Author Topic: My finished Senft Poppin  (Read 997 times)

Offline PJPickard

  • Full Member
  • ****
  • Posts: 136
My finished Senft Poppin
« on: March 25, 2018, 06:30:36 PM »
As of today I am calling my Poppin complete. I started it on Jan 21st, and it first ran on March 11. Of course I have been following Brian's version! Last weekend I tore it all down to do the final finish work, polishing and bead blasting, etc.

When it was all back together do you think it ran? Hahaha, NO! And when it was first assembled, it took right off, immediately on the first spin. After some fiddling it ran well again. I made the burner yesterday. I added some rubber feet to keep it from moving around.

Another one done! It was a fun project.


Offline b.lindsey

  • Global Moderator
  • Full Member
  • *****
  • Posts: 13333
  • Dallas, NC, USA
    • Workbench-Miniatures
Re: My finished Senft Poppin
« Reply #1 on: March 25, 2018, 06:36:23 PM »
That is a fine looking Poppin and even better that its running well again. Nicely done.

Bill

Offline mklotz

  • Full Member
  • ****
  • Posts: 2399
  • LA, CA, USA
    • SOFTWARE FOR PEOPLE WHO BUILD THINGS!
Re: My finished Senft Poppin
« Reply #2 on: March 25, 2018, 06:44:51 PM »
If the top on that burner forms a seal, you may want to put a vent hole in it.  DAMHIKT.

As the burner heats, alcohol inside evaporates and starts to build pressure.  Without a vent, the pressure can force liquid alcohol up the wick tube and out onto the table where, of course, it is ignited by the flame. 

Extended running at a show without a vent allowed me to ignite the paper cover on the exhibition table.  Worse, since an alcohol flame is virtually invisible, it wasn't until my hand started burning that I noticed.  It is not one of my fondest memories.
---
Regards, Marv


Home Shop Freeware
http://www.myvirtualnetwork.com/mklotz

Offline Dave Otto

  • Full Member
  • *****
  • Posts: 3557
  • Boise, Idaho USA
    • Photo Bucket
Re: My finished Senft Poppin
« Reply #3 on: March 25, 2018, 07:09:00 PM »
Very nice Poppin!

Dave

Offline Brian Rupnow

  • Full Member
  • *****
  • Posts: 4933
  • Barrie, Ontario Canada
Re: My finished Senft Poppin
« Reply #4 on: March 25, 2018, 08:14:28 PM »
PJPickard--Hurray!!!! Nice engine, its a great day for the "Poppin" engines. i just had my first successful run too.---Brian

Offline PJPickard

  • Full Member
  • ****
  • Posts: 136
Re: My finished Senft Poppin
« Reply #5 on: March 26, 2018, 11:02:55 AM »
Thanks all! Hmmm what should I build next?

Offline b.lindsey

  • Global Moderator
  • Full Member
  • *****
  • Posts: 13333
  • Dallas, NC, USA
    • Workbench-Miniatures
Re: My finished Senft Poppin
« Reply #6 on: March 26, 2018, 11:56:04 AM »
How about a "Tiny" ? About the same size as the Poppin but IC  :thinking:

Bill

Offline PJPickard

  • Full Member
  • ****
  • Posts: 136
Re: My finished Senft Poppin
« Reply #7 on: March 27, 2018, 01:08:22 AM »
I do want to do the TINY in one of the various versions! Thanks!