2-fiddy time!!

[rookie]

it said my bike only had 92hp and topped out at 240kmh... i've seen 265kmh on the speedo so there is some sort of discrepency.

The henderson dyno is the latest model dynojet dyno so will be far more accurate, my bike will be hitting it when i take it in for a real good tune.

ohok...i dont doubt that red baron dyno isnt the most accurate on the planet, but the speedo isnt always the most accurate part of the bike.

as for the "toppping" out at 240, is that the speed reached when they stopped dynoing?? Cause i heard that they stop the test when the power starts dropping off...if this was the case...then there would be speed unmeasured due to them not running the bike through the full rev range.

If they did run the bike through the whole rev range, then I could show up with a huge sprocket on front, tiny sprocket on the rear, a huge oversize rear tyre and record a top speed 240+ at 19,000rpm!! (assuming the engine is doing 19,000rpm when the tacho indicates 19,000rpm!!!)

[hurricane_r]

well my mc19 cbr250r dynoed in at 33hp, orig 40hp, which was apparently normal, think they ran it for free cause i purchased it from them

[rookie]

well my mc19 cbr250r dynoed in at 33hp, orig 40hp, which was apparently normal, think they ran it for free cause i purchased it from them

nice...cheers for that.

thats really good to have an engine producing 40hp when new and then recording 33hp at the wheel around 17 years later

[rookie]

ok took the bike to red baron as planned.

The guys did two runs....first was to dry out the tyre as the bike was weaving all over the place. They were also trying to blow the cobwebs out of the cylinders where a heap of fuel was dumped through the exhaust system gassing the guys inside the chamber.

The second run went without hassles but again a heap of fuel ended up into the lungs of the guys in the chamber.This time they ran the bike right to the redline...man wat a noise...im not sure how sound proof the chamber is but man...the standard can makes plenty of noise!!

clearly the bike wasnt in the best of tune...when i asked how easy it would be to rebalance and tune the crabs...they reckoned a new set of carbs were needed!!! A price of $1200 was quoted at the time ...excluding labour!!!

anyways the old girl recorded just over 33hp.

I also found out that the bike is de-restricted as the theoretical top speed of the bike is...okay i actually have an oversized tyre on the rear which acts like putting a bloody small sprocket on the back....is 230km/hr!!

anyways...pity about the weather otherwise wouldve been better and also the fact that i had to switch to reserve on the way home after travelling a mere 160km. i guess most of it ended up in the atmosphere

[Mr. Peanut]

$1200 for Carbs?

Pirates...

[rookie]

$1200 for Carbs?

Pirates...

tell me bout it...im pretty sure they hire guys with removeable lungs to work in the chambers....so they can pirate the fuel aswell

[texmo]

33ps or 33hp?

[rookie]

33ps or 33hp?

aaah...u are wise young tex

33ps rounded down pre conversion or 33 hp rounded up post conversion

[vtec]

well my mc19 cbr250r dynoed in at 33hp, orig 40hp, which was apparently normal, think they ran it for free cause i purchased it from them

nice...cheers for that.

thats really good to have an engine producing 40hp when new and then recording 33hp at the wheel around 17 years later

If it was 40hp when it was new, that would work out to be close to 33 Hp at the wheel anyway, so it would appear that it hasn't lost anything at all. Nor should you expect the bikes to "lose" power over time as long as it is still full compression, the carbs are tuned and it is getting spark. There is no reason for it to lose power. On my 16 year old CBR250RR I was getting off the speedo on Puke chasing 400's and RGV250's, and managed repeated 1.15's around the circuit on my 16 year old bike. Age means nothing as long as there is nothing physically wrong with the engine.

