sandmangts
Senior Retro Guru
After a long search I finally found a frame similar to my Mercury although it is an Elgin. The geometry and measurements are the same and it has the same flowing lines. The only difference is the rear dropouts which are dropstand dropouts.
As you can see it is just like my Mercury:
I went ahead and cold set the 110mm spacing to 135, I find that using a 2x4 sucks because they flex so much but this steel counter weight is perfect.
Re-aligning the dropouts was pretty easy using a milling vise. I got lucky and got the alignment perfect on the first try. The key is to be gentle and do it in small increments measuring often.
Trimming and tapping the dropouts for a derailler was not as hard as I expected:
Tapping:
Testing:
Trimming:
Final shape:
As you can see it is just like my Mercury:
I went ahead and cold set the 110mm spacing to 135, I find that using a 2x4 sucks because they flex so much but this steel counter weight is perfect.
Re-aligning the dropouts was pretty easy using a milling vise. I got lucky and got the alignment perfect on the first try. The key is to be gentle and do it in small increments measuring often.
Trimming and tapping the dropouts for a derailler was not as hard as I expected:
Tapping:
Testing:
Trimming:
Final shape:
