It's a finished now & running great...gadgetman wrote:How is this bike progressing not heard anything for a while
Had an issue with the Vespatronc kit - so have now swapped that for a standard flywheel & stator with a HHPv4 programmable cdi from SIP.
I took it for a short blast out this morning - which is the first proper ride I've had on it since it was dyno'd a few weeks back - and the first time I've properly tested the engine & opened it up through the all gears.... and am really impressed with it.... came back with a git big stupid grin on me face
I've now swapped the JL Curley pipe that I had on it for one of the proper Quattrini pipes.
It did go well with the Curly pipe & sounded lovely, but it turned out to be more of a torquey touring exhaust.The motor was dyno'd @ just over 19hp & 17lb/ft of torque on Scooterotica's dyno with the JL Curly pipe - making power from just 3k and peaking @ around 6k.
So in pursuit of a bit more power I switched to the Quattrini pipe & its now making just over 21hp - torque has dropped a little to just over 15 lb/ft & power now starts @ 4.5k & peaks @ 7.5k so everything's moved 1500rpm up the range.
It pulls really strong through all the gears & can easily loft the front as it comes on pipe in 1st + 2nd - and if feels like it's got longer legs than it did with the JL pipe on.
Both results are pretty good for a little 172 kit - and (apart from the required mods to the casings) this kit is basically 'out of the box' with no further tuning work done to the barrel or piston - so there's still some scope to tune further yet...
005 by dent.graham, on FlickrSent from my iPhone using Tapatalk
