Repair/Restore Logan 820 lathe

Here are the specs on the 32/16 SB gears on Ebay. Does anyone know, by the specs below, if these gears could be modified to work? Perhaps bored and thickness reduced? Thanks

Large Gear is 32T, 2.121" Dia. X. 373" thick, small gear is 16T, 1.115" Dia. X. 395" thick (both gears are 16DP) The bore (bushed) is 7/16", the overall thickness of the gear set is. 768". You are purchasing ONE DOUBLE GEAR.

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I’ve gotten measurements from my old gear and the one on Ebay.
Measure Existing Gear. New Gear. Difference
32T thickness. .250. .373. .123
32T OD. 2.120 2.121. .001
16T thickness. .270. .395. .125
16T OD. 1.108. 1.115. ..007
Total thickness. .530. .768. .238
Bore. .562. .440. .122

The new gears are 16DP
I’m thinking that the gears can be faced to the right thickness and bored to the proper size. Do you think that these could be made to work?
Thanks for any info.
 
Here are a couple of Tubalcain vids on repairing a Logan gearbox. In one of them, he describes specifying gears.


 
Thanks for the information. I’ve looked at both videos but I guess I’m not smart enough to understand everything I need to know. I tried using the formula in the video and am getting weird numbers.
I noticed that my list of measurements posted above ran together after I posted it so I’ll try to re-do it by adding some dashes to keep everything separated.

List of gear measurements
Item——————Existing Gear—————New Gear—————Difference
Thickness———32T, .250———————32T, .373—————-.123
O.D. 32T———2.120—————————2.121———————.001
Thickness———16T, .270——————-1.115———————-.125
O.D. 16T———-1.108————————-1.115———————..007
Total Thickness.-.530————————-.768————————.238

It says the DP for the new gear is 16

I’m not sure of the existing DP. I can’t make it work out for sure.
Can the thickness and bore be machined to make the new gears work? It would br great if I could make them work. The new gears are pictured.
If anyone knows if I can make these work please let me know.
Thanks
Ken

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Vincent (and anyone else)

I can't help any with your gear questions but I can explain why your first table had all of the numbers moved. The word processor software behind the scenes is apparently programmed to delete what it considers as excess spaces. I think that following a period, it allows two spaces but in all other cases it only allows one space. So you did the right thing by using a printing character to substitute for the spaces.
 
According to the Logan Catalog I have, the LA-24-1 Gear Box used 16 DP gears. Personally I think you could make that gear work.

(The later LA-1240 used 20 DP gears in the gearbox)

From the Logan Actuator Parts Catalog:

Logan_LA24a.png
 
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