[modeleng] Re: Someone has to do it . . . . .

Jesse ,

I had a loco with pressed in crank pins that slipped in use, it would have 
been a big job to strip & put in grub screws  so a spot of weld  solved the 
problem, easily ground off if  necessary.

E.W.
----- Original Message ----- 
From: "JESSE LIVINGSTON" <fernj1@xxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Saturday, March 26, 2005 7:40 PM
Subject: [modeleng] Re: Someone has to do it . . . . .


> Ah Ha!
>
> Now I see where you are heading Harry.  I wonder if the British lokies 
> also
> used a tapered crank pin?  I always wondered how those valve motion cranks
> could be made tight enough to not slip at some time since they seem to be
> just clamped to the pin.  Of course with piston valves there is no real
> stress that might cause slippage, but slide valves are a different can of
> worms altogether.  Anyway, I have never had to worry with the return crank
> since my lokies all have Stephenson gear with four eccentrics, well, all 
> but
> the Filer and Stowell which has no eccentrics or valve motion at all.
>
> Now, you gonna have to put a sign on your lokie detailing the crankpin
> design or it will be totally  missed by us plebeians! [:>)
>
> Jesse
>
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