Raizer Posted November 19, 2020 Author Share Posted November 19, 2020 Haven't really kept up to date with Alex's videos lately, will give that a watch soon though! Used to chat with him a bit on another forum, but all the noobs with China scooters got to him I think and he stopped posting haha. Lol so this: "plan to attempt removing the liner, adding the extra ports like my current one and seeing if I can make a head on the lathe and get it to run" ain't going to work out. Casting isn't too bad, not great but a bit of file work and a coat of paint and it'll be mint. Major giveaway it's not genuine, Suzuki kits are 72CM3 and that font is very China spec too lol Piston is junk IMO And the reason I can't just port the shit out of this liner as I'd planned is this is at BDC: Blue marks are to show the ring pin locations And well below BDC: Anyone got some thick wall ductile iron tube kicking about?? Quote Link to comment Share on other sites More sharing options...
tortron Posted November 19, 2020 Share Posted November 19, 2020 what diameter? could press a stock liner out of something Quote Link to comment Share on other sites More sharing options...
Raizer Posted November 19, 2020 Author Share Posted November 19, 2020 Looking at going to 49mm bore I think Looking at Lifan 110 and Honda CT90's as potential liner donors Quote Link to comment Share on other sites More sharing options...
tortron Posted November 19, 2020 Share Posted November 19, 2020 those shitty 2 stroke bicycle kits have a 48mm piston sorted m8 1 1 Quote Link to comment Share on other sites More sharing options...
Raizer Posted November 19, 2020 Author Share Posted November 19, 2020 6 hours ago, tortron said: those shitty 2 stroke bicycle kits have a 48mm piston sorted m8 I was even contemplating pistons for weird rotary hoes and eastern European chainsaws thanks to some of @ESKIN8R's scouring of Meteor Piston catalogs haha It still bugged me that my original piston that is meant to be a +1.50 from an old TS75 doesn't match up to what's listed for TS/TM/RV75 or A80 models which are all meant to have pretty much the same piston. So I pulled my top end off yet again, quadruple checked the measurements and spent the couple of hours reading piston catalogs again, and well it's paid off as I have found only one piston from TKRJ that matches almost every measurement!!* I give you the piston from a Yamaha YG-80! Even better news is that I seem to be able to order them in both 1.75 and 2.00 oversize. Another couple giveaways are that all the TKRJ pistons for Suzuki have notches for getting the pin clips in/out, none of the Yamaha ones do and also the ring locator pins are around the 4 and 8 positions, Yamaha are at about 2 and 10. *The only measurement that doesn't match up is the overall length, mine is 2.2mm shorter and has some kinda obvious file marks where it has had clearance added to clear the crank webs at BDC ha 7 1 Quote Link to comment Share on other sites More sharing options...
Raizer Posted November 20, 2020 Author Share Posted November 20, 2020 Toshihiko at TKRJ pistons got back to me informing me that they don't have stock of the 1.75 or 2.00 over options, but they have the 1.50 I've already got available. Ended up asking him for exact measurements of the piston, they are between 48.450 to 48.470. My current 1.50 measured up at 48.305 and the cylinder at 48.495. Worst case fitment is 48.495 - 48.450 = 0.045 clearance in the cylinder! So it would actually need a slight hone to fit!! Also if I ever order another Chinese/Taiwanese kit I'm granting permission for everyone to give me an ass kicking! 2 2 Quote Link to comment Share on other sites More sharing options...
Raizer Posted November 27, 2020 Author Share Posted November 27, 2020 Well that sucked. The forks started bottoming out a little on small bumps, then they stayed down and the front went light, front wheel washed out doing bang on 50k as it's a moped and it can't exceed 50k... Huge thanks to @Tumeke for pulling the bike off me, my leg was tangled in the kickstart. Also massive thanks to @johnnyfive for the punishing CT loaner! 4 2 4 Quote Link to comment Share on other sites More sharing options...
Raizer Posted November 27, 2020 Author Share Posted November 27, 2020 Also it just hasn't got the torque range to pull 5th gear, maxes out 4th at 80-90 at ALL the rpm, change to 5th and it drops off pipe and sits on 65-70. Discovered on a steep downhill it will come on pipe eventually in 5th, but fuck it'll never get there without a big ass hill or a typhoon level tailwind! New piston is almost here, so I'll set it up again and just keep it as a city pester as it's a blast around town. Thinking CG125(?) disc front end and a few other improvements will be a good idea and also have thoughts on building something a bit more serious with my spare rolling frame. 6 Quote Link to comment Share on other sites More sharing options...
Popular Post Raizer Posted January 26, 2021 Author Popular Post Share Posted January 26, 2021 New piston arrived, still sitting in the package waiting for me to find the enthusiasm to attempt fixing the A50 again. But came across this gem while looking through a few pics at Mum's earlier Where it all started! haha 14 1 Quote Link to comment Share on other sites More sharing options...
tortron Posted January 26, 2021 Share Posted January 26, 2021 What a scene! 2 4 Quote Link to comment Share on other sites More sharing options...
Kimjon Posted January 26, 2021 Share Posted January 26, 2021 Is that David Bain? ^^^ Just read all this over again. You gotta get that thing going again man. 1 1 Quote Link to comment Share on other sites More sharing options...
Popular Post Raizer Posted June 3, 2021 Author Popular Post Share Posted June 3, 2021 Still done pretty much nothing at all with bikes since coming off the A50, but running about on the Mrs Let's 2 picking up parts for my van recently has semi reignited the spark for 2 wheel life, also this has happened 1983 Honda Stream, the original Honda 3 wheel scooter that the Gyro grew from! And yeah this too 197? Yamaha Chappy with Honda CF50 forks and a lot of patina, should be a good match with my CF50 "Chandler" Also on the hunt for a Suzuki JR80 engine, for reasons... 12 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.