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Re: Regauging a 7 1/4" Minnie Project

Posted: Sun Jun 10, 2018 5:07 pm
by 10 Wheeler Rob
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.

Re: Regauging a 7 1/4" Minnie Project

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

Re: Regauging a 7 1/4" Minnie Project

Posted: Sat Aug 04, 2018 8:51 pm
by 10 Wheeler Rob
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.

Re: Regauging a 7 1/4" Minnie Project

Posted: Sat Aug 04, 2018 8:59 pm
by 10 Wheeler Rob
More pics.

Re: Regauging a 7 1/4" Minnie Project

Posted: Sat Aug 04, 2018 9:03 pm
by 10 Wheeler Rob
More pics.

Re: Regauging a 7 1/4" Minnie Project

Posted: Sat Aug 04, 2018 10:07 pm
by NP317
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

Re: Regauging a 7 1/4" Minnie Project

Posted: Sat Aug 04, 2018 10:29 pm
by steamingdon
If I know Rob those fittings are stainless not galvanized . :D

Re: Regauging a 7 1/4" Minnie Project

Posted: Sun Aug 05, 2018 4:58 am
by 10 Wheeler Rob
Yes, stainless steel pipe fittings rated for the temperature and pressure.

Re: Regauging a 7 1/4" Minnie Project

Posted: Sun Aug 05, 2018 9:19 am
by NP317
Excellent!
~RN

Re: Regauging a 7 1/4" Minnie Project

Posted: Tue Aug 07, 2018 8:11 pm
by 10 Wheeler Rob
Piped the whistle and oiler.

Re: Regauging a 7 1/4" Minnie Project

Posted: Wed Aug 08, 2018 10:59 am
by Pontiacguy1
I really like that diamond stack. How'd you fab that?

Re: Regauging a 7 1/4" Minnie Project

Posted: Wed Aug 08, 2018 4:39 pm
by 10 Wheeler Rob
The stack is an aluminum casting that came with the project. Exterior and bore for the petticoat pipe are machined.