Rail polish

Rail polish

Postby Hairybiker59 » Sat Dec 09, 2017 11:12 pm

I’m going to polish the rail on my s410...after polishing should it be run dry or is a little oil needed...should the inside of the hammer be cleaned too?
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Re: Rail polish

Postby Roger5 » Sat Dec 09, 2017 11:27 pm

Hairybiker59 wrote:I’m going to polish the rail on my s410...after polishing should it be run dry or is a little oil needed...should the inside of the hammer be cleaned too?

I always leave it dry, and just pull clean rag through the hammer. Rog
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Re: Rail polish

Postby TenMetrePeter » Sun Dec 10, 2017 8:35 am

Agreed. Any liquid oil on the hammer rail, particularly silicone, will slow down the hammer dramatically. Hammer rails should be dry.
The science - frictional (dry) drag between two surfaces is independent of velocity. Viscous (oily) drag is proportional to the square of velocity. So a viscous oil will limit to a terminal velocity quickly, in this case before it hits the valve. Useful for slow close toilet seats but not hammer rails.
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Re: Rail polish

Postby Blackbaronfish » Sun Dec 10, 2017 10:05 am

Some leave it dry with no oil and some use GT40 type lube that isn’t sticky and is wiped on then buffed off. GT40 is used on bike chains that doesn’t want to attract dirt

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