Crosshead Securing

[Deltic007Participant @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

[Deltic007Participant @deltic007]

[JasonBModerator @jasonb]

Think of it like a flat taper pin.

J

[Geoff SheppardParticipant @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

[WearyParticipant @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

[JasonBModerator @jasonb]

Now I'm back on the PC here is a section from a Fowler works drawing of the cotter arrangement that they use.

[michael howarth 1Participant @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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