RE: First Flight!!!   
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RE: First Flight!!! - 11/14/2003 4:48 PM   
rongreg13



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From: Loveland, OH, USA
Status: offline 		I use a Fox 2.4 in mine with a Bennett side mount muffler. I tried a wraparound pitts, but they take up even more space and run into firewall interference problems. You can see what I had to do to fit this setup in and this is a very compact and light engine. The plane flies great with this engine and it has plenty of power for large round loops and limited vertical climbs.

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RE: First Flight!!! - 11/14/2003 4:53 PM   
pittsdriver



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Status: offline 		I have a ZDZ 40 for mine with a side muffler. It will fit on the firewall even though it has a rear carb. Looks like a nice combo. Don

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RE: First Flight!!! - 11/14/2003 4:55 PM   
JoeEagle



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Status: offline 		hey, would you put a 4 blade ham standard 26x24 prop on it. should spin as a direct drive with the 80.

you can email me back channel if you want more info.

cheers

joe

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RE: First Flight!!! - 11/14/2003 5:01 PM   
JoeEagle



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Status: offline 		hmm

no pics

i'll try again

here they are

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RE: First Flight!!! - 11/15/2003 2:30 AM   
easydog1



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Status: offline 		Hey Wiwanczyk, I would like to know how that 80 fits. I talked to ZDZ today, I think it's one of the best fits and the weight is only 4.45 with 8 hp, so I will be able to swing a four blade. But I want to confirm the fit and what mount you are using.

Thanks,

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RE: First Flight!!! - 11/15/2003 6:28 AM   
CarverTripp



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Status: offline 		Joe Eagle

The four bladed prop you showed earlier is fantastic! It's the closest I've seen to the real thing for a P-51. Presently I am building a
1/5 scale P-51 and I would like to buy one of these props. Also could you tell us the engine behind "the prop" and why does it have to be gear reduced?

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RE: First Flight!!! - 11/15/2003 10:19 PM   
splais


 

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From: Yuma, AZ, USA
Status: offline 		After several more flights a few additional comments. The plane/engine continues to break-in well. Nothing has come loose in the last four flights, so all the fittings must have seated in. I have yet to make a flaps up landing, but have no reason to try because she lands beautifully with full flaps. I have discovered that I have about a 6 click trim change between slow gear-down level flight and normal gear-up high speed level flight. I flew her inverted for a short distance just before landing on her last flight today and she seemed to handle it beautifully. It was only a short distance but I did not notice an extreme elevator correction being required. I flew her first loops and they were actually pretty tight with no tendency to snap out. She also did some split-S's, barrel rolls, and aileron rolls with no problem. The four flights today were at our field that has a paved runway. Takeoffs were fine with an easily controlled pull to the left on takeoff.

We did have a landing problem that I have not figured out yet. On landing rollout she was jerking pretty hard to the right just at transition from flying to tail on the ground. Pulling hard enough to tip up on one wing tip. Did not scrap any thing and had no tendency to nose over. Just suddenly pull hard right and tip. Then when the speed dropped even more she was fine. Did this on three landings. She didn't do this on the grass field and when landing in the dirt (sorry, missed my lineup on one landing). I have not been able to figure it out yet. Not sure if I'm landing to fast; or maybe just over correcting on landing roll-out. Will have to examine this more next time out.

One other thing. this DA50 is turning out to be a dream. I have 8 flights on her now and I have flown her for a quite a while and have yet to get below half a tank. Fuel consumption is not a problem for the DA50.

Hey, has anyone tried hovering a Mustang?

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RE: First Flight!!! - 11/16/2003 5:55 AM   
MANFRED



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Status: online 		Could your pullimg to one direction be a toe-in problem?

