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Search: Posts Made By: 1074R/001
Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels 1st June 2016, 12:01 PM
Replies: 8
Views: 1,594
Posted By 1074R/001
Re: Torsional stiffness : Tube Steel Spaceframe

Having re-read my post, I should add a couple of points for clarification.

1. The 2x lbs to ft.lbs/deg figure is a rough estimate only and, may not give a CTSR of 4+ for all setups. My 'aim'...
Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels 31st May 2016, 01:08 PM
Replies: 8
Views: 1,594
Posted By 1074R/001
Re: Torsional stiffness : Tube Steel Spaceframe

My last post was on this subject, back in 2009. Yes, I'm a lurker more than a participant these days as my main project is an SN95 Mustang Autocross / Open Track car.

Anyway, I've watched the...
Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels 17th May 2009, 09:57 AM
Replies: 44
Views: 6,652
Posted By 1074R/001
Re: Spaceframe Comparison

Paul,

You're not changing the general focus of the thread. It's about good spaceframe design concepts for a GT40, and your input is good. It'd be nice if the other current producers had as much...
Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels 16th May 2009, 10:49 PM
Replies: 44
Views: 6,652
Posted By 1074R/001
Re: Spaceframe Comparison

Paul,

I take it you meant kN/m per deg. Unless my French to English conversion is rubbish, that's 8830 ft.lbs per deg. I must admit that I find that figure astounding.

Unless it's a...
Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels 9th May 2009, 01:03 PM
Replies: 44
Views: 6,652
Posted By 1074R/001
Re: Spaceframe Comparison

Martin,

Sorry, I forgot to compliment you on your car. Looks like it's coming along well. I look forward to seeing it on the road.

I'm moving to Benson (south Oxfordshire) in June so won't be...
Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels 9th May 2009, 12:58 PM
Replies: 44
Views: 6,652
Posted By 1074R/001
Re: Spaceframe Comparison

Martin,

To be honest, I'm a bit of a geek as well as a CARnnoisseur and I like to set up my cars and drive them hard. If I could afford it, I'd be doing what Iain is with his RF 117 down under.
...
Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels 9th May 2009, 10:40 AM
Replies: 44
Views: 6,652
Posted By 1074R/001
Re: Spaceframe Comparison

Yes, I really like his RF. I don't really consider it an RF though as the chassis is effectively a one-off built around the RF base. Lovely machine though, I want one for my garage.

I didn't...
Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels 9th May 2009, 09:07 AM
Replies: 44
Views: 6,652
Posted By 1074R/001
Spaceframe Comparison

I've been looking at a lot of photos for ideas for a semi-monocoque scratch build chassis. I have seen many claims of "full spaceframe" and "fully triangulated spaceframe" but have yet to see...
Forum: GT40 Tech - Powertrain/Transaxles 6th May 2009, 02:20 PM
Replies: 12
Views: 1,846
Posted By 1074R/001
Re: UN1 Query

Stephane,

Sorry, got my numbers a bit mixed.

I've updated my spreadsheet to include the stock ZF box, optional FD and then a few Gulf racing setups.

Cheers,

Stew
Forum: GT40 Tech - Powertrain/Transaxles 5th May 2009, 05:55 AM
Replies: 12
Views: 1,846
Posted By 1074R/001
Re: UN1 Query

Guys,

I just thought I'd post some ratio, rpm and shift comparison info related to my initial enquiry.

As you can see, the 2.66/1.75 upgrade gives the closest ratios to the ZF 5 DS-25-2...
Forum: GT40 Tech - Powertrain/Transaxles 1st May 2009, 01:44 PM
Replies: 12
Views: 1,846
Posted By 1074R/001
Re: UN1 Query

Ian,

Drag racing - none! I wouldn't do that to a car designed for a much more civilised form of competition.

Sprints/Hillclimbs - unlikely and if so, only rarely for a bit of fun.

