In other posts, it was recommended to replace the control systems in ARFs with non-metal ones. I have a Nobler ARF and a Flite Streak ARF, both from Top Flite. They each need some repair, so I'm planning to improve their controls.
I was wondering which control system or bellcrank would be suitable. Brodak sells a variety of bellcranks that are not metal. I suppose that it should be 3" or 4", but there many to choose from. For 4", for example, there is PSP (BB374), nylon (BB389), Nylon (BB396), strong arm 1/8" thick (BB391), strong arm 3/16" thick (BB392), heavy duty (BH396) and Sig (SH-480).
Also, on other websites, there are control systems including the bellcrank assembled with leadouts, but they are about $50.
So, which would be suitable for the ARF Nobler and Flite Streak? Thanks.