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RE: First Flight!!! - 11/16/2003 3:05 PM   
gary9648


 

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Status: offline 		We are currently taking care of an air leak in the down side of one of the mains. The ZDZ 40 rear intake, rear exhaust fit inside the cowl very well. No carb sticking out the side. Engine turns a 20/8 prop at 8200 RPM. This was on the first tank of fuel. I can not imagine what that 80 will do. I have concerns of whether the firewall or airframe will take the power with out failure. Also I don't think the 80 will have enough back clearance for a muffler. Let us know. I just recieved two more sets of Aerotech wheels. These wheels have to be seen to believed, right Splas? For roughly 48.00 a piece they are truly a bargain. Now waiting on my last order of Sierra retracts. Should have them in a couple of weeks. Hope the weather gets better so we can fly number1.. Well back to the building room. Number two will end up looking like the G2 mustang. With envasion strips and blue checkers on the nose, with a blue tail, and blue spinner. (OLD BOY)


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RE: First Flight!!! - 11/16/2003 5:29 PM   
JoeEagle



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Status: offline 		The 4 Bladed prop is custom made for me currently overseas. I am in the process of sourcing them in north america, as i do not like the lead time/price point of the prop currently. i expect them to be available for a lower cost in the not too distant future. I'll email people more info on purchasing one of these currently imported prop if you would like. just send me an email back channel

as for the reduction drive. the prop is 26" diameter and a 24" pitch. the blades are 2-1/8 wide at the tip. they have a whole bunch of "bite" to overcome on spinning them, so i would seriously doubt that they could/would work on a 50cc motor without some sort of mechanical advantage.

now, for the guy who wants to put a ZDZ 80 in his plane, i think you could spin this prop with an 80.

i am spinning it with both a DA 50 and a ZDZ 50 at 4200 to 4400 RPM. we are making some changes to the drive design to make it a little more robust, and to make it easier to install with both motors. i expect the drive to be in a few testers hands mid december (with any luck)

and i agree that the ZDZ 80 motor in this plane i think will be just a little overkill!!! not to say i wouldn't like to see it fly, but i'd be behind some cover when it did. while the 80 is a great motor, there is a whole bunch more vibration than a 50 single.

i have 2 DA50-R motors and i think that they are just outstanding motors....best of the current crop of 50's.

cheers

joe

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RE: First Flight!!! - 11/16/2003 8:42 PM   
splais


 

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Status: offline 		Gary, yes I looked at A LOT of wheels. The Aerotech wheels are half the price of all the other wheels out there. I have compared the wheels to actual photos of the P-51 and they are as scale as you can get. As far as I am concerned; everybody elses scale wheels are a rip off.

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RE: First Flight!!! - 11/16/2003 11:29 PM   
JoeEagle



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Status: offline 		its pretty funny about the wheels.

when Robart came out with their new brakes for wheels, i looked into purchasing them for my 5", to be used on my TF P-51 Kit mustang. i was told by robart that new brakes could not be used on the "scale P-51 10 spoke" wheels. i could use the brakes on the 'regular" 10 spoke wheels, just not the p-51 wheels. i was then told that the only reason that robart made the scale wheels was for the Aerotech p-51. i wish i had known that before i spent more money on the robart wheels!!!

live and learn.


hey, has anyone purchased and tried the Aerotech "scale" sliding canopy.....not inexpensive at 120 bucks, but then, its the whole canopy and frame done.

i'll be interested in hearing comments!!

cheers

joe

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RE: First Flight!!! - 11/17/2003 12:44 AM   
wojtek


 

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quote:

The plus side is, if you don't need the speed/power for "normal" flight. You will have enough power to swing a big 4-blade prop with some authority. I am planning on trying an 18-6 or 18-8 Zinger 4-blade with my Moki 2.10. You should be able to swing larger props. I may lose some performance, but if it flys OK, I'll go for the looks.


actually im going with a 20x20 to 22x20 2 bladed prop my etimates tell me over 150 mph with this one !!! woo hoo ! cant wait !! I already tore off all the monokote to prepare for a glass finish ... i have to say this ARF is very well built and the wood is top quality ... i was actually even impressed with the monokote application, especially in corners and crevices ... there was wrinkling, but all ironable away .. anyway, the monokote is in the trash now ... i will be painting it like the picture i posted earlier in this thread ...


I can't wait to get this one flight ready !!! (unfortunately i have over 5 other projects running simultaneously ... )



Wojtek

< Message edited by wiwanczyk -- 11/16/2003 7:44:55 PM >

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RE: First Flight!!! - 11/17/2003 12:50 AM   
wojtek


 

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quote:

Hey Wiwanczyk, I would like to know how that 80 fits. I talked to ZDZ today, I think it's one of the best fits and the weight is only 4.45 with 8 hp, so I will be able to swing a four blade. But I want to confirm the fit and what mount you are using.



