Guess I was trying to save you buying a longer track than necessary. My cheap! Also you would be filling 2 sets of holes with epoxy with your method, vs 1 for mine. I would recommend filling and redrilling in epoxy any new holes you make. Better chance of protecting the core plywood. 7 holes in the old track. 7 chances of moisture ingress. Bill On Thu, Feb 25, 2010 at 2:01 PM, Tom Jenkins <tjenk@gte.net> wrote:
Bill, Your method of coping with new holes slightly offset from old ones sounds ideal, but I still can't see why it would not work to trim the excess from one end of the track and re-center it so the new holes would fall a safe distance from the old ones. Wish I had a chandlery nearby so I could look at the gear in person. As for the backing plates, I gather that the force is greater than I would have guessed, so I will us them. Thanks for your suggestions. Tom Jenkins M17 Scintilla
On Feb 25, 2010, at 10:11 AM, Bill Wickett wrote:
Tom,
Sounds like you will have plug the old holes, presumably with epoxy, then drill the new holes. At that point you will have to consider how to seal the core at the new holes. Why not not just over size the existing holes, fill with epoxy and then redrill to mount the new track? I believe you said the holes were about offset by 1/16" difference. Not sure what the cumulative "creep" would be over the length of the track, you may have to drill out a 3/4" hole to pot up with epoxy. Only drill to the bottom skin, then there will just be the existing hole going through (1/4"?). Tape the bottom, fill with resin and then drill your new holes in the epoxy. Use a good backing plate below. A piece of flat 1/8" x 3 or 4"aluminum stock, or plywood. (check your bolt length when looking at the ply thickness)
Take pictures!!
Bill
On Thu, Feb 25, 2010 at 12:32 PM, Tom Jenkins <tjenk@gte.net> wrote:
Thanks to all of you with comments about car and track setups. As always
you came up with several good approaches to the same end, and I will have to decide which is best. Since my track placement does not seem too bad, I might consider buying a slightly longer section of track than necessary, and cutting it so the new holes fall between the old ones, which can be plugged with epoxy.
Tom Jenkins M17 Scintilla
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