Columbia motor rebuild problem
Posted: Fri Jul 06, 2018 4:50 pm
Hi everyone
I'm currently in the middle of my first rebuild which involves replacing the mainspring on a small tabletop Columbia. Projects been so far so good, new spring has been successfully wrestled into the barrel and packed with grease (using just a standard wheel bearing grease and some gear oil). I hit an unexpected road block however in that I can't seem to get the new spring to hold tension for more than a few seconds before it releases. Again it is a brand new spring, no fractures whatsoever, so my only hypothesis is that (see photo) the inner end of the spring is not getting a good enough hold on the main barrel shaft. It is the same pear-shaped hole and hook connection as on the other end of the spring.
Given the tight quarters making getting a good look at how it connects unfeasible, what should I do? Do I have to pull the spring out again and then make that connection before I wind it into the barrel?
Thanks
Colin
I'm currently in the middle of my first rebuild which involves replacing the mainspring on a small tabletop Columbia. Projects been so far so good, new spring has been successfully wrestled into the barrel and packed with grease (using just a standard wheel bearing grease and some gear oil). I hit an unexpected road block however in that I can't seem to get the new spring to hold tension for more than a few seconds before it releases. Again it is a brand new spring, no fractures whatsoever, so my only hypothesis is that (see photo) the inner end of the spring is not getting a good enough hold on the main barrel shaft. It is the same pear-shaped hole and hook connection as on the other end of the spring.
Given the tight quarters making getting a good look at how it connects unfeasible, what should I do? Do I have to pull the spring out again and then make that connection before I wind it into the barrel?
Thanks
Colin