Guinness
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| posted on 20/9/05 at 11:35 AM |
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Taking the edge off bodywork
One of the items on my SVA fail sheet was a radius fail with my MK GRP Bodywork.
The inspector found the outside edge between the scuttle and the roll bar to be a sharp edge. He suggested some wet 1600 grade paper would round off
the edge. I ahve ali trim to the cockpit side, it is the external edge he wants sorting.
I haven't tried yet, but don't want to sand through the gel coat. Anyone know roughly how much I can take off that edge without wrecking
the finish.
Cheers Mike
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colibriman
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| posted on 20/9/05 at 11:46 AM |
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could you get away with glueing on a rubber trim?
need a bike engine? - www.colibriman.com
SVA ready Mk Indyblade possibly for sale.....if the offers good...!
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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smart51
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| posted on 20/9/05 at 11:48 AM |
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there is no way to know for sure until you go right through the gelcoat and into the fibre. What is the current radius? 2.5mm is a fairlt sharp turn
for GRP.
You could make a gauge by drilling an accurate 5mm hole (my drills marked 5mm are actually 4.8 on a micrometer). using a hacksaw and a file, cut into
the hole leaving an L shaped piece with 2.5mm radus. Tedious I know.
If I were a long way out I'd sand half of the error away with 600 - 1000 grit paper, remeasure and do almost all of the rest with 1200- 2000
grit. If I were more cautious I'd do it all with 2000 grit. propably best to try a small piece this way, looking reguarly to see if you are
running out of gelcoat. Polish it in with cutting paste and see if you are close.
Do it a bit at a time remember you can take more off but can't put it back again. I think I'd talk to the manufacturer first.
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mookaloid
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| posted on 20/9/05 at 02:02 PM |
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I had to do this at Newcastle for my SVA. I did it while I was there!
Just used a flat file to make the radius and got covered in blue dust... but I got enough off to pass and didn't go through the Gel coat. I
suppose I could have a go at polishing it one day but it really isn't very noticeable
Cheers
Mark
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macspeedy
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 posted on 20/9/05 at 06:13 PM |
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we used alloy from a horse box manufacturer to blend the curves in
see
http://www.locostbuilders.co.uk/photos.php?action=showphoto&photo=P6200009.JPG
will post the name when i find it
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macspeedy
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| posted on 20/9/05 at 06:21 PM |
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found the thread
http://www.locostbuilders.co.uk/viewthread.php?tid=6862
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