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Old 29th May 2007, 05:35 PM   #141
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Re: ZFQ new proposed GT40 transaxle

Chris, glad to see you are still hard at it. I wish this had been available when I was screwing around with a ZF Type 2, which may not be over. I am competing for the "world's longest build" award. Actually, I may have won it already Best regards to you, Chris, and good luck with the ZFQ, it looks brilliant.
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Old 9th June 2007, 05:54 PM   #142
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Re: ZFQ new proposed GT40 transaxle

Chris,

In the 'G50' thread in the -Powertrain & Transaxles Forum- Frank Catt mentions that the ZFQ is a ZF case redesigned to accomodate porsche gears. Is this the case ( pardon the pun )?

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Old 9th June 2007, 06:40 PM   #143
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Re: ZFQ new proposed GT40 transaxle

Quote:
Originally Posted by jac mac View Post
Chris,

In the 'G50' thread in the -Powertrain & Transaxles Forum- Frank Catt mentions that the ZFQ is a ZF case redesigned to accomodate porsche gears. Is this the case ( pardon the pun )?

Jac Mac

85 mm shafts center distance is an historical Porsche parameter.
Could be a coincidence
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Old 9th June 2007, 07:41 PM   #144
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Re: ZFQ new proposed GT40 transaxle

hi Guys

The ZFQ has Quaife manufactured gears throughout.

Regards

Chris
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Old 11th June 2007, 04:03 AM   #145
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Re: ZFQ new proposed GT40 transaxle

Hello Chris,
I have a question on the length of the ZFQ, You said it is 569mm, Does this include the oil pump?
Thanks, Ken
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Old 11th June 2007, 04:32 AM   #146
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Re: ZFQ new proposed GT40 transaxle

Quote:
Originally Posted by Kenny J View Post
Hello Chris,
I have a question on the length of the ZFQ, You said it is 569mm, Does this include the oil pump?
Thanks, Ken
Hi Kenny

The final production drawings are in the link below, the optional oil pump sits above the rear chassis cross brace on the GT40 and adds about an 1" to the length.

Chris.
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File Type: pdf E-62G1-01.pdf (267.4 KB, 394 views)
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Old 11th June 2007, 09:27 AM   #147
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Re: ZFQ new proposed GT40 transaxle

Chris,

Being somewhat of a skeptic, if the ZFQ box has the historical Porsche dimensions with Quaife made components, how can the transmission take higher levels of torque?

What testing is Quaife doing to show the box will take the torque?

Thanks
Dom
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Old 11th June 2007, 12:00 PM   #148
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Re: ZFQ new proposed GT40 transaxle

Hi Dom

Quaife will use a machine called a dyno to test the ZFQ. Then it will be fitted into a SPF and a Southern GT for further testing.

The 85mm shaft centres is not unusual for performance transmissions, in addition to the shaft centres being 85mm the width of the gears, size of the shafts and bearings plus the material spec helps us achieve our rating, don't forget that the regular ZF only has 79mm shaft centres, smaller shafts, slimmer gears of smaller diameter and smaller bearings.
The ZFQ is made to replace and upgrade the ZF specifically for the GT40, as a nut and bolt replacement using the same bell housing and output shafts.

Regards

Chris.

Last edited by Chris Melia; 11th June 2007 at 12:13 PM.
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Old 11th June 2007, 12:15 PM   #149
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Re: ZFQ new proposed GT40 transaxle

Chris,

Like so many others, looking forward to your results.

I know you will keep us posted.

Best
Dom
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Old 11th June 2007, 06:47 PM   #150
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Re: ZFQ new proposed GT40 transaxle

Quote:
Originally Posted by Chris Melia View Post
Hi Dom

Quaife will use a machine called a dyno to test the ZFQ. Then it will be fitted into a SPF and a Southern GT for further testing.

The 85mm shaft centres is not unusual for performance transmissions, in addition to the shaft centres being 85mm the width of the gears, size of the shafts and bearings plus the material spec helps us achieve our rating, don't forget that the regular ZF only has 79mm shaft centres, smaller shafts, slimmer gears of smaller diameter and smaller bearings.
The ZFQ is made to replace and upgrade the ZF specifically for the GT40, as a nut and bolt replacement using the same bell housing and output shafts.

Regards

Chris.

Chris,
very friendly, what is the problem in telling us the width of the gears,the modules, the pressure angles and the helix angles???
Soon or later we will be in the position di open one of your boxes to see what's inside.
I have declared all those datas. I promise that i keep my thoughts for my self or I tell you privately without any further show.
Regards
Wanni
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Old 21st June 2007, 02:32 PM   #151
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Re: ZFQ new proposed GT40 transaxle

Hello all,

I have a question for Chris: I am wondering how quickly one can get a ZF-Q. I have been waiting for an RBT ZF for a while and would definitely consider getting a Quaife instead if it arrives quickly. I'm sure I'd find a buyer for the RBT ZF when I get it!

Thanks
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Old 21st June 2007, 04:28 PM   #152
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Re: ZFQ new proposed GT40 transaxle

Quote:
Originally Posted by FOX1 View Post
Chris,
very friendly, what is the problem in telling us the width of the gears,the modules, the pressure angles and the helix angles???
Wanni
Tell us, or tell you?



In a commercial world surely IP rights apply?
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Old 2nd July 2007, 01:56 PM   #153
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Re: ZFQ new proposed GT40 transaxle

Quote:
Originally Posted by Chris Melia View Post
May 17, 2007

Hi Kim

We expect the first 20 production boxes to be built and ready for shipping in two to three months time.
Quaife have made the production of this transaxle a priority.

Regards

Chris.
Chris:

As one of those waiting for your Quaife unit so that I can retrieve my car from Olthoffs, can you update us on the delivery dates you listed above? According to your earlier expectation, we should be seeing them between July 17 and August 17, right?

Thanks!

Kim
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Old 3rd July 2007, 03:27 PM   #154
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Re: ZFQ new proposed GT40 transaxle

Hi Kim

You have PM
regards

Chris.
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Old 10th July 2007, 12:30 AM   #155
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Re: ZFQ new proposed GT40 transaxle

Chris,

Please excuse my lack of keeping up with the latest on this thread. I get rather distracted when a good thread gets hijacked and driven off topic.

Getting back on track, has a price per unit been established? And what testing have you done with your units in cars, and what were the results?

Thank you in advance for your time and assistance,
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Old 11th July 2007, 05:18 PM   #156
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Re: ZFQ new proposed GT40 transaxle

To keep everyone up to date, both myself Chris and John visited Quaife today to check out the first casting to be produced ready for machining. We were extremely impressed with the quality of the casting even in its pre-machined state. The finished box should be on test in the next few weeks.
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Old 12th July 2007, 03:25 PM   #157
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Re: ZFQ new proposed GT40 transaxle

Chris et al

Lookin' good

John

Last edited by John Lowe; 12th July 2007 at 04:52 PM.
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Old 13th July 2007, 09:22 AM   #158
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Re: ZFQ new proposed GT40 transaxle

Thanks John
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Old 5th September 2007, 09:07 AM   #159
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Re: ZFQ new proposed GT40 transaxle

Well I finally got hold of the fist ZFQ ready for testing.
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ZFQ new proposed GT40 transaxle-dsc00228-jpg   ZFQ new proposed GT40 transaxle-dsc00196-jpg   ZFQ new proposed GT40 transaxle-dsc00202-jpg  
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Old 5th September 2007, 09:23 AM   #160
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Re: ZFQ new proposed GT40 transaxle

Zfq Photos
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