More Power

[daniel]

Hey just wanted to know if anyone out there has Superchargered or turbo chargered there V Twin bike, and if so who and where, and how well did it work

[Toast]

Hey just wanted to know if anyone out there has Superchargered or turbo chargered there V Twin bike, and if so who and where, and how well did it work

Apparently supercharging works a treat on bikes (far better than turboing them), and there's a fair bit of it being done in the UK. The last few Pommie bike mags I bought had ads in the back for supercharging bikes (offering 200+rwhp for R1). Try a google.

[SimJen]

In Aussie bike mag Rapid, I recall reading Jamie Bezzina (Turbocharging legend) had turboed an SP1. Pick a copy up as he does a question/answer section which might prove useful, he also supplies kits too, i think...

[vifferman]

Like this, you mean?

[Paul in NZ]

I'm a stupis old prick who has never actually done this to my own bike but...

Yes and no....

There was a craze for turbocharged bikes and cars a few years back and Honda did a CX V twin (was it the 650?) that went pretty well but in general a turbo will work better on a multi because it is driven by the exhaust and you get a more constant flow with a 4.

Supercharging is also difficult on a V Twin because of the distance between the inlet tracts which means longer, individual feeds and complicated plumbing.

To get over the lag problem with turbos, many modern vehicles use twin turbos but.. not enough room on a bike and the same goes for all the other complicated shite required to make the power useable.

The short answer is, yes it will work but you will be pioneering the application on your particular bike and at such a high $$ cost where you could more easily just go buy an already fast bike....

It does not take much to get 200bhp from a GSXR1000

[vifferman]

There was a craze for turbocharged bikes and cars a few years back and Honda did a CX V twin (was it the 650?)
Yeah, it was the 650, and I think there was also a turboed version of the CX500.

[Paul in NZ]

Yeah, it was the 650, and I think there was also a turboed version of the CX500.

I think 2 Wheels described it as having the power of 750 with the weight of a 500 and the price tag of a 1000....

[WRT]

Ok, so you can go out and buy off the shelf a brand new GSXR thou poking out like a ka-squilion horses, and be like every other bugger out there. Or you can take an older bike thats a little different from your standard sports bike and strap a turbo on it and have something unique and unusual. And cool . . .

And you have gotta admit, a big twin with a turbo on it would be cool. And a great project too. Go for it buddy, and keep us posted on how you get on.

[marty]

these guys would know if it's been done/can be done http://www.rccturbos.com/components.html

[sAsLEX]

Milky is working on the FSAE team at auckland uni and they are supercharging a r6 enigne for it

[Slingshot]

Milky is working on the FSAE team at auckland uni and they are supercharging a r6 enigne for it

That would be cool.


I wonder if the lag from a supercharger would suit a motorbike better, rather than having instant boost.

Has anyone considered NOS? Imagine being in sixth gear and hitting the NOS button :rockon:

[Coyote]

Has anyone considered NOS?
Yes, many a time

http://www.diy-nitrous.fsnet.co.uk/index.htm

Was thinking of trying this out on a minimoto, then maybe on a bigger bike once I know what I'm doing. Also want to try turbocharging it if I can find a small enough turbo. Might buy this book : http://www.sportscarmarket.com/Cart/products/books/motorcycle-turbocharging-supercharging-and-nitrous-oxide.html

By the way, it's Nitrous. NOS is a company

[Slingshot]

By the way, it's Nitrous. NOS is a company

Actually, it's Nitrous Oxide. It's just easier to talk about NOS as most people know what you mean.

[N4CR]

Also want to try turbocharging it if I can find a small enough turbo.

There was a turbo going on trademe for a hundred bucks for a 600cc micro car (one of those weird ones you only ever see in gran turismo with names like 'cappuchino' or 'panda' etc). That would have been fairly easy to stick on and then you would just need to fiddle with some engine settings and away you go, as long as ya keep the boost low enough.

Mr Turbo on his website has had some older bikes with turbo's on them that I'm sure could scare the gixxerk5/10r/1000rr crews :blink:

[WRT]

. . . in a straight line. Bet they scare their own riders even more in the twisties . . .

