Office of Steam Logo_1

Author Topic: 5-cyl Radial  (Read 469 times)

Hero

  • Sr. Member
  • ****
  • Posts: 1008
  • Location: Ontario, Canada
5-cyl Radial
« on: March 10, 2019, 02:37:22 pm »
Just to help populate this area of the forum, here's a model radial aircraft engine. I can't take credit for building it, but I do congratulate myself for finding it in a basement last summer.
Bob

Hero

  • Sr. Member
  • ****
  • Posts: 1008
  • Location: Ontario, Canada
Re: 5-cyl Radial
« Reply #1 on: March 10, 2019, 02:38:15 pm »
Oops! No attachment! I'll try again...
Bob

Hero

  • Sr. Member
  • ****
  • Posts: 1008
  • Location: Ontario, Canada
Re: 5-cyl Radial
« Reply #2 on: March 10, 2019, 02:40:42 pm »
If I ever figure out the attachments. I'll add one😂

All right, here it is, I think. [ Guests cannot view attachments ]
Bob

crazydoug

  • Full Member
  • ***
  • Posts: 805
Re: 5-cyl Radial
« Reply #3 on: March 10, 2019, 10:51:40 pm »
Would love too see a video of that running!
crazydoug

St Paul Steam

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4831
  • Location: St. Paul Indiana
Re: 5-cyl Radial
« Reply #4 on: March 11, 2019, 08:43:42 pm »
Would love too see a video of that running!
c the value of 25%
Ditto , that is lovely 😊
Bruce, St. Paul Indiana, USA
"Originality thrives in seclusion free of outside influences beating upon us to cripple the creative mind."
  Nikola Tesla

Hero

  • Sr. Member
  • ****
  • Posts: 1008
  • Location: Ontario, Canada
Re: 5-cyl Radial
« Reply #5 on: March 11, 2019, 08:50:30 pm »
I hope to give it a try this summer. I am worried about the danger inherent in the propeller, though (I have a full-size one for it).
Bob

Adirondack Jack

  • Jr. Member
  • **
  • Posts: 277
Re: 5-cyl Radial
« Reply #6 on: November 26, 2020, 05:57:11 pm »
Oddly enough, the big RC airplane props aren’t usually a problem.  It’s the little nylon ones that can cut the hell out of you.
For. The big ones, up to and including four to six horse engines, most guys just wear a work glove in case the prop comes around and smacks the back of their hands. But physics and geometry being rather inflexible, it takes a moment for the bigger, heavier props with a larger swept area to come around that first time.  You learn to do just as the fliers up to and including piper Cubs did.  You flip the prop while standing back away from it just a tad, so as you follow through with your arm swing, your hand naturally arcs out of the plane of prop rotation. 
All that said, flipping a 24 inch prop on a six horse motor with a hot battery ignition and timing fully retarded is no time to be napping.  They come alive almost invariably on the first flip, and are fully capable of breaking metacarpals.  I’ve been bit on a gloved hand, but never seriously injured.

Just make sure the engine is firmly secured so it can’t move, and flip the prop like you mean it, follow through so your hand approaches your leg after it leaves the prop, and don’t get stupid and reach through a running prop.   

Hero

  • Sr. Member
  • ****
  • Posts: 1008
  • Location: Ontario, Canada
Re: 5-cyl Radial
« Reply #7 on: November 26, 2020, 07:11:57 pm »
I'm ashamed to admit that I chickened out last summer, so I will have to wait until this winter's snow has gone before I try again.
Bob