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MARINER; drawing correction

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Diane Carney10/08/2016 22:18:18
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397 forum posts
10 photos

Chris Walter has submitted a redrawn Fig 27 (M.E. issue 4540) after it was pointed out that:

  • "the valve eccentric OD is shown as 1 1/16" but on page 253 the eccentric strap is shown as having a bore of 1" with a brass sleeve bringing the ID to 15/16".

Chris replies:

  • "The reader is quite right in stating that their is a discrepancy. My fault entirely as the drawing of the straps shows two wrong dimensions. I had not updated these when redesigning the straps after increasing the diameter of the eccentrics.
    The dims affected are the ineternal bore of the eccentric and its bush.
    As the eccentric is correct this will not affect the part [he has] already finished.
    All the other dimensions on the straps remain the same so the fix will be to bore the straps to the new dimension and make larger bearing bushes to match, if he has got passed this stage

A new drawing to replace fig 27 can be found here:
**LINK**

Ulf-Goran Solving17/08/2016 11:49:31
2 forum posts

Hi there

ulf-g@telia.com says: I am sorry to say that the link in Chris reply can not be open. An other thing: I can not find the mesurment between center of eccentric to center of crankshaft.

Regards

JasonB17/08/2016 12:17:03
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Welcome to the Forum

 

I have asked Diane to sort out the link.

There is a note in Fig 26 that the eccentric throw is 1/2in, looking at the proportions I would say that is total throw so the hole should be offset 1/4" from centre.

Edited By JasonB on 17/08/2016 12:17:13

JasonB17/08/2016 13:20:54
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Temporary link to the revised drawing here until we can get it hosted on this website.

Ulf-Goran Solving17/08/2016 13:55:38
2 forum posts

Regards

Ulf-Goran SolvingThank you very much for a very promt answer.

Neil Wyatt17/08/2016 17:47:34
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Image was too low-res, here's a pdf:

www.model-engineer.co.uk/sites/7/documents/mariner1.pdf

Neil

Edited By Neil Wyatt on 17/08/2016 17:54:28

Edited By Neil Wyatt on 17/08/2016 20:52:08

JES16/05/2017 16:45:26
67 forum posts
48 photos

Is there a layout drawing for the valve gear, I am having difficulty in seeing how it works from the photos ?

JES

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