petrg Posted September 16, 2013 Report Share Posted September 16, 2013 My son has a gas gas 50 cadet 2007, he uses the clutch /gearbox with ease, but the engine is really really lacking in grunt.. I saw somwere a 70cc big bore kit, but cannot find it now.. I spoke to gas gas uk, and they can get one for Quote Link to comment Share on other sites More sharing options...
lineaway Posted September 16, 2013 Report Share Posted September 16, 2013 (edited) The engine has always lacked lower grunt. Best thing to do, is for the boy to start learning proper clutch control. Myself I would just leave the bike alone till you are ready for a 125. It`s always been a great starter bike. The new ones are supposed to have a new motor, interesting to see why. Edited September 17, 2013 by lineaway Quote Link to comment Share on other sites More sharing options...
nelly1 Posted September 17, 2013 Report Share Posted September 17, 2013 The engine has always lacked lower grunt. Best thing to do, is for the boy to start learning proper clutch control. We ride at 7000ft plus elevation, you are spoiled power wise. I`ll take my riding choices. not really sure what your saying there flower? Quote Link to comment Share on other sites More sharing options...
lineaway Posted September 17, 2013 Report Share Posted September 17, 2013 Nelly, yeah typing and drinking is not one of my strong points! Quote Link to comment Share on other sites More sharing options...
telecat Posted September 17, 2013 Report Share Posted September 17, 2013 The engine has always lacked lower grunt. Best thing to do, is for the boy to start learning proper clutch control. Myself I would just leave the bike alone till you are ready for a 125. It`s always been a great starter bike. The new ones are supposed to have a new motor, interesting to see why. Probably because the old is not available. At that level the engine is a supplied unit rather than a Gas Gas One. Beta hit the same problem with the REV50. The 4 speed went because the supplier would not supply at a price Beta reckoned would make the bike worthwhile so they built their own. The 50 was a smaller 80 unit. Unfortunately it wasn't viable to do the 80 and the 50 so the 50 was knocked on the head. Quote Link to comment Share on other sites More sharing options...
sting32 Posted September 17, 2013 Report Share Posted September 17, 2013 Did I not read that others have put the 80 piston and cylinder on the 50 before? not sure what else is involved, and not sure how cost conscious that would be to do either, with new parts. Quote Link to comment Share on other sites More sharing options...
lineaway Posted September 17, 2013 Report Share Posted September 17, 2013 Mitch, the confusing thing on the cadet is the engine started out a 50. Was bumped to 68cc, hence the txt70, then stroked to 72.5cc. The 50 class is small wheel only. (Not for the cadet) This bike fits in two other classes. Great little bike, but did not know they made an 80 kit. The boy always had an 80 kit available. Quote Link to comment Share on other sites More sharing options...
sting32 Posted September 18, 2013 Report Share Posted September 18, 2013 Thanks for straightening that out, Since I dont have any kids, that young to worry about... I didn't worry about it when I did, he had to grunt just like I did on a rebuilt TY80... BUT, the best small wheel bike I knew of (being older and cheaper than say the nice Beta that you could setup with Big or small wheels) was the 2000 or so, sherco 50 dad sold a year or was it two years ago. It pulled my fat butt around and would wheelie, I was still over 230 at minimum by then, even with the no-clutch setup, I was impressed as hell. IT had Bicycle rims and trials bicycle tires on it, helluva lot better than the chinese tires I had on MY stepson's Ty80, wish we'd had it when My son was that young, but it was NEW probably when that was happening. Some really Lucky kid in Douglass (avta club) got it now. so that is all I know. Quote Link to comment Share on other sites More sharing options...
charlie chitlins Posted September 18, 2013 Report Share Posted September 18, 2013 Very quick-revving motor. Maybe a flywheel weight would help. Quote Link to comment Share on other sites More sharing options...
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