Author Topic: I need the pilot screw size for a MP 2-8-2  (Read 534 times)

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Paradise275

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I need the pilot screw size for a MP 2-8-2
« on: September 09, 2014, 04:16:03 PM »
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I've lost the screw that holds the pilot to the frame on a Model Power 2-8-2. Does anyone know where to get one or do you know the size of the screw required.

Thanks

Rick

Altoona

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Re: I need the pilot screw size for a MP 2-8-2
« Reply #1 on: September 09, 2014, 11:05:48 PM »
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MRC is suppose to have their act together on the Model Power parts by mid-October you might have to wait until then to get a replacement.  :(

Judd 

peteski

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Re: I need the pilot screw size for a MP 2-8-2
« Reply #2 on: September 09, 2014, 11:57:54 PM »
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...and it is most likely a metric size screw.
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mmagliaro

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Re: I need the pilot screw size for a MP 2-8-2
« Reply #3 on: September 10, 2014, 12:16:01 AM »
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...and it is most likely a metric size screw.

Yes, if I had to guess, I would say an M2.0.  It is also a shoulder screw, which is going to make it very tricky to replace if you can't get one from Model Power and you don't have a stash of them from other engines lying around.  If I knew exactly the length and diameter of the
screw and the shoulder, I could hunt around and see what I have for you.  But I don't own a 2-8-2.

You could start by getting yourself some M1.0, 1.2, 1.4, 1.6 and 2.0 screws and testing to see what fits the thread.  (That is, unless somebody in here has a 2-8-2 and can do that for you).

Paradise275

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Re: I need the pilot screw size for a MP 2-8-2
« Reply #4 on: September 10, 2014, 11:14:24 AM »
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Thanks for the info Guys.
I called MRC and they gave me this name as a source for repair.

 http://kensengineandsteamrepair.com/
In up state New York in Batavia.
Rick

mmagliaro

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Re: I need the pilot screw size for a MP 2-8-2
« Reply #5 on: September 10, 2014, 01:31:48 PM »
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I have a 4-6-2, but no 2-8-2.

Assuming it is the same screw they used in the 4-6-2:

It is a flat-head, M1.4, shoulder screw

Total Length:  11.6 mm
Shoulder length: 5.25 mm
Shoulder diameter: 2 mm
Head diameter: 3 mm

I have a lot of shoulder screws, but nothing like this.  If I were you, I'd just get an M1.4 screw about 1/2" long, and slip a sort bit
of brass tube over it to create the larger smooth shoulder part by the head.