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Teds new project a CB500 K1 mostly version 0.5 circa 1972.
Bryanj:
The front, static, blade goes INSIDE the chain with the rib facing forwards.
If you dont you wont get the cam sprocket on.
I find it easier to fit the tensioner mechanism with the barrells not all the way down to make sure the bottom goes into the pocket its supposed to
Oddjob:
Second that. Leave the barrels about 1" from the crankcase, fit the tensioner bolt through the barrels, don't fit the nut. As you drop the barrels watch to ensure the tensioner goes into the slot in the lower crankcase. When it does, fit the oring, the washer and the nut. Push in the tensioner blade all the way and then lock the nut off. Don't release it until the cams in place and setup correctly.
Same for the front guide, fit when the barrels are standing slightly proud of the cases. It has an arrow which faces up, also says UP IIRC and as Bryan points out it goes behind then chain so that the chain goes between the guide and the front of the barrels.
McCabe-Thiele (Ted):
Thanks for the pointers both of you:-
So the cam chain adjuster screw is on the rear of the engine, the fixed blade being fitted so the chain is between it & the front of the block.
For the fixed blade I can see it has the word UP on it with a two pairs of arms - I can see the side arms that sit in the engine casing recess at the bottom - so it sort of hangs from the slots in the top of the block until it fully engaged at the bottom - sounds fun.
McCabe-Thiele (Ted):
Block fitted today:-
Lower block gasket & O rings & restrictors in place - the four larger block seals fitted to cylinder block - part lowered block to fit cam chain through tunnel.
Block fitted onto studs lowered down to a small wooden support block on rear edge of chain tunnel - pistons fed into bores 2 & 3 then 1 & 4 with cam chain through tunnel - cam tensioner & guide fitted into place - adjuster locked back once block fully lower into place.
All feels good - plenty of exercise walking round the bike ramp whilst feeding piston rings into block.
Johnny4428:
Making good progress Ted! Looking forward to some pics.
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