<VV> Flat Towing, my experience & viewpoint

[BBRT]

To beat the hell out of this, I respectfully disagree.

I flat-towed (FC) from Las Vegas to MD without subsequent problems to the 
trans.  At speeds to 70mph.  The main gear stack in the trans is just above 
the fluid level in the transmission.  Any splash at all due to varying 
levels in trans-slosh, up hill, down hill, from the diff ring gear, etc. 
will be picked up by the rotating mainshaft (from the pinion gear in diff) 
and a couple of the gears fixed to the shaft.  It will be splashed around 
and any residual drag of fluid or drag due to needle bearings in 
clutch/input  gear will turn input/clutch gear and the cluster gear.  There 
is no load, so it won't take much to turn larger mainshaft gears and cluster 
gear.  Then there will be splash for main bearings.  May not be enough or it 
may be. The needle bearings in the clutch/input gear lubrication from gear 
oil is marginal as indicated by 68-69 trans having three holes at the root 
of the gear, more or less between the needle bearings on the inside.

With gear oil full up to the level in both diff and trans, I will wager 
there will be no problems flat towing a manual transmission Corvair in 
neutral.

Chuck S
BBRT


----- Original Message ----- 
From: <BobHelt at aol.com>
>
> What happens is that the ring gear in the diff will cause some lube to be
> transferred into the tranny, and then it will flow back into the diff to 
> keep the
> two levels constant (different, but constant).
> BUT this flow of lube into the tranny WILL NOT provide lubrication to the
> mainshaft bearings unless the cluister gear is rotating (which requires 
> the
> engine to be running and clutch engaged. No matter how you slice it, the 
> engine has
> to run to get the mainshaft bearings lubed.
> Regards,
> Bob Helt
>
>
> In a message dated 7/20/05 5:58:15 AM US Mountain Standard Time,
> UltraMonzaWest at aol.com writes:
>
>> In a message dated 7/20/2005 5:26:22 AM Pacific Daylight Time
> khammett at stainlessfab.com > writes:
>>
>> >Since the axle and transmission share their fluid (on a manual Corvair)
>> >does
>> >this indicate that with the proper fluid level the axle will lubricate 
>> >any
>> >points in the transmission that need it or have I been mislead over the
>> >years?
>> >
>> *****************************************************************************
>> *
>> *******
>> YES!    / NO  you haven't been mislead
>>
>
> _______________________________________________
> This message was sent by the VirtualVairs mailing list, all copyrights are 
> the property
> of the writer, please attribute properly. For help, 
> mailto:vv-help at corvair.org
> This list sponsored by the Corvair Society of America, 
> http://www.corvair.org/
> Post messages to: VirtualVairs at corvair.org
> Change your options: 
> http://www.vv.corvair.org/mailman/options/virtualvairs
> _______________________________________________