Ashtabula fork fender mount screw - what size and pitch?


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buses n bikes

Finally riding a big boys bike
Oct 24, 2018
302
274
33
Ames, Iowa
#1
Hi all, I tried searching to no avail so thought I'd ask. I need to punch, drill and tap this fork to remount my front fender. What size and thread pitch is the screw that affixes the fender to the fork here at the crown? Thank you!

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KevinBrick

Finally riding a big boys bike
Jun 11, 2014
294
210
59
Wausau, WI
#5
I’ve done a few with really good results.. The hard part is turning the tap in between the forks.. I made this with a 12” drill bit extension.. Works great..
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Likes: buses n bikes

KevinBrick

Finally riding a big boys bike
Jun 11, 2014
294
210
59
Wausau, WI
#7
The area where the bolt goes in is a little concaved so once you drill out the old screw before you use your tap, use like a 1/2” bit and lightly clean out that area.. Don’t go into the fork at all.. Just clean out the old screw that’s still sticking up if there is any..
 
Likes: buses n bikes

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