Author Topic: Gearbox Oil  (Read 494 times)

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johnjag

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Gearbox Oil
« on: 16 August, 2020, 11:21:26 »
Hi all - I have just purchased a genuine BSA Instruction Manual for the 1966 range of A50/65's. (My bike a '66 Spitfire) The oil section says 50 weight oil in the gearbox and yet the Haynes Manual quotes EP90. Having searched the web no one seems clear about this and yet I am more likely to believe a manual produced by BSA than the Haynes one. Any thoughts please?
Regards
John.

idie

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Re: Gearbox Oil
« Reply #1 on: 16 August, 2020, 11:34:20 »
EP 90 and 50 weight engine oil are both the same weight.

johnjag

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Re: Gearbox Oil
« Reply #2 on: 16 August, 2020, 15:06:44 »
Thanks Idie - that confirms my thoughts.

A10 JWO

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Re: Gearbox Oil
« Reply #3 on: 16 August, 2020, 16:56:22 »
Been using 80-90 for years, no issues.

RogB

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Re: Gearbox Oil
« Reply #4 on: 17 August, 2020, 13:53:42 »
BSA Golden Flash, Plymouth, UK

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Re: Gearbox Oil
« Reply #5 on: 17 August, 2020, 17:18:12 »
That's a worthwhile tip.
Many years ago on a trip to France my mate Brian's A10 sleeve bush (main drive shaft to clutch inner) seized solid. Plenty of fresh oil in the gearbox. I wonder if it was 'standard' EP90? 
Anyway, we stripped, sorted and rebuilt the gearbox on the campsite. Read all about it in a forthcoming edition of The Star.
Chris
« Last Edit: 01 September, 2020, 21:55:42 by LEO »

johnjag

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Re: Gearbox Oil
« Reply #6 on: 18 August, 2020, 18:56:49 »
Thanks all for your input.

John.