Author Topic: James Booth 1843 Rectilinear Engine - Orphan  (Read 1952 times)

Offline Jo

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #30 on: November 09, 2021, 03:59:33 PM »
I've been drilling lots of holes in the bottom of the cylinder (not forgetting milling a bit for the port) :



And then tapping them:



Then drilling more in the top:



Then clamping the top cover on and drilling the clearance through that:



The gland has had the same done for it and I have also drilled for the cylinder lubricator.

If you recall I had only drilled the centre of the cover 4.5mm, time to ream it 4.76mm:



Trying it on the bottom plate. The holes line up  :ThumbsUp: .



But having slid on the cross head guides:



The lubricator hits the guide bottom plate :thinking:

Jo


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Offline Admiral_dk

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #31 on: November 09, 2021, 10:21:49 PM »
Very nice work Jo  :ThumbsUp:

Quote
The lubricator hits the guide bottom plate :thinking:

I would have been very surprised if something like this didn't happen from time to time on full size engines too .... one solution for a one off and another for production engines (several made).

Hard to tell - but will it clear if you 'Turn the Top' (placement of the lubricator) 90 degrees ?

Offline Jasonb

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #32 on: November 10, 2021, 07:02:25 AM »
It looks like the lubricator is not screwed all the way into the cylinder cover and also the spindle looks to be either in the fully open position or too long if it is in the closed position, both of which should lower it. Last resort take a 1/16" off the lever.

Offline Jo

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #33 on: November 10, 2021, 07:23:56 AM »
The Brass bit of the Lubricator will not go any further down as it is hitting the bottom cap.

This is where Anthony put his lubricator but I have noted that others have turned the cylinder cover 90 degrees so the handle does not catch the sliding guide blocks.

Jo
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Offline Jasonb

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #34 on: November 10, 2021, 12:46:05 PM »

This is where Anthony put his lubricator

Are you sure, looking at the photos in EiM he has it above the drain cock position. At least with the holes drilled on the DRO it won't be a problem rotating the cylinder cover 90deg.

EDIT you might also want to check the size of the bottom cap, the crosshead guides should be flush with its edge (see GA), yours sticks out suggesting they are larger.
« Last Edit: November 10, 2021, 01:01:16 PM by Jasonb »

Offline Jo

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #35 on: November 10, 2021, 03:35:43 PM »
I will be checking the dimensions of the existing bits and modifying them if required as I go  .

Jo
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Offline Jasonb

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #36 on: November 10, 2021, 04:13:23 PM »
As I said the one in the magazine has it above the drain cocks, see attached.

There is also the fact that there should be three tapped holes in the cover, one for the lubricator and two for the two dummy access covers so both the early drawing with no holes and the modified one with two holes are wrong.

Not sure if you are building to the published metric sizes or just converting the imperial but the metric bottom cap is too small and the imperial too large when compared to the GA 1 1/8" square would do nicely.

Also check the guide block flanges which should be 1/32" not the 1/16" shown on the drawings and in the book.
« Last Edit: November 10, 2021, 04:19:36 PM by Jasonb »

Offline Roger B

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Re: James Booth 1843 Rectilinear Engine - Orphan
« Reply #37 on: November 10, 2021, 08:04:22 PM »
A lot of holes and quite a few challenges  :)  :)  :praise2:  :praise2:  :wine1:
Best regards

Roger