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| 3 Synchro Gearbox https://www.ausmini.com/forums/viewtopic.php?f=2&t=102225 |
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| Author: | slide [ Thu Feb 22, 2024 9:50 am ] |
| Post subject: | 3 Synchro Gearbox |
The 3 synchro gearbox mainshaft/third motion shaft has a 14 mm nose that runs on a needle roller bearing in the first motion shaft. These have a habit of wearing through the case hardening after a time and new replacement mainshafts 22G392 are no longer available (although the 14mm 4 speed synchro box mainshafts are). I seem to recall that at one time in the early ‘70s we used to get a 3 synchro shaft with a worn nose hard chromed which enabled them to be re-used but I haven’t heard of anyone who has done this nowadays. I note that Hardchrome Services P/L in Adelaide is still operating having been established in 1972, and I’m pretty sure that is where we used to get them done. Has anyone heard of this or had recent any experience with this process and whether it is a viable option. |
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| Author: | drmini in aust [ Thu Feb 22, 2024 12:33 pm ] |
| Post subject: | Re: 3 Synchro Gearbox |
Can't run needle rollers on a hardchromed shaft, they'll peel the chrome off. I used to fit a 14mm bearing sleeve after grinding the shaft down. I don't do these now but I think minisport SA does exchange. Edit 4 synchro shafts, ask them about 3 synchro. If answer is no PM me. |
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| Author: | cooperess [ Fri Feb 23, 2024 9:53 am ] |
| Post subject: | Re: 3 Synchro Gearbox |
Attachment: 22G392.jpg slide PM sent
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| Author: | cooperess [ Sat Mar 16, 2024 9:30 am ] |
| Post subject: | Re: 3 Synchro Gearbox |
I have just been able to aquire these genuine new BMC parts if they are required, please PM me. 22G149 Attachment: Mini 22G149 Needle Rollers DSCF2353.JPG 88G396 Attachment: Mini 88G396 Layshaft Needle Roller Bearing DSCF2354.JPG 22A980 Attachment: Mini 22A980 2nd Gear 3 Synchro DSCF2352.JPG 22G392 Attachment: Mini 22G392 3RD Motion Shaft 3 Synchro DSCF2351.JPG
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