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GT40 Tech - Chassis,Brakes,Tires,&Wheels Chassis and Handling.

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Old 09-17-07, 08:57 AM   #1 (permalink)
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John Lowe
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SVA handbrake

Hi

Does anyone have any experience getting the HiSpec Monster4 combined handbrake/rear caliper through SVA. Looks a good solution but was told that the fact that the handbrake was mechanical/hydraulic in operation (even though it has a failsafe one way valve so that the brake remains "on" even if hydraulic pressure is lost) could mean a fail.

Any advice would be much appreciated.

John
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Old 09-17-07, 11:07 AM   #2 (permalink)
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Re: SVA handbrake

Believe that the southern has this arrangement, just went through SVA,
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Old 09-17-07, 11:31 AM   #3 (permalink)
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Re: SVA handbrake

Hi John give me a call 01489 784994 or 01489 789143 regards mick.
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Old 09-17-07, 01:45 PM   #4 (permalink)
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Re: SVA handbrake

Mick

Thanks, I'll give you a call

Best

John
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Old 09-17-07, 01:58 PM   #5 (permalink)
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Re: SVA handbrake

Spoke to SVA in Kent this pm . The calliper must be mechanical only therefore the monster 4 is out (I think they had been getting through but an SVA guy spotted that they were not strictly mechanical only and SVA engineers in the UK have been told to fail them).

However HiSpec have just launched a mechanical spot calliper which will meets the regs. They are emailing details this afternoon and I will post them to the site.

John
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Old 09-17-07, 04:42 PM   #6 (permalink)
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Re: SVA handbrake

John,
I am going to try the Wilwood Handbrake caliper. Ofcourse it isn't roven on a 40 yet, but it is only mechanical.

Brett
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Old 09-17-07, 04:48 PM   #7 (permalink)
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Re: SVA handbrake

This is them attached to the hubs running a standard Granada Cosworth 278mm vented disc (pic taken when I was having Mick's rear end put on last week)
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Old 09-18-07, 04:07 AM   #8 (permalink)
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Re: SVA handbrake

Bret

Thanks for that. Do you know when you will be SVA'ing this set up?

Live quite close to you (borders east/west sussex), you'd be welcome to view Frans workings (and mine!) when it arrives.

Best

John
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Old 09-18-07, 07:10 AM   #9 (permalink)
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Re: SVA handbrake

Hi John,
I am hoping early next year, that's with fingers very crossed!! I want to try and get the car at least driveable for Classic next year!

Brett
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Old 09-19-07, 12:34 PM   #10 (permalink)
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Re: SVA handbrake

Hi John,
Another option is to use this type of AP caliper which I fitted to my GTD. I believe these were fitted to the Ford RS200 rally car & several types of Ferrari. This is a very sturdy mechanical caliper & wasn't to difficult to fit. Although I made the bracketry myself, Hi-spec motorsport has the CAD drgs for these as they have supplied caliper mounting hardware to Wealden Engineering for their 4 pot & 6 pot Monster brakes.
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Old 09-20-07, 05:46 AM   #11 (permalink)
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Re: SVA handbrake

Quote:
Originally Posted by brettmcc View Post
John,
I am going to try the Wilwood Handbrake caliper. Ofcourse it isn't roven on a 40 yet, but it is only mechanical.

Brett
brett, ad wilwood they told me that the calipers mechanical handbrake is up to +/_ 800kg cars.............. so unless you are making a 2/3rd model don't park on top a hill
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Old 09-20-07, 08:12 AM   #12 (permalink)
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Re: SVA handbrake

I can't remember where I found this but it might be worth following up :


FOR SALE:Emergency (Hand) Brake calipers. Made from Billet Aluminum and anodized. Replacement Brake pads available form any race car supplier. Easy adjustment for different disk widths, Up to 30mm. 6 different angle adjustments for cable operation Solid mounting system. Simple adjustments for pad wear. Captured components so parts cannot be lost. Stainless steel components.Contact Robert at: rnyenkamp@optical.co.nz

If you think it's OK please post some decent pictures.
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Old 09-20-07, 08:44 AM   #13 (permalink)
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Re: SVA handbrake

Quote:
Originally Posted by lotus-62 View Post
brett, ad wilwood they told me that the calipers mechanical handbrake is up to +/_ 800kg cars.............. so unless you are making a 2/3rd model don't park on top a hill
Interesting, would like to see how they measure their figures to say it is only good for 800Kg. Not that I can rubbish the data, I just would like to understand how they get there.

Anyway, if I can get it to holdfor SVA I won't worry. If I have to park on a hill, I'll just use it and 1st gear

Brett
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Old 09-20-07, 01:08 PM   #14 (permalink)
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Re: SVA handbrake

James, have sent off for details.

Still waiting for details from HiSpec, will chase Friday.

Brett be carefull of under achieving hanbrakes, the one on my Cobra only gets through the MOT because the mechanic is a beefy lad with a strong right arm! Like you in reality I slap it in first and even on a v, steep hill there are no problems

Paul, will follow up on the ap solution.

Thanks for the info

John

Last edited by John Lowe; 09-20-07 at 01:18 PM. Reason: ap caliper
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Old 09-20-07, 01:29 PM   #15 (permalink)
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Re: SVA handbrake

James

Just found this on Lamborghinireplica.com. Await further details - John

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Old 09-20-07, 01:55 PM   #16 (permalink)
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Re: SVA handbrake

Quote:
Originally Posted by lotus-62 View Post
brett, ad wilwood they told me that the calipers mechanical handbrake is up to +/_ 800kg cars.............. so unless you are making a 2/3rd model don't park on top a hill
Rick,
Which model where they talking about when you asked. I know the US site, don't show the Powerlite version that I have, as it is soley licenced through Rally Design. Was it this one: Wilwood Engineering - GM*Metric Caliper ?

Brett
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Old 09-20-07, 02:12 PM   #17 (permalink)
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Re: SVA handbrake

This caliper is "hydra/mechanical". Not sure if SVA would pass it (the HiSpec monster 4 seems to use the same technology) Of course they may not notice as the HiSpec has only recently gone onto a "verboten" list having been passed on earlier occasions.

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Old 09-20-07, 03:30 PM   #18 (permalink)
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Re: SVA handbrake

John,
Thanks for pursuing it.
The Kiwi version looks as though it will fit the bill for you.
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Old 09-20-07, 03:55 PM   #19 (permalink)
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Re: SVA handbrake

John, another picture option, Frank
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Old 09-20-07, 04:21 PM   #20 (permalink)
Lee
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Re: SVA handbrake

Those ap spot calipers are OK, but my understanding is that they have not been manufactured for many years now. The usual one to use instead is the brembo. Many Ult..as use them, as well as Lamborghinis and Ferraris. Here are some shots I took at a track day recently, and my rear setup.
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