Author Topic: Chris's Marion 91 Steam Shovel  (Read 141830 times)

Online crueby

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Re: Chris's Marion 91 Steam Shovel
« Reply #2205 on: October 08, 2018, 09:16:50 PM »
Thanks guys back home this afternoon and will be putting up my pics tonight!

 :cheers:

Online crueby

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Re: Chris's Marion 91 Steam Shovel
« Reply #2206 on: October 09, 2018, 01:15:43 AM »
Okay, I have the photos uploaded from the camera, there are a lot, and too tired to sort out a few choice ones, so I put them up on Google Photos for you to browse if interested:
 
 Kennebunkport beach pics (stopped there for lunch and a walk on the beach on the way up)
 https://photos.app.goo.gl/ucn5F8Sv6XHy4Us96
 
 General museum pics:
 https://photos.app.goo.gl/17pJJD6BGpnyYLao9
 
 Detail pics of the Lombard that I took for the Live Steam article, the editor wanted some more for general views of the subsystems:
 https://photos.app.goo.gl/3gjZCkmZge9whrreA
 
 Movies have not been uploaded yet, maybe tomorrow... Running out of steam for the evening...
 
 Chris

Offline Dave Otto

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Re: Chris's Marion 91 Steam Shovel
« Reply #2207 on: October 09, 2018, 01:16:25 AM »
Hey Chris

You look pretty good up there in the drivers seat.

Dave

Online crueby

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Re: Chris's Marion 91 Steam Shovel
« Reply #2208 on: October 09, 2018, 01:19:58 AM »
Hey Chris

You look pretty good up there in the drivers seat.

Dave
Thanks - quite an experience! I was surprised how little throttle movement it took, but it makes sense that without any load behind it that it would not take much, but still 90 HP moves 20 tons pretty easily. The Stephenson linkage was only forward one notch, so a pretty early cutoff too. It took a few hours to get steam up Saturday from a cold start, but Sunday it went pretty quick since the boiler and the water were still warm from the day before.

Online crueby

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Re: Chris's Marion 91 Steam Shovel
« Reply #2209 on: October 09, 2018, 04:10:31 PM »
And as promised, some videos from the weekend, some of other machines, then a bunch of the Lombard
 Sawmill:
 

 Sawmill gears:
 

 Waterwheel:
 

 Shingle Mill - looks like a fun one for a model!
 

 Log Splitter - made from a hit and miss engine mounted to a larger engine frame with the splitter piston:
 

 Cletrac tractor in action:
 

 Two Man Chainsaw:
 

 Lombard Coming Out Of The Barn:
 

 Lombard Setting Off:
 

 Lombard Setting Off 2:
 

 Lombard Coming Around The Bend:
 

 Lombard Backing In:
 

 Lombard Going Into Barn:
 

 Lombard Track In Motion:
 

So, as soon as I finish unpacking and getting models put back in their places, will get going on Marion gears again!
 :cheers:

Offline Farmboy

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Re: Chris's Marion 91 Steam Shovel
« Reply #2210 on: October 09, 2018, 04:29:15 PM »
Quote
So, as soon as I finish unpacking and getting models put back in their places, will get going on Marion gears again!

I should think so too! Looks like you've been having way too much fun lately  :cartwheel:  not that I'm envious, but that museum looks like a fascinating place. What a great way to spend a weekend.

Still following your progress on the Marion with increasing wonder and respect  :cheers:

Mike.


Offline Steamer5

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Re: Chris's Marion 91 Steam Shovel
« Reply #2211 on: October 09, 2018, 06:10:16 PM »
Hi Chris,
 What a great weekend adventure! Great photos & video to boot!

Cheers Kerrin
Get excited and make something!

Offline Ye-Ole Steam Dude

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Re: Chris's Marion 91 Steam Shovel
« Reply #2212 on: October 09, 2018, 06:50:03 PM »
Wow Chris,

Too much for my brain to handle at one sitting, the old wood bridge ( guessing it is a replica of an original ) is a work of art.

