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After seeing the damage to Andys' car I'd really like to have the door bars shaped so that they curve out into the door apperture the same as the hot rods use
maybe mk1's are different but in my MK2 which has a SD cage if you had a curved door bar you would have to gut the door or it wouldnt shut
OK,OK Tom>>> don't rub it in thank god you dads not in the same race class
Graham,the doors are already gutted (it's a race car) but are alloy panelled (inside) at the mo although I'll probably get some kevlar doors or skins ( was already looking when you told me your plans Andy)now that they're more readily available as you know weight is a real disadvantage to a racer.(just wish I could lose weight so easily)
Rollcentre racing do a weld in kit that can swoop out into the door, you'll need to tweak them though as they are a universal fit, have a look at Retro Als door bars
Rollcentre racing do a weld in kit that can swoop out into the door, you'll need to tweak them though as they are a universal fit, have a look at Retro Als door bars
Thanks Gary,I was thinking of bending some tube up myself and possibly copying SD s universal bolt on clamps so they stay within the non modified rollcage rules.But thinking about it the blue book states homoglated rollcages, mine's way out of date so I suspect the rule doesn't count
But thinking about it the blue book states homoglated rollcages, mine's way out of date so I suspect the rule doesn't count
not quite, your roll cage will have a drawing number that is held on file with the msa, a competition roll cage has to comply with what they have on file irrispective of whether is 6 months or 60years old, or it needs specific certification from the msa
not quite, your roll cage will have a drawing number that is held on file with the msa, a competition roll cage has to comply with what they have on file irrispective of whether is 6 months or 60years old, or it needs specific certification from the msa
There are other cars with modified SD cages running in the DMN,what are the chances of them having certification? Or can you get away with certain changes? OR would it be ok if they stay the same as the drawings in the blue book ?
i modified a cage and got away with it for years until i ran into a stroppy scruit, eventually he agreed to let me out and i continued to race with the same cage until i wrote the car off a couple of years later.
if you stick to having bolt on additional reinforcements as per the blue book your be fine
I thought it was about time for an update: Well,the last sprint of my season was at Lydden Hill on October 27th we arrived there with me needing to either win or finish one place behind Paul Goddard in his rapid BDA engined Zakspeed bodied yellow mk1 to win my class in the all circuit championship. In practise I ended up setting the 2nd fastest time,then in the 1st timed run I managed to throw the car off the track at the Devils elbow,(I was distracted by the photographer) narrowly missing the tyre wall and getting about 3ft in the air whilst sideways so ended up with no time set so only had one timed run to set a time which had to be within 1 place of Paul.
I gave the car a quick visual check over but couldn't see anything bent although the mark on the steering wheel was now about 30 degrees from where it should be in the straight ahead position.
I ended up lining up just as the last car in class D7 left the line and just about had time to do my seatbelts up before lining up for the run,before the lights went green I let the car ease forward and broke the beam setting the clock offI left the line not knowing what was bent on the car but decided that I had to just go for it and despite very bad understeer I completed the course,went back to the paddock and awaited the results...........2nd in class on the day and after dropped scores I won both class D7 and Category D overall for the year by1 point.
Anyway,I'm now going racing in 2008 (subject to the medical) but still intend to do the odd sprint aswell. Plans for the car include a 4 speed gearbox in place of the type 9,fibreglass doors, and either a new rollcage or more bars added to the current one, I'll be sticking with the current engine.
Paul Goddard:
not sure about going back to a 4 speed box though, if you do you could easily end up in the situation that your car is way under or over geared depending on the circuit, unless you have a nice supply of alternative diff ratios, even with a T9 alex ribbins was swapping diffs to get the best from the car
not sure about going back to a 4 speed box though, if you do you could easily end up in the situation that your car is way under or over geared depending on the circuit, unless you have a nice supply of alternative diff ratios, even with a T9 alex ribbins was swapping diffs to get the best from the car
Thanks Graham,we used to change diffs for each venue when we raced hotrods,tbh I haven't made a final decision but when I built the car in the 1st place I'd reckoned on using a 3.89 diff and all five gears at Goodwood (the car was built with mainly Goodwood in mind) and then 4th at other circuits but found that it was way too high geared for anywhere other than Goodwood,I've ended up changing diffs anyway and used a 4.1 at brands and silverstone (stowe) and a 4.4 at Lydden and still didn't use 5th!
I've got 2 lsd units so changing ratios all of the time will mean swapping the lsd unit over between crown wheels and casings.I have got 1 of each ratio from 3.54 down to 4.44. The main problem with using the 5 speeder is that I occasionally get 5th instead of 3rd
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