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[Resource] - Clutch actuator gear, source coil sheaves
- 19stuberd
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[Resource] - Clutch actuator gear, source coil sheaves was created by 19stuberd
Hey everyone! I just remembered I had a couple of files floating around that I went to some trouble to create, and I thought I would put them out there for anyone who might need them at some point.
First one is a clutch actuator worm gear. One issue that I had before my ignition issue was that my clutch actuator gear broke, which was a bit of a pain in the ass as the only replacement was $75. I drafted the gear and iterated it a couple of times for 3D printing, so I will include the source file (autocad) as well as the STLs that I printed from. The one on the bike is just made of nylon, so if you have access to a nylon-capable 3D printer this will save you $75. The outer dimensions of the gear and thread pitch don't change between iterations, but the shaft hole diameter is the only source of issue as the original (somewhat stupidly) seems to rely on a friction fit for retention. It's just a matter of finding which file creates the right interference fit when printed on your printer, you can also print the hole small and sand it out to make it a bit looser (I did that).
The other file is something that I used when I was rewinding my source coil, should anyone ever have to do that again. It's just a model of a part to replace the paper coil stops that always seem to break. Dims and thickness are all ripped straight from the paper one, it fits perfectly. I have noticed some minor sagging after using it on the bike (it gets warm and I printed with a relatively low temperature thermoplastic) but after dozens of miles of riding it is still going strong.
Hope this can help somebody! Thanks for reading
First one is a clutch actuator worm gear. One issue that I had before my ignition issue was that my clutch actuator gear broke, which was a bit of a pain in the ass as the only replacement was $75. I drafted the gear and iterated it a couple of times for 3D printing, so I will include the source file (autocad) as well as the STLs that I printed from. The one on the bike is just made of nylon, so if you have access to a nylon-capable 3D printer this will save you $75. The outer dimensions of the gear and thread pitch don't change between iterations, but the shaft hole diameter is the only source of issue as the original (somewhat stupidly) seems to rely on a friction fit for retention. It's just a matter of finding which file creates the right interference fit when printed on your printer, you can also print the hole small and sand it out to make it a bit looser (I did that).
The other file is something that I used when I was rewinding my source coil, should anyone ever have to do that again. It's just a model of a part to replace the paper coil stops that always seem to break. Dims and thickness are all ripped straight from the paper one, it fits perfectly. I have noticed some minor sagging after using it on the bike (it gets warm and I printed with a relatively low temperature thermoplastic) but after dozens of miles of riding it is still going strong.
Hope this can help somebody! Thanks for reading

The following user(s) Liked this Post: RTD2
17 Apr 2023 15:03
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- MarkT
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Replied by MarkT on topic [Resource] - Clutch actuator gear, source coil sheaves
Thank you, I'm continually amazed at the skills members here have!
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
17 Apr 2023 15:23
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