4t tuning thread

[NOID]

[QUOTE=richban; Pod filter not enough volume, Trumpets no good to much length, open carb good. For my engine engine and carb that is. Airbox untested properly. .[/QUOTE]

I have been running my loncin with nothing but carb since fish told me that they run better like this. this might be true but you need to have an airbox or something to stop the wind pissing round with your intake air. i had a strong head wind at taupo last week and im pritty sure it was "sucking" the air from around my carb so it wasnt getting the same velocity into the carb as i normally would . I was getting a a large cough/backfire when heading into the wind more than like due to running rich.

i would reconmend making a trumpet thats quiet short but has a large entry dia. and then creating a semi sealed airbox that doesnt alow your intake air to be disturbed much. .

my 2c

[richban]

I have been running my loncin with nothing but carb since fish told me that they run better like this. this might be true but you need to have an airbox or something to stop the wind pissing round with your intake air. i had a strong head wind at taupo last week and im pritty sure it was "sucking" the air from around my carb so it wasnt getting the same velocity into the carb as i normally would . I was getting a a large cough/backfire when heading into the wind more than like due to running rich.

i would reconmend making a trumpet thats quiet short but has a large entry dia. and then creating a semi sealed airbox that doesnt alow your intake air to be disturbed much. .

my 2c

I put the plastic container back on the carb on sunday and it made a massive difference smooth power and top end was way better. Until I get around to making a proper air box the 3 dollar 1 liter tupperware container is the business. I melted the bottom and pressed it onto the carb the other end is open its about 90mm in diameter. Must be just enough to stop the turbulence. Oh I don't have the vege strainer bit in anymore

[Bren_chch]

I can imagine bucket racers having tupperware parties now!

It actually looks quite hightech!

Much better then the 2 litre coke bottle i was going to use!

[Kickaha]

I can imagine bucket racers having tupperware parties now!

Saw a bigger version as a sidecar airbox on a GSXR1000 2 years ago, several Karts used to use them as boxes to hold the electrics, Tupperware rocks!

[richban]

I can imagine bucket racers having tupperware parties now!

It actually looks quite hightech!

Much better then the 2 litre coke bottle i was going to use!

This is how it started out. It was making a very cool noise / resonance sort of vibe. At easter I will put my camera mic right next to it and see what happens.

[F5 Dave]

I have been running my loncin with nothing but carb since fish told me that they run better like this. this might be true but you need to have an airbox or something to stop the wind pissing round with your intake air. i had a strong head wind at taupo last week and im pritty sure it was "sucking" the air from around my carb so it wasnt getting the same velocity into the carb as i normally would . I was getting a a large cough/backfire when heading into the wind more than like due to running rich.

i would reconmend making a trumpet thats quiet short but has a large entry dia. and then creating a semi sealed airbox that doesnt alow your intake air to be disturbed much. .

my 2c

Hard to say, I suspect the strong headwind was putting you under more load, but sometimes it can have an effect. Experimentation is king. I made an airbox which attached onto the carb & my 50 hated it. I also stuffed a munty fan blowing crossways over the open carb mouth. Didn't make diddle squat difference on the dyno. I now use a still air airbox that contains the carb, more as a means of keeping stones out, but try not to duct hot air into it.

[bucketracer]

Ok, just toying with the idea, a supercharged Honda 100 ( std bore is 99cc) for F4.

Now the rules don't say the supercharger has to be driven by the same motor that powers the bike.

So the supercharger could be spun using an electric motor and battery or a weed eater motor or even two squirrels in a cage.

Looking at TeZe's and Chambers FZR frames here at work it looks like there is plenty of room to mount a remote blower in the area the passenger would have sat.

Has any one else tried a remote blower on a bucket?

[SS90]

Ok, just toying with the idea, a supercharged Honda 100 ( std bore is 99cc) for F4.

Now the rules don't say the supercharger has to be driven by the same motor that powers the bike.

So the supercharger could be spun using an electric motor and battery or a weed eater motor or even two squirrels in a cage.

Looking at TeZe's and Chambers FZR frames here at work it looks like there is plenty of room to mount a remote blower in the area the passenger would have sat.

Has any one else tried a remote blower on a bucket?

What's going to happen when you go from full opened throttle to close throttle at the end of the straight, and your squirrels/ weed eater motor are still spinning flat out?

Your closed throttle won't slow your engine down with the blower maxed out, even if you have some type of clutch, the time delay between the clutch freewheeling, and the blower slowing down will be quite considerable, in terms of engine speed anyway.

[bucketracer]

What's going to happen when you go from full opened throttle to close throttle at the end of the straight, and your squirrels/ weed eater motor are still spinning flat out?

Your closed throttle won't slow your engine down with the blower maxed out,

Your not thinking and have run off at the mouth again..............

Now a turbo car engine does not have any problems slowing down quickly when the throttle is closed.

The plan is a carb or injected blow through system.

[Buckets4Me]

What's going to happen when you go from full opened throttle to close throttle at the end of the straight, and your squirrels/ weed eater motor are still spinning flat out?

Your closed throttle won't slow your engine down with the blower maxed out, even if you have some type of clutch, the time delay between the clutch freewheeling, and the blower slowing down will be quite considerable, in terms of engine speed anyway.

you are not a boy racer are you
thats what the big ass LOUD blow off valve is for

opens and lets all the air out with a bigh wooooshhh (anyoung all the old folks at the same time)

Big bling if he can get it to work (dosent have to be fast either. just go woosh and he will have a new following )

[Kickaha]

Your not thinking and have run off at the mouth again..............

It was you who wasn't thinking, you were talking about using a weedeater or electric motor to drive the supercharger the question he asked was

What's going to happen when you go from full opened throttle to close throttle at the end of the straight, and your squirrels/ weed eater motor are still spinning flat out?

So how will you regulate your electric/weedeater motor to work off the bike throttle as well so that doesn't happen?

[bucketracer]

you are not a boy racer are you
thats what the big ass LOUD blow off valve is for

There it is..........the answer and bling too...........

[bucketracer]

It was you who wasn't thinking, you were talking about using a weedeater or electric motor to drive the supercharger the question he asked was

So how will you regulate your electric/weedeater motor to work off the bike throttle as well so that doesn't happen?

Wrong........you have even quoted him incorrectly, that wasn't the question he asked, you need to go back and read what he actually said and then think about the answers for a bit.......

[bucketracer]

So how will you regulate your electric/weedeater motor to work off the bike throttle as well so that doesn't happen?

Its not necessary.......

The supercharger/blower whatever can run hard out all the time.

Check out how a supercharged "blow through system" works.

Or just take a good look under the bonnet of a turbo car and you will see what I mean..............

[SS90]

Its not necessary.......

The supercharger/blower whatever can run hard out all the time.

Check out how a "blow through system" works and you will see what I mean.

Or just take a good look under the bonnet of a turbo car.............

Don't go pissing your panties.

Kiakaha understood my question, what is ambiguous about it?

Are you sure that the weedeater/hampster powered blower can run "faltout" all the time?, and simply regulate boost via a blowoff valve?

You are forgetting that this is a carbed engine.

Unless you use one of Chambers spare FZR250 shock springs as a slide spring, that slide won't come down in time, blow off valve or not.