Rob Roy stretchers

This topic has 7 replies, 3 voices, and was last updated 8 June 2014 at 21:10 by Ian Horsfield 1.

Viewing 8 posts - 1 through 8 (of 8 total)

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7 May 2014 at 19:57 #7149
Ian Horsfield 1
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@ianhorsfield1
Help from those who have made this loco
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7 May 2014 at 19:57 #151754
Ian Horsfield 1
Participant
@ianhorsfield1
Not long started a Rob roy but need confidence in design of one of the stretchers. The drawing show a semi-circular cut and one of the books shows U cut out. Which is best and I assume the cut out is on the off-side of the engine. Please can you assist?

Ian.
7 May 2014 at 20:58 #151761
AndyP
Participant
@andyp13730
If you mean the cut out in the rear stretcher for the boiler blowdown valve then mine is U shaped about 7/16 deep and 7/8 wide. It is on the left hand side of the engine looking forwards.

Whilst thinking about stretchers I had to mill pockets in the underside of the large central stretcher to clear the eccentric straps but that might be my slightly agricultural straps.

Andy
8 May 2014 at 08:22 #151791
Ian Horsfield 1
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@ianhorsfield1
Many thanks Andy, that answers my questions and I shall investigate clearance for the eccentrics. Ian
7 June 2014 at 17:09 #154681
Ian Horsfield 1
Participant
@ianhorsfield1
Forgot to ask if the u shaped cut out on the Rob Roy stretcher is on the top edge or bottom edge. The cut out is apparently on the left side looking forward. Can you clarify before I get cutting and fixing.

Regards

ian h.
8 June 2014 at 12:57 #154761
Phil H 1
Participant
@philh1
Ian,

I haven't assembled my frames but I have the Rob Roy book which seems to indicate the top edge for the cut out. If you look at the drawing showing the boiler backhead – you should see the blowdown valve which would clash with the top left hand side of the vertical stretcher as you look forwards.

PhilH
8 June 2014 at 13:24 #154762
AndyP
Participant
@andyp13730
I concur, top edge.

Andy
8 June 2014 at 21:10 #154807
Ian Horsfield 1
Participant
@ianhorsfield1
Thanks Phil and Andy. It was well worth checking before assembly.

Ian.
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Rob Roy stretchers

Rob Roy stretchers

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