Re: Q2/200 Engine mounts

Jay Scheevel

Hi Vern,


I got the thrust line on the 3300 pretty close (+/- 0.2”) to that of the O200. I was able to use my original Q-200 cowling halves with not too much alteration, other than the self-inflicted issue of building the radiator ducts. Sometime down the road, I will probably slice off the forward scoop that was used for the carb intake on the O200 and serves as the oil cooler intake on my engine. I can clean up the drag by doing this, so it is on my list for down the road. Won’t affect the oil cooler, since I will install a NACA duct on the bottom of the cowl, which actually will be better for cooling during climbout.





From: <> On Behalf Of smeshno1@...
Sent: Thursday, February 10, 2022 9:34 AM
Subject: Re: [Q-List] Q2/200 Engine mounts


 Just curious Jay.. was your 3300 also at the O-200 thrust line or did that change? I know for sure on my engine choice 

the supplied cowling is not a useful item. I will be hinging in 4 sections. 2 up and 2 down.  Different materials and 

construction process.  



From: <> on behalf of Jay Scheevel <jay@...>
Sent: Wednesday, February 9, 2022 10:14 PM
To: <>
Subject: Re: [Q-List] Q2/200 Engine mounts


I computed the vertical position of my empty CG when I was doing my weigh and balance by changing the angle of the fuselage from zero and recording the difference in scales and FS’s, then computed the vertical CG from those. I will see if I can dig that up. I also did a measurement of the difference between the thrust line of the Revmaster and the O200. They are not the same. Will see if I can find that also. 




On Feb 9, 2022, at 9:03 PM, Ian Ashdown <ian.ashdown@...> wrote:

I don’t believe the design O-200 thrust line is WL 15” but the only dimensional reference I’ve found states that it is 7.6” (I think) from the top of the firewall.  Don’t you love the use of consistent datum’s!  My question is, is that the firewall panel (inside of the Fuse) or the outside of the fuse at the FS 14” (firewall)?

Very confusing/frustrating!


Join { to automatically receive all group messages.