[Land-speed] Fw: Differential Oil

[Ed Weldon]

Fwd to list (I forgot to hit the "reply to all" button)
Ed
----- Original Message ----- 
From: "Ed Weldon" <23.weldon at comcast.net>
To: <neil at dbelltech.com>
Sent: Friday, April 18, 2008 5:23 PM
Subject: Re: [Land-speed] Differential Oil


> Neil states conventional wisdom.  i.e. what we know works.
> But I can't help but wonder how a rear axle gearset would hold up in the
> short duty/highload application of an LSR vehicle with a plain synthetic
> 10w-30 like Mobil 1.
> Has anyone tried this with a hypoid gearset like in a 9"?  How about with
a
> bevel gear set like in a quickchange early Ford ring/pinion? Presumably
this
> would be less sensitive to the boundary lubrication issues in the hypoid
> gear set.
> And in either application, but especially the quickchange, was the oil
> leakage manageable?  Was there any measurable increase in efficiency
enough
> to notice in the speed?
> I hasten to add that I wouldn't be too inclined to try experimenting with
> something like this if I were seriously trying to qualify for a record
run.
> Of course, it's easy to change out a 9" pumpkin if you have a spare and
> you're in a  "throw the whole can in the fuel tank"
> mode.
> Ed Weldon
>
> ----- Original Message ----- 
> From: <neil at dbelltech.com>
> To: "'Dick J'" <lsr_man at yahoo.com>; "'lsr list autox'"
> <land-speed at autox.team.net>
> Sent: Friday, April 18, 2008 4:56 PM
> Subject: Re: [Land-speed] Differential Oil
> > Dick;
> > If you have a hypoid rear end :) then you need an appropriate gear oil,
> not
> > SAE 30W.
> > Regards, Neil   Tucson, AZ
> >
> > -----Original Message-----
> > From: land-speed-bounces+neil=dbelltech.com at autox.team.net
> > [mailto:land-speed-bounces+neil=dbelltech.com at autox.team.net] On Behalf
Of
> > Dick J
> > Sent: Friday, April 18, 2008 4:24 PM
> > To: lsr list autox
> > Subject: [Land-speed] Differential Oil
> > What's your choice for differential oil?  I've heard everything from
> > standard gear lube to SAE30. I'm not running limited slip, I have a
spool.
> >   DickJ   In East Texas