paul the 6th
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| posted on 19/12/08 at 10:12 PM |
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A day well spent...
Finished the build table (which is far too high - i didn't account for the extra height the castor wheels would add but meh)... started to mark
out the chassis foundations, all the base rails etc. Managed to get about 80% of them held in place with bits of timber. Started dropping brain farts
left right and centre, then couldn't work out why br7 wouldn't fit and for the adjoining rails to be angled dead straight - decided it was
time to come in and have a beer... Here's some pics so far...
the completed build table
bit of a tight fit with the bike tucked away for the night
tube br7 (nearest horizontal tube across the picture) didn't seem to fit on the centre line with the two adjoining tubes perfectly angled to the
rest of the chassis... decided to leave it til tomorrow
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mark chandler
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| posted on 20/12/08 at 12:30 AM |
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Always good to see a sratch built car, as they say kits are for girls ! 
I measured everything out carefully, the next day a pixie had been in, erased my lines and put some more in, just a tad out.
When it all looks correct start measuring diagonally across the frame, all the errors become apparant then.
Also try and use measuring sticks for parrallel items, ie cut a bit of wood the correct inside length and make sure its an even fit.
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paul the 6th
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| posted on 20/12/08 at 12:45 AM |
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thanks for the tips mark
I must admit, I did pin some of the rails in place, then measured them only to find they were out by an inch, then moved them all and re-pinned, and
then found the whole chassis was just that bit too far forward so the frontal most bits of rail were hanging over by an inch.... moved the lot again!
It's getting there slowly going to get everything else pinned & checked tomorrow morning and crack on with the tack welding.
Luckily I've managed to pick up a flatpack chassis kit by armoto for an amazing price, so everything has been pre-cut with fancy machines which
can do compound angles to within 0.00000000001% accuracy (or something like that). Either way I'm well impressed = I would have completely
fecked up so many of the compound angles and taken ages to get as far as I have if I'd bothered to cut it all myself.
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locoboy
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| posted on 20/12/08 at 02:52 PM |
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A nice looking build table but......
I would be concerned at its rigidity and its resistance to flexing during the build.
It looks like the top is only one sheet of MDF thick, 18mm?
At the end of the day if the table flexes over time then your shassis will be out too.
Tell me to bugger off if you want
ATB
Locoboy
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DavidM
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| posted on 20/12/08 at 04:21 PM |
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That's a good start. Good luck with your build!
David
Proportion is Everything
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paul the 6th
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| posted on 20/12/08 at 06:40 PM |
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quote:
Originally posted by locoboy
A nice looking build table but......
I would be concerned at its rigidity and its resistance to flexing during the build.
It looks like the top is only one sheet of MDF thick, 18mm?
At the end of the day if the table flexes over time then your shassis will be out too.
Tell me to bugger off if you want
Bugger off! jokin!
It is 18mm mdf, with 4 off 50mm x75mm timber screwed down the length of it and 5 off timber screwed across the longways timbers. I found the cause of
the slightly wonkyness on the table = with 2 of the longways timbers, screws had gone through the mdf and into the timber but there was a 2mm gap
(i.e. the timbers weren't flush against the mdf)... unscrewed & re-screwed = problem solved
I'm planning on getting the chassis done as quickly as possible (Without rushing, of course) so flexing over a long period of time
shouldn't be a massive problem. I've already for the foundations tacked in place and now I need to get hold of a protractor to get the
front frame and uprights tomorrow. Not bad for 2 days work but meh 
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