Log in
Search
Latest topics
» Nostalgia alert, my 1959 Corvette revisitedby rsv1cox Today at 12:18 pm
» audio-tach anyone?
by roddie Today at 11:14 am
» Jim Walkers FireBee - This is going to be fun
by rdw777 Today at 10:22 am
» Prayers for my Wife Please
by fit90 Today at 7:34 am
» Prop Rod - resto to a runner
by getback Today at 6:19 am
» WenMac 049 - Glow Plug & Head Gasket replacements?
by Ken Cook Yesterday at 7:50 pm
» 12 string guitar suggestions
by akjgardner Yesterday at 7:08 pm
» A choke-tube with velocity-stack configured Bee
by roddie Yesterday at 2:54 pm
» Hawk had breakfast and then took a bath
by rsv1cox Yesterday at 10:26 am
» Jim Walker Firebaby
by rdw777 Sat May 18, 2024 4:58 pm
» Cox prop rod
by Wiggy Fri May 17, 2024 4:30 pm
» "Red Neck" .049 elec. starter
by getback Fri May 17, 2024 7:19 am
**VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (February 2020)
Page 2 of 2
Page 2 of 2 • 1, 2
Choose the next engine of the month!
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (February 2020)
A simple escapement was wired in to the receiver circuitry be actuated by "quick blip". A tap of the momentary switch or "key" would trigger this escapement to go full throttle / part (or low) throttle. It was "bang, bang", "low, high", "high, low"".
You'll notice a number of earlier engines to include the Fox, OS, Enya, that had a two needle setup.
In the escapement driven engine era, the OS Pet .099 had a carburetor similar to the post Cox manufacturing era choke tube carburetor, where it reduced airflow. Here's a photo of such OS Pet. It is not my photo, found somewhere along the way may be even from the OS website. It is the steel fin Pet. One I have is the later aluminum fin steel sleeve Pet.
You'll notice a number of earlier engines to include the Fox, OS, Enya, that had a two needle setup.
In the escapement driven engine era, the OS Pet .099 had a carburetor similar to the post Cox manufacturing era choke tube carburetor, where it reduced airflow. Here's a photo of such OS Pet. It is not my photo, found somewhere along the way may be even from the OS website. It is the steel fin Pet. One I have is the later aluminum fin steel sleeve Pet.
GallopingGhostler- Top Poster
-
Posts : 5350
Join date : 2013-07-13
Age : 70
Location : Clovis NM or NFL KC Chiefs
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (February 2020)
Thanks guys for the explanation. I learn something new every day here.
Dave P.- Gold Member
- Posts : 477
Join date : 2017-07-31
Age : 66
Location : Durham, NC
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (February 2020)
The question was asked on how one would switch fuel from high speed needle to low speed needle. This of course was before my time, because I was born when the Fox .59 twin needle came out.
Where obtained: AMA: History of Model Engines
This was one year after Hal DeBolt debuted his 34" half-A Livewire Kitten. Drawing shows tube (valve) super-regenerative receivers being used, with 45 to 67.5 Volt B+ tube supply voltage and 1.5 to 3 Volt tube filament heater batteries. (Plan can be downloaded from Outerzone.)
Can you imagine a radio controlled plane with a 6 foot wingspan flown rudder only by escapement with a Fox .59 twin needle on auxiliary quick blip throttle with the power of a modern .40 - .45 plain bearing Sport Schneurle on a primitive tube radio set?
I recall seeing photos of the fuel valves that was escapement or servo operated, allowed fuel to be directed to the high speed or low speed needle. For example, OS made one. The modern R/C carburettor did away with this. However, such photos evade me for the moment.
Perhaps someone may have a photo of one from their archives to share?
Where obtained: AMA: History of Model Engines
This was one year after Hal DeBolt debuted his 34" half-A Livewire Kitten. Drawing shows tube (valve) super-regenerative receivers being used, with 45 to 67.5 Volt B+ tube supply voltage and 1.5 to 3 Volt tube filament heater batteries. (Plan can be downloaded from Outerzone.)
Can you imagine a radio controlled plane with a 6 foot wingspan flown rudder only by escapement with a Fox .59 twin needle on auxiliary quick blip throttle with the power of a modern .40 - .45 plain bearing Sport Schneurle on a primitive tube radio set?
I recall seeing photos of the fuel valves that was escapement or servo operated, allowed fuel to be directed to the high speed or low speed needle. For example, OS made one. The modern R/C carburettor did away with this. However, such photos evade me for the moment.
Perhaps someone may have a photo of one from their archives to share?
GallopingGhostler- Top Poster
-
Posts : 5350
Join date : 2013-07-13
Age : 70
Location : Clovis NM or NFL KC Chiefs
Page 2 of 2 • 1, 2
Similar topics
» *Cox Engine of The Month* Submit your pictures! -February 2020-
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (February 2015)
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (February 2019)
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (February 2017)
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (February 2018)
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (February 2015)
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (February 2019)
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (February 2017)
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (February 2018)
Page 2 of 2
Permissions in this forum:
You cannot reply to topics in this forum