold of one?

[degrom]

What's that accessory prong and does it connect to the ground, and is there a spark plug to ignite the fuel? Sure you need 2 fuel solenoids? Is it to stop flash backs?

Both my RG's have shitty mufflers that I was probably going to replace for when I sell them, so cutting them up and having a braided line going to it and a spark plug sticking out of it shouldn't be a problem. Plus I'll have the other one to whip back on before WOF inspection

I am not sure about the accessory prong thingy.(Changes from ride to ride,will be close to your fuse box) It is only a extra + lead from the battery that goes through the fuse box and is switched on when the ignition is turned on.

I will be honest with you. (I am not going to help you with the second plan.). The first one will be more than sufficient and it's controlable. The second one could cause major explosions if your system is not working properly. Imagine an engine with no cylinder walls and no ignition kill switch!!!

[ManDownUnder]

Do you have connections to anyone that can get hold of one?

Fraid not, but there are a few on here that will be able to assist I'm sure - especially now that you have that circuit diagram in front of you...

[Coyote]

I am not sure about the accessory prong thingy.(Changes from ride to ride,will be close to your fuse box) It is only a extra + lead from the battery that goes through the fuse box and is switched on when the ignition is turned on.

I will be honest with you. (I am not going to help you with the second plan.). The first one will be more than sufficient and it's controlable. The second one could cause major explosions if your system is not working properly. Imagine an engine with no cylinder walls and no ignition kill switch!!!
Yeah, I think the second is tempting fate. The first one is easier for me to follow as well

[Sketchy_Racer]

I wouldnt use the RG

You will root the motor. It dont got valves to stop the blowback from the flames.

But i could be wrong.

[Coyote]

I wouldnt use the RG

You will root the motor. It dont got valves to stop the blowback from the flames.

But i could be wrong.
Mmmm, you got me scared now. The powervalves are fragile enough

[Toaster]

Well, of course its a stupid idea, thats why I thought of it

Classic dude!:scooter: I'm sure the fire brigade and 'wrap-the-world-in-cotton-wool' safety-police would love it!!

[degrom]

Frealing hell!!!

Just came back from SuperCheap and Repco. (From to day on I will refer to Repco as Rip-off Co. All their stuff are at least $5 more for each item!!!)

Coil - $43
Spark Plug - $5
Spark Plug lead - $8
Relay - $7
Ballast Resister - $8

Luckily I was not born here,so I have the right to be a cheap ass!!!

Coil... I would go for a second hand one. Go for a bike one because they are nice and small.
Ballast Resister... Get a normal resister from Dick Smith or JayCar that is about 3 ohme or so and make sure it's a big 10W one.
Spark Plug... Use an old one.
Relay - Dick Smith or JayCar

[Coyote]

Frealing hell!!!

Just came back from SuperCheap and Repco. (From to day on I will refer to Repco as Rip-off Co. All their stuff are at least $5 more for each item!!!)

Coil - $43
Spark Plug - $5
Spark Plug lead - $8
Relay - $7
Ballast Resister - $8

Luckily I was not born here,so I have the right to be a cheap ass!!!

Coil... I would go for a second hand one. Go for a bike one because they are nice and small.
Ballast Resister... Get a normal resister from Dick Smith or JayCar that is about 3 ohme or so and make sure it's a big 10W one.
Spark Plug... Use an old one.
Relay - Dick Smith or JayCar
Just wondering will flashbacks be a problem? Suppose it can handle backfires so there should be no reason for a flashback to cause trouble

I've got plenty of spark plugs at home in decent order. My brother's 125 is very picky with it's spark plugs and requires them to be in new condition. Plus it has expensive taste and requires top of the line plugs. My brother turned one into a keyring

I was probably going to Dick Smiths for everything. Unfortunatly my Dad is selling the only spare coil we have with the TF to sweeten the deal

[WasPhantom]

I put one on my mini once, and I guess the idea would be the same, just run a injector of sorts, wire it up so that it will come full on when you hit the go button, and have a spark plug to ignite it, fairly simple concept really ;-) "Add fuel, and spark, will have flame"

[degrom]

I am not sure about 2 stokes... (I think if it's behind the muffler it will be fine) I am thinking of trying it out on my GN... I have an old pair of rusted pipes that I can do my in plants on...

I am just wondering about the spark plug... Does it have a normal thread,in other words will I find a nut that will fit onto a spark plug? Then I can weld the nut onto the exhaust...

[degrom]

I put one on my mini once, and I guess the idea would be the same, just run a injector of sorts, wire it up so that it will come full on when you hit the go button, and have a spark plug to ignite it, fairly simple concept really ;-) "Add fuel, and spark, will have flame"

Do you still have it?

