felix Posted August 12, 2006 Report Share Posted August 12, 2006 Here is a picture of my Yamaha Pinky which I recently bought, it's in pretty good nick I suppose just cleaned it down and slapped some stickers on it. It's a jumpy buggar though, as soon as you turn the throttle the power is instantly there, almost enough to catch you if you're off guard, anyone know how I could make it a little bit safer? Quote Link to comment Share on other sites More sharing options...
andy m Posted August 12, 2006 Report Share Posted August 12, 2006 Hi, I have got a Pinky and it is a bit firey, and I know why. It is bored to 270cc and it is very sharp power wise. I have just purchased a 250 top end to sort it, as I want it as it should be soft power. I also have a shortened inlet manifold which is suppose to give extra torque. I notice your manifold is std though. Quote Link to comment Share on other sites More sharing options...
felix Posted August 12, 2006 Author Report Share Posted August 12, 2006 Hmm, interesting, I don't even know what an inlet manifold is I know I used to have an older TY250 (about 87) and the power was a lot softer, a lot easier to ride, however this one is soooo much lighter and the front disc brake is awesome, I think I preferred the softer power though. Quote Link to comment Share on other sites More sharing options...
fellonmelug Posted August 13, 2006 Report Share Posted August 13, 2006 The inlet manifold Bo is refering to is the duct between the carb ( you do know what a carb. is ?) and the cylinder. Quote Link to comment Share on other sites More sharing options...
felix Posted August 13, 2006 Author Report Share Posted August 13, 2006 you do know what a carb. is ? Lol, yeah I do thanks, what else can I do to smooth out the power ? Quote Link to comment Share on other sites More sharing options...
paioli Posted August 13, 2006 Report Share Posted August 13, 2006 check that some bugger hasnt taken the flywheel weight off, shorter inlet = quicker responce off the bottom Quote Link to comment Share on other sites More sharing options...
felix Posted August 13, 2006 Author Report Share Posted August 13, 2006 Thanks for clearing that up Paioli Sorry to sound like an idiot but where would I check if the weight had been taken off? Quote Link to comment Share on other sites More sharing options...
paioli Posted August 14, 2006 Report Share Posted August 14, 2006 remove the sump guard then take the four screws out of the round silver ignition cover,the flywheel weight is the slightly gold coloured band around the flywheel, should be around 27mm wide from standard, while youve got this off might be worth checking the timing marks on the stator plate line up, you will have to borrow a flywheel holder and extractor, these marks should be level, sometimes riders advance the ignition to gain a more quicker responce off the bottom, sounds like you just need to spend time getting your bike right for you, these bikes you can put into different states of tune, it just takes time to get it right . Quote Link to comment Share on other sites More sharing options...
paioli Posted August 14, 2006 Report Share Posted August 14, 2006 make that a silver coloured band . looked at wrong flywheel ! Quote Link to comment Share on other sites More sharing options...
felix Posted August 14, 2006 Author Report Share Posted August 14, 2006 Thanks a lot for the help, appreciated Quote Link to comment Share on other sites More sharing options...
kevin j Posted August 14, 2006 Report Share Posted August 14, 2006 I've never had a 250, but on the 350 retarding the timing softens it up a lot. I think stock is 2.0 BTDC, running about 1.5 to 1.7 makes it more sluggish and softer. kcj Quote Link to comment Share on other sites More sharing options...
old trials fanatic Posted August 14, 2006 Report Share Posted August 14, 2006 One more thought. I remember when i had my first TY250 mono, just got another one see my other posting, i had it tweaked by Mick Andrews and the power was very smoooooooooth perfect for a duffer like me. Now a lot of this was down to the tail silencer which are no longer available. John Shirt used to sell them however i understand from talking to Nigel Birket today they are making soon a replica, takes about a week to fabricate Quote Link to comment Share on other sites More sharing options...
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