[Fot] Quaiffe Versus Gripper -

[Jason Ostrowski]

Keep in mind that the question was a GT6 question, 
The top 3 GT6’s at the Kastner Cup were all running welded Differentials. 
I have run both a limited slip and welded in more than one GT6 racecar. 
To me there is no comparison.
Welded wins.
You have to be a very deliberate and a careful downshifter for certain. 
But, All the power you need is ALWAYS there.
Without exaggerating....The fastest times ever turned by A GT6 at Road America Were recorded this past weekend during the Kastner cup. 
The welded Diff is the fastest setup for a GT6, period. 
With a minimum of an additional $600 fee For the limited slip, I see no reason to switch unless maybe it might last longer and you would like to go slower.
If you are a good driver, The winning answer seems to point toward welded.

Jason Ostrowski 
Friendly Ghost Racing 
1969 Triumph GT6+ racecars

Sent from my iPhone

> On Jul 20, 2023, at 6:59 PM, Scott Janzen via Fot <fot at autox.team.net> wrote:
> 
> Mike, any relevant same-track comparisons in lap times, welded vs quaife?
> 
> On Jul 20, 2023, at 12:33 PM, Mike Harmuth <ofracer at gmail.com> wrote:
> 
> Scott, I went from a welded diff to a Quaife last year. Easier in the paddock etc to drive and push around. In the corners, less fighting the wheel, more point and shoot. Downside, I'm getting some wheel hop when I hit the gas. I've been making suspension, tire pressure and shock adjustments to dial it out, almost there. For the K Cup (and not one of the fast cars), I put an old welded diff in to get a better ratio (3.89) vs the normal 4.11 Quaife. Not sure I made the right call, no idea how many hills were at RA, but with all the settings the same, no wheel hop so it must be caused by the Quaife.
> 
> GT6 diff in the car for the big stub axles, Quaife PN QDF8K. I ordered it last spring directly from Quaife when the exchange rate was pretty good.
> 
> mike
> 
> 
> On Thu, Jul 20, 2023 at 11:58 AM Scott Janzen via Fot <fot at autox.team.net> wrote:
>> Does anyone have experience with a Gripper diff - or a Quaiffe?  I currently run a welded diff in the GT6 and am contemplating whether any advantage could be gained by making a swap.  Certainly curious as to what the super fast GT6s at the Kastner Cup were running.
>> 
>> Scott Janzen
>> '68 GT6
>> 
>> 
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> <QDF8K.pdf>
> 
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