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Cox Engine of The Month
July-2024
robot797's
![](https://i.servimg.com/u/f95/15/46/86/41/3_robo10.jpg)
"ULTIMITE COX 010: it has a clutch, E starter, throttle, exhaust, aluminum tank, aluminum venturi, gearbox with forward and reverse, and now its on a custom drawn and printed stand"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
PAST WINNERS
robot797's
![](https://i.servimg.com/u/f95/15/46/86/41/3_robo10.jpg)
"ULTIMITE COX 010: it has a clutch, E starter, throttle, exhaust, aluminum tank, aluminum venturi, gearbox with forward and reverse, and now its on a custom drawn and printed stand"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
PAST WINNERS
Cox .049 heatsink question
Page 1 of 1
Cox .049 heatsink question
Was the heatsink designed to work in tandem with the "fan" on the output shaft of the worm-drives Cox put in models like their "Sand Blaster"? Will the heatsink provide adequate cooling if used alone? I have thought about using one in a marine application.. as well as on a cowled-in/inverted cylinder aircraft application.. as sort of a radiator. I could make a functional air-scoop for it.
This photo shows the popular-style car worm-drive on the left.. The drive on the right doesn't have a "fan". Maybe a higher model speed provided for ample cooling.. (once it got going...) than the lower-geared worm-drive models?
![Cox .049 heatsink question Coxhea10](https://i.servimg.com/u/f59/18/50/45/90/coxhea10.jpg)
Below/left shows my Dumas water-jacket designed for the Cox .049 engine in a marine application.. (I think it needs a longer screw...
) The 3 Cox heatsinks on the right; I purchased separately as parts.
![Cox .049 heatsink question 9-1-1410](https://i.servimg.com/u/f59/18/50/45/90/9-1-1410.jpg)
This photo shows the popular-style car worm-drive on the left.. The drive on the right doesn't have a "fan". Maybe a higher model speed provided for ample cooling.. (once it got going...) than the lower-geared worm-drive models?
![Cox .049 heatsink question Coxhea10](https://i.servimg.com/u/f59/18/50/45/90/coxhea10.jpg)
Below/left shows my Dumas water-jacket designed for the Cox .049 engine in a marine application.. (I think it needs a longer screw...
![What?](/users/3015/29/34/60/smiles/1621788659.gif)
![Cox .049 heatsink question 9-1-1410](https://i.servimg.com/u/f59/18/50/45/90/9-1-1410.jpg)
Re: Cox .049 heatsink question
Hey Roddie, here's another one.
I think this one is from a GTP Nissan
RC car. There was no fan, as the buisness end
of the engine was taken up with flywheel/clutch.
I'm thinking this heatsink was hanging out in clean
air when the car was rolling.
This set-up is where the no-fin glow head came
from(I think).
Bob
![Cox .049 heatsink question Heat_s10](https://i.servimg.com/u/f59/17/00/68/15/heat_s10.jpg)
![Cox .049 heatsink question Heat_s11](https://i.servimg.com/u/f59/17/00/68/15/heat_s11.jpg)
I think this one is from a GTP Nissan
RC car. There was no fan, as the buisness end
of the engine was taken up with flywheel/clutch.
I'm thinking this heatsink was hanging out in clean
air when the car was rolling.
This set-up is where the no-fin glow head came
from(I think).
Bob
![Cox .049 heatsink question Heat_s10](https://i.servimg.com/u/f59/17/00/68/15/heat_s10.jpg)
![Cox .049 heatsink question Heat_s11](https://i.servimg.com/u/f59/17/00/68/15/heat_s11.jpg)
dckrsn- Diamond Member
- Posts : 2750
Join date : 2010-10-21
Age : 71
Location : Long Island, New York
Re: Cox .049 heatsink question
dckrsn wrote:Hey Roddie, here's another one.
I think this one is from a GTP Nissan
RC car. There was no fan, as the buisness end
of the engine was taken up with flywheel/clutch.
I'm thinking this heatsink was hanging out in clean
air when the car was rolling.
This set-up is where the no-fin glow head came
from(I think).
Bob
You're probably right Bob.. there'd be better heat transfer to the sink, than with a finned head.
The Dumas water-jacket is almost twice the weight of the Cox cat.#1970 heatsink, but I guess; in a boat.. it doesn't matter as much.
29gr. for the water-jacket
![Cox .049 heatsink question Dsc02211](https://i.servimg.com/u/f59/18/50/45/90/dsc02211.jpg)
15gr. for the heatsink
![Cox .049 heatsink question Dsc02212](https://i.servimg.com/u/f59/18/50/45/90/dsc02212.jpg)
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