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by 10 Wheeler Rob
Tue Nov 21, 2017 8:52 pm
Forum: Build Log
Topic: Regauging a 7 1/4" Minnie Project
Replies: 13
Views: 708

Re: Regauging a 7 1/4" Minnie Project

Finished making the side rods and oil cups today. Chassis rolls fine. Progress will be stoping for 5 months while I will be in Florida for the winter.

Rob
by 10 Wheeler Rob
Sun Nov 19, 2017 10:30 pm
Forum: Build Log
Topic: Regauging a 7 1/4" Minnie Project
Replies: 13
Views: 708

Re: Regauging a 7 1/4" Minnie Project

Got drivers a fixed to axles with Loctite retaining compound, mounted the cylinders and cut gaskets for cylinder heads and steam chest. The close fit between front drivers and cylinders required trimming the cylinder covers so they can be installed over the valve head and clear the wheel flange. Tri...
by 10 Wheeler Rob
Wed Nov 15, 2017 7:23 pm
Forum: Build Log
Topic: Regauging a 7 1/4" Minnie Project
Replies: 13
Views: 708

Re: Regauging a 7 1/4" Minnie Project

Today's progress, fished the valve rods, adjustor couplings, made stainless valve stems and T nuts for the valve
by 10 Wheeler Rob
Mon Nov 13, 2017 6:11 pm
Forum: General Discussion
Topic: driving a shaft with threads?
Replies: 12
Views: 405

Re: driving a shaft with threads?

You could make a coupling with threads in side it spilt one side with a ccouple of clamping bolts so its clamps on the threads to take up the thread clearance,

On second though why not due coupling with key ways,
And use the standard soft keys normally used in boats for protection of the prop.

Rob
by 10 Wheeler Rob
Mon Nov 13, 2017 5:59 pm
Forum: Live Steam
Topic: Minimum steam space between the piston and cylinder head
Replies: 12
Views: 992

Re: Minimum steam space between the piston and cylinder head

Yes I started thread in Build Log for the regauaging and completion of the locomotive.

Rob
by 10 Wheeler Rob
Mon Nov 13, 2017 5:49 pm
Forum: Build Log
Topic: Regauging a 7 1/4" Minnie Project
Replies: 13
Views: 708

Re: Regauging a 7 1/4" Minnie Project

Rest of today was spent on correcting the defencies in the Steven's valve gear links. A lot of time consuming fiddly work. Drilled and put in dowel pins on the rocker arms and lifting arms. They were just set screwed. Added oil holes to the swing links and rocker boxes. And did trial for to get posi...
by 10 Wheeler Rob
Mon Nov 13, 2017 7:54 am
Forum: Build Log
Topic: Regauging a 7 1/4" Minnie Project
Replies: 13
Views: 708

Re: Regauging a 7 1/4" Minnie Project

While I am waiting for rod material to arrive. I got the blast pipe fittings made and the inlet fittings set up in the saddle.
by 10 Wheeler Rob
Mon Nov 13, 2017 7:22 am
Forum: Build Log
Topic: Regauging a 7 1/4" Minnie Project
Replies: 13
Views: 708

Re: Regauging a 7 1/4" Minnie Project

Here's a couple of Minnie completed pictures that were on the above posted link.

I have the ballon stack from the first pic and the metal cab from the second.
by 10 Wheeler Rob
Sat Nov 11, 2017 11:32 am
Forum: Build Log
Topic: Regauging a 7 1/4" Minnie Project
Replies: 13
Views: 708

Re: Regauging a 7 1/4" Minnie Project

Daris, that's great to hear. I only got a partial set of plans with the project. So additional information will be helpful.

Rob
by 10 Wheeler Rob
Fri Nov 10, 2017 4:07 pm
Forum: Build Log
Topic: Regauging a 7 1/4" Minnie Project
Replies: 13
Views: 708

Re: Regauging a 7 1/4" Minnie Project

Today's progress.

Crank pins shortened for the regauging.

Stevenson's valve gear eccentric strap rod lengths checked. The red dimension in the picture was off by 0.041 to 0.387 inches over size. Reworked and ready to put back on when the time comes.
by 10 Wheeler Rob
Wed Nov 08, 2017 7:03 pm
Forum: Build Log
Topic: Regauging a 7 1/4" Minnie Project
Replies: 13
Views: 708

Re: Regauging a 7 1/4" Minnie Project

Painted the frame from the cab deck forward. It was now or never before driver and axle assembly. A trial fit of the drivers and old side rods came out great. Drivers roll without any binding. Also added the regauged pilot truck and trailing axle. Shorting crank pins is next to be done to work with ...
by 10 Wheeler Rob
Wed Nov 08, 2017 11:03 am
Forum: Build Log
Topic: Regauging a 7 1/4" Minnie Project
Replies: 13
Views: 708

Re: Regauging a 7 1/4" Minnie Project

Next up was removing the main driver axles and cleaning the hardened grease from the needle bearings, the project had bee stored for several years so that was expected. This is that laminated frame locomotive design so a lot screw removal to get at the bearings. The axles fits to wheels were way to ...

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