[WasPhantom]

Do you still have it?

Alas no, got rid of it a while back...

As for welding a nut on, yes, you can get a nut that has the correct thread. So drill hole, weld on nut, enjoy :-D And you're right about the two strokes, my guess is that doing anything with the expansion chamber would be A Bad Thing (tm)

[gammaguy]

at last-i know the true meaning of "hotting up":laugh:

[degrom]

Okay... I found a place that sells brand new Hitachi Japanese made coils for $20 and ballast resisters for $5...

This flamethrower stuff is actually side-tracking me away from fixing the ZX-10 fairings. I want to get all the plastic welding done before the weekend and get her primed before the bike show in February. (Anyone need some plastic welding done,now is the time to speak up?!?)

[WasPhantom]

This flamethrower stuff is actually side-tracking me away from fixing the ZX-10 fairings. I want to get all the plastic welding done before the weekend

hmmmmm - two birds, one stone?! :Punk:

[LilSel]

I used to play around with the mixture in my mini and when running rich when changing gears would have flames shoot quite far out the 2" exhaust system... :D... still got the mini...(in restoration still tho)... scored a set of twin SU carbs to go on when I put her back together... was easy as to make flames come out of it tho... rich rich rich... and bang flame bang :rockon:

[WasPhantom]

hehe - that is of course the other way ;-) We done that with a mates fuel injected turbo prelude - that said, it needed all the fuel we could feed it ;-)

[WasPhantom]

And yes - work is very busy today ;-)

[degrom]

LOL... I did not mention it,but my first car was a MINI.... LOL

That's where I saw the Coil from. The one I bought looks the same as 'n mini's.

[Coyote]

Okay... I found a place that sells brand new Hitachi Japanese made coils for $20 and ballast resisters for $5...

Where? I've got the cash now, and enough to get me some new aftermarket indicators (original's cost $250 each, an aftermarket pair cost $50+)

[Sketchy_Racer]

Hey Daniel,

Have you thought about the fact that you gonna have to drill and weld your your chamber if your going to do it on the RG??

I cant wait to see if this shit blows up or not :laugh:

[WasPhantom]

Hey Daniel,

Have you thought about the fact that you gonna have to drill and weld your your chamber if your going to do it on the RG??

I cant wait to see if this shit blows up or not :laugh:

That's the best part!! :Punk: :Punk: :Punk:

[Coyote]

Hey Daniel,

Have you thought about the fact that you gonna have to drill and weld your your chamber if your going to do it on the RG??

I cant wait to see if this shit blows up or not :laugh:
Well you'll have to wait at least another week. I got some new micro indicators (which I found out once I got home they were only for the rear, try to get away with them anyway) and I've ordered a new battery. Only got enough money for a tank of gas or oil

[degrom]

Alas no, got rid of it a while back...

As for welding a nut on, yes, you can get a nut that has the correct thread. So drill hole, weld on nut, enjoy :-D And you're right about the two strokes, my guess is that doing anything with the expansion chamber would be A Bad Thing (tm)


Hi. You said you can get nuts that will fit onto a spark-plug. Do you know where I can get some of those?

The spark plug will need a metric 14 with 1.25 thread. (I could only get a 1.50 thread)

[Sketchy_Racer]

If you can buy a Nut the right pitch, you might have to go buy a M14 X 1.25 tap, and make your own.

[degrom]

If you can buy a Nut the right pitch, you might have to go buy a M14 X 1.25 tap, and make your own.

Mmmm... Okay I can get the Nut that's pitching,but...

Where do I get a cheap tap? I asked about a tab and the guy at the nut shop said it was going to be around $90.

If I was restoring a motor I might have bought one. But as we are on a students budget I am sure Coyote wont want to buy a $90 tap for a $50 project.

Thanks for the input though.

[degrom]

Hey Daniel,

Have you thought about the fact that you gonna have to drill and weld your your chamber if your going to do it on the RG??

I cant wait to see if this shit blows up or not :laugh:

The welding and drill I can help with...

[WasPhantom]

I would have normally just popped down to my local friendly workshop that I knew etc in Nelson, alas I've since moved, so can't help there.

However, the other option is to buy a helicoil set, and do it that way - also it's always handy to have a helicoil set, "just in case" ;-)

[degrom]

I would have normally just popped down to my local friendly workshop that I knew etc in Nelson, alas I've since moved, so can't help there.

However, the other option is to buy a helicoil set, and do it that way - also it's always handy to have a helicoil set, "just in case" ;-)

Yes that is another way to go...

LOL... any idea what a helicoil will cost? Or do you have to buy a complete set?

Other option is to grind off all the threads on the spark plug using a lathe and re-threading it.

