Author Topic: James Booth 1843 Rectilinear Engine - Orphan  (Read 7704 times)

Online propforward

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #75 on: February 01, 2022, 02:08:50 PM »
A few simple calculations should be all that is necessary, I think it's just a matter of making a point of doing that as part of the process - assuming that drawings have been corrected over time on well established engines could catch the beginner out especially, if they just assumed the drawings were correct. It's an eye opener for me that's for sure.
Stuart

Forging ahead regardless.

Online Jo

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #76 on: February 01, 2022, 04:11:44 PM »
Did you also pick up that the 15/16" on the same crank assembly drawing does not add up to the sum of the parts if you are to get 5 thou clearance either side of the slippers? that means the central spacer should be 7/16" - 0.010" O/A length.

No I didn't find that. Horrible measurements thous and fractions  :toilet_claw:

What I have found is that the single 8BA bolt holding the top of these guides allows for a fair bit of misalignment. I was enjoying fiddling with it so much I had to come in and do some more of my cross stitch piece, which is doing better than this engine  ::)

Jo
Enjoyment is more important than achievement.

Offline bent

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #77 on: February 01, 2022, 06:02:38 PM »
Oof.  Nowt to do but press on regardless, I suppose.  :)

Offline Jasonb

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #78 on: February 01, 2022, 06:26:38 PM »

No I didn't find that. Horrible measurements thous and fractions  :toilet_claw:

Yet you seem happy to use thousandths of a metre :LittleDevil:

Online Jo

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #79 on: February 01, 2022, 06:58:54 PM »
Yes, as a retired  :wine1: engineer I still use standard engineering units for lengths: metre, millimetre (mm), micrometre (Ám) which was endorsed in the UK  before I was born  ::)

Jo
Enjoyment is more important than achievement.

Online Jo

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #80 on: May 22, 2022, 11:44:15 AM »
A quick update on this engine: actually assembling it is a nightmare and that is before you get it to turn over  :-[

A couple of pictures of where it is sitting attached. If you want a model engine build to discourage you from making further model engines this is it  :toilet_claw:  :disappointed: I'm going into negotiations for something easier that my fogged brain can cope with better.

Jo

Enjoyment is more important than achievement.

Offline Jasonb

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #81 on: May 22, 2022, 01:24:02 PM »
It's looking nice though Jo.

I seem to remember Anthony mentioning something in the articles that it was not an easy one to "turn over" by the usual spinning the flywheel as it tended to twist all the crankshaft components :'( which make sit a lot harder to track down any tight spots.

Hope you are allowed something that will see you back making swarf again :)

Offline RReid

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #82 on: May 22, 2022, 02:58:22 PM »
That is a lovely thing, Jo. Stiff upper lip and all that, you'll get there. :ThumbsUp: :praise2:
Regards,
Ron

Online Kim

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #83 on: May 22, 2022, 04:51:19 PM »
Wow! It is pretty, that's for sure.  And a LOT of little studs and nuts!  That's enough to drive anyone mad!    :ThumbsUp: :popcorn:

Kim