Yup, that looks like it, low seat height, underslung pipe, aluminum tank and dual shocks.
It was quite a bike in its day. Thought they'd never be able to make a bike better than that!
By the standards of the day it was incredibly light and 30hp felt powerful. That aluminum tank took a gallon,
and it would get you 20 miles with no reserve. The point ignition was always a curse, especially if near water or sand.
And while it was the first bike I felt I could jump from 6-8 feet height, soon the underslung pipe would be squashed.
I liked the vid (Steve McQueen, Any Given Sunday?), it does bring back memories of what that bike was like.
It would run full throttle at 65mph for as long as the gas would hold out.
My son is working at filling in the mid-range on the DT swap. It is a heck of a time of year to be jetting, temps run from 10c to -20c.
The old "do a plug chop and tell us what you see" is not as simple to do as it is to say, but he is getting it. Jetting the DT carb in the 200 range now.
He is putting together the DT200 bottom end with the aircooled cylinder into a spare Blaster frame to try its gearbox out.
We easily drilled the back case out (it was all aluminum, no steel bushings) for the swing arm mount and mounted the engine in a spare frame.
He has got it started but it will be a while getting the spare Blaster all together. Will be a good test mule and repository of spares.
I don't get to the Yamaha shop very often, but will check out those parts and post the info.
This below was my first "dirtbike" (followed by an 72 XL250, then the 74 CR250, a 76 DR250, then a 79 XL500, 85 XT600 and finally the KTMs).
I put trials tires on that 67 150 Dream and drove it where no street bike should ever go, pontoon mufflers and all.
