I too am impressed that the pawls have worn out. I havent seen it mentioned yet, what is the original material of the pawl?
For 3d printing, Shapeways.com can print in a variety of materials with good resolution and decent timeline. For lasercutting, Sendcutsend.com is a good economical option if they have a stock that matches the thickenss of the pawl. Resolution with laser cutters is pretty good but oversizing the mating surface and filing to fit would probably give the best result with the least amount of fiddling. Might have to work around a minimum size requirement but you could gang a few together with bridges. They have all sorts of materials in different thicknesses. A jewelers saw, flat stock, and some paitence would do the same but theres a little more skill involved. If you need any help drawing it up for cutting shoot me a PM. Happy to help get these shifters back on the road! Christian Phoenix, AZ On Thursday, September 21, 2023 at 12:28:16 PM UTC-7 Bicycle Belle Ding Ding! wrote: > Wes, Pam’s bike is a model of beausage. There is no Betty Foy used > harder…maybe Caroline Gollum can give Pam a run for her money, but that’s > about it. (Caroline wrote in a recent thread that her well-loved Betty had > a stem seized and then later they discovered the skewer to the wheel was > seized, too.) Pam just crossed over 74,000 miles on her Betty. Not bad for > a bike purchased in 2011! > > Here is the 10 year anniversary post Pam did about her Betty. I’m sure > that little bike is far more marked up now than it was in those photos. > > https://cltspokespeople.org/my-betty-foy-after-10-years/ > Leah > On Thursday, September 21, 2023 at 11:12:44 AM UTC-4 Wesley wrote: > >> I am frankly amazed at the workout Pam is giving her bike, to wear out >> multiple shifter pawls! I can imagine a few ways to do a repair, none of >> which are "worth it", in terms of resource and money cost (3D printing, >> filing down a bit of aluminum bar, CNC milling). The most expedient fix, >> IMO, would be to epoxy the ratchet gear to the shifter body so that the >> both directions work in friction mode. >> -Wes >> >> On Tuesday, September 19, 2023 at 8:02:06 PM UTC-7 eric...@gmail.com >> wrote: >> >>> Hi all — I'm looking for some neglected, cast off or broken Silver 1 >>> shifters to scavenge so that I can repair some broken Silver 1 shifters >>> sent to me by forum member Pam Murray. If you have some you aren't using or >>> that you think are broken which you are willing to send me for the cost of >>> shipping please let me know. I will use them to repair Pam's shifters and >>> get them back to her! >>> >>> I recently read enjoyed Pam's thread on broken Silver shifters >>> <https://groups.google.com/g/rbw-owners-bunch/c/HIqS567cjio/m/XvTLS759AQAJ>. >>> >>> And right on time one of my Silvers broke. So I took mine apart to have a >>> look. It turns out the spring was clogged with corrosion and wouldn't >>> compress, allowing for the pawl to hold the ratchet wheel and hold tension >>> on the shifter cable. Luckily the spring and pawl only needed to be cleaned >>> and reassembled. >>> >>> Pam sent me three broken Silver shifters. As many of us know, Pam has >>> put tens of thousands of miles on her legendary Betty Foy. She's worn out >>> many parts and she's interested in getting them back into service when >>> possible. I took a look and was able to fix one of the shifters. The other >>> two require new pawls, which I can't locate. >>> >>> [image: Screenshot 2023-09-19 at 10.59.05 PM.png] >>> >>> I reached out to Dia Compe in Taiwan about spare parts. They replied >>> quickly but said they could not send me any bits and pieces and suggested I >>> contact Rivendell. >>> >>> So I wrote to Will Keating at Rivendell, who's a wonderfully helpful and >>> nice guy and a friend and he said he'd send me some parts. Well, they >>> arrived today and they're *brand new* Silver 2 levers. I really don't >>> want to destroy brand new shifters to revive old shifters! I'm sure the >>> pawls I need are inside but I can't bring myself to tear them apart. >>> They've very definitely never been installed on a bike. >>> >>> I have found some replacement springs from McMaster-Carr >>> <https://www.mcmaster.com/9657K257/>. They're heavier gauge wire and >>> slightly longer than the stock springs from Dia Compe. But they fit and >>> they work. They do result in a lever with heavier action but they do not >>> make the lever difficult to operate. >>> >>> My plan, once I locate some pawls, is to make a Silver shifter repair >>> and maintenance video. I hope that with donated parts from other members I >>> can fix Pam's shifters, show the process of disassembly, repair and >>> re-assembly and share it with the group (and the rest of the web). I'll >>> include a detailed look of the proper order for all the bits and how the >>> get the shifter closed back up. >>> >>> Thanks in advance! >>> >> -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/1d44f990-4b62-4c76-a5c5-84bbf2fc8f42n%40googlegroups.com.
