[Land-speed] Lenco Question

Don don_ell at hotmail.com
Wed Oct 27 10:42:53 MDT 2010


What is the angle on your trans? Is it level?


> Date: Wed, 27 Oct 2010 09:30:42 -0700
> From: drmayf at mayfco.com
> To: land-speed at autox.team.net
> Subject: Re: [Land-speed] Lenco Question
>
> I was just looking at the Lenco tranny site. Their trans have clutch
> packs for each gear. And a sprag in each gear sectio as well. At least
> that is what it looks like to me. Seems to me that you would not want to
> modify the fluid too far from what they recommend. This is basically an
> automatic trans just run manually. They also have several sprags sizes
> and perhaps the sprag that seems to be failing is insufficient to do the
> job? Not sure how the fluid gets moved around inside but shuting the
> motor off at speed might be a sure way to kill the sparg(s) also.
> Especially if one is running a really tall rear gear. Not sure what
> version of trans this is, CS1, CS2, Cs3 etc but they all function very
> similarly.
>
> mayf
>
> On 10/26/2010 10:07 AM, ddahlgren wrote:
> > What about micro polishing to reduce friction and that will reduce
> > heat or an oil tank and cooler basically dry sumping the transmission.
> > If you just overfill it you will no doubt foam the oil. Why not a
> > synthetic lubricant that will not break down with heat. This whole
> > thing smells of oil break down from heat and friction.
> > Dave
> > ----- Original Message ----- From: "Jim Webb" <jimwebb at nutsracing.com>
> > To: "'Bryan Savage'" <b.a.savage at wildblue.net>; "'List Land Speed'"
> > <land-speed at autox.team.net>
> > Sent: Tuesday, October 26, 2010 12:01 PM
> > Subject: Re: [Land-speed] Lenco Question
> >
> >
> >> I think Lenco has been very helpful along the way and I've made it
> >> clear to
> >> them that this Bonneville and the unit is in a big heavy truck. As for
> >> lubrication, the recommended stuff is ATF. They recommend 3/4 qt for
> >> each
> >> stage and 1/2 qt for the reverser. I can tell you that is not enough.
> >> For WF
> >> this year, we put about 7 qts in which is about 3/4 full. A vent line
> >> was
> >> added from the first stage into a catch can. Looked like it puked
> >> about a qt
> >> during a pass. Also, this sprag is hurt, but not destroyed as in
> >> previous
> >> years when we ran the recommended volume, so lubrication does seem to
> >> be the
> >> problem/solution.
> >> In my last conversation with Lenco, they suggested maybe using 30W
> >> non-synthetic motor oil, but it seemed like that was pretty much a
> >> guess. An
> >> old drag racer suggested using motorcycle primary oil.
> >> Which ZDDP additive would you recommend?
> >>
> >> Jim Webb
> >> Chock Full o' Nuts
> >> AA/PP A/PP B/PP C/PP D/PP ?/FL
> > _______________________________________________
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