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

Builds, Repairs, Show Your Machines! => Collections & Pictures => Topic started by: Swift Fox on August 28, 2019, 09:00:12 am

Title: Re: Jensen #65 Triple Header
Post by: Swift Fox on September 02, 2019, 02:34:05 pm: Quote from: Nick
Great show Philip! And definitely an idea that I will have to steal when exhibiting at a show. You could have a full table, half a dozen engines and only have to worry about feeding two boilers. 8)

I plan to make the above display a centerpiece at the Earl Shilton Rally this year showcasing the economy of steam, which i hope will prove popular as well as educational. Look forward to see what you come up with your own display Nick.

I guess if you had an engine with either an 1" or 1 1/4" bore you could make it a quadruple expansion engine! :o :o
Title: Re: Jensen #65 Triple Header
Post by: Nick on September 02, 2019, 02:23:50 pm: Great show Philip! And definitely an idea that I will have to steal when exhibiting at a show. You could have a full table, half a dozen engines and only have to worry about feeding two boilers. 8)
Title: Re: Jensen #65 Triple Header
Post by: Jim on September 01, 2019, 07:26:35 pm: That was fun to watch Philip :)
Title: Re: Jensen #65 Triple Header
Post by: Swift Fox on September 01, 2019, 12:51:46 pm: Quote from: Stoker
In my opinion, it is really the stout boilers that set Jensens apart from any of its contemporaries!

I wholly agree there, they are the strongest toy steam boilers on the market today. They are my preferred steam source for orphan engines and work very well at that, especially when coupled with controllable gas burners.
Title: Re: Jensen #65 Triple Header
Post by: Stoker on August 31, 2019, 11:49:54 am: In my opinion, it is really the stout boilers that set Jensens apart from any of its contemporaries!
Title: Re: Jensen #65 Triple Header
Post by: Swift Fox on August 31, 2019, 11:38:02 am: The #65 is one of my favourite Jensen engines since it is very nicely proportioned and quite powerful. Certainly will give the equivalent Wilesco D10 a run for its money!
Title: Re: Jensen #65 Triple Header
Post by: IndianaRog on August 31, 2019, 10:27:48 am: Philip, that certainly made good use of all three engines. The 65 has more umph than I would have thought.

Rog
Title: Re: Jensen #65 Triple Header
Post by: txlabman on August 31, 2019, 03:19:09 am: Very cool Philip. Thanks for posting the pictures and video. Great inspiration. I will give it a try. 🤠
Title: Re: Jensen #65 Triple Header
Post by: classixs on August 31, 2019, 02:23:24 am: Fun experiment Philip, thanks for sharing :)
Title: Re: Jensen #65 Triple Header
Post by: Steamandoil (Tim) on August 30, 2019, 09:35:26 pm: That was really fun. A lot of hot breath coming out the Jensen 65! I really like those engines. Your PMR and Stuart are really nice too. Thanks for posting.
Title: Re: Jensen #65 Triple Header
Post by: Swift Fox on August 28, 2019, 10:14:35 am: I must admit i had my doubts it would actually work myself but i was delighted to have been proven wrong. The biggest challenge was warming them all up, again this is technically not a true compound as the engines were all uncoupled but it was interesting to observe the running speeds of all three and to experiment with the regulator to see how slow vs PSI all three would run.

I have to say both the Stuart & PMR will run on less that 5 PSI as both are extremely well made, which i think made a big difference given the low pressures involved.
Title: Re: Jensen #65 Triple Header
Post by: Stoker on August 28, 2019, 09:44:07 am: Seriously impressed by your demonstration here Philip.

As a guess, each of the first two engines is running somewhat slower than it otherwise would be, based on the exhaust back pressure caused by its follow on engine, as opposed to a free flowing exhaust. But you can hardly tell, as both the Jensen and the PMR seem to be running just fine. But having that Stuart ticking over nicely in third place, really tells the story of how expansive even low pressure steam really is!
Title: Re: Jensen #65 Triple Header
Post by: jkbixby on August 28, 2019, 09:13:33 am: Interesting experiment - wouldn't have thought it would work but plainly it does very well. Good fun!
Title: Jensen #65 Triple Header
Post by: Swift Fox on August 28, 2019, 09:00:12 am: I'm pleased to report success with my latest fun experiment!:

[attachimg=1]

Just goes to show how much economy you can get with 10 - 15PSI of steam in the boiler!

https://www.youtube.com/watch?v=pj1kOcRfmSE