Thanks for the concise report. It sounds very positive. I'm confused about the Yamaha end can. Is this your addition, and what model Yamaha was it from? Do you have pictures? -GTSRider -- uranus <[EMAIL PROTECTED]> wrote: > Quick update on my experience of fitting the > Renegade stainless downpipes > (with the standard Yamaha end can). I've now done a > few tankfuls since > fitting and can say this much: > > 1) There is a moderate but noticeable increase in > power up to 4,500 rpm, > probably a bit higher. > 2) Power delivery is not 100% progressive to 4,500 > rpm, but then it wasn't > with the factory downpipes either. The main point > is that I feared finding > some real holes or glitches in the part-throttle > response (based on > replacing factory systems by aftermarket on other > bikes I've owned) and > that just hasn't happened, which I'm very pleased > about. > 3) Throttle response is noticeably sharper - makes > the bike feel a bit > more sporty but means I'm having to re-learn my > gear-shifting technique > somewhat to keep changes as smooth as I used to get > them. > 4) Mid-range pick-up (roll-on) seems at least as > good as before, open it > up anywhere from 4,500 to 6,500 and it charges > forward as one would > hope. The power increase over standard probably > continues to 6,500 - > 7,000, it's more noticeable at lower r.p.m. though. > 5) What happens above 7,000? I don't really know, > I find I'm going plenty > fast enough using less revs than that, for my > tastes/traffic > conditions/riding style/weather/speed cameras, etc. > The dyno graphs would > indicate that a less restrictive end can would be > needed to get much > benefit over 7,000 rpm. I'm running a 45 rear > sprocket so 7,000 rpm is > getting pretty close to 100 mph in top. > 6) The bike is a little noisier than stock, more of > a gruff and harsh > note, but the exhaust is still inaudible over 4,000 > in top so it's not > really racetrack loud. I've got a dB meter but not > got round to using yet, > and probably won't for a while (ditto about putting > the installation > pictures on the web, I seem to be playing catch up > at work since > Christmas). Also, I reckon that the internals of my > Yamaha end can are at > least partly shot, various rattles and noises come > from inside it and I > always thought it was a little loud by new bike > standards. > 7) Cosmetically the bike looks a lot better. > ============================== > David Thurgate (for Name-Shop) > http://www.name-shop.co.uk/ > [EMAIL PROTECTED] / [EMAIL PROTECTED] > +44 [0]20 77035349 > +44 [0]794 1158849
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