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The obvious problem is getting the weight and balance right. You'd have to build an engine mount so could shift the engine forward a bit which means mods to the cowling. I'd guess that difficulties would multiply. If you're going to all that trouble why not go for broke and fit a 3300?

Peter
Sonex 894

I know the engine will have to move forward with a new engine mount and cowl mods are needed. Why not go for broke?? Because I already have a Camit 2200 in my shop that was going to be put on another project but I am so unhappy with the constant problems with the AeroVee that I am giving up on trying to "fix it".

The Onex is a great design and certainly a lot of fun to fly but that fun is substantially reduced waiting for the next hiccup from the AeroVee.
Thanks for your input Peter

Loren

lgsievila wrote:Has anyone put a Jab or Camit 2200 in a Onex. I know of one in Florida.
Thanks
Loren

Could that Florida Onex be this one on barnstormers?
http://www.barnstormers.com/classified_ ... _Onex.html

That is the guy's name John that I saw pictures of with his Onex. Earlier ad said he was selling his Sonex because he was having too much fun flying his Onex.
Loren

Hi Loren, if you are going with the Camit 2200, can I suggest you stick with the Bing Carburettor. They work really well. Sure, you have to make a carb heat system, but if you are capable of making the engine mount, a heat system is easy. I wasn't aware that there was such a thing as a "Sonex burp" until I read about it here.

Peter
Sonex 894

Do not know if it would be much different with a 2200 engine, but on my 3300 installation, with air filter directly on the Bing Carb, it takes in air that has been heated by passing through the engine's cooling fins, and thus is much like flying with carb heat on all the time. Have carb temperature monitor and the electric heating option on the Bing, but have seen no real need for the electric heat. Would be a bit more power if taking in cold outside air, but at loss of simplicity.

David A. Sonex TD, CAMit 3300.

[quote="peter anson"]Hi Loren, if you are going with the Camit 2200, can I suggest you stick with the Bing Carburettor.

Thanks Peter-I already went through an Aeroinjector, a MK I Rotec, and MK II Rotec on the AeroVee so I will definitely be staying with the Bing.
Loren

DCASonex wrote:Do not know if it would be much different with a 2200 engine, but on my 3300 installation, with air filter directly on the Bing Carb, it takes in air that has been heated by passing through the engine's cooling fins, and thus is much like flying with carb heat on all the time. Have carb temperature monitor and the electric heating option on the Bing, but have seen no real need for the electric heat. Would be a bit more power if taking in cold outside air, but at loss of simplicity.

David A. Sonex TD, CAMit 3300.

Onex with 2200 should be pretty much the same as your David. A friend has a 2200 Jab in his Quickair with electric heat on the carb and it works great. I'll let everyone know how things work out.
Thanks for everyone's comments.
Loren

I agree with Peter's advice on the 2200. Intaking heated air is simply throwing power away. Although with the Bing it is important not to use ram air.

I have modified the Bing installation in three ways:
- The intake system receives outside air from a port in the cowling sidewall.
- Installed a 30 watt motorcycle carb heater element, Yamaha part number 3BT-83790-00-00, on to the empty Bing throttle mount.
- Installed a HACman mixture controll system, but using a miniture venturi as the vacuum source instead of manifold pressure. This allows leaning with wot and lean of peak operation. EGT distribution seems to be best at wot. My cruise EGTs are about 1300 at 7500', 2950 rpm, 2.9 gph. The venturi was made on a 3d printer if anyone wants a copy of it.

peter anson wrote:Hi Loren, if you are going with the Camit 2200, can I suggest you stick with the Bing Carburettor. They work really well. Sure, you have to make a carb heat system, but if you are capable of making the engine mount, a heat system is easy. I wasn't aware that there was such a thing as a "Sonex burp" until I read about it here.

Peter
Sonex 894