Regauging a 7 1/4" Minnie Project

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10 Wheeler Rob
Posts: 1431
Joined: Tue Mar 21, 2006 2:44 pm
Location: East Hartford, CT

Re: Regauging a 7 1/4" Minnie Project

Post by 10 Wheeler Rob » Sun Jun 10, 2018 5:07 pm

Got the brake rigging finished and assembled. Still need to make the actuation lever assembly that goes in the cab. A lot parts to with all the equalizing linkages. Going to put of designing and building the actuating lever for now, since it can be done after installing the boiler.

On to the axle pump next. Trying to get all the chassis stuff that is hard to get to with the boiler on done. Still got make ash pan and great supports, spring retainers and a draw bar pocket as well. The to do list just keeps growing.
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10 Wheeler Rob
Posts: 1431
Joined: Tue Mar 21, 2006 2:44 pm
Location: East Hartford, CT

Re: Regauging a 7 1/4" Minnie Project

Post by 10 Wheeler Rob » Wed Jun 13, 2018 4:46 pm

Finished making and installing the axle pump. Basically an Allen Models Mogal pump that mounts thru the saddle. I did leave the hex full height on the head caps. This allows the top check ball to be serviced from above the front deck, and makes getting a wrench on the bottom hex easy.

I single point cut the male threads on the lathe for the 1" housing and the end caps. Time consuming due to have an old lathe with change gears, but they came out nice. I have never had much success die cutting large diameter threads.

Rob
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10 Wheeler Rob
Posts: 1431
Joined: Tue Mar 21, 2006 2:44 pm
Location: East Hartford, CT

Re: Regauging a 7 1/4" Minnie Project

Post by 10 Wheeler Rob » Sat Aug 04, 2018 8:51 pm

Been working away this last month, but been lacy about posting the progress. Got the boiler and jacket on, some of the piping work, water glass, pressure gage, throttle valve, lubrucator, bell and domes fitted. Still a lot of piping to be finish.
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Last edited by 10 Wheeler Rob on Sat Aug 04, 2018 9:05 pm, edited 1 time in total.

10 Wheeler Rob
Posts: 1431
Joined: Tue Mar 21, 2006 2:44 pm
Location: East Hartford, CT

Re: Regauging a 7 1/4" Minnie Project

Post by 10 Wheeler Rob » Sat Aug 04, 2018 8:59 pm

More pics.
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10 Wheeler Rob
Posts: 1431
Joined: Tue Mar 21, 2006 2:44 pm
Location: East Hartford, CT

Re: Regauging a 7 1/4" Minnie Project

Post by 10 Wheeler Rob » Sat Aug 04, 2018 9:03 pm

More pics.
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NP317
Posts: 1491
Joined: Tue Jun 24, 2014 2:57 pm
Location: Northern Oregon

Re: Regauging a 7 1/4" Minnie Project

Post by NP317 » Sat Aug 04, 2018 10:07 pm

Looking good.
Be sure to use only black iron pipe fittings on pressure fittings. It looks like there are galvanized pipe and T between the boiler and the fountain.
Galvanized is considered not safe for steam operation.
~RN

steamingdon
Posts: 445
Joined: Sun Feb 22, 2009 9:21 pm
Location: massachusetts,usa

Re: Regauging a 7 1/4" Minnie Project

Post by steamingdon » Sat Aug 04, 2018 10:29 pm

If I know Rob those fittings are stainless not galvanized . :D
steamer

10 Wheeler Rob
Posts: 1431
Joined: Tue Mar 21, 2006 2:44 pm
Location: East Hartford, CT

Re: Regauging a 7 1/4" Minnie Project

Post by 10 Wheeler Rob » Sun Aug 05, 2018 4:58 am

Yes, stainless steel pipe fittings rated for the temperature and pressure.

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NP317
Posts: 1491
Joined: Tue Jun 24, 2014 2:57 pm
Location: Northern Oregon

Re: Regauging a 7 1/4" Minnie Project

Post by NP317 » Sun Aug 05, 2018 9:19 am

Excellent!
~RN

10 Wheeler Rob
Posts: 1431
Joined: Tue Mar 21, 2006 2:44 pm
Location: East Hartford, CT

Re: Regauging a 7 1/4" Minnie Project

Post by 10 Wheeler Rob » Tue Aug 07, 2018 8:11 pm

Piped the whistle and oiler.
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Pontiacguy1
Posts: 853
Joined: Thu Apr 26, 2012 10:15 am
Location: Tennessee, USA

Re: Regauging a 7 1/4" Minnie Project

Post by Pontiacguy1 » Wed Aug 08, 2018 10:59 am

I really like that diamond stack. How'd you fab that?

10 Wheeler Rob
Posts: 1431
Joined: Tue Mar 21, 2006 2:44 pm
Location: East Hartford, CT

Re: Regauging a 7 1/4" Minnie Project

Post by 10 Wheeler Rob » Wed Aug 08, 2018 4:39 pm

The stack is an aluminum casting that came with the project. Exterior and bore for the petticoat pipe are machined.

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