Forced induction 100cc

**Sketchy_Racer** · 8th September 2012, 21:41

Originally Posted by Ocean1

Very nice mate.

Didn't sound too hesitant, or is that just because I didn't see when you tweaked the throttle? I guess you'd expect a little lag with that comparably high volume in the intercooler. Still, as you say it matters not, as long as when the boogie arrives it's there in spades.

Yeah it is a little hard to explain, when using throttle opening similar to exit a corner it is extremely responsive but if you give a 0-100% throttle input there is a small delay. It doesn't bog like a carb would but rather just a small delay from when you hit the throttle open and when you get a rev.

**Ocean1** · 8th September 2012, 21:47

Originally Posted by Sketchy_Racer

Yeah it is a little hard to explain, when using throttle opening similar to exit a corner it is extremely responsive but if you give a 0-100% throttle input there is a small delay. It doesn't bog like a carb would but rather just a small delay from when you hit the throttle open and when you get a rev.

Yeah, you can possibly cut some of that with some work around the intercooler position and ducting volumes but I think it's characteristic of that set-up. If you get up around 11-12psi I believe you'll be making enough that you can live with it, eh?

**jonbuoy** · 9th September 2012, 00:11

Does your AFR weaken with the lag?

**Grumph** · 9th September 2012, 06:57

Well Done - like Crazyman, all I need now is broadband to see it....

I'm going to argue that you shouldn't have any lag...we did initially too but simply dialled up the accelerator pump stroke on the big twin choke Dellorto we used. Your setup injecting close to the head should be capable of even better response.
Richen the bugger up off idle and see what happens.

Congrats - carry on.

**Sketchy_Racer** · 9th September 2012, 07:32

Originally Posted by jonbuoy

Does your AFR weaken with the lag?

Wouldn't have a clue, no exhaust system means no O2 sensor at the moment. But one would imagine so.

Originally Posted by Grumph

Well Done - like Crazyman, all I need now is broadband to see it....

I'm going to argue that you shouldn't have any lag...we did initially too but simply dialled up the accelerator pump stroke on the big twin choke Dellorto we used. Your setup injecting close to the head should be capable of even better response.
Richen the bugger up off idle and see what happens.

Congrats - carry on.

Cheers mate.

Yeah I'm not going to worry about it right at the moment, i'll wait until it has an exhaust system and I get everything dialed in.

**richban** · 9th September 2012, 08:36

Super cool Glen. As you say for a chuck it in and start it up it is working very well. Might be time for that cam now. Make it nice a quite so that nice little super charger sound can come through. You won't be able to sneak up on me with that thing. 100 out of 10. Super impressed. Shall I start to sleeve down and de stroke my other FXR engine yet.

**speedpro** · 9th September 2012, 10:34

Originally Posted by richban

Shall I start to sleeve down and de stroke my other FXR engine yet.

You know you should be doing it anyway.

**andrew a** · 9th September 2012, 11:06

Well done Glen I'm super impresed with your work. Having started bucket racing on a mighty CT110 I would love to have a supercharged CT. If you google postie bike the Ausie boys do crazy stuf with them. I have seen a superchrged one but i wouldnt think it went properly. Any way good to see it going.

**Sketchy_Racer** · 9th September 2012, 17:19

Originally Posted by andrew a

Well done Glen I'm super impresed with your work. Having started bucket racing on a mighty CT110 I would love to have a supercharged CT. If you google postie bike the Ausie boys do crazy stuf with them. I have seen a superchrged one but i wouldnt think it went properly. Any way good to see it going.

Hey mate, yeah I did think of you and your old CT when I bought the motor. I'm stoaked to have it running it's been a huge amount of work to get it to this point! Now I need to build an exhaust and re-do some of the Devcon in the intake port and I can get on with trying to get some HP out of it.

**Sketchy_Racer** · 9th September 2012, 17:23

As I was snowed in with work (as in real work, the kind that pays money) I had some jobs for the supercharger bucket done by others. I got craig from moto-metal to take care of the welding on my plenum and have to say I am really pleased with his work!

Here's a couple of pics of the mint welding job he did for me.

http://www.motometal.co.nz/

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**Crasherfromwayback** · 9th September 2012, 17:27

Originally Posted by Sketchy_Racer

As I was snowed in with work (as in real work, the kind that pays money) I had some jobs for the supercharger bucket done by others. I got craig from moto-metal to take care of the welding on my plenum and have to say I am really pleased with his work!

Here's a couple of pics of the mint welding job he did for me.

Yeah he's a good lad that does great work. Loving your work too mate! Most excellent!

**Sketchy_Racer** · 9th September 2012, 17:35

Well after yesterday's startup and run I was wondering why my boost levels were not has high as planned, could it be that my charger is not as efficient as planned? The motor's flow is better than expected...

Nope, this dick-of-the-day left the tensioner bolt out of the supercharger cradle meaning the belt went slack and was slipping, I'm also going to take a punt and say the slipping is where a lot of the heat came from.

I haven't run it again to see the difference but I am sure it will be significant.

hopefully i'll get some mufflers to test out sometime next week and then we are in business!