Author Topic: MEM Corliss Attempt  (Read 4218 times)

Offline Larry

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Re: MEM Corliss Attempt
« Reply #60 on: October 21, 2019, 09:21:23 PM »
GUIDE and CRANKSHAFT SUPPORT - This assembly will be fabricated in 4 parts: (1) Crankshaft Support (2) Crosshead Guide Support (3) Base (4) Valve Lever Pivot. The Crankshaft Support is machined from a piece of scrap aluminum 1/2" (.511 actual) x 1 3/8 x 4.622. The drawing shows an end cut out with square corners. I used a 1/4" end mill and left the corners with a 1/8" radius. The center cut out was chain drilled and finished with a 1/2" end mill leaving a 1/4" radius at the 3 corners. Base of center section was machined to correct dimensions.

171851065 - Crankshaft Support - 1/2" (.511 actual) x 1 3/8" x 4.622" aluminum.
9044 - Machine end cut out with 1/4" end mill leaving corners with 1/8" radius.
9045 - Chain drill center cut out.
9047 - Mill cut out with 1/2" end mill leaving 1/4" radius at 3 corners.
165511579 - Center cut out almost complete.
9051 - Machine base to correct dimensions.


Offline Larry

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Re: MEM Corliss Attempt
« Reply #61 on: October 21, 2019, 09:53:46 PM »
CRANKSHAFT SUPPORT (continued) - Drill holes on top for bearing block. Thread one hole on top #5-40, 1/4" deep. Drill two .136 (#29) holes on left for connecting Crankshaft Support to Crosshead Guide Support. C'Bore 7/32" (.218) x .150 deep. These two holes are not shown on drawing.

163112676 - Drill 2 holes on top right for bearing block.
164348332 - Thread one hole on top #5-40 , 1/4" deep.
9056 -  Drill 2 mounting holes (.136) (#29 drill) on left for connecting crankshaft support to crosshead guide support. C'Bore 7/32" (.218) x .150 deep for #5-40 SH screws.
            These 2 holes are for assembly of parts and not shown on drawing.
132328185 - (Same as above.)

Offline b.lindsey

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Re: MEM Corliss Attempt
« Reply #62 on: October 21, 2019, 11:22:23 PM »
Guess I missed a couple of updates Larry. Things are really coming along well. This one is on my list for sometime.

Bill

Offline Larry

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Re: MEM Corliss Attempt
« Reply #63 on: October 23, 2019, 02:51:41 AM »
GUIDE & CRANKSHAFT SUPPORT - (BASE) : The base was machined to size (1/8" x 7/8" x 2.563") from a piece of 1/8" aluminum flat bar. The two mounting holes (#29) (.136) were drilled per dimensions on the drawing. Three holes were drilled and CSK so the base could be attached to the bottom of the Crosshead Guide Support with #5-40 FH screws.

163836137 - Base plate (1/8"x7/8"x2.563") shown in front.
9059 - Drill 3 holes for mounting base to crosshead guide support.
9061 - Countersink 3 holes for #5-40 FH screws.
175411537 - Base attached to crosshead guide support with #5-40 FH screws.
175427884 - Assembly.
175352263 - Assembly.

Offline b.lindsey

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Re: MEM Corliss Attempt
« Reply #64 on: October 23, 2019, 02:31:35 PM »
Beautiful looking parts Larry!! Still following along.

Bill