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Post by martyn on Sept 26, 2011 21:10:56 GMT 12
Hi Justin,
I know that the back edge of the loop can't be more than 150mm from the centre of the universal but how far forward can I go? My problem is that it is extremely tight to fit the loop within the required tolerances because of the chassis bracing on the cabin side going across the car. I can either fit it 160mm back or with the front edge of the loop just forward of the centre of the universal but nothing in-between. I don't want to cut into the factory bracing so I am kinda stuck. The rear is another issue as the is not enough room to get a loop in. Do you have any photos of other AE85s or AE86s that have passed certification with these loops so I can figure out how to do it. Otherwise I will never pass this cert. You would have all that documentation, wouldn't you? What would be the scenario if it were not possible to fit a loop?
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Post by Justin on Sept 30, 2011 8:15:53 GMT 12
Hi Martyn
There is no limit to how far forward you go, however it needs to be to the rear of the front universal in order to be considered 'effective'.
The 150mm requirement is currently under review, with this expected to be extended to allow for more fixing options - there are often structural members just outside of the 150mm maximum. Stay tuned - any updates will be notified on the LVVTA website.
I can't easily lay my hands on photos of a AE85 or AE86 rear loop, but I'm sure there is information available on the internet through a club forum, or you may be able to get some ideas by talking to someone who is professionally engaged in carrying out vehicle modifications, or an LVV Certifier.
Justin
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Post by martyn on Oct 8, 2011 16:39:59 GMT 12
Hi Justin,
Glad to hear this is under review. When would you expect this process to be done? Would this information be posted on the home page?
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Post by martyn on Oct 11, 2011 20:49:24 GMT 12
Also, I assume to have seen the loop kits for sale on trademe. Would it be ok to weld the "L" bracket to the underside of the car and bolt the loop part to that? This would mean I can place the loop within the required measurement.
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Post by Justin on Oct 18, 2011 7:32:43 GMT 12
Hi Justin, Glad to hear this is under review. When would you expect this process to be done? Would this information be posted on the home page? I can't give you an exact date, but should be within the next few months, and yes it should be notified on the website. We will also be producing an info-sheet which contains all of the relevant drive-shaft safety-loop information. |
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Post by Justin on Oct 18, 2011 7:41:11 GMT 12
Also, I assume to have seen the loop kits for sale on trademe. Would it be ok to weld the "L" bracket to the underside of the car and bolt the loop part to that? This would mean I can place the loop within the required measurement. The brackets could be welded to a suitable structural member, but should be bolted if attaching to the floor. The attachment details are all contained in the NZ Hobby Car Technical Manual. You're best to discuss this with your certifier, he'll be able to look at the vehicle and advise on the best method of attachment, and if you want to weld the loop in place, he'll be able to advise whether the area you wish to weld to will be sufficiently strong. I hope this helps. |
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Post by martyn on Oct 21, 2011 10:03:17 GMT 12
Just had this work done at a Race and Rally prep place here in Takanini. So glad its all sorted now. The guys did a great job. Very tidy.
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Post by stagea on Feb 14, 2012 12:47:43 GMT 12
I am buying a couple of kits for the two piece driveshaft on my Stagea. I believe the standard calls for 2 M10 bolts each side going through the floor. I haven't received the kit yet but it has 4 bolts each side. In this case can the bolts be less than M10 and if so is there a minimum size for using 4 bolts each side or would I be better to just use two of the holes each side and stick with M10 bolts?
PS is the hobby manual that you refer to available online or does it have to be bought from some where in hard copy form?
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Post by stagea on Feb 17, 2012 5:05:11 GMT 12
It turns out that this kit is made from 5mm plate. The makers say that the new standard is 5mm rather than 6mm. Is this correct? I see elsewhere that it is  |
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Post by Justin on Feb 27, 2012 8:36:17 GMT 12
Hi there It really depends on the space available to you for the installation, but I would expect it would be easier to use two 10mm bolts per side. If you decided to go with four smaller fasteners, you'd need to use a minimum of three 8mm bolts. If you're fitting a loop to a floor pan, you'll need to use doubler plates which have a minimum mating area of 3000 square mm, and are as close to square as can be practically achieved. The Hobby Car Technical Manual isn't available online; it can be purchased from the NZHRA here - www.lvvta.org.nz/documents.html#hctm. You might even find a copy at your local library. You're correct about the specification change - the minimum material specification has been reduced from 6mm to 5mm. We know that some off the shelf loops are still less than 5mm though, so make sure you check it first. There's also an infosheet available which might provide some help; www.lvvta.org.nz/images/pdfdl.gifI hope this helps Cheers, Justin |
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