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First '02 Dyno.

1357 Views 3 Replies 3 Participants Last post by  CG
Taken from Motorcycle Online:

Note: Most R1's in the past have dynoed at about 128-131rwhp and about 70lbs torque.

From the desk of John Burns:
Alrighty then, I swang by Yamaha USA's lavish digs on the way in to MO HQ this morning, where I had the not-to-be-taken-for-granted pleasure of trading an '01 R1 for the long-awaited '02 version, with no monetary transaction needed. Such a deal.Riding along the freeway in light traffic, it became shortly apparent that this Yamaha is considerably quicker than a really expensive-looking BMW 850 automobile.
With 280 miles showing on the odometer, we wasted little time lashing the silvery beast upon the Dynojet 250 for a quick pull; I'm thinking 140 horsies easy, thing feels a lot snappier than the old bike...

Don't you hate when somebody drops a fact in your lap that contradicts your preconceptions? Or a dyno chart? This one makes 138.9 horses at 11,200 rpm--just four more more than the '01 bike--and 75.7 foot-pounds of torque at 8,300 rpm, five more foot pounds than the old one. It feels like more.

What gives? Simple, really, as Mike Cory at Dynojet kindly explained: it's all about the throttle response. Peak horsepower numbers between two bikes can be exactly the same, but if one bike has better throttle response, it'll get around the track (or down the street, of course) faster.

In the same way, two bikes with the same peak power and the same drag will reach the same top speed--but the one with the better throttle response will get to that top speed quicker.

Well then, I think we can safely say that the Yamaha men have come up with probably the best FI we've ever sampled on a motorcycle--as smooth in take-up as a perfectly carbureted bike, but with instantaneous snap that makes wheelying home, I mean back to the office, from lunch even easier. Who wants to mess with a clutch after a heavy Mexican nosh?

Also, where the '01 bike could get a little buzzy at 6000 rpm and 90-some mph cruising speed, the new bike hits some sort of Harmonic Convergence with the Universe and goes eerie smooth. So far, we like it. Stand by for the Superbike comparo, coming up as soon as Honda gives up a CBR954RR.
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Since I have been riding a 2002 R1 for the last 2 weeks, I have to agree with the article there. The throttle response is instantaneous (sp?) as compared to the 2002 Triumph Daytona 955i which I have just gotten rid of.

There is no lag at all between twisting your wrist and haveing the bike take off. Other than being extremly smooth the seat is actually somewhat comfortable, rode to Harrison and back last weekend and it was great, now it is snowing what gives? Anyway after the bike is broken in and the new pipe goes on I will Dyno mine and post the results here.

Triumph claimed 148hp at the crank and 138 at the back wheel, the R1 according to your info is also 138 at the back wheel, but it feels and reacts 10 times better than the 955i did. The Yamaha guys got the FI right and it was definatly worth waiting for.

Not the best pic but me and the R1 in front of the flying swan with vrombc.com guys
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What a small world. I watched you take delivery of your baby! You were showin' some guy all the nifty lights (shift light, tail light etc..) in the showroom at Pacific Yamaha.. I was .. well I can't remember why I was there exactly, but I remember I must've left a drool stain on your bike. ;)

We're going to hopefully be having a group dyno day at MAS, you should get in on that, should be late April early May.
it looks like the new R1 is right on par in the power department with the big gixxer up till you get to the top end....

I have noticed the fuel injected litre bikes always have a super smooth curve, compared to the fuel injected 600s which look more like 7k on that R1 dyno graph you posted :)
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