scoobyis2cool
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| posted on 19/9/03 at 09:02 PM |
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MK rollbar bolts
Does anyone know what bolts MK use on their demo cars to hold the rollbar on? They're kinda tapered so they sit nicely on the surface with no
sharp edges. I think Baz said they get them from a window manufacturers or something
It's not that I'm lazy, it's that I just don't care...
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Jon Ison
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| posted on 20/9/03 at 03:44 PM |
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Are they "dome heads" would be ok for road but wunt get away with em if your looking to race, if you cant get any localy i could post some
to you at cost only.
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macspeedy
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| posted on 20/9/03 at 05:06 PM |
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bolts n washers
The bolts on the demo car are 45 degree with a turned up alloy washer, you could use standard, cheese head, with different alloy washers not to sure
if the main roll bar tube will stop the bolt heads from being contactable or not? i fyou have a copy of demontweeks mag, they have a large range of
washery things, hope that is of some help
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MK Goldrush
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| posted on 20/9/03 at 10:33 PM |
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Bolt Size
What thread size are they? We've just received our Chassis and MK don't have a build manual yet - so my question is what size do we need
to secure Roll Bar. I'm guessing to use the rivnuts as it goes into the Square section tube or do we drill straight through? We say about 8mm x
1P ?? to suit rivnut... YES?
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CairB
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| posted on 21/9/03 at 08:03 AM |
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I used 4 off M10 8.8 hex screws for each 'foot'. I drilled straight through the box section for the inner bolts and put 3mm thick 25mm
wide steel spreader plate underneath between the bottom of the box and the nyloc nuts, fettled to clear the weld. M10 black plastic nut covers on the
bolt heads that were on top cover the sharp edges.
Ideally the ones that go through the box section should have a tube that passes through the lower face and clamps against the top face but this is a
bit more awkward to implement.
I'd be a bit dubious about using Rivnuts for this application.
Cheers,
Colin
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Staple balls
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| posted on 21/9/03 at 09:38 AM |
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quote:
Originally posted by MK Urbantiger
What thread size are they? We've just received our Chassis and MK don't have a build manual yet - so my question is what size do we need
to secure Roll Bar. I'm guessing to use the rivnuts as it goes into the Square section tube or do we drill straight through? We say about 8mm x
1P ?? to suit rivnut... YES?
call me an old git if you like, but are you seriously considering rivnuts for something that's there to save your life if you roll it?
i would do as CairB said, also i'd consider using a second nut as a locknut (i know it's not needed with nylock nuts) and to add a bit of
strength
[Edited on 21/9/03 by Staple balls]
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scoobyis2cool
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| posted on 21/9/03 at 03:15 PM |
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Yeah I was thinking of using rivnuts but a) didnt know how to fit them and b) didnt think they looked all that strong. ive decided to bolt straight
through the bars under the mounting plate. shouldnt be difficult to do although you do need to move the outside bolts towards each other to avoid
other bars below. I'm thinking of using M8 bolts, 4 on each side, do you think this will be strong enough?
By the way CairB, have you got any photos of your rollbar mounting?
[Edited on 21/9/03 by scoobyis2cool]
It's not that I'm lazy, it's that I just don't care...
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Staple balls
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| posted on 21/9/03 at 04:43 PM |
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personally i'm thinking of going for M10-M12 bolts, but that's because i'm a fat git and would rather be safe than sorry
may be worth having a look at this thread
[Edited on 21/9/03 by Staple balls]
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CairB
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| posted on 21/9/03 at 04:49 PM |
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Just taken some photos but I'm having a problem uploading. I will try again later.
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