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Author Topic: Making Crank Pins  (Read 1343 times)

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mmagliaro

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Making Crank Pins
« on: March 20, 2015, 05:23:29 AM »
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On the heels of John LeMerise's need to make crank pins for a Kato Mikado for his PRR I1s project, I tested out my idea of making them by turning down some wire nails.   The short answer is I think it works great.

I did it with stainless steel #17 wire nails (because the store didn't have #19, which are thinner, requiring less turning-down).
Home Depot does have the #19, but they just didn't happen to have them at my store today.

I also made some with regular steel #19 wire nails.  It is easier to make them from these because the steel files down more easily.  I still don't think that the rods are going to wear down a steel pin, even though the rods are harder stainless.  But if you worry, then make them from stainless.

Here are some photos:









« Last Edit: July 01, 2017, 05:25:01 AM by mmagliaro »
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Iain

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Re: Making Crank Pins
« Reply #1 on: March 20, 2015, 09:37:05 AM »
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At some point I'm going to have a go at etching my own rods.  Now I know how to make the crank pins.
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Kisatchie

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Re: Making Crank Pins
« Reply #2 on: March 20, 2015, 12:51:19 PM »
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Hmm... I'd rather make
crank calls...

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Big Train

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Re: Making Crank Pins
« Reply #3 on: March 21, 2015, 11:20:25 AM »
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great idea.....

Any idea how to make the eccentric crank rod (or return rod depending with side of the pond you're on...) using this idea?

Item number 1 on this illustration:

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Big Train

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Re: Making Crank Pins
« Reply #4 on: March 21, 2015, 11:34:40 AM »
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OK lets try this again...item number 1.

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victor miranda

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Re: Making Crank Pins
« Reply #5 on: March 21, 2015, 12:53:12 PM »
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for most people. that is not a manufacturer of n-scale steam for the masses....

the eccentric crank on the main crank is aa least a two piece job

the main crank and the eccentric. since most people add a rivet at the end of the eccentric arm
there is a third piece.

when I have done this the arm is a drill job and then I solder it to the main crank
after that I glue the eccentric pin to the arm (after I put it into the arm to the valve work)

HO guys use rivets... which you can make.
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