DTR-250 I added the R for road. Converted DT Enduro to a road bike, engine/trans rebuilt, mild porting, VM38 Mikuni, Jemco pipe ceramic coated, powder coated frame, RD400 forks/triple clamps with Race Tech emulators and springs. Alcantara covered seat, '74 RD350 Ruby Red w/Honda silver/grey fenders. front brake is FZR600 rotor with R6 caliper, Galfer SS line new M/C & levers. Rear drum brake is 'arced', LED 12v lighting. The finished bike weighs 262# (one gallon of gas) front =124 47.4% rear = 138 52.7% rake = 25.5*, wheelbase =53.25"
[img][/imgfile:///Users/garywestendorf/Pictures/Photos%20Library.photoslibrary/Masters/2021/05/31/20210531-162702/PICT0006.JPG
[img][/imgfile:///Users/garywestendorf/Pictures/Photos%20Library.photoslibrary/Masters/2021/05/31/20210531-162702/PICT0006.JPG
That looks FUN!
Hellyea.com
It is fun, nice and light, nimble, makes the right noises. I built it for my Brother, I'll deliver it this week. The old DT bikes of the '70s make a pretty good platform for this type of conversion because Yamaha (and others) didn't yet know how to build a purpose built dirt bike. I did brace the frame just a bit to help with the added traction of the Avons on pavement. Geometry is right on for what it is. I have an RT 360 motor that is a bolt in for this chassis and I'll build that motor over the winter for next season, 250 is good for now. I have three others that I'm working on same basic idea.
Cheers, 50gary
Here's an R/DT360 we built a few years ago for a 6hr endurance race at a local kart track. Looks to be pretty similar spec.
(https://i.ibb.co/fnLsTGm/838-A594-F-5187-4157-BA67-F49-D2-EE4040-B.jpg)
(https://i.ibb.co/8x5YzF5/62-CDDB11-6195-44-FC-A41-C-B33067013-B50.jpg)