[texmo]

If it was 40hp when it was new, that would work out to be close to 33 Hp at the wheel anyway, so it would appear that it hasn't lost anything at all. Nor should you expect the bikes to "lose" power over time as long as it is still full compression, the carbs are tuned and it is getting spark. There is no reason for it to lose power. On my 16 year old CBR250RR I was getting off the speedo on Puke chasing 400's and RGV250's, and managed repeated 1.15's around the circuit on my 16 year old bike. Age means nothing as long as there is nothing physically wrong with the engine.

Slight carbon build up on the exhaust manifolds would restrict power. Build up of grime in the carbs. A dirty spark plug unless it was brand new. A whole lot of very small things can make the biggest diffrences. For example I bet his powerband wasnt in propper working order.

[vtec]

Haha, yeah you have to regularly replace your powerbands... being a 4 cylinder it means you have four of them.

With regard to carbon build ups, a couple of good thrashes will clear that out. Grime build up in the carbs is not due to being old, but rather a bit of neglect. If you think you've got crap in your carbs then strip and clean them. I'm sure that both of my CBR's are running at very very close to the power they were putting out brand new... I've mostly sorted out that one that I did the Coro with you on Tex, the rear shock still seems way too hard, so any bumps throws it, but I'm pretty sure it's running good power for an RR.

[texmo]

I still dont get why your bike was so much faster than mine? You said your bike was missfireing right? dosent make sence to me at all.
Oh and yeah my carbs have some grime in them but I cant be fucked cleaning them, My bike is probbly a month off. I need to buy all new front fairings as they are too badly damaged to be plastic welded. Pain in the arse...

[vtec]

I still dont get why your bike was so much faster than mine? You said your bike was missfireing right? dosent make sence to me at all.
Oh and yeah my carbs have some grime in them but I cant be fucked cleaning them, My bike is probbly a month off. I need to buy all new front fairings as they are too badly damaged to be plastic welded. Pain in the arse...

The reason why I'm accelerating faster than your bike is firstly because I'm 15kg's lighter than you (weighed myself lastnight fully clothed with motorbike boots on and wallet and cell and keys in my pockets at just over 70kg). And secondly I take much wider lines into the corners than you which means I take longer to get through the corner, but come out faster. Still the advantage you gained through going in tight and fast was more than I gained by getting good runs out of the corners, I think I'm going to have to tighten up my lines, and use more trail braking. Off the mark though, I was launching pretty close to perfectly every time, just did small front wheel lift on every single launch, and kept it well within the power range throughout the whole launch. I've jumped through F3 fields on my 250 on the launch before, only to have them roar past me before the first corner.

Also through first and second, how high up are you revving your bike? I take mine to pretty close to 19,000rpm in first gear, and to about 18,000rpm in second. Don't make me explain my reasons, it'll take too long to work out how to put it into words, and it might not make sense anyway.

Bummer to hear your bike is taking longer than anticipated, I really gained a lot from having someone faster than me. Have you checked out here?
http://www.justfairings.co.nz/kawasaki.htm
The guy does a great job. There's no way I could replicate that work in the back shed even taking months to do them. $700 though does make it expensive. And another $200 for paint. Close to a grand for a front set...

P.S. Weight is quite a large factor on bikes that are only putting out about 45hp at the crank.

[texmo]

It must be weight rember when you are following me I take diffrent lines so as you dont take me on the inside and force me to run wider.
I am probbly gonna buy them off him unless I can find some deicent ones form a wreckers but they want close to what he charges for damaged goods.
I cant wait to get my full I am so sick and tired of owning old and slow bikes.

[vtec]

Yep, you're better off getting fibreglass, as you can repair them yourself, and with your record, that would be a very good thing.

I think I'll only have three more race meetings on the 250, going to learn to ride that 600 I just got hold of. Hopefully I'll have paid my parents back for some of it by the end of the year too.

Oh yeah, I'm taking up bicycle couriering as of Monday for Deadline Express. Should keep me fit as a fiddle, and I think I could make a reasonable buck doing it too. Not to mention having to fight off the ladies as I romp around in my skintight bike shorts