Scooterotica

had a little delivery from the states, my new piston, its the first piston ive bought that comes in a drawstring bag, i took a pick next to an old t5 piston to compare sizes, its a monster.i was originaly thinking about lightening the piston, but its that nice i dont think i will do anything to it, lightening the gudgeon pin was on my list of improvements, but its already done, crankshaft next.IMG_1818_zps0seiwm7t by stephen holt, on Flickr
IMG_1816_zpsinxywl2c by stephen holt, on Flickr
IMG_1817_zps81anvqzy by stephen holt, on Flickr

got my head back today, well pleased
IMG_0129_zps3niw7bqp by stephen holt, on Flickr
IMG_0128_zps2envr1yc by stephen holt, on Flickr
IMG_0127_zpsfoqckx5i by stephen holt, on Flickr

got my engine case back so ive spent some time in the garage working on it, got the cylinder on the case for the first time.
IMG_0170_zpsrrqf2gpm by stephen holt, on Flickr
IMG_0171_zpsdxhwqypq by stephen holt, on Flickr
IMG_0172_zpsy4i54a3g by stephen holt, on Flickr

Looking good.

I had a similar build for a water cooled TS1 a few years back. In order to feed fuel into the crank case mounted reed valve, I cut the frame behind the engine-mount tube and was left with this:

What you can't see is the rear shock, which mounted almost horizontally above the remainder of the frame tube. You can just about see it here:

The fuel tank was constructed around the shock, so it looked like this:

The whole show was covered with this:

wow thats some serious work there, what was the performace like with the case induction, and did you have a boost port directly to the cylinder so not all the inlet charge goes into the crancase, i presume it was reedvalve, have you more pics of the engine, have you still got the scooter ?

I got the scooter running, but sold it before it was completed. The scooter was pulled apart and the bodywork when one way and the engine now resides with Pete Fay, who has since become a regular acquaintance.

The steel-lined TS1 barrel had two boost ports where the inlet would have been, fed directly from the reed. The reed was from a CR500, so flippin' huge. The pipe was a Jahspeed hydraulically formed item, adapted specifically for the unusual route. The radiator came from an RD350 and was completely hidden beneath the false tool box. The cool air was ducted beneath the front mudguard, through the rad, and out the floor: no need for lots of holes in the legshields.

The best, and worst thing, was the electric start. I spent ages designing and manufacturing the system using a starter motor with a right angled thrown pinion. I did some of my best machining and welding to make it. When I finally got it all wired up and pressed the starter button, it turned the engine over in the wrong direction. Doh!

Just a couple more photos, before I get accused of taking this thread off-track....

you did all that and no torque wrench

oh no, that must have been soul destroying, very impressive work none the less, many years ago a had a friend who owned a suzuki ap50, he could sit on it and push it backwards and drop it into gear and start it up running backwards, very funny to see, my case has gone to have some more welding done, heres another pic