overdrive question

[slate]

my overdrive sings a bit around 60mph has anyone experienced this. i suspect its a bearing ,is there an addative that will help i dont want it failing on the rbbr

[Richard B]

slate wrote:

my overdrive sings a bit around 60mph has anyone experienced this. i suspect its a bearing ,is there an addative that will help i dont want it failing on the rbbr

Don't put any additives in an overdrive; bad karma!   :'(

[Greeks]

don't know what oil everyone else uses but I always used SAE 80-90 ... the guy who provided my reconditioned g/b and o/d reckons this is quite wrong and insists that I should only use SAE 75-80  :-/

[slate]

Greeks wrote:

don't know what oil everyone else uses but I always used SAE 80-90 ... the guy who provided my reconditioned g/b and o/d reckons this is quite wrong and insists that I should only use SAE 75-80  :-/

i have allways used straight EP 90, but i dont think oil is the problem :-/

[thescrapman]

I have been told that original recommendation from Laycock de Normanville was a 30 weight oil, that now equates to a straight SAE30 oil.

Was just talking to someone earlier who has run his spitfire box on it for 10+ years with no issues.

I myself currently use EP80 GL4.

Have been looking at Castrol SMX-S fully synthetic GL4 oil for the future.

Not taken the plunge yet.

Checking my 1960's Castrol Lubricant chart it says "Hypoy Light" which is now badged Castrol EP80.

Cheers

Colin

[Mj17]

I get a ringing between 60/70 but have always assumed it was just a harmonic frequency for the handbrake cable - interested to know if I have something else to worry about!

[Richard B]

slate wrote:

my overdrive sings a bit around 60mph has anyone experienced this.

What key is it in Eb or C# ?       :-/


Sorry I'll get my coat.............