Circuit...
Forum: All GT40 1st May 2009, 08:06 AM
Replies: 45
Views: 6,303
Posted By 1074R/001
Re: Ultima GTR vis GT40 Replica

Guys,

It's all about tactics. Line up your 450hp GT40 next to your 450hp GTR and while the girls in the Bikini do the pre-race parade in front of the drivers, have your pit crew crawl up and...
Forum: GT40 Tech - Powertrain/Transaxles 30th April 2009, 08:42 PM
Replies: 12
Views: 1,846
Posted By 1074R/001
Re: UN1 Query

Stephane,

Thanks for the info. Just to ensure I've not got it wrong:

Normal UN1 used for applications up to 35 kg.m (343 N.m or 254 ft.lbs) torque
Venturi 260 used UN1 for...
Forum: GT40 Tech - Engines/Induction/Exhaust 30th April 2009, 02:56 PM
Replies: 7
Views: 1,251
Posted By 1074R/001
Re: To stroke or not to stroke, that is the question

For the same power, the 302 will be kinder to your transaxle (important if not modified on a UN1) than the 331 but be less streetworthy.

Just a thought. Either one can be tuned to enough power to...
Forum: GT40 Tech - Powertrain/Transaxles 28th April 2009, 04:14 PM
Replies: 12
Views: 1,846
Posted By 1074R/001
UN1 Query

Guys, I'm just checking the points on UN1s that I've gleaned from the net and other posts.

The 21 on (013) boxes are recommended as being the stronger ones.

The turbo boxes have better gear...
Forum: GT40 Tech - Powertrain/Transaxles 26th April 2009, 03:33 PM
Replies: 60
Views: 17,496
Posted By 1074R/001
Re: UN1 Rebuild

Guys,

Just before anyone breaks anything, a taller final drive ratio will result in a higher torque loading on the gearbox, not a lower one.

Changing from a 0.82 to a 0.76 final drive will...
Forum: All GT40 24th April 2009, 08:26 PM
Replies: 77
Views: 17,702
Posted By 1074R/001
Re: What is it about the GT40 monocoque chassis?

The mono is loved because it looks brilliant and is rarely attainable by those who want a replica. The other reason is that it is dynamically superior to a spaceframe if properly designed.

The...
Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels 22nd April 2009, 07:09 PM
Replies: 10
Views: 8,929
Posted By 1074R/001
Re: need ford gt40 chassis blueprints

Dimi,

It's not that easy. Believe me, I've been trying for about 9 years. Found the odd source but tres expensive.

Stew
Forum: GT40 Tech - Powertrain/Transaxles 1st May 2006, 05:34 PM
Replies: 3
Views: 1,050
Posted By 1074R/001
Re: How difficult are 3U transaxles to find in the US?

No problem, I'll have a look around. If I find a supply, it'll probably be easier to ship a bunch together, but I'll look at the cost of getting them first.

Stew
Forum: GT40 Tech - Engines/Induction/Exhaust 1st May 2006, 02:41 PM
Replies: 8
Views: 1,260
Posted By 1074R/001
Re: Interesting Temperature Symptom

The other possibility is a sticky thermostat. I had the same problem in the Crossflow in my Striker (Lotus 7). Was fine at lower power settings but when I started pushing it it started to give...
Forum: GT40 Tech - Powertrain/Transaxles 1st May 2006, 03:26 AM
Replies: 3
Views: 1,050
Posted By 1074R/001
How difficult are 3U transaxles to find in the US?

Just a question for the Audi users. How "in demand" are the 3U transaxles in the US? The reason that I ask is that I'm in the UK and am happy to have a look around for guys if there is enough...
Forum: GT40 Tech - Engines/Induction/Exhaust 30th April 2006, 05:58 PM
Replies: 27
Views: 24,142
Posted By 1074R/001
Re: Gurney Weslake Head performance

Guys,

After some surfing around the Net, I found this on the GW heads. Sounds like a completely stock, unported pair of heads.

Just in case you're interested.

Stew

*******************...
Forum: GT40 Tech - Powertrain/Transaxles 30th April 2006, 12:39 PM
Replies: 3
Views: 1,062
Posted By 1074R/001
Re: Identifying a 016

Thanks Dave,

I'll get on it. I have a feeling that it's not the one I want (out of a 2.2L gas car) so probably won't have the ratios I want.

Stew
Forum: GT40 Tech - Powertrain/Transaxles 29th April 2006, 05:25 PM
Replies: 3
Views: 1,062
Posted By 1074R/001
Identifying a 016

Guys,

If you've just got the transaxle, how do you tell what suffix it is? It's out of a Audi 100, but not sure which model.