You need to buy a pair of overalls if you are going to operate that ole-machine and a flannel shirt.....

Have a great day,
Thomas

Online crueby

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Re: Chris's Marion 91 Steam Shovel
« Reply #2213 on: October 09, 2018, 06:58:38 PM »
Wow Chris,

Too much for my brain to handle at one sitting, the old wood bridge ( guessing it is a replica of an original ) is a work of art.

You need to buy a pair of overalls if you are going to operate that ole-machine and a flannel shirt.....

Have a great day,
Thomas
Covered bridges like that were common in New England at one time, kept the water off the beams so they lasted lots longer. This particular one is built on top of a WWII surplus pirtable bridging unit, but you can't tell without going underneath it.

Online crueby

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Re: Chris's Marion 91 Steam Shovel
« Reply #2214 on: October 09, 2018, 09:42:21 PM »
Okay, back on the Marion build!
The first few pictures below were from just before the trip but not posted.
Started out cutting the spokes in the last and largest gear as with the other gears, used the angles and distances from the 3D plans to drill the corner holes in each of the spoke openings, the outer holes are a larger diameter than the inner ones.

Then milled the outer arc, starting in from the finished dimension a bit and going back with some light cuts to take it out tangent to the drilled holes with a smooth finish.



Then came down the first inside edge of each spoke, again first in a bit then finishing with lighter cuts out tangent to the holes and a smooth finish. Repeated on the second inside edge, which freed up the central pie pieces, which will be good for something later on I am sure. The first cuts were done in a series of shallow passes, since this stock is nearly 1/2" thick.


Then came back and milled away the first side of each spoke to thin them down:

and flipped the part over to do the same on the other side:

And here is the whole family of gears for the slew, hoist, and travel gear trains, including the two small ones at the bottom which will be used on the crowd engine crankshaft to drive the big gears out on the main boom.

Now THAT deserves some cookies!

Offline Don1966

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Re: Chris's Marion 91 Steam Shovel
« Reply #2215 on: October 09, 2018, 09:56:14 PM »
Dog that is cooler then sitting on a block of ice. Some jammed up gear cutting and they all look great. Nice work Chris ........ :praise2:


 :cheers:
Don

Offline 10KPete

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Re: Chris's Marion 91 Steam Shovel
« Reply #2216 on: October 09, 2018, 11:25:16 PM »
Well, it's clear to me that Chris is the guy to go to when I need gears... :naughty:

Those are beautiful!!

Pete
Craftsman, Tinkerer, Curious Person.
Retired, finally!
SB 10K lathe, Benchmaster mill. And stuff.

Online crueby

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Re: Chris's Marion 91 Steam Shovel
« Reply #2217 on: October 10, 2018, 04:15:50 PM »
Well, it's clear to me that Chris is the guy to go to when I need gears... :naughty:

Those are beautiful!!

Pete
Great, now the shop elves are making up a catalog for gear making services... Some sample art for their catalog! 


 :Lol:

Online crueby

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Re: Chris's Marion 91 Steam Shovel
« Reply #2218 on: October 10, 2018, 04:17:51 PM »
This morning I started making up the axles for the slew gear train, here are the two axles assembled with the gears, loctite retaining compound is on and setting up...

Before I put the winding drum on for good, I need to put on some U-shaped retainers for the ends of the slew chains.

Online crueby

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Re: Chris's Marion 91 Steam Shovel
« Reply #2219 on: October 11, 2018, 07:14:25 PM »
Today I got a start on the bearing holes/caps for the slew gear train - with the two sides of the base are still bolted together and aligned, drilled and tapped the holes to hold the caps on. The caps are just rough cut to length, after drilling the shaft/bearing holes, the caps will be milled to final shape. Doing all of the holes in one assembly like this should ensure everything lines up. I hope.

The lower left cap holds the intermediate shaft, the gears on that engage in the gear on the engine crankshaft, and to the final gear. The upper/right cap holds the final gear and winding drum. The lower right cap will hold the crankshaft for the hoist engine - it will have a gear that engages the hoist gear train that sits next to this one.