After the restoration: Cam Woes [page 4]

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Saturday, Mar 8 2014 [25,724 miles]

Timing gear replacement
timing gears, good left, bad right

timing gears, good left, bad right

timing gears, good left, bad right
Angle and size match

Angle and size match

Angle and size match

As noted earlier, my timing gear looked pitted and otherwise in terrible condition. I pulled it off the bike earlier this week and took it and the cam gear into Joe’s. He agreed that the timing gear shouldn’t go back on the bike. The cam gear, on the other hand, is serviceable.

We went through his stash of timing gears, looking for one of the same vintage (same gear angle — it changed at some point) that fit the cam gear with the same rough measurement. We held the original two gears together and measured from the inside of one gear to to the inside of the other. Then we measured the various candidate timing gears looking for the same measurement. Two of the half of a dozen gears we tried matched angle and measurement. I grabbed one of them.

The final test will be to check for backlash or binding once both gears are back on the bike. It should at least be close.

Sunday, Mar 16 2014 [25,724 miles]

Brent was in town for Joe’s 94th birthday party and brought the new and refurbished top end parts for my R69S. I think I have everything needed to put the bike back together. Today I took pictures of what I received. I’ll let the pictures speak for themselves.

Top end parts
Top end parts

Top end parts

Top end parts
Third oversize pistons

Third oversize pistons

Third oversize pistons
Cam

Cam

Cam
Freshly bored cylinder

Freshly bored cylinder

Freshly bored cylinder
Fresh paint, new tappets

Fresh paint, new tappets

Fresh paint, new tappets
Left head with new valves, springs

Left head with new valves, springs

Left head with new valves, springs
Combustion chamber

Combustion chamber

Combustion chamber
Right head in B&W

Right head in B&W

Right head in B&W
Right head with new valves, springs

Right head with new valves, springs

Right head with new valves, springs

 

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