garock
fully equipped rock polisher
Member since February 2006
Posts: 1,168
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Post by garock on Jan 6, 2019 11:23:01 GMT -5
I am looking for the small drive gear that goes on the motor shaft of a GMT - 3, 2371, Star Diamond Tumbler. Not sure what the 2371 number is for. Have done searching and so far nothing. Can parts be even found anymore ? Trying to get started back into tumbling and have this antique tumbler. The drive gear with cooling blades, made of plastic and most likely dried out. If anyone has a parts manual or any info on where I may get parts, I would greatly appreciate it. Being just 29 years ole like my Mam'ma Adelle Johnson is catching up with me. I may just have to do some major "ciphering" to rig it so it works. The unit was given to me about 15 years ago and the motor runs. Started up this morning and a grinding noise started. Saw that the drive gear on the motor with fan was destroyed. Any help would be greatly appreciated !
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garock
fully equipped rock polisher
Member since February 2006
Posts: 1,168
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Post by garock on Jan 6, 2019 17:27:39 GMT -5
I have realized that thru "much" searching, parts can not be got anymore. Will have to "cipher" now what to do. Might just save the motor and chunk the rest of the parts..... !
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AzRockGeek
has rocks in the head
Member since September 2016
Posts: 703
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Post by AzRockGeek on Jan 6, 2019 18:54:35 GMT -5
Check with Tony catmandewe, I am pretty sure I sold him two new NOS motor and gear assembly for the stardiamond tumbler last year. He may still have them. tim |
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minerken
Cave Dweller 
Member since August 2013
Posts: 466 
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Post by minerken on Jan 6, 2019 20:27:57 GMT -5
I seriously doubt that the gear is or was made specifically for Star Diamond. If you go to McMaster Carr for instance you can get just about any size made you just have to supply the correct dimensions. They show you what and where to take the measurements.
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salpal48
starting to spend too much on rocks
Member since March 2015
Posts: 136
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Post by salpal48 on Jan 11, 2019 22:01:17 GMT -5
The plastic drive gear you are searching Might Be on" Shapeways 3D printing "
. i purchases the drive gear for a Sears Tumbler but had to alter it somewhat to fit
They sell them in several colors
Sal
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bearmom
off to a rocking start
Member since July 2019
Posts: 1
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Post by bearmom on Jul 9, 2019 22:11:00 GMT -5
I am looking for the small drive gear that goes on the motor shaft of a GMT - 3, 2371, Star Diamond Tumbler. Not sure what the 2371 number is for. Have done searching and so far nothing. Can parts be even found anymore ? Trying to get started back into tumbling and have this antique tumbler. The drive gear with cooling blades, made of plastic and most likely dried out. If anyone has a parts manual or any info on where I may get parts, I would greatly appreciate it. Being just 29 years ole like my Mam'ma Adelle Johnson is catching up with me. I may just have to do some major "ciphering" to rig it so it works. The unit was given to me about 15 years ago and the motor runs. Started up this morning and a grinding noise started. Saw that the drive gear on the motor with fan was destroyed. Any help would be greatly appreciated ! I have a Star Diamond tumbler that turn two containers at a time, that I'm looking for one of the bars for, but it's otherwise all there. I'd consider selling for parts. |
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lapidary1234
spending too much on rocks
"If you like rocks you can't be all bad!!" ~ old timer quote
Member since October 2021
Posts: 293
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Post by lapidary1234 on Nov 6, 2023 18:42:37 GMT -5
I am in the process of sourcing a drive gear for one of these star diamond double barrel tumblers. I have a knowledgeable guy helping me. Commenting here to save this thread. Will comment back once I get the proper gear!!
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lapidary1234
spending too much on rocks
"If you like rocks you can't be all bad!!" ~ old timer quote
Member since October 2021
Posts: 293
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Post by lapidary1234 on Nov 9, 2023 19:02:36 GMT -5
I found the proper gear that goes on the motor output shaft (smaller gear).
Specs are:
24 diametric pitch
12 tooth
3/16" bore
Hopefully this helps someone down the line.
The larger gear (going off memory) is 3.5" diameter
85 tooth
Cheers!
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lapidary1234
spending too much on rocks
"If you like rocks you can't be all bad!!" ~ old timer quote
Member since October 2021
Posts: 293
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Post by lapidary1234 on Nov 9, 2023 19:04:37 GMT -5
Correction, the larger gear that goes on drive roller is 3.5" diameter 84 tooth (not 85 tooth)
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,359
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Post by quartz on Nov 9, 2023 22:13:39 GMT -5
24 pitch, 12 tooth, 3/16 bore gear is available through Boston Gear dealers.
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