I am using aerografics stand-offs for the mounts, the fit in the cowl is good, however the engine head will stick out the bottom of the cowl by about 1/2" and the side of the Brison mufler will pop out the side of the cowling slightly .... since im not going for a scale look, but more of a wild-racer deal, i dont reallt care for the portrusions ... if not for the muffler, the ZDZ is a super fit ... here is a pic of mine with the cell phone for reference .. ..



Wojtek

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RE: First Flight!!! - 11/17/2003 6:05 AM   
nyrcpilot



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Status: offline 		ZDZ 80 Hang on!



I have a zdz 80 in my 1/3 scale cap, hovers at 1/4- 1/3 throttle.


IMO it is overkill for this plane, but I still would LOVE to see it on a fly by with a high pitch prop!


I would also give special attention to the firewall, this engine can make up to 65lbs of thrust with the right prop and muffler!

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RE: First Flight!!! - 11/17/2003 6:09 AM   
nyrcpilot



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Status: offline 		I am thinking of this plane for my first warbird. ( I have many years of giant scale aerobatic experience)


I love P-47's but I can not find a giant arf P-47 gasser, I do not have time for a kit.

Because I do not have time for a kit, I thought this would be the best plane for buying and adding accessories, thanks for all the suggestions in this thread.

I have a ZDZ 40 RV to use, Before I buy this plane does anyone know of a P-47 ARF that will take this engine?



Thanks

< Message edited by lgodin-RCU -- 11/17/2003 6:10:26 AM >

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RE: First Flight!!! - 11/17/2003 3:23 PM   
BobH


 

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Status: offline 		Contact Yellow AC. They sell (or sold) ARF versions of their P-47. BobH

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RE: First Flight!!! - 11/17/2003 5:05 PM   
MustangFan



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Status: offline 		Anyone heard the rumor of the TF Giant P-47 coming out as an ARF ?

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RE: First Flight!!! - 11/17/2003 6:50 PM   
nyrcpilot



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quote:

ORIGINAL: MustangFan

Anyone heard the rumor of the TF Giant P-47 coming out as an ARF ?



That is what I am afraid of, putting the time and money in the P51 only for TF to release the p47.


It would only make sense IMO, the p51 and p47 are popular kits for TF

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RE: First Flight!!! - 11/17/2003 10:35 PM   
wojtek


 

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Status: offline 		the P47 and the Stinson Reliant are on the ARF list for TopFlite ....



Wojtek

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RE: First Flight!!! - 11/18/2003 5:25 AM   
JoeEagle



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Status: offline 		ok. im game, what prop combo will give you 65 lbs of static thrust on this motor?

cheers

joe

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RE: First Flight!!! - 11/18/2003 5:34 AM   
JoeEagle



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Status: offline 		Btw, Roger is a super nice guy to deal with and he makes a great bunch of products as well. a real gentleman.

now, to my question. what program did you use and what parameters did you plug in to calculate the 150 mph

thanks and please keep us posted on the 80.

cheers

joe

ps

have any of you read the following??

http://www.scalearo.com/maneuver_realism_speed4.htm

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RE: First Flight!!! - 11/18/2003 10:51 AM   
wojtek


 

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Status: offline 		I figured the thrust based on the prop the ZDZ 80 will swing ... if i pull a 20x17 prop at the very least, and it turns at ~8000 on the ground, im already breaking 150 on that .... beyond that, i have to experiment with props ... I have heard that racing guys use props up to 22x20 on 80 size planes, however the props efectivenes only comes in at high speeds and otherwise its a bear to fly ... im figuring a 20x17 - 20x20 prop will beperfect ...


Wojtek

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RE: First Flight!!! - 11/18/2003 12:35 PM   
BobH


 

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Status: offline 		Are you figuring 100% prop efficiency to get that air speed? BobH

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RE: First Flight!!! - 11/18/2003 2:08 PM   
wojtek


 

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Status: offline 		actually not even close ... more like 70% eficiency ... figure it this way, a us engines 41 will pull the plane up to 85-90 mph, and close to 100 out of a dive (if not more)



Wojtek

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