View Full Version : Butterfly and 618
07-27-2012, 06:21 AM
Any toughts on using this engine on a Butterfly frame?
07-27-2012, 06:33 AM
07-27-2012, 07:18 AM
I have a 582 blue head on mine and it flies great. The only thing I donít like about it is *no clutch*. I have to ride the brakes during taxi to stay above the re-drive chatter RPM range. I hate this.
I have the same problem on my two trikes. Fellow trike guys with clutches love emí on their two-strokes.
07-27-2012, 07:24 AM
07-27-2012, 08:04 AM
Fairly certain that Tim Verroi had a 618 on his Butterfly, before he converted it to a 912 Monarch configuration.
07-27-2012, 09:50 AM
Chris Wilson did it to his, no complaints from him. I think he sold it to Glenn K here on the forum.
07-27-2012, 05:28 PM
Yes, I own the Wilson "Super" Monarch now. Chris changed the keel and the mast to Aurora parts so it could accommodate the 618 and a 68" prop. I got less than 25 hours on the 618 and it melted 3 pistons. I wasn't interested in a 3rd rebuild and more money to chase a gremlin. I bought a Red Gold Rotax 670 from Rotax Rick. Just finished the install and testing today. I had to install an electric fuel pump to supplement the Mikuni pump, as it was unable to supply enough fuel to keep the float bowls full at WOT. Works great now. Unfortunately, I don't have a basis for comparison between the two. The weather here is much hotter that the last time I flew the 618. But the 670 seems to be running fine and has plenty of power for me at 4600 feet and 90+ degrees. Leaving for Mentone with it tomorrow.
Goin' flying with the pros and all my friends!! :whoo:
08-14-2012, 08:58 PM
What caused your last engine out? At Mentone?
08-16-2012, 05:07 AM
Scary Gary, you are not good shooting from the hip! YOU MISSED > > >
hERON (Head down to dodge the bullet)
09-22-2012, 03:17 AM
Ciao heron , ti ricordi di me? ai poi costruito l'autogiro in brasile?
10-11-2012, 12:11 PM
Ho perduto questo messagio
Dove stai, come stai?
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