Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Builds, Repairs, Show Your Machines! => Technical Tips, Builds, and Help => Topic started by: St Paul Steam on May 24, 2023, 08:38:04 pm

Title: Re: Jensen 20/20GW steam plant in progress
Post by: St Paul Steam on May 27, 2023, 10:15:13 am
Bruce, you have made a gorgeous SV even better than the original from the #50...your machinist skills get better and better!

Rog
Thanks Rog, this was considerably easier to make than the one I copied from the 1950's s/v, Tom Sr. Had made the design simpler.
Title: Re: Jensen 20/20GW steam plant in progress
Post by: IndianaRog on May 27, 2023, 07:58:35 am
Bruce, you have made a gorgeous SV even better than the original from the #50...your machinist skills get better and better!

Rog
Title: Re: Jensen 20/20GW steam plant in progress
Post by: St Paul Steam on May 26, 2023, 10:01:46 am
I have the S/V valve made & received back from the nickel platers. I went with a much stronger spring after realizing the 15 psi one wasn't going to cut it, now were up to 25 psi. one is an original Jensen #50 S/V with the more aggressive knurling.

(https://hosting.photobucket.com/images/z440/bruceang1/20230502_172148_(1).jpg?width=960&height=720&fit=bounds) (https://hosting.photobucket.com/images/z440/bruceang1/20230502_172148_(1).jpg?width=960&height=720&fit=bounds)
(https://hosting.photobucket.com/images/z440/bruceang1/20230525_163408_(1).jpg?width=960&height=720&fit=bounds) (https://hosting.photobucket.com/images/z440/bruceang1/20230525_163408_(1).jpg?width=960&height=720&fit=bounds)
Title: Re: Jensen 20/20GW steam plant in progress
Post by: RedRyder on May 25, 2023, 11:12:52 am
Outstanding, Bruce...!!!

Thank you for posting this on our forum and YES.... I will be following all updates!

Gil
Title: Re: Jensen 20/20GW steam plant in progress
Post by: IndianaRog on May 25, 2023, 10:36:44 am
Bruce, I am impressed with the breadth of your mods...especially love that pulley on the generator that allows basically an "idle" position.  So cool!

Rog
Title: Re: Jensen 20/20GW steam plant in progress
Post by: txlabman on May 25, 2023, 09:48:21 am

Bruce:

I have been watching your videos on this project with great interest.

I am looking forward to following your progress updates.

Charlie
Title: Re: Jensen 20/20GW steam plant in progress
Post by: Stoker on May 24, 2023, 09:21:48 pm
Unbelievable and wonderful all wrapped up in a single post!

That is certainly a load of video content, but you can be sure that I'll be watching it all when I find the time. Probably need either a bowl of popcorn or a tall cool one for this show .... maybe both!?!?
Title: Jensen 20/20GW steam plant in progress
Post by: St Paul Steam on May 24, 2023, 08:38:04 pm
Hi folks
I have been working on this plant, what I have been calling Jensen 20/20GW (working title)
This is a commissioned project (which I rarely do) with most of the parts being supplied by the customer.
If I've peeked your interest,feel welcome to follow along.
I received 3 Jensen #20's that needed the steam chest soldered back on & fully restored. Stripped bases, repainted, cross head slide cut away, an oiler installed on the cylinder & crosshead. One engine was already a single direction & I made the other one a single direction as well (they run much smoother) & fully functioning 3 ball governor (microcosm) chain driven.

https://m.youtube.com/watch?v=yH1A0SX9zo0

Here are all 3 engine's pretty much completed.

https://youtu.be/bPGz-AG9kHk
https://youtu.be/DNahcTEBiwM
https://youtu.be/olB-Hl3eATM
https://youtu.be/MRs-wsX6aRk

Twin Jensen #15 set up (forward facing)

https://youtu.be/BYzwieYECXQ

Twin Jensen #15 set up reversed & likely the way it will be mounted.

https://youtu.be/wUrpGb8Ps_A

This plant will have a 5"x 9.5" riveted boiler with Jensen factory built firebox,chimney stand & chimney. it will have a working dbl waterpump (microcosm P-71), and windmill. The final arrangement is taking shape but not set in stone yet. More to come as I make significant progress.