Cox Engines Forum
You are not logged in! Please login or register! Guests are limited to posting in the "General Questions (Guest Posting Allowed)" section only. Becoming a member is fast, easy and FREE!

Push button stooge - Page 2 Babe_b10
Log in

I forgot my password


Display results as :

Rechercher Advanced Search

Latest topics
» our forum family album
by aspeed Today at 10:52 pm

» Snip 1/2A Combat plan
by batjac Today at 10:09 pm

» music vids.. some of your favorites
by Dave P. Today at 10:05 pm

» Willy Nillies Cub 250
by Tee Bee Today at 8:42 pm

» Happy birthday batjac!!
by davidll1984 Today at 8:39 pm

» Crushed Bee
by Cribbs74 Today at 8:33 pm

» need info wit strange back plate from 049 bee jet nedle
by davidll1984 Today at 8:05 pm

» Remember this ?
by OhBee Today at 6:49 pm

» Wanted Cox Pitts Special Parts
by Burd Today at 6:49 pm

» Aluminium backplates
by roddie Today at 5:30 pm

Cox Engine of The Month
Dave P.'s

"Tee Dee .051"

CEF Traveling Engine

Win This Engine!

Push button stooge - Page 2 Empty

Push button stooge

Page 2 of 2 Previous  1, 2

Go down

Push button stooge - Page 2 Empty Re: Push button stooge

Post  Slick049 on Wed Mar 06, 2019 10:03 am

So, lots of changes in the design.  I had gone through a couple or three iterations of the original set up and was never satisfied with the action of the attendant components.  Upgrading to the 12V battery sent me back to the drawing board.  No more bellcrank, for starters.  Focused on direct throw, if that makes sense, and how to make that work.  The short throw of the solenoid piston really limited my options.  Found some alum. channel that was practical and went from there.  Then had to deal with capturing/containing the solenoid piston.  Getting the geometry right, up/down, side/side, length and so on.  FINALLY came down to this:

Push button stooge - Page 2 Stooge18
Firstly, the remote receiver is contained in a handy dandy bullet tray.  Not sure if blow back fuel would corrupt it's electronics but settled on this box to protect it and the wiring connections.

Push button stooge - Page 2 Stooge19

Soldered a washer to a piece of tubing that just fit over the rivet head "guide tube" to act as a stop for the solenoid piston.  Placement of the solenoid, relative to the launch channel was critical, as might be expected.  A very intolerant, close enough, fit with those components.  Made use of double backed tape for easier adjustments.

Push button stooge - Page 2 Stooge20

Push button stooge - Page 2 Stooge21

Assorted contraptions, including springs and not, were tried in an attempt to "arm" the catch pin.  Ended up crafting a piece of wire that sticks out enough to grab and use to slide to piston/pin to and fro.  Seems to work the best.  So far.

Push button stooge - Page 2 Stooge22

Again, considering the blow back fuel, I figured it'd be best to protect the solenoid and contraption as much as possible.  Found a divider, in its protective bubble pack that fit like it was made for it.  Just enough to keep the bulk of contaminants from reaching the working parts and low enough to fit under the horizontal stab of any airplane I might need to launch.  A little trimming and fitting and VOILA!

Push button stooge - Page 2 Stooge23

Closing in on finishing a Brodak P-51. A couple more coats of dope, some Monokote, and I'll be ready to test out my stooge.
Moderate Poster
Moderate Poster

Posts : 25
Join date : 2018-12-26

Back to top Go down

Push button stooge - Page 2 Empty Re: Push button stooge

Post  944_Jim on Wed Mar 06, 2019 3:22 pm

I like that iteration! I was thinking of the same idea, and using the bullet connectors to the power panelnon my field box for more "oomph!"

My concern is the side load on the pin when the plane is pulling on it. The solenoid has to overcome this friction.

The action only needs to move the retaining ounce enough to allow the tail skid to pull clear. So I've been thinking of using a bellcrank to decrease throw, but increase the pin-pull of the solenoid. I'm thinking close to 2:1 gives twice as much pull for 1/2 as much throw.

Over on RCG or SH a guy used a door pull solenoid with sear-safety latches activated by the same receiver you used.

I will continue to watch in anticipation.

Thanks for the updates!

Platinum Member
Platinum Member

2019 Supporter

Posts : 715
Join date : 2017-02-08
Age : 55

Back to top Go down

Push button stooge - Page 2 Empty Re: Push button stooge

Post  getback on Thu Mar 07, 2019 7:53 am

Thats looking good and so is your plane that looks kinda like a stuntman 23 , all but the wing area . This push button would work good for two wanting to fly some comat (fun) , the only drawback is the batt. i have a1 field bow but would need a smaller setup for another ,, i use 4" alum. spikes to hold mine (stooge) in place , drill 3 holes and push the stakes through to the ground . Hope you get to try it soon keep us updated . Very Happy This Site Rocks!
Top Poster
Top Poster

2019 Supporter

2020 Supporter

Posts : 6755
Join date : 2013-01-18
Age : 62
Location : julian

Back to top Go down

Push button stooge - Page 2 Empty Re: Push button stooge

Post  Sponsored content

Sponsored content

Back to top Go down

Page 2 of 2 Previous  1, 2

Back to top

Permissions in this forum:
You cannot reply to topics in this forum