1968 Yamaha YAS1C

1968 Yamaha YAS1C Twin 125cc

The old seat was totally rusted out. The foam and cover had been eaten by a mouse or rat. This is the old seat pan from a 1974 Yamaha DT100.  I hacked the mounts off the old seat and welded them on to the "new" seat pan.

Won't win any awards, but it's better than what it was before. Probably going to rivet the vinyl in the corners.

Here it is with the side trim and Clubman bars.

This is how you know it's barn fresh.

New sealed battery, EBC brake shoes (thanks Benji!), Michelin Gazelle tires, tubes, and replaced some broken spokes. Oil pump has been bypassed, and seized steering dampener removed. No permanent modifications have been made.

More tasty AS1 pix: http://motonut.com/YamahaAS1GYTKit.htm

00140 Puch Magnum

74cc Gilardoni kit, Simonini pipe, 28 mm OKO. Powder coating by West Coast Powder Coating. Gonna rip once it's finished.

103 Polini Seizure

103 polini 65cc phbg simonini pipe treats china cdi

What's that hiding in there?

 It broke the clutch pad!

Ah, one of those guys sheared off or got sucked into the clutch at high revs...

 Coil marks on the high spots of that magnet material.

Seize marks.

 Scored.

 Man those ports are cray cray.

 Ouch.

 Detonated.


CUZ IT AIN'T CASE MATCHED!!!!1!

Reed block is fine. Is that enough permatex?

 Motor sure does look cool.

Ahmed's Whizzer Rebuild

Ahmed had wrecked the shit out of his 60cc whizzer. I replaced the front end, rebuilt the front hub with a solid axle instead of quick release (!),  re-attached the clutch cam housing and added a lever with the correct amount of cable pull so the clutch would work, rebuilt the axles, tuned the carb, fixed the kill switch, replaced the broken throttle with an old Suzuki control, rebuilt the back hub so the brakes would work and the chain ring wouldn't rub on the brake arm, added a front brake (!),  trued the wheels and generally tightened everything to spec w/loctite. My final verdict after the test: whizzers are fun but totally dangerous. I gave Ahmed an extra helmet and told him he wasn't allowed to crash anymore.

Cute!

 

1976 Yamaha DT 100 Cafe Racer

64 mph

12 hp @ 7,000 RPM

Tuned carb

Oil pump deleted for premix conversion

Re-geared 17 x 36

5 speed gearbox

Tuned clutch engagement for rocket-like take-off

Re-wired - voltage regulator, hi & lo beam, brake lights, instrument cluster, neutral light, & custom ignition switch. Battery free!

Custom headlight lens uses 1157 or equivalent bulbs

Custom bodywork & fairing

Clubman bars

Underseat storage

Locking steering

Helmet lock

Historical plates - Tax free status!

Title

ob1 repairs coast to coast

props to Len at Autobahn in Cincy