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Colt Actuator Prototype Help


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#1 benedw60

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Posted 25 January 2019 - 07:53 PM

I recently got an aftermarket colt actuator from gunbroker. I reversed engineered the actuator and ordered a steel prototype to be made ( delivery 2/10). Anyway I do not have a colt Thompson to validate my prototype and I was wondering if there would be someone on the board that I could send it to for a fit and function test before I do a production run of them. ( You can keep the sample) Please PM me if you are interested.

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#2 benedw60

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Posted 25 January 2019 - 09:36 PM

Help found
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#3 TD.

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Posted 25 January 2019 - 11:11 PM

Can you post a picture of your aftermarket Colt actuator from the front and/or rear? The actuator in the picture you posted does not look like a Colt era actuator to me. 

 

Thanks!


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#4 benedw60

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Posted 26 January 2019 - 06:43 AM

TD, you are correct the actuator is a front of a 1928 milled down to fit a 1921. I wish I had a 1921 actuator to base my design off of but those are very hard and expensive to come by.
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#5 PK.

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Posted 26 January 2019 - 10:10 AM

The actuator blueprints are available; why not use them instead of reverse engineering (which is always second best)?  If you are going to invest in production you need to insure that your parts are to genuine dimensions & tolerances.


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#6 benedw60

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Posted 09 February 2019 - 08:08 PM

Got my prototype in, shipping it out Monday for testing

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#7 ron_brock

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Posted 09 February 2019 - 09:35 PM

Is it 3d printed or cast? You may look at increasing a few radii to help lower stresses. For example where the top of the actuator meets the blish lock area that looks to be a pretty sharp 90deg.

Ron
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#8 benedw60

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Posted 10 February 2019 - 10:12 AM

The prototype is 3D printed steel and its only for fit and function test and probably wont have a long life. The ones that will be sold will be made out of 4140 steel
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