Helicoil fix for elevation problem

[Mpapa]

Well, I installed a product called Perma-Coil to repair the stripped elevation collar.
The perma coils are made from stainless steel, which is probably only slightly better than the original aluminum treads. My friend milled the collar and installed the treaded insert. His work was very precise. Everything went well. I reinstalled the motor assembly, shims Etc. The motor assembly raised and lowered very nicely, but then I when to adjust the upper stop, I must have cranked it a little too far and the perma coil seems to have stripped. It’s now difficult to raise and lower. I can see shiny metal on the black steel shaft.
Does any know if there is a helecoil made of solid steel, the same as the elevation shaft?
Stainless may be fine if you are just going to sink a blot and tighten and not remove to many times, but the shaft will constantly be turning and I don’t think that his was a good idea using the S.S. ones
Has anyone tried replacing the motor housing, i bought a new one and am considering trying to install it as opposed to redoing the helecoil fix. It seems that it might be challangeing to remove the motor and arbor shafts.

Any comments would be appreciated

Thank You
Mike

[LCHIEN]

Well, I installed a product called Perma-Coil to repair the stripped elevation collar.
The perma coils are made from stainless steel, which is probably only slightly better than the original aluminum treads. My friend milled the collar and installed the treaded insert. His work was very precise. Everything went well. I reinstalled the motor assembly, shims Etc. The motor assembly raised and lowered very nicely, but then I when to adjust the upper stop, I must have cranked it a little too far and the perma coil seems to have stripped. It’s now difficult to raise and lower. I can see shiny metal on the black steel shaft.
Does any know if there is a helecoil made of solid steel, the same as the elevation shaft?
Stainless may be fine if you are just going to sink a blot and tighten and not remove to many times, but the shaft will constantly be turning and I don’t think that his was a good idea using the S.S. ones
Has anyone tried replacing the motor housing, i bought a new one and am considering trying to install it as opposed to redoing the helecoil fix. It seems that it might be challangeing to remove the motor and arbor shafts.

Any comments would be appreciated

Thank You
Mike

In order of strength and hardness, low to high, it would be
Aluminum, then steel, then stainless steel. SS should be better than steel.

[maxparot]

Not only is the stainless harder than the aluminum but because of an increase in the surface area that the coils holding in the new threads have a higher load capacity. To make sure the coil doesn't turn in the aluminum a small amount of locktite can be used on the aluminum threads the coil goes into and use release agent on bolts in the new threads until the locktite cures. Then remove the bolts and reassemble. The coils should be locked in and be able to hand higher loads than when new. You can also run a tap down the new threads to clean and smooth the new threads.