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Cox Engine of The Month
May-2023
sosam117's

"Pre-1956 Thermal Hopper -- cleaned and completely rebuilt."



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Post  Tobaiies Sun May 07, 2023 2:12 pm

Like my first Cox a few years ago, I have now found my first CO2 engine in our basement. CO2 Gasparin GM120 Img_6610
My father probably bought it about 25 years ago, before I even existed. Wink
I figured I'd have to give this one a try too, maybe it'll be just as fun as a Cox. Smile
It was exciting to see that exactly these engines are still being produced!

That's why I looked around for a suitable model and ordered the right CO2 cartridges.

I found the 1979 Puffin on Outerzone. It has a wingspan of 24 inches.
CO2 Gasparin GM120 Img_6612
CO2 Gasparin GM120 Img_6613CO2 Gasparin GM120 Img_6614
At the moment the wing is finished, and in a few days I should be able to run the engine for the first time.
CO2 Gasparin GM120 Img_6615
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Post  getback Mon May 08, 2023 7:52 am

Cool CO2 power , is the puffin going to bee FF or you putting in some electrics ? Either way should bee a good flier from what I have seen , one video LOL This Site Rocks!
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Post  Tobaiies Mon May 08, 2023 1:48 pm

getback wrote:Cool CO2 power , is the puffin going to bee FF or you putting in some electrics ? Either way should bee a good flier from what I have seen , one video LOL This Site Rocks!
Yes, I will install a small UMX receiver unit. Otherwise I am a bit afraid that he will fly away. RC Plane CO2 Gasparin GM120 Img_6616
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Post  getback Tue May 09, 2023 2:33 pm

Tobaiies wrote:
getback wrote:Cool CO2 power , is the puffin going to bee FF or you putting in some electrics ? Either way should bee a good flier from what I have seen , one video LOL This Site Rocks!
Yes, I will install a small UMX receiver unit. Otherwise I am a bit afraid that he will fly away. RC Plane CO2 Gasparin GM120 Img_6616
Yes at least A Better chance anyway lol! Popcorn
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Post  cstatman Tue May 09, 2023 4:13 pm

super super cool

I wanted a Gasparin for the longest time. brilliant motors

keep us posted on your build! cool!
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Post  ffkiwi Tue May 09, 2023 7:14 pm

Nothing at all wrong with Gasparins-they were what the second generation (ie 70's 80s) CO2 motors should have been but weren't-and an order of magnitude better than their predecessors such as the Telco, Shark, Modela and DP-03 in reliability. There was even a set of RC gear specifically made for C02 use back in the 90s.....not surprisingly it emanated from the Czech Republic...just like Gasparins...(I have one..its pulse proportional-so very light for its era.....but doesn't really bear comparison with the current crop of equipment intended for indoor R/C use-and still only gives you rudder control-whereas now if you wish you can have full house R/C for only a few grams....though I admit retracts might be a bit of a challenge at the size and weights we're talking....

ChrisM
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PS Aeromodeller published a CO2 R/C model for this equipment back in Nov 94, named the 'Quark' by well known UK designer, Peter Miller. A separate review of the CETO 27MHz pulse system was also published in the same issue.....pioneering stuff....
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