250r/400ex hybrid...

[michaelopfer]

you should post some updated pics....

[jcs003]

i need to get access to a digital camera. i borrowed one for the original pics.

[tmtracing]

did you use the 400ex wiring or the 250r wiring?

[jcs003]

Originally posted by tmtracing
did you use the 400ex wiring or the 250r wiring?

250r wiring. 400ex is VERY different.

[tmtracing]

when mounting the 250r motor. do you level it off of cases or a certain cylinder angle?

thanks

[jcs003]

Originally posted by tmtracing
when mounting the 250r motor. do you level it off of cases or a certain cylinder angle?

thanks

the cylinder angle is irrelevent. the important thing to know is (on any build) the sprocket be very close to, and on the same plane as the swingarm pivot point. if this is not accomplished you will have many problems.

[tmtracing]

Originally posted by jcs003
the cylinder angle is irrelevent. the important thing to know is (on any build) the sprocket be very close to, and on the same plane as the swingarm pivot point. if this is not accomplished you will have many problems.

when you say "same plane as swingarm pivot point" do you mean - inline or same height in chassis?
by looking at pics on this thread, that is what it looks like to me.
did you use the same rear mounting as the 250r mounting.

this is all new to me, but i have built racecars. and have worked on quads before.
i just picked up a 400ex frame with everything but swingarm carrier bearing and axle, wiring, tires and wheels, plastic, and few other things for $100. and my dad has a 250r motor in his shop from when we raced outlaw sprint karts, that needs new crank and rod, and maybe piston i am going to use.

[jcs003]

the centerline of both the sprocket and swingarm pivot should be at the same angle.

[tmtracing]

thanks, been looking at pics, and see that it is at an angle and not (if looking at a compass) at 0 degrees.
sorry i am a cad engineer and talk in my language some times.

i will be starting a 400ex/250r hybrid in near future. so watch for my build thread.

[jcs003]

Originally posted by tmtracing
thanks, been looking at pics, and see that it is at an angle and not (if looking at a compass) at 0 degrees.
sorry i am a cad engineer and talk in my language some times.

i will be starting a 400ex/250r hybrid in near future. so watch for my build thread.

im a mechanical engineer so i am fimiliar with the terminology so it will be easier to relate. i want to update things, but i have no digital camera. plus, my cell camera is terrible.