Plastic final drive case (TS250/1)

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Plastic final drive case (TS250/1)

Postby smellybeard » Fri May 20, 2022 1:08 pm

I've been chipping away at my barnfind TS250. Current job is to replace the chain and sprockets and clean up everything around the swingarm.

I have the rear sprocket/chain case off and the surface is scruffy - not dirty but it looks like it. The surface has degraded a bit and it looks like the snails have given it a once over and chewed up the shiny surface.

Has anyone dealt with this successfully? What's the best approach to improving the appearance this item?
TS250/1 | Ducati 250 Mk.3 | 1960 NSU Supermax | 1946 Velocette MAC | Honda C90 | Guzzi SP1000
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Re: Plastic final drive case (TS250/1)

Postby Puffs » Sat May 21, 2022 5:20 am

Following a biased and flawed moderator choice (someone posting aggressive personal attacks is rewarded, while my technical posts are removed - behind my back & without any justification!), I have withdrawn from this forum.
Last edited by Puffs on Thu Apr 06, 2023 4:18 am, edited 1 time in total.
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Re: Plastic final drive case (TS250/1)

Postby Kruh » Sat May 21, 2022 6:53 am

You could try polishing it.
I personally haven't tried the complete procedure (sanding + polishing), but I gave mine a quick polish with a good result.
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Re: Plastic final drive case (TS250/1)

Postby Blurredman » Sat May 21, 2022 6:55 am

I'm not entirely sure the original casings were flat and shiney. The original ones I have had (long since replaced) do have a rough finish.. I suppose if you wanted you could just wet sand the whole thing flat and shiney :-)

Two of my bikes have aftermarket ones, which are a flat and shiney surface. They fit and work nicely actually- though you do need to clearance a few things to make them fit nicely.
1973 MZ ES250/2 - 17,000 miles - The project! :)
1979 Suzuki TS185ER - 9,000 miles - Mud :)
1981 Honda CX500B - 91,000 miles - Long Distance :)
1987 MZ ETZ300 - 38,000 miles - Sun :)
1989 MZ ETZ251 - 49,000 miles - Commute :)

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Re: Plastic final drive case (TS250/1)

Postby Puffs » Sun May 29, 2022 4:29 am

Following a biased and flawed moderator choice (someone posting aggressive personal attacks is rewarded, while my technical posts are removed - behind my back & without any justification!), I have withdrawn from this forum.
Last edited by Puffs on Thu Apr 06, 2023 4:18 am, edited 1 time in total.
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Re: Plastic final drive case (TS250/1)

Postby smellybeard » Fri Jun 17, 2022 9:31 am

I tried a clean up and a coat of satin lacquer but I'm not really that happy. It'll do for now.
Struggling to get those gummi hosen on just now.
TS250/1 | Ducati 250 Mk.3 | 1960 NSU Supermax | 1946 Velocette MAC | Honda C90 | Guzzi SP1000
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