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smaller engine w/ 701

 
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tallswampman



Joined: 12 Nov 2009
Posts: 4

PostPosted: Thu Dec 10, 2009 6:41 am    Post subject: smaller engine w/ 701 Reply with quote

Zed, although I am impressed with the performance of the new 750 / O-200, I don’t believe I have 199 friends to help me put it together! Lol

However, I would seriously like to know if any of you have had any flight experience with a direct drive 80HP (actually 76 at top RPM) VW similar to the AeroVee or the Great Plains engine…. If so, please list the performance specs as best you know. I like the concept of these two engines because of the fact that they are kits which gives the builder a good working knowledge of any major overhauls in the future.

I saw a picture of an direct drive VW installation on Zenith’s web site (might have been a 601), but there were no accompanying specifications.

Also, if it is a viable option, how do you cope with the weight difference?

Mike

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rvickski(at)yahoo.com
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PostPosted: Thu Dec 10, 2009 8:22 am    Post subject: smaller engine w/ 701 Reply with quote

I'll pipe in. a buddy has a GP2180 in a Quail, cantilevered high wing, (no struts) single place, aluminum construction. 110 mph cruise 3 gph. Take off roll 500 ft. He tried to talk me into one for my 701.

Consider power to weight (582 lots of power, little weight, ala Mr Heintz)
Then the 4 forces, thrust/drag and lift/weight.

The 701 would fly, sure, but it's not a float forever Cub, it's a high drag STOL. A guy might be satisfied with a 2180 / 701 if he was a bantam weight pilot and flew alone. But a 750/2180 would be self defeating in my opinion.

Figure 185 lbs for the 2180 ready to go. A realistic HP figure is 66 at 2700 rpm (133 cubic inches). I would not want to be under powered by 33%.

Roy Szarafinski
roysgarage.com
XL tee shirts fit just right
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