hi I run this conversion on my 225 it runs alot smoother as the front sprocket has more teeth on. Previosly I ran a 9 tooth so it used to eat sprockets and wear chains. When you spin the wheel it runs reely smooth now.
It's down angular momentum. The higher the rotating mass, the higher the rotation speed and the greater that mass is away from its axis, the more angular momentum there is in the engine. This translates to the bike being harder to deflect from its current direction and hence feeling heavier.
Whilst the difference in overall weight of a 125 to a 250/280/300 is small, most of that weight difference rotates, i.e. the piston, con rod, crank & flywheel. Also the fact that a larger engine has a larger stroke increases its angular momentum & explains why a 225 (short stroke) will feel lighter than a 250 (long stroke) despite a small difference in engine size and overall weight.
Regarding the future Trial 125 4-stroke. It has a relatively high rotating mass (there are lots more bits spinning round in a 4 stroke than a 2 stroke) plus as a sleeved down 250 it has a relatively long stroke, the same as the 250, & hence the crank, piston & con rod mass is spinning further away from its axis than in a 125 with a short stroke. Both of these factors increase angular momentum & hence the feeling that the bike is heavier when turning or moving it around.
Hi try Simon at Kelcote in Leek, he has loads of second hand gas gas pro bash plates. 01538 383547. He is a top man and will help you out with most bits as he has one or two pro s the he is breaking.
Hi , had a 2004 for 5 years and it was a fantastic bike . No problems and road very well. I now have an 09 gas gas but have kept the forks off my 04 they have a much nicer action . hope this helps.
Now youve got me thinking, how about a new frame for my gas gas in titanium. I am a fabricator just seems like their might be a market out there for someone?
Hi This is completly normal for a gas gas. Its the clutch that rattles,dont worry about it they all do it. Ive had mine nearly five years and never had any problems, just go out and enjoy, brilliant bikes!
check the rubber flap that suposed to stop muck entering the air box is not blocking the air intake. I had this happen and it wouldent rev out. I now zip tie the end to the frame next to the back break master cylinder, revs out cleanly now.
The front brake on my 07 is stock and it squeals so loud I need to wear ear plugs to ride! So far I have tried draging the brake until hot and then quenching it with water (per Ryan Young's suggestion), and sanding down the pads. Nothing has helped at all! Anyone have any suggestions???
I HAD THE SAME PROBLEM WITH MY BACK BRAKE TURNED OUT, IT WAS LEAKING FLUID, REPLACED SEALS, CLEANED DISC WITH BRAKE CLEANER AND FITTED A SET OF D.P. PADS. WORKS BRILLIANT NOW - NO SQUEALING. GOOD LUCK.
rattly clutch
in Gas Gas
Posted
no thats just how they are, they all do it