[WasPhantom]

I'm trying to think, I believe it was around $30 for the last set I brought - I can't be 100% sure on that though, as I haven't brought one in a few years ;-)

[degrom]

I'm trying to think, I believe it was around $30 for the last set I brought - I can't be 100% sure on that though, as I haven't brought one in a few years ;-)

Do you think this will work?


Spark Plug Hole Rethreader 14mm and 18mm

For repairing damaged or dirty threads in spark plug holes
14mm and 18mm threads
Rubber “O” ring holds tool firmly in place in 13/16” socket when in use.

<img src="http://www.powerbuilttools.co.nz/Images/648422w.jpg"></img>

Or will it only work in aluminum?

[Motu]

Go to a tool shed or whatever used tool shop is in you area - they will have used taps of every size.The rethreader won't cut a new thread.

[davereid]

20 years ago I had an old 6cyl Nissan Patrol. It could do a backfire complete with flame on command.. the technique was turn the key off, coast along pumping the gas, then release the throttle and turn the key back on at the same time. Pumping the gas with an old carb ment plenty of gas.. taking the foot off the gas at switch on ment negative manifold vacuum.. and with a lazy old 6cyl there was always a valve open.

Went down the hill from Pukerura Bay one day, Saw a cop giving a ticket, crouched by the drivers door. Pumped the gas etc, got the explosion EXACTLY as I passed him. I think he though he was being shot at ! jumped for cover behind the car.

Sorry if it was you getting the ticket... bet it went up heaps !

(And I bet the cop changed undies.. he was SCARED !)

[degrom]

Talking about backfires...

What is the worst thing that could happen to you motor from it backfiring?

[NighthawkNZ]

What is the worst thing that could happen to you motor from it backfiring?

you get singed arse hairs... ;)

[degrom]

you get singed arse hairs... ;)

LOL... Hair grows back... (Motor's not... :sick: )

[Coyote]

I like how this thread has become technical

I saw in one of my previous posts from when this thread began that I had the idea of getting a bit of metal elbow pipe so I could direct the flame further away from my arse, and an added benefit would be the spark plug could be mounted onto that so there's no need to cut up the muffler (will still have to figure out a mount for the pipe but there's 2 screws holding the muffler packing in so they could be used, should be easy). Not that this really matters as the pipe is bung. I'm likely to make my own at metalwork

I just got the RG off Jamezo. It's sitting in my garage now :D

[degrom]

I like how this thread has become technical

I saw in one of my previous posts from when this thread began that I had the idea of getting a bit of metal elbow pipe so I could direct the flame further away from my arse, and an added benefit would be the spark plug could be mounted onto that so there's no need to cut up the muffler (will still have to figure out a mount for the pipe but there's 2 screws holding the muffler packing in so they could be used, should be easy). Not that this really matters as the pipe is bung. I'm likely to make my own at metalwork

I just got the RG off Jamezo. It's sitting in my garage now :D

Can your metal shop bend tube or are you going to weld the bend yourself?

[Coyote]

Can your metal shop bend tube or are you going to weld the bend yourself?
We have a manual pipe bender that highlights just how ridiculously weak I am

Then I can weld a plate onto it with 2 holes so it can be screwed onto the end of the muffler without damaging the muffler. And it can be taken off for the warrant

And the spark plug will be mounted opposite to where the pipe points out. I'll have to draw a diagram when i can be arsed

[degrom]

We have a manual pipe bender that highlights just how ridiculously weak I am

Then I can weld a plate onto it with 2 holes so it can be screwed onto the end of the muffler without damaging the muffler. And it can be taken off for the warrant

And the spark plug will be mounted opposite to where the pipe points out. I'll have to draw a diagram when i can be arsed

Sounds good...

I have sorted most of the parts. Just waiting to payday to go shopping. :scooter:

What are you going to do to fit the spark-plug?

[Coyote]

Sounds good...

I have sorted most of the parts. Just waiting to payday to go shopping. :scooter:

What are you going to do to fit the spark-plug?
Here's my painstakingly photoshopped plan view

Might not be such a good idea as the spark plug lead will be in the wheels way. Simply having the spark plug on top would be fine

[degrom]

Here's my painstakingly photoshopped plan view

Might not be such a good idea as the spark plug lead will be in the wheels way. Simply having the spark plug on top would be fine

Just get a spark-plug lead with a 90 Degree bend at the spark-plugs end..

