Supercharging?

**ducatilover** · 25th May 2006, 13:38

how dp people go about supercharging a small engine? is it possible to say, mount the supercharger on top of the carbs?
if some idiot was thinking of doing this to a vt250 spada how would said idiot do it? please help me out here.... im thinking a subaru vivio sunit or maybe a small digger unit. i dont want a turbo cos i hate the thought of lag

**Lou Girardin** · 25th May 2006, 16:29

The most difficult part will be the drive off the crank. A well designed turbo will be easier to do and lag shouldn't be a problem.
However, if you buy a VRod we can do a Sprintex blower for it.

**Mr. Peanut** · 25th May 2006, 17:58

You could try one of these, 750cfm should provide a bit of boost for a Spada. That said, I have a strange feeling this project won't eventuate. The potential costs are huge for a relatively small gain in power.

http://www.esuperchargers.com/

**imdying** · 25th May 2006, 18:12

Originally Posted by MrPeanut

You could try one of these, 750cfm should provide a bit of boost for a Spada. That said, I have a strange feeling this project won't eventuate. The potential costs are huge for a relatively small gain in power.

http://www.esuperchargers.com/

Bahahahahahahah, I should red rep you.

**scumdog** · 25th May 2006, 18:17

You need a shit-load of time AND fair bit of money UNLESS you have good machining skills and a good workshop.

But the rewards are really worth it, trust me. (despite broken parts and broken bank account.)

**Mr. Peanut** · 25th May 2006, 18:22

Originally Posted by imdying

Bahahahahahahah, I should red rep you.

Oh and you've done this have you? How do you think ram air systems work? Anyway he was asking how an IDIOT would do it

**Toast** · 25th May 2006, 18:32

Seems to be a few supercharging kits advertised in the back of UK mags from time to time, claiming 200hp+ from R1s etc.

Some did some speed testing on supercharged Gixxers and Bandits, and reckoned that they were unbelievably smooth, and massively powerful.

It's a shame they haven't taken off more on bikes, as I think they're better suited to them than a turbo. Even if less powerful, bikes don't need that much more power (how rideable is a 500hp 'Busa? Not very)

**scumdog** · 25th May 2006, 18:35

Originally Posted by Toast

Seems to be a few supercharging kits advertised in the back of UK mags from time to time, claiming 200hp+ from R1s etc.

Some did some speed testing on supercharged Gixxers and Bandits, and reckoned that they were unbelievably smooth, and massively powerful.

It's a shame they haven't taken off more on bikes, as I think they're better suited to them than a turbo. Even if less powerful, bikes don't need that much more power (how rideable is a 500hp 'Busa? Not very)

Guy down this way had a supercharged V-Max, biggest problem was keeping the front wheel on the ground.

**imdying** · 25th May 2006, 19:04

Originally Posted by MrPeanut

Oh and you've done this have you? How do you think ram air systems work? Anyway he was asking how an IDIOT would do it

I don't need to do it, I can do simple math. Ram air? You equate a bike pushing through the air at 100mph to that little electric fan?

But technically you're correct, that is what an idiot would do/use

**Ghost Lemur** · 25th May 2006, 19:29

Originally Posted by Toast

...Even if less powerful, bikes don't need that much more power (how rideable is a 500hp 'Busa? Not very)

From what I've heard, Ghostrider's 'Busa is extremely rideable. Although a set of tyres last ~80k (that's eighty kilometres!!!). Hense why he's never done a big run on them, just little clips of it.

**N4CR** · 25th May 2006, 19:46

Hmm I'm looking at turbo issues, easier than supercharging as placement is not as important (no direct drive etc just exhaust and oil to turbo and air out etc). Try NOS or if you want to do SOMETHING and easy get some .7Amp 80mm computer fans (check delta models out) and chuck them on your venturi on the carbs... in the airbox if your design is similar to the zxr. It might get you a tiny bit more low down, I was going to do it. 4 of the suckers....

**onearmedbandit** · 25th May 2006, 19:47

Originally Posted by imdying

I don't need to do it, I can do simple math. Ram air? You equate a bike pushing through the air at 100mph to that little electric fan?

But technically you're correct, that is what an idiot would do/use

Those fans are a joke. Peter Brock might want to sell them alongside his fuel saving magnets.

**scumdog** · 25th May 2006, 20:08

Originally Posted by imdying

I don't need to do it, I can do simple math. Ram air? You equate a bike pushing through the air at 100mph to that little electric fan?

But technically you're correct, that is what an idiot would do/use

REAL ram-air works, even the temperature drop alone is worth horsepower.

Maybe not so many hp on a little bike engine at 100kph...

**imdying** · 25th May 2006, 20:10

Originally Posted by N4CR

if you want to do SOMETHING and easy get some .7Amp 80mm computer fans (check delta models out) and chuck them on your venturi on the carbs... in the airbox if your design is similar to the zxr. It might get you a tiny bit more low down, I was going to do it. 4 of the suckers....

You are wasting your time.