ZDZ 224

A place to talk about smelly, noisy propulsion systems, both Gas and Glow

Re: ZDZ 224

Postby Freestyle dude on Sat Mar 09, 2019 9:07 pm

Well I fitted Zimmerman headers and cans. Complete transformation! In the air it feels every bit as powerful as the DA 200. It is now turning a Falcon 30x14 at ~6100rpm.
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Re: ZDZ 224

Postby Billy Bunter on Sun Mar 10, 2019 9:05 am

Really good to hear you are getting on better with this now, Angus!

Though I think there is a lot more to come in this engine, both through it loosening up as you run it in, but more so if you ever add some tuning to the exhaust system :mrgreen:

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Re: ZDZ 224

Postby Freestyle dude on Mon Mar 11, 2019 9:44 am

Yes, I'd say you are right Stuart. Although fitting a full tuned exhaust system in a CARF 330 would be very challenging with the low set wing tube. However, it is so good as it is now I'd be reluctant to change it. Once I get a bit more time on the engine I'll start experimenting with the 31.5x16 and 32X14 Engel props. I'm hoping these will be a lot quieter than the Falcon 30X14 which seems to give fantastic power and speed but can get pretty noisy unless you are ultra careful with the throttle.
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Re: ZDZ 224

Postby Billy Bunter on Mon Mar 11, 2019 10:12 am

Morning, Angus

I don't think you'd need to go to pipes to get a big gain.

I see that Chief Aircraft in the USA still have a Mintor 220 tuned canister set for sale: http://www.chiefaircraft.com/min-ck220-105.html

Fit something like those and you'll see a big boost from a canister exhaust package!

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Re: ZDZ 224

Postby Dave Wilshere on Mon Mar 11, 2019 12:40 pm

I went from a (recommended) RE2 pipe set up on a DA 60 to a Zimmermann canister and lost less than 100rpm...gaining much nicer throttling. :-)
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