Author Topic: The Le Rhone 9C  (Read 24912 times)

Offline Craig DeShong

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Re: The Le Rhone 9C
« Reply #465 on: May 17, 2022, 12:44:11 AM »
Kim. Ben, Per; thanks for your comments.  Thanks also for those who take the time to stop by to see the latest.

Between the Physical therapy for my knee and the reduced shop time the knee demands, progress has been slowed.  I still am getting in some shop time though.  Last week brought another wrinkle; the VFD on my mill surrendered to age and refused to deliver a reliable, constant spindle speed on the mill.

I found a replacement and purchased and installed it. I still need to set up an on/off switch at the mill (as opposed to using the start/stop function on the new VFD mounted to the wall) but that will require some step-ladder work and I’m not too keen on addressing that till the knee gets a bit better.  The on/off function on the VFD will work for now.

I show the progress below.  This is a photo of the completed gear train that will drive the cam disks.  The cam disks will attach to the center gear on top of the stack. (need to drill some mounting holes for the cam disks yet).



I also made a “false” front for the engine case.  There is a bearing in the front of the engine case that stabilizes the front of the crankshaft extension.  With a solid crankcase front it would be impossible to observe the cam disks and cam rockers to verify their operation.  I made this ‘temporary’ front for the engine so I can ‘look in’ and verify that everything is functioning as designed.

Craig
The destination motivates us toward excellence, the journey entertains us, and along the way we meet so many interesting people.

Online cnr6400

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Re: The Le Rhone 9C
« Reply #466 on: May 17, 2022, 12:49:24 AM »
Great work Craig!  :cheers:  :ThumbsUp: :ThumbsUp: :ThumbsUp: :popcorn: :popcorn: :popcorn:

Offline steamer

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Re: The Le Rhone 9C
« Reply #467 on: May 17, 2022, 12:53:27 AM »
Kim. Ben, Per; thanks for your comments.  Thanks also for those who take the time to stop by to see the latest.

Between the Physical therapy for my knee and the reduced shop time the knee demands, progress has been slowed.  I still am getting in some shop time though.  Last week brought another wrinkle; the VFD on my mill surrendered to age and refused to deliver a reliable, constant spindle speed on the mill.

I found a replacement and purchased and installed it. I still need to set up an on/off switch at the mill (as opposed to using the start/stop function on the new VFD mounted to the wall) but that will require some step-ladder work and I’m not too keen on addressing that till the knee gets a bit better.  The on/off function on the VFD will work for now.

I show the progress below.  This is a photo of the completed gear train that will drive the cam disks.  The cam disks will attach to the center gear on top of the stack. (need to drill some mounting holes for the cam disks yet).



I also made a “false” front for the engine case.  There is a bearing in the front of the engine case that stabilizes the front of the crankshaft extension.  With a solid crankcase front it would be impossible to observe the cam disks and cam rockers to verify their operation.  I made this ‘temporary’ front for the engine so I can ‘look in’ and verify that everything is functioning as designed.


I hear you about the knee Craig.   I had mine surgically reconstructed about 3 years ago....torn quad tendon....bad.....kneeling is just becoming possible, and I recently put a new sink in complete with some pipe sweating!     but it's just never going to be the same that's for sure.

The engine is coming along great!    Can't wait to hear her come to life!

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline kvom

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Re: The Le Rhone 9C
« Reply #468 on: May 17, 2022, 09:58:36 AM »
I've been told that switching at the mill can damage a VFD.  On mine, the VFD is wall mounted but has a remote control pad that I mounted on the mill.

Offline Craig DeShong

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Re: The Le Rhone 9C
« Reply #469 on: May 17, 2022, 01:23:20 PM »
Kirk

For that possible reason I’m using the controls on the VFD to start/stop the mill.  The VFD does support the facility for a remote switch I’ll mount on the mill, to control the on/off function of the VFD and that is what I’ll use when I get to it.
« Last Edit: May 17, 2022, 01:27:34 PM by Craig DeShong »
Craig
The destination motivates us toward excellence, the journey entertains us, and along the way we meet so many interesting people.

Offline bent

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Re: The Le Rhone 9C
« Reply #470 on: May 17, 2022, 07:11:17 PM »
Looking good Craig!  The false front is a good idea, I can imagine a bit of fiddling being required to get the cams/lifters/springs/followers set properly.
 :cheers:

Offline Craig DeShong

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Re: The Le Rhone 9C
« Reply #471 on: May 17, 2022, 09:14:55 PM »

Ben: we think alike.  :ThumbsUp:

Thanks for taking the time to stop by and see the latest.

A bit of progress today… somewhat hampered by having to coordinate the replacement of our washing machine… which was showing signs of wanting to puke all over the floor of the house.

Today was a day of assembly; installing the cam rockers and push/pull rods to the engine case.  I’m thinking I might take an aside here and make a cam disk without cams.  With the specified diameter, it should allow all eighteen of the rollers on the cam-followers to rest on this cam-less cam disk.   This should uncover any in consistencies in placement of the cam-followers.  If any are out of place, it should be easy to tell.  The cam-followers have to be in alignment in order for the valves to operate properly.

Craig
The destination motivates us toward excellence, the journey entertains us, and along the way we meet so many interesting people.

Offline bent

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Re: The Le Rhone 9C
« Reply #472 on: May 18, 2022, 06:10:13 PM »
 :popcorn:  Wow.   That's really coming together nicely, Craig.  I like the idea of an alignment jig/false cam.  Possibly a couple diameters?  Thinking you could also (i.e. in addition to alignment of followers) preset the rod lengths if the "cam" was sized in the neutral (all valves closed) position...then use the smaller one to verify the spring force is sufficient to...um which was it, open the exhaust?  Or intake?  Whichever.  Maybe that's too much work versus just installing the true cam next and working on timing.  Is there an adjustment for timing other than slipping the cam along one gear tooth at a time?

 :cheers: :NotWorthy:

Offline ddmckee54

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Re: The Le Rhone 9C
« Reply #473 on: May 18, 2022, 09:38:19 PM »
Craig:

Some time ago we discussed that these were push/pull rods, and that you'd probably have a lash to set in both directions.  Would it be possible to make your "cam-less" cam disc of the correct dimension that you could set the lash of all 9 of the cylinders in one of those directions at once?  Kill 2 birds with one cam-less cam?

Don