lens coller repair
Dec 2, 2013 18:53:11 #
The 1/4 20 hole on my aluminum lens collar is worn down to its last thread. Is there a way to repair it? has anyone tried heli-coils?
Dec 2, 2013 18:56:38 #
oldtigger wrote:
The 1/4 20 hole on my aluminum lens collar is worn down to its last thread. Is there a way to repair it? has anyone tried heli-coils?
If it works for a cylinder head, it should work for a lens collar. Can you remove the collar and buy a new one - as a last resort?
Dec 2, 2013 19:02:29 #
jerryc41 wrote:
If it works for a cylinder head, it should work for a lens collar. Can you remove the collar and buy a new one - as a last resort?
its an old 2.8 300mm tamron, replacement part probably not available but it is easily removed if you have a reccomendation for repair. not enough room to simply drill/tap another hole
Dec 2, 2013 19:22:13 #
oldtigger wrote:
The 1/4 20 hole on my aluminum lens collar is worn down to its last thread. Is there a way to repair it? has anyone tried heli-coils?
You might take the Lens Collar to a machine shop and ask someone if they can drill out the hole, and either tap in or press in a 1/4x20 collar that they might make for you, threaded or press fit. This could be expensive, depending on the machinist, who might also be willing to offer an opinion re the heli-coil. :thumbup:
Dec 2, 2013 22:43:16 #
oldtigger wrote:
its an old 2.8 300mm tamron, replacement part probably not available but it is easily removed if you have a reccomendation for repair. not enough room to simply drill/tap another hole
Could a 1/4 x 20 nut be attached to it?
Dec 2, 2013 23:24:53 #
not enough clearance jerryc41 for a nut. there is a 3/8" threaded hole in the collar if they make a reducer to 1/4 20. ever heard of such an animal?
Dec 3, 2013 00:43:55 #
Drill it out and use a bottoming tap to take it to a 3/8"x16 hole and insert a standard 1/4x20 to 3/8x16 adapter that comes with almost all tripod heads, big advantage to it being made of steel also. Use Blue threadlocker to make sure it stays in place once seated.
Dec 3, 2013 02:35:31 #
Dec 3, 2013 06:57:57 #
MT Shooter wrote:
Drill it out and use a bottoming tap to take it to a 3/8"x16 hole and insert a standard 1/4x20 to 3/8x16 adapter that comes with almost all tripod heads, big advantage to it being made of steel also. Use Blue threadlocker to make sure it stays in place once seated.
I thought of that 3/8" adapter, but how would that work with the 1/4" bolt on the tripod?
Dec 3, 2013 07:40:57 #
jerryc41 wrote:
I thought of that 3/8" adapter, but how would that work with the 1/4" bolt on the tripod?
exactly what i need, can such a thing be acquired without purchasing the whole pod?
Dec 3, 2013 07:44:08 #
oldtigger wrote:
exactly what i need, can such a thing be acquired without purchasing the whole pod?
http://www.amazon.com/s/?ie=UTF8&keywords=3%2F8+to+1%2F4+tripod+adapter&tag=googhydr-20&index=aps&hvadid=18207507684&hvpos=1t1&hvexid=&hvnetw=g&hvrand=1005533407673041108&hvpone=&hvptwo=&hvqmt=b&hvdev=c&ref=pd_sl_247uvhw6z6_b
Dec 3, 2013 08:08:36 #
Dec 3, 2013 12:12:12 #
oldtigger wrote:
The 1/4 20 hole on my aluminum lens collar is worn down to its last thread. Is there a way to repair it? has anyone tried heli-coils?
Which collar do you have!!
Dec 3, 2013 14:02:38 #
RichardSM wrote:
Which collar do you have!!
Jerry41c came through with a fix which will be stronger and more wear resistant than the original. Thanks to everyone who responded.
Dec 3, 2013 14:24:44 #
oldtigger wrote:
Jerry41c came through with a fix which will be stronger and more wear resistant than the original. Thanks to everyone who responded.
Jerry did????
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