Tiny Turbos

Hawk Tuah

Hawk Tuah

Hawk Tuah

Soldato
Joined
18 Oct 2002
Posts
14,253
Location
Sandwich, Kent
does anyone know nhere you can get tiny tittle turbos from. I've seen some sites showing ickle little turbo's being installed on pocket bikes. been looking at new ways to get more power out of my G-Wheel.

Quite fancy a small scale project to keep me occupied.
 
Siliconslave said:
bah, don't turbo it - far too much effort, Nitros it :D that'll brake your ankles nice and quick!
Click to expand...

Good point, mini nitrous kits of cheap off the bay, not sure how well they work though.
 
moss said:
Good point, mini nitrous kits of cheap off the bay, not sure how well they work though.
Click to expand...

pretty sure jonny69 added one to his bike (or one of the other ocuk resident nutjobs) worked pretty well but almost killed them (well threw them instantly)
 
Siliconslave said:
pretty sure jonny69 added one to his bike (or one of the other ocuk resident nutjobs) worked pretty well but almost killed them (well threw them instantly)
Click to expand...

Yeah, I do remember jonnys thread awhile back, just cant remember what happend in the end.
 
Hmm. I've been thinking of Nitrous.

At the moment its aircooled. I'm a bit worried about overheating it, so I might add some water cooling to it.
 
Would water cooling work on it? being so low down and probably not getting much decent air flow unlike cars/bikes etc?
 
moss said:
Would water cooling work on it? being so low down and probably not getting much decent air flow unlike cars/bikes etc?
Click to expand...
Same air down there as up higher. :p

Its only a teeny tiny engine and at the moment its purely air cooled. Just thinking of ways to ensure it doesn't overheat. I'm running a bit more power than standard, and adding Nitrous might just push it over the edge! :eek:
 
A decent exhaust and porting job will have a far bigger effect that adding a turbo charger to a 2 stroke...

Turbo will add unwanted back pressure to the exhaust and mess with the scavenging...

It can be done, but it wont yield what you want...

If you add nitrous, you will need to change the piston for a forged one...

Adding a decent reed kit will improve things a bit, allowing you to get aggresive with the inlet timing and you can improve the inlet gas flow..

:D
 
zenith10 said:
hello have a look on here some good info on there just what your looking for i think
http://www.btinternet.com/~goosegog/turbodax.htm
Click to expand...

Nice little project but it was doomed to failure as 1) The TD-02 was designed for Kei class cars around 600cc, 2) he didn't appear to modify the carb for blow through operation so it's no wonder the mixture was all over the place.

As Dr Who suggests, a turbo on a conventional crankcase scavenged two stroke will create many complications. It would be easier to use a mechanicaly driven supercharger.
 
Bug One said:
Same air down there as up higher. :p

Its only a teeny tiny engine and at the moment its purely air cooled. Just thinking of ways to ensure it doesn't overheat. I'm running a bit more power than standard, and adding Nitrous might just push it over the edge! :eek:
Click to expand...

Dont radiators etc help with cooling on larger engines though? surely a small water cooling setup on a 2stroke that small will just heat the water up very quickly and have no efficient method of cooling it down?
Or maybe im just talking rubbish :o
 
Dr Who said:
A decent exhaust and porting job will have a far bigger effect that adding a turbo charger to a 2 stroke...

Turbo will add unwanted back pressure to the exhaust and mess with the scavenging...

It can be done, but it wont yield what you want...

If you add nitrous, you will need to change the piston for a forged one...

Adding a decent reed kit will improve things a bit, allowing you to get aggresive with the inlet timing and you can improve the inlet gas flow..

:D
Click to expand...
Already got a bigger exhaust.

I also have a...

Big bore kit taking it from 43cc to 49cc
Ported, polished enlarged alloy intake manifold (kept cracking the plastic ones with the extra power!)
Ported intakes.
I've advanced the ignition timing
I have a high performance 16mm carb (12mm standard)
I have an enlarged velocity stack
A K&N filter
High flow fuel filter.

My engine is not a reed type, and I have installed every standard method of upping the power. Its now running at double the speed and power than it did when I got it.

Now I'm thinking of adding this kit although I'm not sure how much power gains it would give me over the kit I already have.

However I may get it to try another idea I have. If I strip off some of the cooling fins, and manage to surround some of the head with water, I could then re route the air from the fly wheel into the intake. This should work like a supercharger.
 
moss said:
Dont radiators etc help with cooling on larger engines though? surely a small water cooling setup on a 2stroke that small will just heat the water up very quickly and have no efficient method of cooling it down?
Or maybe im just talking rubbish :o
Click to expand...
Big engine, big radiator.

Small engine, small radiator.

Might look for a second hand one off a 50cc scooter or one off a water cooled mini moto.
 
My mini moto has nitrous kit on it.. Well a twin nitrous on it. Its air cooled and copes with the nitrous well, hasnt gone bang yet. But VERY scary when you press both canisters at the same time. It goes from quick, to slow. The slow part being where its thrown you half way down the road on your head :(
 
SgtTupac said:
My mini moto has nitrous kit on it.. Well a twin nitrous on it. Its air cooled and copes with the nitrous well, hasnt gone bang yet. But VERY scary when you press both canisters at the same time. It goes from quick, to slow. The slow part being where its thrown you half way down the road on your head :(
Click to expand...
Have you any other modifications? Does it overheat?
 
Bug One said:
Already got a bigger exhaust.

I also have a...

Big bore kit taking it from 43cc to 49cc
Ported, polished enlarged alloy intake manifold (kept cracking the plastic ones with the extra power!)
Ported intakes.
I've advanced the ignition timing
I have a high performance 16mm carb (12mm standard)
I have an enlarged velocity stack
A K&N filter
High flow fuel filter.

My engine is not a reed type, and I have installed every standard method of upping the power. Its now running at double the speed and power than it did when I got it.

Now I'm thinking of adding this kit although I'm not sure how much power gains it would give me over the kit I already have.

However I may get it to try another idea I have. If I strip off some of the cooling fins, and manage to surround some of the head with water, I could then re route the air from the fly wheel into the intake. This should work like a supercharger.
Click to expand...

You can buy reed valve kits for similar engines and modify them to fit..

You will not gain much at all from forced induction while there is a piston blocking your intake 50% of the time...

If you go the supercharged route you will need a reed valve and ported piston...

Porting the cylinder, raising the exhaust port maybe, you say you have a larger exhaust, is it a proper expansion chamber designed for the engine?

http://www.adaracing.com/viewitem.php?id=22-1211&maincat=pocketbike

http://www.adaracing.com/viewitem.php?id=23-1520&maincat=pocketbike

:D
 
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