Forced induction 100cc

**gatch** · 22nd September 2012, 00:47

Originally Posted by Sketchy_Racer

Hey champ, Yeah there is plenty of whine, this is mostly due to the tooth count/pitch dia ratio is out of the recommended window. Interestingly is is only noisy at lower RPM and shuts up once the RPM come up.

What gears are you after ?

I 'may' be able to help.

**husaberg** · 5th October 2012, 20:24

Originally Posted by speedpro

Some sort of power absorber brake thingy from trucks. They are an Eddy current type of brake but checking their specs they could draw a lot of current but I don't know what sort of power they would absorb at that current, or as stated a regular car disc brake and load cell on the cailper torque arm.

Are you mean like a Telma electric brake?

**carburator** · 6th October 2012, 07:46

Originally Posted by Brian d marge

im at those same crossroads......3d scanner , welder, or a very rare scotch whiskey

stephen

Buy the welder, knock up some stuff, sell it then get the whiskey... pitty i don't drink as there are a couple of bottles
under the kitchen sink..

**speights_bud** · 12th October 2012, 06:33

So hows it Going Mr Glen?, you dun gone all quiet recently, hows bout a video with the zorst on running?. Doc's given me another couple weeks off work until this tendon heals and I'm bored shitless

**Sketchy_Racer** · 13th October 2012, 17:19

Yeah have gone a bit quiet, I have been busy with making the dyno the last few weekends and then got sick.

I have had the bike running and tried to dyno it, but found out that my battery is stuffed and was blanking the ECU so need to sort a new battery. Oh it made 9HP with it firing every second fire. The supercharger isn't working very well at the moment so I need to look into that. Got it upto 10 PSI then I think it nipped up because it has now dropped to 5PSI. I have some more 3 lobe rotors made up now so will try them at some point.

Might have a play in the shed tomorrow, the weather here is SHIT

**husaberg** · 13th October 2012, 17:23

Originally Posted by Sketchy_Racer

Might have a play in the shed tomorrow, the weather here is SHIT

If it make you feel any better, the weather here is also shit. Far shittier than normal

**Grumph** · 13th October 2012, 18:17

Originally Posted by husaberg

If it make you feel any better, the weather here is also shit. Far shittier than normal

Highly implausible....it better get fine for next weekend.

On the plus side though, if it's like this I can jet the bucket down as it will be very effectively water cooled....

**husaberg** · 13th October 2012, 18:21

Originally Posted by Grumph

Highly implausible....it better get fine for next weekend.

On the plus side though, if it's like this I can jet the bucket down as it will be very effectively water cooled....

its bloody cold too. So Bring the wet tires as well cause it has been crap since September..I will see ya there anyway.

**jasonu** · 25th December 2012, 07:32

Any progress???

**TZ350** · 25th December 2012, 10:19

Originally Posted by Sketchy_Racer

I have had the bike running and tried to dyno it ... Oh it made 9HP. The supercharger isn't working very well at the moment so I need to look into that.

Hi Sketchy I love following your progress, it sounds like your on the right track as I have found that bikes invariably go ferrel before they start to behave. I am looking forward to seeing it all come together in the new year.

**Grumph** · 25th December 2012, 15:30

Originally Posted by Sketchy_Racer

Yeah have gone a bit quiet, I have been busy with making the dyno the last few weekends and then got sick.

I have had the bike running and tried to dyno it, but found out that my battery is stuffed and was blanking the ECU so need to sort a new battery. Oh it made 9HP with it firing every second fire. The supercharger isn't working very well at the moment so I need to look into that. Got it upto 10 PSI then I think it nipped up because it has now dropped to 5PSI. I have some more 3 lobe rotors made up now so will try them at some point.

Might have a play in the shed tomorrow, the weather here is SHIT

In my experience, blown motors are one step sideways, one step backwards, half a step forward....and if they ever run right for any length of time, paranoia is a normal state of mind....

At least ours was on Meth - when things got really grim, we could have drunk the bloody fuel....

**speedpro** · 25th December 2012, 17:44

It all seems so easy when you talk about doing it. Heat is a killer as has been said, and making the head gasket a dry joint is very good advice.

My bike is turbocharged so shared a lot of problems. We only ever had it running "right" a few times and it still makes me smile thinking about those times. The sense of satisfaction makes it worth perservering. It's a shame the power your motor made was disappointing but hopefully it's a simple to solve problem. Excellent work so far.

**Sketchy_Racer** · 26th December 2012, 22:18

Glad to see people are still keen on seeing how this thing is turning out, sorry it's gone so quiet end of year work has been getting out of hand.

I have done some testing with the roots charger and I am not happy with it's performance, so I am currently going down another route that is even more interesting (well, to me anyway)

I am going to make a centrifugal supercharger using a IHI RHB31 impeller and diffuser with my own design of the traction drive planetary gearbox. It's cool because there are no gears and I can run easily a 1:10 ratio.

Hopefully I can get some decent boost pressure and I have an idea on how I am going to control boost levels but more on that in the new year.

Hope everyone had a go christmas!

Cheers,

-Sketchy