Crosshead Securing

Crosshead Securing

This topic has 6 replies, 5 voices, and was last updated 14 November 2012 at 07:59 by michael howarth 1.

Viewing 7 posts - 1 through 7 (of 7 total)

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13 November 2012 at 20:34 #103604
Deltic007
Participant
@deltic007
Hi,

I need to secure my crossheads on 3 1/2 Lilla Loco to the piston shafts,The drawing calls for a 1/16 x 1/8 long cotter pin.

Does anyone know what this is?

I have googled and all it brings up is Split pins which obviously is no good,Does anyone think that they mean a split roll pin?

Thanks

Bit puzzled about this and don't want to make an error at this stage and scrap the crossheads.

Deltic007
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13 November 2012 at 20:34 #6440
Deltic007
Participant
@deltic007
13 November 2012 at 20:45 #103607
JasonB
Moderator
@jasonb
Think of it like a flat taper pin.

J
13 November 2012 at 21:42 #103609
Geoff Sheppard
Participant
@geoffsheppard46476
Deltic

If you can get a sight of MEW 29, you will find a reference to cotters (and proportions) in Alan Jeeves' article on Keys & Keyways (page 17). hope this helps.

Geoff
13 November 2012 at 22:36 #103615
Weary
Participant
@weary
Here are some pics and drawings that may give you an idea of the sort of thing… albeit far larger than you need!

Phil
14 November 2012 at 07:38 #103627
JasonB
Moderator
@jasonb
Now I'm back on the PC here is a section from a Fowler works drawing of the cotter arrangement that they use.
14 November 2012 at 07:59 #103629
michael howarth 1
Participant
@michaelhowarth1
If I may also ask for some advice on this thread…….I am building a Gauge 1 2-6-2 Green Arrow and the plans show no means of securing the piston rod to the crosshead. The piston rod is 1/8" diameter stainless steel and the crosshead is proportionally small. I have considered loctiting the piston rod in once it is "set up". Does this make any sense or should I drill and pin.

Mick
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