[Coyote]

Making your own turbo would be too complex wouldn't it? You have to balance the turbine correctly or else it'll disintegrate right?

[chickenfunkstar]

There's an Aprilia Tuono with NOS which turns up at Meremere quite a bit. That thing has got some stick.

[iwilde]

Who's seen the ghost rider clip with the 499hp turbo'd 'busa doing a wheelie at 300+?

[Mattyc]

Making your own turbo would be too complex wouldn't it? You have to balance the turbine correctly or else it'll disintegrate right?


Not to mention 1000's of dollars, be a bit of a waste of time seeing there are some small turbos out there
. some older forklifts have tiny little turbos - 2 cyl diesel, also som small diggers have really small turbos , the suzuki cappuchino is a 600cc turbo as someone said, the turbo on them is pretty small might be ok.

to fight the lag problem a roller bearing core could be fitted, also anti lag if you really want to get carried away, personally i wouldnt supercharge a bike (mainly cause of the complexity of the drive and the exposed belts on the ones i have seen, but would love to turbo one.

there are some really good sized turbos out there that would be perfect size on a thou, just have to hunt around for them, engine importers seem to stockpile them on a pallet and send them off to places to reco then sell as recoed units

Ghostriders turbo busa is an example of complete madness 1300cc - turbo 499hp at the wheel

[vifferman]

Some twins just don't have the engine strength to handle too much extra power. F'rinstance, the VTR cases can't handle more'n about 125hp before they crack up.

[Coyote]

Not to mention 1000's of dollars, be a bit of a waste of time seeing there are some small turbos out there
. some older forklifts have tiny little turbos - 2 cyl diesel, also som small diggers have really small turbos , the suzuki cappuchino is a 600cc turbo as someone said, the turbo on them is pretty small might be ok.

Reckon one would be small enough for a minimoto or at least a little commuter bike? I want to get something small and cheap to modify so if I ruin it/blow it up it isn't so much of a problem as if I tried modifying the CBR

[Mattyc]

Some twins just don't have the engine strength to handle too much extra power. F'rinstance, the VTR cases can't handle more'n about 125hp before they crack up.

i wouldnt turbo a bike, without first fitting forged pistons(if the engine doesnt have them already) and fitting a head spacer plate to lower the compression for starters, and i would only personally turbo an injected bike, then get the ecu re-mapped.
.blow thru carb setups can only run low boost, due to the carbs not being designed to have 7-10 psi rammed thru them, drawthru carb setups you cant run an intercooler..

[Mattyc]

Reckon one would be small enough for a minimoto or at least a little commuter bike? I want to get something small and cheap to modify so if I ruin it/blow it up it isn't so much of a problem as if I tried modifying the CBR

I have never seen one small enough to fit onto a minimoto, I had a thought that a small electric blower may be the go for a minimoto.

An electric ducted fan off an Rc plane may do the trick, run it off a microswitch at a certain throttle position, for a power source use lithium polymer batteries... , may need some sort of rising rate fuel regulator also, my mate has three daytona minmotos (hes gonna start to race soon) i might just have a word to him about doing something to that description

[Coyote]

I have never seen one small enough to fit onto a minimoto, I had a thought that a small electric blower may be the go for a minimoto.

An electric ducted fan off an Rc plane may do the trick, run it off a microswitch at a certain throttle position, for a power source use lithium polymer batteries... , may need some sort of rising rate fuel regulator also, my mate has three daytona minmotos (hes gonna start to race soon) i might just have a word to him about doing something to that description
That's a good idea, might have to try that

[Mattyc]

Call either Ace Hobby on the shore, or Airsail in penrose for the electric ducted fan and batteries etc

I reckon that would be your best bet

[cowpoos]

That would be cool.


I wonder if the lag from a supercharger would suit a motorbike better, rather than having instant boost.

Has anyone considered NOS? Imagine being in sixth gear and hitting the NOS button :rockon:

errr....there is next to no lag with a supercharger....