Stew
Forum: GT40 Tech - Engines/Induction/Exhaust 28th April 2006, 07:47 AM
Replies: 27
Views: 24,142
Posted By 1074R/001
Re: Gurney Weslake Head performance

I was pretty sure that many of the modern heads would outperform the original GW heads. Curiosity getting the better of me, I was wondering if anyone had some specifications so that I could compare...
Forum: All GT40 27th April 2006, 11:09 AM
Replies: 27
Views: 3,512
Posted By 1074R/001
Re: Worst Looking GT40

I've chosen the Mk.III not becaue it's ugly, but because the GT40's beauty is that of a rugged racing GT, built like a tank and brutally efficient. The Mk.III is a bit too feminine to fit in with...
Forum: GT40 Tech - Engines/Induction/Exhaust 26th April 2006, 11:39 AM
Replies: 27
Views: 24,142
Posted By 1074R/001
Gurney Weslake Head performance

This is just a curiosity post. Does anyone have flowbench figures for the Gurney/Weslake or Gurney Eagle heads? I'm just curious to find out how they perform compared with modern SBF heads like the...
Forum: Feedback: Buyers, Sellers, & Vendors 21st April 2006, 07:16 AM
Replies: 10
Views: 2,387
Posted By 1074R/001
Re: Great service from Tornado.

I'll echo the positive sentiment for Andy at Tornado. I've yet to buy anything from him, but when I get to the stage of requiring bits, he'll be the first I call. He's put up with my occasional...
Forum: GT40 Build Logs 12th April 2006, 07:32 AM
Replies: 168
Views: 27,801
Posted By 1074R/001
Re: 1st MDA to Canada

To me, the popularity of the #9/6 colour scheme does get a bit dull after a while. I was quite encouraged to see that when 1076 was rebuilt, it was given the team #2 scheme (straight stripe) which...
Forum: GT40 Build Logs 11th April 2006, 11:16 AM
Replies: 168
Views: 27,801
Posted By 1074R/001
Re: 1st MDA to Canada

Very nice indeed. That black powder coat looks far better than the normal alloy on a spaceframe. Shades of a mono I guess.

As for those knocking the Gulf colours, don't forget that there are...
Forum: All GT40 5th April 2006, 12:25 PM
Replies: 20
Views: 2,963
Posted By 1074R/001
Re: Value of GT40 replicas and company survival

Gents, I am only partially in agreement with this argument. Factory Five Racing are a commercial success because of the extremely low profit margins that they run. In the real world, the only way...
Forum: GT40 Tech - Engines/Induction/Exhaust 2nd April 2006, 07:04 PM
Replies: 48
Views: 2,574
Posted By 1074R/001
Re: Estimating RWHP from FWPH?

Just my two bits worth. On big bikes (GSXR 1000 etc), the losses through the gearbox are almost always from 12-15hp. No percentage anything. If the bike produces 165hp at the crank, it's probably...
Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels 23rd March 2006, 11:47 AM
Replies: 98
Views: 41,985
Posted By 1074R/001
Re: Chassis Drawings/Blueprints

Bloody H***! I started this thread over two years ago and just discovered that it's had over 15000 views and 66 replies.

Sorry to all who tried to contact me and got no reply. Not long after I...
Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels 27th July 2003, 06:29 PM
Replies: 98
Views: 41,985
Posted By 1074R/001
Re: Chassis Drawings/Blueprints

Gents,

Thanks for the posts. I've got some good news and bad news on the drawing front. The good news is that Dave Brown of Classic Car Developments in New Zealand, having just completed the...
Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels 6th November 2002, 02:15 AM
Replies: 98
Views: 41,985
Posted By 1074R/001
Chassis Drawings/Blueprints

Has anyone out there built their own monocoque chassis? If so, where did you get drawings? I want to build my own chassis. I've built one kit and, as an engineer, want more of a challenge. Want...
Forum: GT40 Cars For Sale 29th October 2002, 08:44 AM
Replies: 13
Views: 1,174
Posted By 1074R/001
Re: Monocoque & uprights

I would love to buy a book containing enough drawings to produce my own chassis. I have this crazy idea about building a Gulf 1074 replica which uses a Mirage style chassis and don't see the point...
Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels 29th October 2002, 08:02 AM
Replies: 3
Views: 1,008
Posted By 1074R/001
Re: Finding good chassis for GT40 ...

Email Andrew Sheldon at Tornado Sports Cars. Web site at www.tornadosportscars.com. (http://www.tornadosportscars.com.) This spaceframe chassis car is built in the UK (not too far from you) and is...
Showing results 1 to 37 of 37

 
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