towplane

sorry Eugen just saw your post.  can you call california where i'm stuck for free r cheap?  chris.  530 409 6101.  or better is towplane@gmail.com.  thanks, chris

On ‎2‎/‎6‎/‎2022 at 10:53 AM, Eugen said:

Hello Chris,

nice engine! My engine is on the way 🙂

which prop you did on that engine ? Dia? Pitch?

 

eugen is that a q2 diagram?  mines a Rutan model 54 (quickie)

On ‎11‎/‎6‎/‎2018 at 7:42 AM, Kent Ashton said:

Nice writeup.  I only recall seeing one Quickie here on the east coast with some kind of pull-starter engine.  Very interesting to see him get running.

Thanks, Kent.  No one's contacted me yet about details as to how to get their quickie going so I have to get the word out better. Maybe should offer it to Kitplanes?

I think most quickie pilots will agree that the plane is fine except for the powerplant.  Kohler was the first industrial engine mfgr. to come up with a 90 degree twin, so that's what I used.  Midwest Super Cubs (MSC) has a long history of making these engines perform reliably so the basic CH 25 (25 hp) was slightly modified:

• factory iron flywheel replaced with one duplicated in 6061 Al;
• crankshaft extension machined from 7071 Al;
• power take off is from flywheel end in order to keep cooling airflow as designed and reduce torsional harmonics;
• governor assembly removed;
• aluminum intake manifold replaced with plastic one from MSC'
• ground-adjustable main jet from MSC
• rotating assembly balanced, cam ground, heads ported & matched by MSC;
• all metal parts except flywheel (has magnets) cryogenically treated by Cryogenics International;
• Earls Performance oil cooler;
• CH18 coils substituted for the CH25 Smart Spark so that engine can run without battery;

This Quickie had 300 hours with the Onan, and so far has 18 with the CH 25.  Climbs 600 fpm @ 69 kias, gets over 100 mpg @ 73kias, goes 103 kias at 3600 rpm using 1.5 gph.

the firewall forward weighs 1 pound more than the Onan did, and has an electric starter.  Briggs, Honda, Subaru, and now Yamaha all make a similar engine.  Kawasaki's is water-cooled.  Hopefully folks will use one of these engines and get the Quickie fleet flying again!.