|Brian Dorricott 1||15/08/2020 09:52:14|
|118 forum posts|
Does anyone know the M2 clevis(s) available from model shops pitch I.e. are they M2x0.4 or M2x0.45 it never states on the packet . I want to replace some nylon rubbish that came with an old ARTF Funfly and the pushrods are longer than the normal 300mm size.
Thanks in anticipation
|Denis Watkins||15/08/2020 10:18:19|
|4631 forum posts|
My wire gauge says your M2 are 0.4 Brian
But the way that some are spun up at high speed, I can see your dilemma
Some stated M2 rods are in fact 2.2mm and these are threaded 0.45
Edited By Denis Watkins on 15/08/2020 10:29:17
1389 forum posts
Useful info on threads, pitch, taping drill etc from Modelfixings Thread Data
|6643 forum posts|
The threads on things like rc control rods, spokes etc are often ( always?) rolled threads - that is the rod itself is undersize and the thread is not cut into but rolled = spread outwards. Therefore just measuring the rod material diameter suggests it's undersize. Means you cannot cut a satisfactory thread with a die.
If the thread is uncertain ( it could be a US thread) then replacing the old clevis with a SLEC nylon clevis with split pin might be the answer.
Edited By kc on 15/08/2020 11:20:38
|Engine Doctor||15/08/2020 13:34:51|
2584 forum posts
Also add that when you have sorted and adjusted the clevis run some cyano into the thread to stop it chattering . The threads are so poorly made that many over the years have eventually slipped after chattering back and forth Cyano prevents it and can easily be un-done with some heat .
Please login to post a reply.
Want the latest issue of RCM&E? Use our magazine locator link to find your nearest stockist!