Recent Posts

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91
Your Own Design / Re: Kearsarge Windlass Engines
« Last post by crueby on March 26, 2024, 05:51:49 PM »
More cranking and the other end and sides are now to size, ready to lay out and start cutting out the openings...

Thats assuming the shop elves don't steal it for a new door on their brass vault!   :Lol:
92
Your Own Design / Re: Kearsarge Windlass Engines
« Last post by crueby on March 26, 2024, 05:49:53 PM »
Nice!  That's going to be some complex whittling!  :popcorn: :popcorn:

Hope the Elves were OK.  Don't you hate all that paperwork that comes with an on the job accident?  Tell them to be more careful next time!  And take that safety class seriously!  :Lol:

Kim
They were wearing their (not very) hard hats and their plastic toed shoes, so I am off the hook at least!   :LittleDevil:
93
Your Own Design / Re: Building a twin cylinder inline i.c. engine
« Last post by Brian Rupnow on March 26, 2024, 04:29:28 PM »
So----The engine is finished. This build has carried me thru January, February, and March. It started out as one carburetor feeding a single manifold that spanned between both cylinders. As the engine evolved, I couldn't get the single manifold spanning between both cylinders to seal properly, so the cylinders were fitted with one carburetor each and a single intake manifold each to get away from the sealing problem.  Some confusion on my part lead to having to ask for some help when setting up the individual cams on the camshaft, and I feel that I have indeed learned something new. I never was able to come up with a 12 volt coil that had dual outputs, so I "borrowed" the 12 volt coil of my dual opposed cylinder engine because I know it works.  I made a new style of gas tank based on one that Andrew Whale from the U.K. built, with glass ends and I like it very much.---I can now see at a glance if the engine has ran out of fuel or not. Only one problem remains, and that is that I can't get the damned engine to run!!  I will continue pecking away at things until I have a runner, and then I will probably post the engine drawings for sale. Although this engine was based on Malcolm Stride's engine, the Jaguar, it has a different bore, different stroke, different ignition and different lubrication system. Thank you all, readers, for following the build.---Brian Rupnow--26-March--2024

94
Your Own Design / Re: 1/5th Scale Denny Improved Ericcson
« Last post by Jasonb on March 26, 2024, 04:19:08 PM »
Thanks for the comments.

The next thing to be done was the beam that ties everything together. I started with some 2" x 1/2" aluminium flat bar and drilled & counterbored some mounting holes in it so it could be held to a machining plate. I also drilled in from the sides for some of the pivot pins while it was a nice easy shape to hold. With it then bolted down to the CNC's table I removed the majority of the waste from one side with an adaptive tool path, this leaves quite noticeable steps much like the contour lines on a map except these were ar 1mm height increments.



Changing to a 4mm diameter ball nose 4-flute cutter a "scallop" tool path was used to refine the shape, the tool stepping over 0.2mm per pass leaves very little handwork to complete.



The material was then turned over and two similar paths used to machine the opposite side.



Back to the manual mill and with a 6mm cutter the material that had been used to hold the part was separated leaving just 0.25mm thickness at the bottom of the cuts which could be cut through and the surface cleaned up with a file.



A bit of rounding over of the right hand end and that was another part crossed off the list.



The last shapely link required was the one from the end of the beam to the top of the pump rod. I milled a piece of brass to size, reamed two holes and slotted the ends manually before using a similar process to the beam to shape the ends and fish bellied central section.

95
From Plans / Re: IHC Titan 50 HP, 2 cylinder Doug Kelley, European version
« Last post by Kim on March 26, 2024, 04:18:46 PM »
Excellent run, Achim!  Glad you got the crankshaft issues worked out it seems to run beautifully now for extended periods.  :ThumbsUp: :popcorn: :ThumbsUp:

Great video. It seems to idle quite slowly too!

Kim
96
Your Own Design / Re: Kearsarge Windlass Engines
« Last post by Kim on March 26, 2024, 04:14:10 PM »
Nice!  That's going to be some complex whittling!  :popcorn: :popcorn:

Hope the Elves were OK.  Don't you hate all that paperwork that comes with an on the job accident?  Tell them to be more careful next time!  And take that safety class seriously!  :Lol:

Kim
97
Hints, Tips & Tricks / Re: 1/4” Union cones in USA
« Last post by Kim on March 26, 2024, 04:09:56 PM »
Same here.  I've only seen the olives for compression type fittings, not the solder on nipples for sale.

Hope you can find them!
Kim 
98
Vehicles & Models / Re: a newbie's take on the A3 switcher
« Last post by Kim on March 26, 2024, 04:07:21 PM »
Wow! That is quite an update, Pogo!  Lots of good progress!  :ThumbsUp: :popcorn:

I think your truck (boogie) runs well.  A little oil on the bearings would probably help it some.  But I wouldn't bother with that till after you've painted things.  Oil always causes problems for paint  :Lol:

Kim
99
From Plans / Re: IHC Titan 50 HP, 2 cylinder Doug Kelley, European version
« Last post by sid pileski on March 26, 2024, 03:59:26 PM »
Congratulations on a very successful build and run!
Beautiful craftsmanship all around.

What's next?

Sid 
100
Your Own Design / Re: Kearsarge Windlass Engines
« Last post by crueby on March 26, 2024, 03:23:54 PM »
Work on the engine bed has begun. The shop elves took the larger bar up to the band saw for me, and brought back this blank for the engine bed...

One of them sneezed before they got it upright on the bench though... 


 :facepalm:

I clamped the base piece (shown in the previous post) to the blank and used it as a drill guide to start the mounting holes down each side, then removed the base and drilled through with a close clearance size drill. The base was bolted back down to the mill table, and the bed blank screwed down on that with a piece of 1/8" plywood between so I can mill/drill through the bed without damaging the base. I milled the right hand end (which will be at the bow end) true, and the correct distance from the mounting hole in the front right corner (which will become the reference point for the rest of the part). Next I'll mill the other end to length relative to that, then take the sides in to final size....

Once the outsides are all shaped, I'll lay out and cut the two large openings in the middle.  This is what it will eventually look like:



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