Sandboy Posted December 6, 2015 Share Posted December 6, 2015 Understand there is a template out there to re-locate the top seat belt mounts for use with FHR so could I trouble someone for a copy please? Link to comment Share on other sites More sharing options...
cskip Posted December 8, 2015 Share Posted December 8, 2015 I have a copy of the template. Send me your email address and I will send you a copy. Link to comment Share on other sites More sharing options...
Sandboy Posted December 8, 2015 Author Share Posted December 8, 2015 thanks cskip, blatmail on it's way. Link to comment Share on other sites More sharing options...
Sandboy Posted December 10, 2015 Author Share Posted December 10, 2015 Thanks cskip for template Link to comment Share on other sites More sharing options...
Jeff S Posted December 11, 2015 Share Posted December 11, 2015 Guys,Is this for imperial or metric chassis... or both? Which nuts and bolts do you need?Jeff Link to comment Share on other sites More sharing options...
Simon.Rogers Posted December 11, 2015 Share Posted December 11, 2015 Just buy one of these http://simpson-europe.com/head-and-neck-restraints?product_id=224from Dave Kimberly and save all the hassle of alteration and its safer and more comfortable to wear! Link to comment Share on other sites More sharing options...
mikecocker Posted December 11, 2015 Share Posted December 11, 2015 Check the 249 dimension on your seat belt fixings and if different amend accordingly, but it fits my metric chassis so I expect its the same on imperial. I'm not sure why it calls for 14.5 dia holes as from memory the bolts are 7/16 unf and 11.5 dia would be nearer the mark I think. Link to comment Share on other sites More sharing options...
Sandboy Posted December 11, 2015 Author Share Posted December 11, 2015 Mike, you're right the bolts are 7/16 unf, so i'm wondering if the larger dia hole is to allow for the stepped bushings that allow for swivel.Jeff, Grade 8 imagine, not had a chance to mock up in garage yet so not sure what lengths to go for, but suggestion is that plate is made from 3 or 4mm steel so allowing for harness lug, bushings and nut would imagine an inch long would be sufficient. Although I'm considering whether to weld a boss in under each hole to spread the load a bit - just because i've had too many pies - so would need to go longer on bolts.Simon, if I'm going to have enough left of upgrade budget for some of your trick shocks then it's going to be HANS for me, 3rd of price of Simpson as far as I can see, unless you know otherwise? Link to comment Share on other sites More sharing options...
Simon.Rogers Posted December 12, 2015 Share Posted December 12, 2015 Give Me Kimberly a call at Tweeks. You may be surprised but yes its more expensive.BUT I can wear it in any car or as a passenger and I have side protection and its purported on Mort forum threads in many various places that they are significantly more comfortable to wear. I have not worn a Hans so can not confirm but for me the main thing is side impact protection and it goes with me not the car.P's I think you are miss understanding how the seat belt Bush is supposed to workThe bolt hole should suit the bolt size. The top hat bush is supposed to have a greater step height than the thickness of the belt plate. When the bolt is tight this means the plate is not and it can rotate.Forgive me if you new that but sitting the bush into the wider plate hole would not achieve this. Link to comment Share on other sites More sharing options...
Sandboy Posted December 12, 2015 Author Share Posted December 12, 2015 Simon, all fair points in favour of simpson but cost will sway it for me especially as need to buy new helmet too, although might change mind when try HANS on.All advice gratefully received, see what you mean but think i need to get some alternative top hat bushes or else turn the ones i have down to give a longer inside collar, I've got a bush going in from either side of plate to allow swivel. Link to comment Share on other sites More sharing options...
cskip Posted December 12, 2015 Share Posted December 12, 2015 I am also strongly considering the Simpson Hybrid. Although for the cost of the making up the HANS bracket (peanuts in comparison to the Hans or Simpson) I thought I might as well. And if I do go Simpson then having the belts equidistant would always be of benefit.. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted December 13, 2015 Member Share Posted December 13, 2015 I had a set of top hat washers made for ordinary belt plates. There are some still available for small donations to NtL. Let me know if you'd like the dimensions.Jonathan Link to comment Share on other sites More sharing options...
Sandboy Posted December 13, 2015 Author Share Posted December 13, 2015 Thanks Jonathan, having a break from fettling until after New Year but will let you know then if need to take up kind offer. Link to comment Share on other sites More sharing options...
Simon.Rogers Posted December 14, 2015 Share Posted December 14, 2015 Dave Kimberly will do a Hybrid Sport for £436.50 + vat if anyone wants one.01978663027 - direct line. Link to comment Share on other sites More sharing options...
Grahame W Posted December 15, 2015 Share Posted December 15, 2015 SimonAs our resident expert perhaps you can help, I was reading through the Simpson info and I got the impression that the angle and positioning of the top mounts when using the Simpson device was just as critical as when using a classsic HANS device so you have to make the chassis mod no matter which device you decide to useOr am i mistaken (more then likely!!)Grahame Link to comment Share on other sites More sharing options...
Area Representative Richard Price Posted December 16, 2015 Area Representative Share Posted December 16, 2015 http://simpsonraceproducts.com/pdf/inst/Hybrid_Installation_Manual.pdfGrahame,That's interesting! I read that exactly as you do!It would appear that Simpson Hybrid requires very similar harness anchor points to a traditional HANS. Infact, it looks like the desired mounting points for the Hybrid are actually closer than a traditional HANS. Link to comment Share on other sites More sharing options...
Simon.Rogers Posted December 16, 2015 Share Posted December 16, 2015 When I have spoken to the chap who actually designed the system he said not the case. So long as they were not wide which is not the case for us.i will question him again at Autosport but for the additional side impact protection and comfort even if we do need to alter belts it's what I will use. Link to comment Share on other sites More sharing options...
david nelson Posted December 16, 2015 Share Posted December 16, 2015 Simon you talk about comfort but I am not uncomfortable when I am wearing my HANS. Having not tried the Simpson I can not comment if it is more or less comfortable than a HANS.If the plate adaptation works for you it a quick and cheap way of achieving compliance. David Link to comment Share on other sites More sharing options...
Simon.Rogers Posted December 16, 2015 Share Posted December 16, 2015 I have read on many forums about the discomfort of the HANS compared to the Simpson.I have also seen reports that after a big impact where admittedly the device probably saved significantly greater injusry a HANS will have damaged a few ribs.The Hybrid does not do that.But again its the side impact protection I want.Everyone is individual and will have their own preference and so it should be. Until you are comp sec and can set out your own rules back in your box !!! Or are you escaping the entertaining you have to do ? Link to comment Share on other sites More sharing options...
Englishmaninwales Posted December 16, 2015 Share Posted December 16, 2015 Link to comment Share on other sites More sharing options...
david nelson Posted December 16, 2015 Share Posted December 16, 2015 The statement still holds I find my HANS comfortable. I can not comment if it less or more comfortable than the Simpson as I have not tried it. Re safety! Not sure there is much evidence to say one is better than another in a Caterham. Go one stage further, there are only a few of us who have chosen HANS for safety reasons not just because the MSA say you must. David Link to comment Share on other sites More sharing options...
Drumster Posted December 31, 2015 Share Posted December 31, 2015 Re measurement of shoulder belt fixings, mine is a '92 de dion chassis and hence imperial. The distance between the centre of each fixing is significantly different to the measurement shown in the above template,For the record mine is 8" no laughing at the back please! (or 203mm in this new fangled metric malarkey ) Link to comment Share on other sites More sharing options...
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