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 Gearbox oil dilema

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spannermonkey2




Number of posts : 2
Registration date : 2009-11-15

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PostSubject: Gearbox oil dilema   Gearbox oil dilema Icon_minitimeMon Nov 16, 2009 4:38 am

Can anyone recommend a good Gear box oil for my aircooled racing D3 bantam engine. and at what interval should it be changed.
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ROBBIE

ROBBIE


Number of posts : 377
Localisation : Swanscombe Kent UK
Registration date : 2006-12-25

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PostSubject: Re: Gearbox oil dilema   Gearbox oil dilema Icon_minitimeMon Nov 16, 2009 5:54 am

EP80 CHANGE AFTER EACH MEETING
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Guest
Guest




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PostSubject: Re: Gearbox oil dilema   Gearbox oil dilema Icon_minitimeMon Nov 16, 2009 6:02 am

I run the cheapest unbranded 20w50 I can buy, or borrow, and change it every meeting

The only time I put good stuff in I couldn't get rid of the clutch slip cheers

James
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mjpowell

mjpowell


Number of posts : 1074
Localisation : Lincoln England
Registration date : 2006-12-09

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PostSubject: Re: Gearbox oil dilema   Gearbox oil dilema Icon_minitimeMon Nov 16, 2009 6:20 am

Engine oil gives better gear selection but wears gearbox. EP80 better on gears but poor gear selection and clutch probs if running all steel plates! Don't put 3/4 of a pint in either put 1/2pt.
Where do you race your 150cc banty??
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SteveF

SteveF


Number of posts : 54
Age : 64
Localisation : Warrington Cheshire
Registration date : 2006-12-04

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PostSubject: Re: Gearbox oil dilema   Gearbox oil dilema Icon_minitimeWed Nov 18, 2009 5:01 am

Hi Mike

What is the basis for 1/2 pint. Is it because at 1/2 you can remove the "Egg" from an horizontal engine and not spill oil. Or is there another benefit

Steve
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mjpowell

mjpowell


Number of posts : 1074
Localisation : Lincoln England
Registration date : 2006-12-09

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PostSubject: Re: Gearbox oil dilema   Gearbox oil dilema Icon_minitimeWed Nov 18, 2009 10:18 am

Hi Steve .. reason is the oil level is just too high at 3/4 pt and its churning up saping power and generally throwing it out! I think BSA said 3/4pt as it lenghtened the service(top up interval) and as we are changing every 40miles(a race meeting) its not required. My bike(s) have run 1/2pt (10 fl/ozs) since 1984 with no ill effects....
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mike redhead

mike redhead


Number of posts : 90
Age : 64
Localisation : Merseyside
Registration date : 2008-06-02

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PostSubject: Re: Gearbox oil dilema   Gearbox oil dilema Icon_minitimeThu Nov 19, 2009 3:39 am

Mike,

Is that 1/2 pint combined in the clutch and gearbox or just in the gearbox?

Regards,

Mike R
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Guest
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PostSubject: Re: Gearbox oil dilema   Gearbox oil dilema Icon_minitimeThu Nov 19, 2009 8:19 pm

You can tell I started racing later (and must be much younger) than Mike, My Bantam gets 300ml of oil Laughing
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mjpowell

mjpowell


Number of posts : 1074
Localisation : Lincoln England
Registration date : 2006-12-09

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PostSubject: Re: Gearbox oil dilema   Gearbox oil dilema Icon_minitimeTue Nov 24, 2009 7:13 am

Mike 10floz total! James 300 what? .... do you remember pounds shillings and pennies?
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