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Granny Fan
Original Poster
28 posts
27 months
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Hi there, Been trawling tinterweb for info on roll cages for a '61 Grantura, found a few articles. From an FIA article regarding the age, it points to either a 38mm (inch and a half) 2.5mm thick or 41mm (inch and 5/8) 2mm thick. It was an old article, is it still relevent? http://www.fia.com/resources/documents/8950658__ap...Your thoughts would be greatly appreciated. All the best. Jay
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Fiscracer
353 posts
79 months
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I believe the current regs are at http://argent.fia.com/web/fia-public.nsf/5BE6AD18A...I'm not sure why you would need an FIA cage as I don't believe a 61 Grantura was never homologated? If you go to Rollcentre, or Safety Devices they do them off the shelf for early TVRs or just go to a specialist who can get it certificated.
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Granny Fan
Original Poster
28 posts
27 months
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Thanks for link, 61 Grantura has a FIA Recognition number 32.
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Fiscracer
353 posts
79 months
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Granny Fan said: Thanks for link, 61 Grantura has a FIA Recognition number 32. Not sure what that means. I was under the impression that TVR's first foray into international competition in period was the Le Mans entry. So what spec is the 61 Grantura - torsion bar and MGA or Climax engine?
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thegamekeeper
1,990 posts
151 months
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Almost 50 years to the day Mark Donohue eventually to drive in F1 for Penske finished 25th in the Sebring 12 hours in a torsion bar suspension, 1622cc MGA engined TVR Grantura Mk2a. Prior to that Keith Aitcison/Colin Escott in 1961 Goodwood RAC Torist Trophy. Peter Bolton (TVR driver at 1962 Le Mans) entered RAC Rally in Grantura, Arnold Burton of tailoring fame 1961 Tulip Rally and same in 1962 to name but a few pre 1962 Le Mans internationa events
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jellison
12,630 posts
146 months
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Maybe those fia types will give anything a doc - if you blind them with enough bumph.  My cage was a tight squeeze to get it! Still need a few tweeks.
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Granny Fan
Original Poster
28 posts
27 months
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FIA Recog no' 32, is the mk 2a with a 1588cc mga lump with torsion bar set up, etc etc.
Jon, what size tubing have you used, is it a six point cage, have you made your body bolt on or bonded?
Cheers.
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jellison
12,630 posts
146 months
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Granny Fan said: FIA Recog no' 32, is the mk 2a with a 1588cc mga lump with torsion bar set up, etc etc.
Jon, what size tubing have you used, is it a six point cage, have you made your body bolt on or bonded?
Cheers. My Cage is full FIA spec - not sure what size (made top company in Holland for Espers Grantura a couple years back) 200 rear end like my Griff (no butchering to make it a 400 for me). Need the base plates changed for my different shaped pads for th emain part and differnt back bars (rear attachment in slightly different position, wider and a bit further back (as they all are) and a cross bar, plus get door bars. Hopefully be done in next month. Don't want it bonded. It will be bolted on. It has two extra pads to secure it in more (one further down the footwell on the outside and on on the inside rear opposite the b-post one.
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Granny Fan
Original Poster
28 posts
27 months
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looks quite substantial 42mm to 45mm I guess. Be interesting getting in and out with a door bar, better start practising yoga!
Cheers for now.
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jellison
12,630 posts
146 months
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Yep will be tight! Sometimes being on the shorter side helps.
I have alot of practice from the TR's.
Plus the steer wheel comes off.
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Granny Fan
Original Poster
28 posts
27 months
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Here lies the problem, I'm 6'2".
Lowered floor, resiting pedal box and trying to get cage as far back as possible so the seat will go back to the rear bulkhead, is what I'm thinking.
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jellison
12,630 posts
146 months
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Granny Fan said: Here lies the problem, I'm 6'2".
Lowered floor, resiting pedal box and trying to get cage as far back as possible so the seat will go back to the rear bulkhead, is what I'm thinking. Must be v.tight for you if that size. have seen floors dropped (fisc's), but no fan of it, pedal box as far forward should sort the legs out, but then arm might be the issue (too tight). It is just a tidler of a car! I have a dished Momo in mine. Safer too in a BIG hit. I have even raise the front of the footwell level with the cross bar (honeycombe and a think skim of glass). Short arses
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jellison
12,630 posts
146 months
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Cage I got was useless (apart from the 45mm rear hoop). How it ever fitted in a Grantura is beyond me. Front to back tubes when in where so far back from where they should beand too far inboard (you hit you knuckles just turning the wheel (and a small / medium race one!). All going in the bin, bar re hoop. Get a custom job. Odd when it came out of a Grantura (must have been bloody weird!)!
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V8 GRF
5,810 posts
79 months
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jellison
12,630 posts
146 months
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V8 GRF said: I know Nigel, he does not do cages - gets them done outside. Discussing with a few well know caged people.
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heightswitch
3,413 posts
119 months
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Thats strange. he made one for me, and a couple for some mates cars?
N.
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Granny Fan
Original Poster
28 posts
27 months
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Had a chat with Nigel the other day re FIA roll cages, lowering floors etc, extremely helpful, sounds like he has alot of experience in these matters. Going to pop up and see him some time.
Also need to get some dampers, chatted to various people on matter, had opinions on Spax( slightly to long?), Avo(not very good quality?), Koni classic(not adjustable?)Any input would be appreciated.
Cheers.
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jellison
12,630 posts
146 months
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heightswitch said: Thats strange. he made one for me, and a couple for some mates cars?
N. Ah fair do's. Are you driving it around yet? Getting mine doen by Caged of Frome.
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62GRANTIII
101 posts
62 months
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Caged made an excellant job of the cage in IMC's Le Mans Grantura III
It was made to fit very snugly down A post, so as not to hinder use of right leg on throttle !
Ian B
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jellison
12,630 posts
146 months
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62GRANTIII said: Caged made an excellant job of the cage in IMC's Le Mans Grantura III
It was made to fit very snugly down A post, so as not to hinder use of right leg on throttle !
Ian B I discussed this with IMC last year. Actually, he bent pipe (copper housing type) sort of thing at home to the exact shape then knowing the extra to add to each pipes outside diameter they then took all of these to them (rather than the car!) and they bent accordingly and gave him back all the bits. I got the impression they would not fancy doing it that way again. Loverly job but not seen anyone else get their cagesfront legs actually set inside the front A posts molding - massive of extra work. You can use 38mm x 2.5mm tube (fia regss) or 40mm x 2mm for any or all parts of the cage, which helps in getting it as tight to the doors A post as is feasible without going to the extent IMC did (would have cost Alot more for a cage company to do this (he had the time))! With the seat rotated a fraction clockwise so you legs come at the pedal box at a nicer angle you should clear the front post well if it is hard agianst the start of the door opening.
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