[DeTomaso] ADA LM Pantera 6 sp. Quaife

[Kirby Schrader]

Patrick,

The GT40s forum has a _lot_ of discussion about ZF's being weak and
not being able to handle more than 500HP - quite the opposite of what
you see here on this forum.

I think it's been said here quite clearly... don't abuse them and
they're OK for lots of HP.
Racing, with continuous high temperatures, adds another element though....

Quaife has recently delivered a shipment (I don't know how many) of
their ZF lookalike transaxle to Dennis Olthoff in North Carolina and
he has been installing them in SPF GT40s.

I haven't seen that much feedback on them yet other than 'they are
good', but if you know the guys at Quaife, then I'd contact them and
see what they are rating their ZF replacement at in terms of HP and
TQ. It might be what you're looking for?

Just a thought....
Kirby


On Wed, Aug 6, 2008 at 8:03 AM, Patrick Hals <patrickhals at skynet.be> wrote:
> In re doing the ADA LM, Weight is my N° enemy, so I won't go for a Ricardo, no matter what, as there are other "slimmer" alternatives.
> At LeMans 1994, the gearbox broke because of the pilot who had spun in the gravel, and broke one teeth of the gearbox, while trying to get out of the sand, which requested a gearbox removal ( 4 hours lost... )
> Still, the car always had gearbox problems, later in 95-96 with a Hewland March sequential gearbox too.
> So, not only am I looking for weight saving, but reliability also is among my top priorities.
> ZF's seem to be limited in torque ( which is why we installed an oil cooler on Candy's gearbox, and it was worth it.)
> With ADA, we are talking about a much more powerful engine, a lighter car, a higher torque, higher REVS, higher G force ( the car has ground effect) ... and , while not neglecting RBT's new 6 gears ZF, I am not sure it will stand such an increase on all fronts, for long races. Still, I will ask, many thanks, Jack, for suggesting.
> Quaife is among the top existing manufacturers of new gearboxes, and they are familiar with actual racing technology. "Our" familiar ZF was designed 40 or 50 years ago... and while being seriously improved, I doubt they can match actual race performances in terms of reliability, gear change speed, longevity, price, and probably weight  ( how much does a ZF 6 speed with paddle shift cost and weight ??? ) .
> Also, i'd have to import it from the States ( shipping costs, 10 % custom duty, + 21 % VAT on top of the total amount... ) Even with a strong Euro, it is worth having a look at...
> Many thanks ( should I say, "as usual", Jack ?.)
> Pat
>  Message: 47
>  Date: Tue, 5 Aug 2008 18:38:52 EDT
>  From: JDeRyke at aol.com
>  Subject: Re: [DeTomaso] Quaife 6 speed sequential for the ADA LM
>  Pantera
>  To: adin at frontier.net, detomaso at realbig.com
>  Message-ID: <c2e.3b127637.35ca307c at aol.com>
>  Content-Type: text/plain; charset="US-ASCII"
>
>  In a message dated 8/5/08 9:40:15 AM, adin at frontier.net writes:
>
>  > Patrick, perhaps its the new "Ford GT" team that is running that box? I
>  > don't even know who it is, just that there is a car racing . . .
>  >
>  PRICEY and scarce if true. After nearly a year, a well-to-do friend just
>  located a new Ford GT transaxle for his hi-buck kit car; without shipping, it was
>  over $14,000.... He said his source was turned down by several Ford dealers
>  who claimed they were required to keep them for warranty purposes for OEM Ford
>  GTs that might fail their trannys. Sounds like 1972 with the Pantera's ZF....
>  which also didn't fail much. The GT transaxle is massive- easily twice the size
>  of a ZF. Dunno what it might weigh just yet.
>
>  FWIW Patrick, while its not sequential like a motorcycle trans, RBT offers a
>  6-speed version of the venerable ZF, and someone developed a paddle-shift
>  attachment for it. Call RBT and find out if you're trying to reinvent the wheel
>  here. Remember the last time the ADA car ran at LeMans in '94, its Toyota GTP
>  transaxle is what failed, relegating them to DNF. There's a good chance that if
>  a ZF had still been in place, they could have at least officialy finished,
>  possibly quite high up in the points. FWIW- J Deryke
>
>
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>
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