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Cox Engine of The Month
I paid too much, I'm sure
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batjac- Diamond Member
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Posts : 2335
Join date : 2013-05-22
Age : 61
Location : Broken Arrow, OK, USA
Re: I paid too much, I'm sure
Pretty cool. I've been watching that (and the cage mount) on eBay. Looks like the seller has/had multiples of these.
$1.95 in 1958 has the same buying power as about $17 today. So factoring for ~62 years of preservation of a relatively low production accessory part for an early engine, still in mint condition. I'd say $40 isn't bad, just a little over double the original value, especially if you are happy with it. As close to going back to the late 50s and ordering it out of a catalog as you can get.
Are you going to keep it NIP or open it and use it?
$1.95 in 1958 has the same buying power as about $17 today. So factoring for ~62 years of preservation of a relatively low production accessory part for an early engine, still in mint condition. I'd say $40 isn't bad, just a little over double the original value, especially if you are happy with it. As close to going back to the late 50s and ordering it out of a catalog as you can get.
Are you going to keep it NIP or open it and use it?
Re: I paid too much, I'm sure
40 $ is a normal price for this rare item.
Levent Suberk- Diamond Member
- Posts : 2204
Join date : 2017-12-24
Location : Türkiye
Re: I paid too much, I'm sure
I don't understand, what switches the speeds?
jarboy- Moderate Poster
- Posts : 16
Join date : 2017-01-05
Location : Minnesota
Re: I paid too much, I'm sure
I guess the high speed valve fuel line was clipped by a timer to switch to the low speed that was open more by some turns to feed rich mixture?
https://www.mh-aerotools.de/airfoils/cox_frameset.htm
Refer to "Early engines...Thermal Hopper"
https://www.mh-aerotools.de/airfoils/cox_frameset.htm
Refer to "Early engines...Thermal Hopper"
balogh- Top Poster
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Posts : 4745
Join date : 2011-11-06
Age : 65
Location : Budapest Hungary
1/2A Nut- Top Poster
- Posts : 3426
Join date : 2013-10-20
Age : 60
Location : Brad in Texas
Re: I paid too much, I'm sure
So if I understand it correctly, the second fuel line can be opened to flood the engine, thus running slower, and pinched closed to lean it out by operating on the high-speed NVA only, is that correct? I guess you'd set your main needle for high speed with the low speed needle closed, then open the low speed needle until it reduces the speed to where you want. Then pinching the line has the same effect as closing the needle. Is that about right? Can't imagine running low speed would be so good for the fuel economy though
Oldenginerod- Top Poster
- Posts : 3970
Join date : 2012-06-15
Age : 61
Location : Drouin, Victoria
Re: I paid too much, I'm sure
If it sounds too good to be, ya'll know the rest.. However the cool dual quad factor. Who could resist!!! Mark
Mark Diedrichs- Gold Member
- Posts : 434
Join date : 2017-11-11
Age : 72
Location : fairfield ohio
Re: I paid too much, I'm sure
Oldenginerod wrote:So if I understand it correctly, the second fuel line can be opened to flood the engine, thus running slower, and pinched closed to lean it out by operating on the high-speed NVA only, is that correct? I guess you'd set your main needle for high speed with the low speed needle closed, then open the low speed needle until it reduces the speed to where you want. Then pinching the line has the same effect as closing the needle. Is that about right? Can't imagine running low speed would be so good for the fuel economy though
I'm thinking that it would have been a huge advantage primarily for final-approach/landing; being that you could now control when and where you want to land, without it being dead-stick.
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