CO2 Engine

Weaponizer_57 Thu Dec 14, 2023 12:45 am

Hi

I got this for free at an estate sale. Does anybody know who made this CO2 engine? The tubing is loose and the filling adapter is missing

I would like to fix it. Any idea where to get the tubing and a filling adapter? The tubing seems to be a 1mm OD or less copper. I have a Gasparin G28 that has aluminum tubing. I got it from the Czech vendor Old Engine Models. He does not list any tubing on his website.

Thanks. I think the engine is from the 70's or 80's.

ffkiwi Thu Dec 14, 2023 1:28 am

Its a UK made Humbrol aka 'Shark' CO2 motor-contemporary with the better known UK Telco...and about the same size. As for tubing-hard to find.

ChrisM
'ffkiwi'

Weaponizer_57 Fri Dec 15, 2023 12:28 pm

Thanks!

It is interesting technology. I wonder where I could get 1mm or less copper tubing and a filling valve.. I could make it run again.

ffkiwi Fri Dec 15, 2023 8:15 pm

You have a couple of options-Telco tubing occasionally (and I mean occasionally-its not common!) appears on Ebay....it was a standard Telco spare (as were various other parts) and will fit the Shark/Humbrol unit. The filler valve is another story-finding an original is going to be a needle in haystack job....but again a Telco unit will work ....if you can find one. The original filler is a brass turning-into which the aluminium filler spigot screws, and into the other end the copper gas line is soldered....and the remaining end of the copper line is soldered into the lid of the tank. Of course there is also an internal ball valve inside the unit as well-but this is immaterial to the discussion as you would not normally open the unit.

The catch-such as it is-is that the male filler spigots are a close match for the female receptacle on the charging gun-so there is no guarantee that filler valve brand 'X' will mate with charging gun brand 'Y'....so if you were to fit a Telco filler valve, I would advise getting hold of a Telco charging gun. Now the other option would be to check out this guy:

http://www.old-engine-model.com/en/k266.gasparin-co2-motory/ and enquire with him-explaining your situation-and seeing if he can supply a Gasparin filler valve-preferably with tubing fitted- as a spare part. You would-if successful then be advised to get a matching filler unit-of which he can offer a number of options-all shown on the website.

ChrisM
'ffkiwi'

Weaponizer_57 Sun Dec 17, 2023 10:59 am

Thanks for the detailed response. I have dealt with http://www.old-engine-model.com/en/k266.gasparin-co2-motory and have bought two small CO2 engines from him. Jiri has been great and I think combining the filler unit with tube to the Humbrol engine is the way to go.

I will look for the Telco tubing and keep the engine around as a long term project.

kakariki53 Sat Sep 28, 2024 6:49 pm

Hi All
I don't suppose there would be any parts for these around, I have one that needs a piston and black plastic insert that holds the ball in place.

ffkiwi Sat Sep 28, 2024 10:30 pm

kakariki53 wrote:Hi All
I don't suppose there would be any parts for these around, I have one that needs a piston and black plastic insert that holds the ball in place.

Are you referring to a Telco, a Shark-or one of the others? If a Telco/Shark-not a hope in hell-these haven't been made since the 80s-so your only option is to buy another one and cannabilise it for the parts. In the case of the G-Mot or Gasparin brands-there might be some rebuild kits still kicking around. Telcos are still reasonably plentiful on Ebay, Sharks less so. I have NEVER seen replacement pistons for sale as a spare part.....except for the Modela brand 0.27cc unit...where is you purchased it new a small container of spare parts was supplied with the engine. I have no ide whether these kits were available as a separate spare part as such....and Modela CO2 motors themselves have long since faded from the scene.

ChrisM

1975 control line guy Thu Oct 10, 2024 11:20 am

I highly recommend wearing safety glasses and work gloves when handling CO2 chargers and charging. I have worked with Telco, OK, Shark and my favorite Gasparin.

On more than one occasion I have had the CO2 charger seal blow out, had the seal between the charger nipple and the engine filler leak, and had the head or another seal on the engine leak spraying frozen CO2 onto my hands and in the direction of my face.

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