Leardriver

My Feedback: (12)

Hey just picked up my GP EXTRA tonight and am trying to decide whether to buy the ZDZ40 or the new ZDZ50. What do you guys that are already flying the plane think? The 50 is approx 3.5oz heavier, how has the cg worked out in your GP Extra's? The ZDZ40 will in all likely hood be plenty powerful for 3D, but would the extra hp of the 50 make the plane fly better or simply overpower it to the point of stupidity? I don't want to turn this wonderful airframe into a flying brick. The $$ difference between the two engines isn't that much so I would really like to hear your opinion.

Also I was wondering how heavy these planes have been coming in at in the real world? Anyone weighed theirs yet?

Thanks,
Leardriver

Bob Pastorello

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Leardriver - I'm flying mine with the ZDZ 50. It is NOT huge overpowering the airframe, as it comes in a bit heavy. Mine, dead stock, is 15 3/4 lbs. with the ZDZ and Bisson muffler. Flight performance is very, very good, and I've tried the ZDZ 40 in similar airframe/weights...the 50 would be my choice (it was).

It is a very solid airplane. Please visit my website, and read about my experience with it so far.

AJF 2

My Feedback: (1)

Fly mine with a Taurus 42 Zinger 22/8 at 6900 RPMs-total unlimited. My favorite move on takeoff-(simple, but impressive to the crowd)--From right to left takeoff clear the ground-roll right 3/4 roll-fly out knife edge climb at 45 degrees (in other words-plenty of power)

Geistware

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AJF 2,
You can post pictures and videos of this
We will not mind!

M3

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Where's a good place to buy the Taurus engine line?

Thanks.

Geistware

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Try http://www.taurus-engines.net/

The owner, Bill Oberdieck, is the AMA District 7 VP

Cobra1

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I have a OS 300 twin in mine. Haven't flown it yet but should be very good.

Jim Flannigan

I fly mine with a Taurus ts-52 and WOW!

BAS

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Apilot what prop are you using on your Taurus i am waiting for mine from Bill O its been going on two months but i am not in any hurry still woking on another project .

AJF--2

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I would but that bulky videocam keep hitting the trans antenna when I try to focus

Jim Flannigan

Bruce I am running a Mejzlik 22x8.
Jim

BAS

My Feedback: (28)

Ok thanks on the prop info Bruce

2lo

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Hey AJF 2
would your 3.7 fit in the WS300? I thought I read somewhere where the cowl was 101/2 to 11'' wide? 41/2 pounds wouldn't increase the wing loading much more than any any of the 50's
definately less than the g62's just hope the wing failure in the last ws300 plane post was fluke. yes i know the 60 is really to much but, but ,but? I can't find anything else to put this engine in

AJF--2

My Feedback: (119)

A D&B 3.7 would probably fit OK--the problem is the spark plugs point up on the twin-so they are really sticking more out of the top of the cowl than side-If they pointed toward the rear of the engine, it would be no problem--also at 5.4 lbs W/ignition it may be a little heavy, but not much more that a G62. A quick thought on the prop if I may add--I was running a PK Plus 22/8 on my Pitts with the Taurus 52. I also tried a Mejslic 23/10, Zinger Pro 22/8, 22/10, and a Biela 22/10. Personally, I found the best performance with the Belia, and PK Plus and oversize Mejslic. It kept the RPMs in the low to mid 6000-(which most people say is not enough) but the performance was spectular. You can get more revs with other props, but for me, I found it is performance and not RPMs that count. Bill O agreed with me. He says the peak performance with the 3.2 is in the 5800-7000 RPM range. Just my opinion of course.

Dick T.

My Feedback: (243)

Just received the RCS 44B2 for my Wagstaff (they are on special right now for $475.00).

A friend is flying his with a G62, extra batteries, smoke, with flying weight at 19 pounds.

The RCS twin (with mufflers, ignition and battery) is one pound+ lighter than a G62 and I won't carry two pounds of batteries and smokw so it should come in around 16 lbs.

Should be very good and extra smooth. By the way, his flys exceptionally well at that weight and slows to a crawl for landing.

Leardriver

My Feedback: (12)

Thanks guys for your input here. I have decided to go with the ZDZ50 and Bison in cowl muffler for this project. I also have 4 futaba 9250 metal gear digital servos for the ailerons and elevator. On the rudder I plan to use a pair of futaba 9202...I called GP on this and the tech on the phone said no problem. I was worried that it wasn't a metal gear servo but they seem to think it won't be a problem, especially since there is two of them.

Thanks
Leardriver

Mr_Scale

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Some of you gents that have flown yours may be able to give me some advise. I have an O.S. 300 twin four stroke or a Moki 1.8 that is available to go in my GP PW Extra. I am not prepared to buy another motor at the moment, although I would love to drop in a 50cc gasser, it is not an option. Cobra, are you concerned about fuel consumption with your O.S. 300? Did you add an extra tank for more capacity?

Cobra1

My Feedback: (42)

Mr_Scale, I am using the OS 300 for the same reason, it is what I have. Bought the engine several years ago and have not yet used it. Yes I am going to a larger tank. I am sure that the plane will do everything with this motor but maybe not be a rocket exiting a hover. I love the sound of a twin, I have several.

Jeff Hendricks

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How would a BME 50 be ?