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Dudders
22-08-2012, 04:51 PM
Need to do my diffs, what sand paper do people use for the plates?

tcboy1983
22-08-2012, 04:56 PM
Go super fine and just take ur time

Dudders
22-08-2012, 05:01 PM
What grade though?

Dudders
22-08-2012, 05:02 PM
Found this

http://www.rcshortcourse.com/forum/team-associated-sc10/22122-build-break-sand-ball-diff-rings-perfect-diff.html

adon30
22-08-2012, 07:02 PM
Looks a decent article will read when I get chance.
Think I use 500-800 grit but with water.

AndrewCaunt
22-08-2012, 07:15 PM
i allways use 600 grade wet and dry:thumbsup:

manic
22-08-2012, 07:15 PM
Use oil not water then you have no chance of leaving any water on the plates to go rusty. just 3in1 or cooking oil will do

manic

AndrewCaunt
22-08-2012, 07:18 PM
i use brake cleaner :)

manic
22-08-2012, 07:23 PM
Brake cleaner is good but it might affect the glue holding the grit to tue paper. then.you might get grit in your diff. but as you got the brake cleaner to hand just wash them off

manic

gixxer
23-08-2012, 05:31 AM
Personally i put new ones in with a full rebuild kit saves any bother And a super smooth diff :thumbsup:

Chris-S
23-08-2012, 07:16 AM
Personally i put new ones in with a full rebuild kit saves any bother And a super smooth diff :thumbsup:

New ones arn't always flat though and its best practice to flat them down before use.

mark christopher
23-08-2012, 07:35 AM
Use oil not water then you have no chance of leaving any water on the plates to go rusty. just 3in1 or cooking oil will do

manic

Odd as when you flat a big car with wet and dry you use water. Then dry then paint, doubt you will find anyone using oil...

bodgit
23-08-2012, 08:57 AM
1000 wet and dry
YOMu6Fu3orI

RogerM
23-08-2012, 11:17 AM
Tried a few different combinations and starting with 800 grit to remove any marks then 'polish' with 2000 grit works well for me.

I use brake cleaner to "wet" the paper and plates and keep topping it up regularly or when it starts to 'feel' different.

estebandonde
23-08-2012, 01:14 PM
I use 600 sandpaper with Jizer (don't laugh!) it's a degreasing agent and have been using it for years.

works well for me

manic
23-08-2012, 01:22 PM
Odd as when you flat a big car with wet and dry you use water. Then dry then paint, doubt you will find anyone using oil...

only a recomendation. cos when you flat a full size car you blow it off with compressed air. warm it with heat/infa red lamps they primr/spray.
in rnguneering machines run on a coolent witch is an emultion of oiland water but even then they can rust. an engineering lapping machine typicly uses on a very thine high grade oil on the component and lapping faces/stone

manic

BeachBuggyPhil
25-08-2012, 03:27 PM
You wouldn't use oil to flat back a real car as it would be a pain to remove and the paint could react. Modern paints are water based anyway so flat with water and then cleaning with panel wipe and spraying in a dry warm environment helps prevent rusting of bare metal.
I'm pretty new to ball diffs and have flattened diffs with the only fine sandpaper I own on a smooth surface but have discovered they've become even smoother with use so I may spend a bit more time on smoothing the diff plates and I think I'll use 3in1 as its close to hand then clean with panel wipe and tissue to remove grit or swarf.
:)