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

The Regular Stuff: Chat, Buy, Sell, Off Topic, etc. => General Discussion - Model & Toy Steam Engines – Stirling Cycle – Flame Lickers – Small Antique Originals => Topic started by: B-Train on March 18, 2019, 01:12:26 pm

Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: RedRyder on March 22, 2019, 08:19:38 pm: I have always liked these engines.

It isn't very easy to find a good one for sale like you have shown above. Many will not run.

It is a 6 cylinder engine with only 5 moving parts..!

Very clever design.

Gil
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: Nick on March 20, 2019, 12:58:13 am: There's one at a show I go to every year and I love watching it, but your slow-motion video made it even better 8)
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: B-Train on March 19, 2019, 08:29:59 pm: Cool! I like it a lot myself, i'm very happy that you like it too !
Is someone know if that design was used on real thing or if it is only an engineer/hobbyist affair ?
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: Mi Steam on March 19, 2019, 03:44:46 pm: Sure is a different type of engine and I like it.
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: classixs on March 19, 2019, 10:26:37 am: That sure is a little beaut that one...

Never seen one of these running either, thank you so much for sharing !
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: jerseysteam on March 19, 2019, 07:09:15 am: Neat! Thanks for sharing.
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: crazydoug on March 19, 2019, 06:55:25 am: very unique. I had never seen one before either!
Thanks for the slo motion video
crazydoug
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: B-Train on March 19, 2019, 03:58:57 am: Quote from: Hero on March 19, 2019, 02:11:48 am
Nicely made.

For those of you who need one, here are the plans:

https://books.google.ca/books?id=P-MDAAAAMBAJ&pg=PA182&lpg=PA182&dq=elbow+engine+popular+mechanics&source=bl&ots=PWqZroLIP2&sig=ACfU3U2mXq215lm5KmdOwqNn6OQFzObFFA&hl=en&sa=X&ved=2ahUKEwjp-se-0o3hAhWjyoMKHe8tA-gQ6AEwDXoECAgQAQ#v=onepage&q=elbow%20engine%20popular%20mechanics&f=false

Or on the john-tom's page for a pdf file of the same article: http://www.john-tom.com/MyPlans/Steam%20Engines/ElbowEngine.pdf
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: Hero on March 19, 2019, 02:11:48 am: Nicely made.

For those of you who need one, here are the plans:

https://books.google.ca/books?id=P-MDAAAAMBAJ&pg=PA182&lpg=PA182&dq=elbow+engine+popular+mechanics&source=bl&ots=PWqZroLIP2&sig=ACfU3U2mXq215lm5KmdOwqNn6OQFzObFFA&hl=en&sa=X&ved=2ahUKEwjp-se-0o3hAhWjyoMKHe8tA-gQ6AEwDXoECAgQAQ#v=onepage&q=elbow%20engine%20popular%20mechanics&f=false
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: SlowArrow on March 19, 2019, 01:59:10 am: Thanks for sharing! That really is a unique engine design.
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: B-Train on March 18, 2019, 07:58:45 pm: Quote from: St Paul Steam on March 18, 2019, 06:50:50 pm
Daniel you are right, I have had two of those, one ran really well and the other one I couldn't get to run despite working on it for 6 hours.ö
the one above runs really nicely.
It is but have an air leak between the wheel and the frame. I will try to improve it soon and let you know!
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: St Paul Steam on March 18, 2019, 06:50:50 pm: Quote from: Stoker on March 18, 2019, 05:22:02 pm
From what I've seen of them, they can be really finicky to run and don't have a lot of power which they actually do need to overcome their less than efficient geometry. Really easy to build them with a bit of bind in the system, so tolerances are best kept a bit on the loose side, which again makes them often be a bit weak when running.

A really good machinist, who sets them up square and with proper tolerancing, can make a good one that runs very well. Seems that may be the case with this one here!

NICE !!!
Daniel you are right, I have had two of those, one ran really well and the other one I couldn't get to run despite working on it for 6 hours.ö
the one above runs really nicely.
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: Stoker on March 18, 2019, 05:22:02 pm: From what I've seen of them, they can be really finicky to run and don't have a lot of power which they actually do need to overcome their less than efficient geometry. Really easy to build them with a bit of bind in the system, so tolerances are best kept a bit on the loose side, which again makes them often be a bit weak when running.

A really good machinist, who sets them up square and with proper tolerancing, can make a good one that runs very well. Seems that may be the case with this one here!

NICE !!!
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: Jim on March 18, 2019, 05:14:43 pm: WOW....never seen anything like that before......absolutely fascinating to view.
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: IndianaRog on March 18, 2019, 04:36:24 pm: What a fascinating design...seems to work beautifully !

Rog
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: jkbixby on March 18, 2019, 04:26:15 pm: I'm with Benny in never having seen one before - quite interesting to say the least. I probably wouldn't have even known how it functioned if not for the slow motion - thanks for sharing.
Title: Re: Latest acquisition, An elbow engine! (with slow motion)
Post by: Dr.Rev.DelmarMacReady on March 18, 2019, 02:19:59 pm: I have never seen this design before. Very interesting and fascinating to watch the slow motion captures.
Wonderful addition to the collection!
Title: Latest acquisition, An elbow engine! (with slow motion)
Post by: B-Train on March 18, 2019, 01:12:26 pm: Hi! That elbow engine is my latest acquisition. Pretty happy about it since it's a bit rare and hard to make (at least for me ;))
It was make by Claude St-Laurent in the 70's, a Quebec machinist who's also made many 7 1/4" gauge locomotive...
Need some lapping and "regasketing", but run well!

Hope it will please you!

https://youtu.be/rbre-6n4RZI