General Category > Bike Builds, Rebuilds And Restorations Only
1975 850T Survivor Project
cmice:
Cool link regarding master cylinder to wheel cylinder brake ratios...
https://www.vintagebrake.com/mastercylinder.htm
Dave Swanson:
Nice job saving the old girl. Without your influence the future of this bike was a best uncertain. Late to the party on this one, but per usual Charlie has provided his steady guidance. Good going, and glad you are enjoying the T!
Antietam Classic Cycle:
--- Quote from: cmice on May 10, 2026, 10:37:34 AM ---Cool link regarding master cylinder to wheel cylinder brake ratios...
https://www.vintagebrake.com/mastercylinder.htm
--- End quote ---
That's my "go to" chart as well.
cmice:
Several updates -
Went back to basics since the engine was assembled and heat-cycled a few times. Retorqued the heads, reset the valve clearances, re-gapped the points, and checked the timing. Much better now - no popping or spitting and nice steady idle (for a carb'ed, points bike).
Electronic voltage regulator works a treat. I am running a comically small lithium battery (36wh), but it was new and free and weighs all of 0.5lb (if that). May swap to a larger one later just so I can enable shorter hops and know I've got enough juice to make it home.
Brakes still on the to-do list, but for now the good weather has arrived and I want to get some time in the saddle! :) :)
Will still do a video at some point.
I put the end-caps back onto the Dunstalls to see if it quieted them down at all, and they don't - plus would have to downsize the mains to deal with the backpressure, so why bother. I wanted to pull the end-caps off while stopped on a ride, and found I have 2x 10-11 wrenches and 2x 17-19 wrenches, but no 13-14 wrenches in my original toolkit. Anyone have a 13-14 they want to swap for either a 10-11 or a 17-19?
cmice:
As promised…
https://youtu.be/6gbWs49YJO0
The ride back is more interesting than the ride there, but you get the idea.
Have a great Memorial Day.
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