pics of my CB-1 racebike and dyno sheet

[vonhertell999]

[vonhertell999]

im just building this, its a work in progress. It obviously is lacking almost all the body work, missing the tach.. but it pulls 50 hp, its my first bike, and i'm quite happy with it.

[oldsmoker]

Welcome to the site! Now tell us what mods you've made to get 50 hp. The  exhaust we can see, so what else have you got goin' on?....mmm.....please

[ptlcb1]

Welcome! Welcome!  Hooray, another CB-1 on the track!     What organization do you run with? 

[guntherrex]

nice results! does the bike need a steering damper on the track? That short pipe has some effect on your torque I suspect

[Falk]

mhhm 50HP is a nice result? The CB1 just to have 57hp/42kw as standart .....

Is there someting different in US? Maybe some Restrictions ore so?
Because at Wikipedia.org I found the Power with 44hp and 33kw - german Wikipeida says 57hp (so nearly  that what i know from my Bike)

[a_morti]

mhhm 50HP is a nice result? The CB1 just to have 57hp/42kw as standart .....

Is there someting different in US? Maybe some Restrictions ore so?
Because at Wikipedia.org I found the Power with 44hp and 33kw - german Wikipeida says 57hp (so nearly  that what i know from my Bike)

57 actual rear wheel bhp? Has anyone from Germany really got a printout showing that figure from a CB-1? I think we are looking at an example of ambitious Wiki editors here. I think it particularly unlikely since the cbr400 usually dynoes 55-60 with its more aggressive cam, 4-2-1 exhaust, bigger jets etc.

I think 45 is about right on a standard bike. 50 is not bad at all depending on the work done.

[Falk]

ahhh - htis is not a corrected Dyno Sheet showing Clutch Power and Wikipedia.org is speaking about rearwheel power?...

OK that explains it.

[vonhertell999]

Yes, the short pipe has an effect on the hp, but another thing done is that holes were drilled in the airbox, we did a dyno test with the holes taped up and without tape, which is shown on the sheet. We lifted the tank with a spacer and took off the tape, which had an effect on the hp as well. I will race this bike with CMRA, Central Motorcycle Roadracing Association. Same place where Ben Spies and Collin Edwards are from. The steering damper is a requirement in the CMRA rules, and we were pleased with the effect the pipe had on torque, it had no noticeable negative effect.