ID this bike model?

[Bevel bob]

The most important element is the M1 motor, the toolbox mountings will probably be the best indicator of the frames orriginal spec. Seems likely that the orriginal bike was a Mach1 but was rebuilt with a different frame after a crash.I can't see any reason not to build as a Mach1 (with some carefull frame work) .All the parts will slowly turn up (at a cost!) ,keep the bars for restoration as they are very rare .It will cost thousands to do but by the time you are done it will worth more.

[3564cam]

Hi,
Talking of Mach1 parts,does anyone have a Mach1 gearlever for sale?Its all I need to complete my Mach 1 restoration
Regards

[JimF]

Because the rear set gear selector is scarce as hen's teeth (as is the curved kick start and brake pedal) could you maybe adapt a heel and toe shifter to use until you can source the right parts?

I thnk a guy in Thailand re-pops the curved kick start and sells them on eBay. Perhaps he re-pops the rear set gear selector.

Jim

[blaat!]

The spokes were double butted. I say were because they were rusted beyond any hope of salvage, so I clipped them all with bolt cutters. I'm currently rebuilding the wheels with new rims/spokes.

Finally got to the rear hub. It has the six cush drive splines. Does that make it Grimeca? What does that mean as far as year/model? Sorry for the poor photo:

hub cush.jpg

Thanks!

[Rick]

Every hub I've seen uses the same 6 spine cush drive like yours, the differences I know of are the number of ribs running around the circumference of the drum, the earlier hub has 7 ribs and at some point they went to 3 ribs- 7 rib on the left, 3 on the right.

rear hubs.jpg

The double butted spokes were used on Mach1s I think, maybe others.
The photo also shows the earlier axles- they were captured in the hub by the wheel bearings- not sure when they switched to the more common axle.
And, I think the hubs were all manufactured by Grimeca.
Rick

[blaat!]

Thanks Rick. Another confirmation that the later number means the engine isn't original to the older chassis. The axle has the built in, captured, bearing distance setter as well. With all the clues, I finally think I know what I have.

[blaat!]

One more question... the stator plate has two yellow wires. What type of system does this indicate? Would it have been standard on a Mach 1?
Thanks!

[DewCatTea-Bob]

" the stator plate has two yellow wires. What type of system does this indicate? "

____ There's two distinctly different alt.stator types which came with a pair of yellow stator wire-leads ! ...
The older-type -(either pre 5-speed or pre-1966, [my memory on exactly which-WHEN seems clouded lately] ), has two totally independent power-coils (and thus has only four poles), while the newer-type stator has four rather associated (dual-winding)- power-coils arranged on a 6-pole stator-core (with those 4 coils all sharing two separate stator-windings, separately connected to the pair of yellow wire-leads).
__ So in either case however, your alt.stator indicates the type of power-system which (normally) employs a battery.


" Would it have been standard on a Mach 1? "

____ Yes but, I believe* the Mach-I models only employed the newer/6-pole type of alt.stator.
(* I don't know positively for-sure because I've never owned a Mach-I.)


Duke-Cheers,
-Bob

[JimF]

Yes, Mach 1s have two yellow wires.

Jim