[Mattyc]

errr....there is next to no lag with a supercharger....


Very true Mr Poos's, the only downfall's of a SC are they do run out of puff at higher rpm, and they do use up a few HP to drive the actual SC the ass ripping low rpm boost would see the front wheel skyward a lot of the time.

another thing to consider, to change the boost of a supercharger you have to change the pulley ratio. on a turbo its as easy as adjusting either the wastegate acuator spring tension or using a bleed valve, or a closed loop electronic boost controller

[Slingshot]

errr....there is next to no lag with a supercharger....

Yes, you're right.

I got myself all confused!!!

[WRT]

Good testiment for the strength of a turbo'ed suzy . . .

[What?]

Supercharging a single or twin (maybe even a triple) has a major problem in that there is too much time where all the inlet valves are closed. This is not a problem with a turbine, but a roots blower will try to (and maybe succeed) to stall every time the air has nowhere to go. The result will, at the least, be broken drive belts. Gaskets will also suffer, and a high pressure system with weak (i.e. standard) valve springs could get real ugly.

[DEATH_INC.]

Somewhere round here I got an old CM400 twin that I hung a turbo on a while back.....works ok.One of the TL boys on Gixxer.com was turboing his TLr but I never caught the end of it so I don't really know how it turned out.
Turbo's are great,but they too have limitations (like superchargers),you can reduce spool up to almost nothing,but the turbo will be quite small and will run outta puff up top.Don't get spool up time and lag confused with each other,as they are quite different.There's plenty of turbo's out there to run on a bike,a t2 will work on anything down to a 500 4.The CM has one of the turbo's off a twin turbo legacy on it.
There's a lot of myths about turbo's and superchargers,they really aren't that tricky.

[DEATH_INC.]

I have never seen one small enough to fit onto a minimoto, I had a thought that a small electric blower may be the go for a minimoto.

An electric ducted fan off an Rc plane may do the trick, run it off a microswitch at a certain throttle position, for a power source use lithium polymer batteries... , may need some sort of rising rate fuel regulator also, my mate has three daytona minmotos (hes gonna start to race soon) i might just have a word to him about doing something to that description
Ummmm.......no.You won't get any boost from it.Those electric superchargers don't work either.It's a load of shite.Think about how much power it would take to compress the air quick enough to pump more pressurised air than your engine needs.

[kro]

Bah, I turbo'd an old 4 stroke scooter with a short length of flexible hose, and a 12 volt hair dryer once, just cut the heating colis in the hair dryer, and force fed the airbox/filter.

Dad was not impressed, but I enjoyed it.

[Mattyc]

Ummmm.......no.You won't get any boost from it.Those electric superchargers don't work either.It's a load of shite.Think about how much power it would take to compress the air quick enough to pump more pressurised air than your engine needs.

We talking for a Mini Moto, I thought it would of worked.. the Ducted fan im thinking of with a brushless motor (50,000 rpm), manages to generate enough thrust to fly a 5lb RC plane , the fan is about 90mm, the brushless can reach its top rpm in 10 rotations.

an example of how kick ass brushless motors are - its a boat i know, but its brushless powered boat doing 200kmh - its the world record holder at present

http://offshoreelectrics.com/Videos/Joerg_LA_SAW_2003.wmv

[NordieBoy]

Reckon one would be small enough for a minimoto or at least a little commuter bike? I want to get something small and cheap to modify so if I ruin it/blow it up it isn't so much of a problem as if I tried modifying the CBR
Don't the 110cc pit bikes (ThumpStar) have a battery driven supercharger option?

[Mattyc]

Just had another thought.............. smoke came out of my ideas after this

could use a Model Rotary O.S Engine (normally runs on glow fuel), rotary as a supercharger

[Monsterbishi]

Personally, I'd use one of the turbo's off a Mitsubishi Legnum VR4, a MHI TD03, assuming you de-compressed the engine to about 9:1 at about 14psi on a litre bike you'd be seeing about 200whp with a nice quick spool up.