Checking the other full scale frame drawing for the chain stays. I can measure the chain stay angle (8.5*).
Because the are Columbus Spirit chain stays they are flared and ovalised i can’t use a tube mitre program so the tube notcher is out again.
When both are are done it time to fit up on the jig to check they are the same length.
It’s best to do one side at a time with a couple of small tacks to see if it’s square.
On the plan its square in the plan view but not on its side. Dam. that’s why you tack and check. So brake those tacks and adjust the jig by 4 mm and do it all again.
The quickest way to get the other chain stay on is to use a dummy axle set to 132 (+2 mm of the final axle width as the bridge will pull it together). tacked and time to check with a real wheel.
Bang on sorted. Seat stays next.
Levy Bike Works 
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