It lives!Arnot V-2

[poodge]

Whoo-hoo!I've finished the Arnot Vtwin,and,incredibly,it runs!
I connected it to my compressor in a makeshift way,and after a little coaxing,it happily purred away.
Unfortunately one cylinder doesn't appear to sit flat on the portface,as it leaks ferociously.
But that's a matter of tweaking,I'm so chuffed to see something I made actually working.
Note the "agricultural"finish.I know it's not pretty,but I wasn't too fussed about appearance until I knew it worked:




I don't own a digital video camera,I tried taking a short video with my still camera,but it's of such poor quality,it's not worth putting it up.
Now on to the boiler.
Hans.

[bogstandard]

Very well done that man.

Hans, I know exactly how you feel, when you bring to life something that has been made out of inanimate lumps of metal. You want to run around letting the world know you have succeeded.

For your little cylinder face problem, it will be most probably one of two things.

The first is the pin sticking out of the cylinder is not square to the face, in which case, a gentle tweaking to get it square will cure it.

The favourite in my opinion, would be the big end being either drilled off square, of being forced off square. Try slackening off the locknut on the big end/piston rod joint, and see if it cures the problem. If it does, maybe a bit of fine filing on the locknut seating face will bring it back to sitting square when the nut is tightened. Otherwise it might be a hole squaring up exercise.

Well done again, and hope the grin lasts a long time.

John

[Tcat]

I am new to this site.  I am looking for a small steam engine to power a 17' canoe.  I have had an  inboard gas engine in it for about 25 years and wish to convert to steam with a v-twin oscillator.  Thinking of of about a 1 1/4" bore and stroke.  Not sure what size prop and which boiler style yet,  which is why I posted to this site.
The present engine is a 50 yr. old lawnmower engine, modified to run at about 650 rpm and drives a 7"x5" prop with a thru the hull shaft log. 

[steamboatmodel]

Hi Tcat,
You will not find many v-twin oscillators with that large a bore (1 1/4" bore and stroke) in most model work. For that size and power (17' canoe) you would be better with the Stuart Twin Launch http://www.stuartmodels.com/inprod_det.cfm/section/casting/mod_id/63
or the Stuart No.1 or the Stuart No.4 .
There have been canoes that have been steam powered
http://members.pioneer.net/~carlich/RSE/RSEfaqs.html
http://www.storerboatplans.com/Steam/Steam_Canoe.html
Regards,
Gerald