rainedave

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Hi. Has anyone here had any experience with this type of Cox throttle? It reminds me of one that was presented here on the forum a while back in that it uses a barrel with an opening that rotates inside a larger tube, sort of the way a carb barrel operates. Sorry I can't remember who developed the one shown here on the forum. Anyway, it looks like a simple solution to the throttling problem, though I have no idea how well it worked.

SGC

rainedav,
I beleive they were push/pull not rotateing, and also had a rotating barrel fitted in the venturie- only seen pictures myself. heres another shot.
Stewart

rainedave

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Ok, I saw the throttle arm and just assumed that the barrel rotated like an r/c carb barrel. I see now how it worked. Thanks.

mapnet

Similar to a ROTO-VALVE exhaust throttle I had on a FOX 15 powered Live Wire Trainer (1959).
It was a single channel rudder only ship with "Quick Blip Hi-Lo"engine control.
All control was by rubber band powered escapements.

Maurice

rainedave

My Feedback: (1)

Ah, it was David Fritzke who was working on the tube-within-a-tube throttle. I couldn't remember at the time of my post:

http://www.rcuniverse.com/forum/m_28...tm.htm#2874106

When I saw that old Cox throttle I thought it worked on the same principle. Similar, but one rotates and the other slides.

indoorff

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rainedav - I have a cox engine with that exact throttle set up. It seems to work great, I don't have any numbers, but is does idle down amazingly well. My uncle gave it to me, he does not remember the details as he bought it when he was a kid.

Chris