Litemoth
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 posted on 7/7/07 at 09:33 AM |
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Paint my differential?
I'm putting an LSD into to my Striker. The question is, Do I paint it? Or should that be, Are there good reasons not to paint it?
Some time ago I read somewhere that painting them reduces thermal efficiency and prevents them shedding heat, hence the reason that manufacturers
leave them unpainted.
The temptation to make it look nice is strong.
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Hammerhead
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| posted on 7/7/07 at 09:39 AM |
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no idea, but I painted mine, and so have many builders. Not heard any reports of failure due to heat build up because of paint.
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worX
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| posted on 7/7/07 at 09:42 AM |
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paint it!
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BenB
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| posted on 7/7/07 at 10:04 AM |
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I'd paint it. Then again, it depends how often you're going to see it! I see my diff every time I take off the boot cover to fill up the
tank.... On a leightweight where IIRC it's panelled in there'd be less point!!!!
Wire brush, degrease, spray with hammerite.... Job done....
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shades
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| posted on 7/7/07 at 10:09 AM |
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painted mine with Silver hammerite :-)
Thanks
Adrian
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Litemoth
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| posted on 7/7/07 at 10:24 AM |
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Then paint it I will!
I think I have some EasyJet orange round here somewhere....
The house needs a lick while I'm at it 
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robertst
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| posted on 7/7/07 at 12:28 PM |
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i think they dont paint them for cost reasons rather! they're made of magnesium after all...
same thing came up with the engine. i thought why do they paint them black? surely a bright colour (i.e. silver) would be more thermally efficient...
the only conclusion i got to is because thats the cheapest paint.
Tom
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Macbeast
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| posted on 7/7/07 at 09:28 PM |
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If I recall correctly, a black surface radiates heat best. Central heating radiators are painted white because the boss likes that better than
black.
<------------- Painted differential
Silver Hammerite
[Edited on 7/7/07 by Macbeast]
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MikeRJ
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| posted on 8/7/07 at 08:34 PM |
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quote:
Originally posted by Macbeast
If I recall correctly, a black surface radiates heat best.
Only if it's black at infra-red wavelengths. What looks black to us is likely to be an entirely different colour to heat. In practice, there
is little difference in emissivity for most colours of standard paints. You can get special finishes for very high emmisivity, but they won't
be locost.
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:{THC}:YosamiteSam
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| posted on 23/7/07 at 11:42 AM |
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iv just left mine bare - got a narrow wire brush in the dril and cleaned off all the old paint that will crack off eventually - looks the dogs
danglies bare and clean - it still gets hot to touch either with paint or not... no paint is easier once you get it clean!!
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clockwork
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| posted on 24/7/07 at 09:03 AM |
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It's lighter if you don't paint it ;-)
"Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety." Benjamin Franklin.
"Well if you have nothing to hide, you have nothing to fear" Morons the world over.
Locost/Kit builders info and FAQ website:- www.carbuilders.info
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iiyama
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| posted on 24/7/07 at 09:08 AM |
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Sprayed mine with silver caliper paint.
If its broke, fix it. If it aint broke, take it apart and find out how it works!
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designer
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| posted on 24/7/07 at 04:03 PM |
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Leave as bare metal and spray with WD40 now and again and it will not corrode
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