Trials Bike Build/conversion?

[rizzer]

FUUUCK!!! I just lost my front forks!!!

kept it in the trunk of my car and when the wife went to the car wash, she took it down and left it there...and this was about a month ago so it's long gone now

NEVER trust the missus with your bike parts!!!!!!

[djones745]

Originally Posted by rizzer

FUUUCK!!! I just lost my front forks!!!

kept it in the trunk of my car and when the wife went to the car wash, she took it down and left it there...and this was about a month ago so it's long gone now

NEVER trust the missus with your bike parts!!!!!!

damn that sucks! I don't leave the missus alone with any of the herd- next thing I know they'd be on the front lawn with 'free to good home' signs on 'em!

[loncin]

Hi guys what a great site,i have just built a trials bike special, yamaha DT chopped frame,loncin big bore 110cc pit bike engine, folks shortened 3 inches, swinging arm lengthened 2.5 inches to tale 400x18 tyre,52 tooth rear sprocket, but may have to go bigger, had the first ride today & its very good just a few bits to fettle,

[loncin]

http://s1072.photobucket.com/albums/w371/loncin/ here are some photes,

[LucasLeader]

Originally Posted by loncin

Hi guys what a great site,i have just built a trials bike special, yamaha DT chopped frame,loncin big bore 110cc pit bike engine, folks shortened 3 inches, swinging arm lengthened 2.5 inches to tale 400x18 tyre,52 tooth rear sprocket, but may have to go bigger, had the first ride today & its very good just a few bits to fettle,

Cutting the down tube out of the frame probably isn't a good idea. I don't know if the engineers design the frame to be strong enough without the down tube and then add it just for motor mounting points and protection, but probably not.

[loncin]

Originally Posted by LucasLeader

Cutting the down tube out of the frame probably isn't a good idea. I don't know if the engineers design the frame to be strong enough without the down tube and then add it just for motor mounting points and protection, but probably not.

The top tube is38mm, extra plates on the yoke suport and just under the tanks and extra 25 tube from the cut off point to the back under the seat, you would have to put a truck on it to bend it, and its only for light trials work,

[LucasLeader]

Oh good. Sounds like you have it covered.

[motojunky]

Originally Posted by loncin

Hi guys what a great site,i have just built a trials bike special, yamaha DT chopped frame,loncin big bore 110cc pit bike engine, folks shortened 3 inches, swinging arm lengthened 2.5 inches to tale 400x18 tyre,52 tooth rear sprocket, but may have to go bigger, had the first ride today & its very good just a few bits to fettle,

Interesting, thanks for sharing. I'm curious - why not use the original DT engine?

What is the total weight of the finished project?

[loncin]

the original dt was only 50 cc and automatic so not much good, the final weight i dont know yet as i am still doing bits to it,next job is to move the foot pegs back, nearer to the rear wheel , and also a bigger rear sprocket gone from 38 to 52, now going to try 64 try and get it softer and slower still got loads of torque,

[loncin]

Well got the foot pegs moved back and up so it more stable now, new rear sprocket on it way 64 tooth this time so should take some of the snap out of it and be alot slower,