[Coyote]

Just get a spark-plug lead with a 90 Degree bend at the spark-plugs end..
Fair enough. Just a matter of waiting till next wednesday (payday)

[degrom]

Is it Wednesday already? LOL

[davereid]

On a 4 stroke you will generally blow your exhaust to bits in short order. On a two stroke, there is a period of time when both inlet and exhaust ports are open together. If the backfire occured then I think you may lay waste to reed valves, carb slides, and even have airbox fires ! Not that I have ever seen it.... keep your camera handy Id love a copy of the video

[degrom]

On a 4 stroke you will generally blow your exhaust to bits in short order. On a two stroke, there is a period of time when both inlet and exhaust ports are open together. If the backfire occured then I think you may lay waste to reed valves, carb slides, and even have airbox fires ! Not that I have ever seen it.... keep your camera handy Id love a copy of the video

Can't a Four stroke have Airbox fires?

We will post the video as soon as it's done...

[Sketchy_Racer]

Also, if you get a bang big enough, it would be strong enough to blow out the skirt of the piston.

[davereid]

Can't a Four stroke have Airbox fires?

We will post the video as soon as it's done...

Yes, it used to very common on cortinas and zodiacs with weber downdraught carbs.

I'm not sure a backfire in the exhaust could cause it though, as inlet valve and exhaust valve are not open at the same time so I don't think your plan would cause it.

[Coyote]

I think I've mistaken backfires as something else. Isn't a backfire when exhaust gases light on fire creating that big bang? Or is that a backfire and can they really cause that much damage?

[Sketchy_Racer]

Any large explosion in you exhaust system is a back fire. Then you have Carb back fires. (which is usually ignition related)

On a 2 stroke, i dont think there would be any unburnt gasses running through the exhaust. If you wanted to cause flames, you would need to add feul straight into the chamber.

Meh.... flames.. overrated. Wheelies+knee down. Far cooler

[degrom]

Any large explosion in you exhaust system is a back fire. Then you have Carb back fires. (which is usually ignition related)

On a 2 stroke, i dont think there would be any unburnt gasses running through the exhaust. If you wanted to cause flames, you would need to add feul straight into the chamber.

Meh.... flames.. overrated. Wheelies+knee down. Far cooler

I was wondering about 2-strokes... But I still think they will make flames,even if it's only 2-stroke flames... LOL

[degrom]

The one we are building would look like this..
q1WicaSWvf4

The Stage 2 one will look like this...
QEvUyvMzBWE

[Coyote]

I want a stage 2 system now...

[degrom]

I want a stage 2 system now...

No... I don't really like it. Looks fake. The first one makes it look like it's a really hot motor... LOL

[degrom]

I have been busy... You can't just have flames right? (http://www.kiwibiker.co.nz/forums/showthread.php?t=42137)

[Coyote]

Again this project has been put aside. There's something far more tempting that has caught my eye. Hopefully I'll let you know soon what it is

[degrom]

Again this project has been put aside. There's something far more tempting that has caught my eye. Hopefully I'll let you know soon what it is


Keep me up to date!!!

[degrom]

All I need to still do is install it onto the exhaust... And re jet the GN... LOL

bq41z00C8pQ

[beyond]

:)

Reminds me of the guy who had a Y2K jet powered motorbike (US$100,000)
Had a little LED sign on the back that said Do not get too close but problem was at the lights people would drive up closer to get a look at the sign and when he pulled away their bumpers were all melted :)

[degrom]

:)

Reminds me of the guy who had a Y2K jet powered motorbike (US$100,000)
Had a little LED sign on the back that said Do not get too close but problem was at the lights people would drive up closer to get a look at the sign and when he pulled away their bumpers were all melted :)

Yes... I think it was that TV presenter that collects all the bikes and cars...
(Jay Leno)

I don't think a stage 1 flame thrower will do it. But I can always upgrade if I needed the extra fire power... LOL

[KLOWN]

couldn't be bothered reading entire thread so if this has already been posted, my bad. I have been told if you secure a some fuse wire going across your exhaust (on the inside) the temp of the exhaust gasses will heat the wire till its red hot then will ignite any unburnt fuel and you'll blow flames.

[degrom]

couldn't be bothered reading entire thread so if this has already been posted, my bad. I have been told if you secure a some fuse wire going across your exhaust (on the inside) the temp of the exhaust gasses will heat the wire till its red hot then will ignite any unburnt fuel and you'll blow flames.

It might work,but you won't have control over it... The spark also need to bee at the end of the exhaust where it might not be hot enough to make the thin wires red hot... But anything is possible... LOL

[Coyote]

couldn't be bothered reading entire thread so if this has already been posted, my bad. I have been told if you secure a some fuse wire going across your exhaust (on the inside) the temp of the exhaust gasses will heat the wire till its red hot then will ignite any unburnt fuel and you'll blow flames.
Interesting. That sounds like it's within my budget

[Toaster]

I'd love to see burners out the back of the 109.

[degrom]

I'd love to see burners out the back of the 109.

Yes!!! That would be nice.... LOL