Hangar 9 Cherokee 40
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$300.00
| 8/25/2008
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Posts: 106
Joined: 5/27/2007 From: , SC, USA Status: offline
Just picked mine up from HobbyTownUSA. Looks like a great plane. Anyone try one of these with an O.S. 1.60 FX?? I have one new on the shelf and thought I would give it a try.
Posts: 1427
Joined: 12/5/2005 From: Victoria,
MN, USA Status: offline
quote:
ORIGINAL: reincarnate
Ok I can't find the ZDZ 40 F3A anywhere. Still trying to decide what engine I'll use. Not planning on racing, just weekend sport flying and the enjoyment of cranking up a speed plane once in a while. The build thread I started has kind of died, since I haven't done anything except re-working servo wires so I don't have extensions from the wings and tail to contend with. Any one with more engine experience than me (basically everyone including the family dog) keep posting powerplant ideas. I am leaning toward the Saito 180 but have also looked at a YS 160 DZ and the Evo 26 GT.
Posts: 2121
Joined: 12/19/2001 From: Durham, NC, USA Status: offline
Balsafire: You'll have to turn that Mejlik 16-12 a lot faster than 9500 RPM to get to 150 MPH, maybe closer to 15,000 RPM if my calculations are correct.
My Sundowner had a lot of wrinkles that were found by my heat gun. Easily shrunk out.
The main gear is easily installable if you have the hands of a 6 year old!
I will be using the Evolution 26 on mine because I have one available.
The wings are done and starting on the fuselage stuff tonight.
BTW, all the parts in the box in my kit weighs 8.14 pounds.
_____________________________
Dick Pettit Associate Editor, R/C REPORT Magazine "You Can Buy Better, But You Can't Pay More"
Posts: 780
Joined: 10/1/2006 From: Columbia City,
IN, USA Status: offline
quote:
The main gear is easily installable if you have the hands of a 6 year old!
Yeah in my case it was my nine year old daughter who started the nuts for me!
What do you think of the aluminum block arrangement Dick? I've learned to respect your musings, and am curious as to how you think the gear area will hold up. I wondered if, after a couple of hard landings, the bolts mounting the angle to the airframe could "egg" the ply. I'd hate to have to try and tighten those bolts.
I'm looking at pulling my Evo 26 off of another airframe and using on mine also. What prop are you looking at? As you'll undoubtedly finish long before me, and I assume you're doing a review, please post your results.
Good luck!
< Message edited by reincarnate -- 6/27/2007 1:21:19 PM >
Posts: 2121
Joined: 12/19/2001 From: Durham, NC, USA Status: offline
I didn't take that close a look at the gear mounting arrangement. It looks a lot like many of the other kits I have done and they all stood up to "less-than-perfect" landings.
I'm getting some APC props, 15-8, 15-10 and a 16-8. I have no idea which will be the best.
There sure were a lot of wrinkles in the covering. All found and removed by my heat gun.
_____________________________
Dick Pettit Associate Editor, R/C REPORT Magazine "You Can Buy Better, But You Can't Pay More"
Posts: 121
Joined: 4/17/2005 From: Las Vegas,
NV, USA Status: offline
quote:
ORIGINAL: GR7Racer
Balsafire...
Keep us posted on the graphics, that sounds interesting...
Good luck and we hope to see you in Parker.
KMac
Hey all. I'll try to describe what Brad and I have been kicking around. Keep in mind I am "artistically challenged" at best . Outboard towards the wing tips will be a waving checkerboard like a waving checkered flag where the checks are larger at the l.e. and get smaller going back with the same for the stab. You'll get to choose your number, mines 26 from my motocross days for the wing and fin. We were also talking about a checkerboard pattern in the yellow part of the wing but going straight back like it's been stretched from going fast. Once he has the jigs you can have the basic pattern in your choice of colors and your personal number. As soon as I get some pics from Brad i'll post them for everyones feed back.
GR7 Thanks for the invite to Parker. I'm going to do my best to schedule work around that weekend. I can't imagine a more fun way to get my butt kicked . Now, if I can just come up with a way to disguise the BGX to look like an Evo...
Dick Oh yeah!!! Bet I can get'er to 150 if I power dive from say 2000 feet!!! . Ok, I'll admit it I just pulled those numbers out of my tail. I have no idea what formula you use to calculate your speed. Help a rookie out. How do you calculate such a thing and what kind of top speed do you think I'd see? I chose the Mej. prop 'cause it costs more so it must go faster, right? Seriously, which prop is the best for a speeder. Heck, truth be known I'll probably freeze up and start yelling for help like a newbie(which I am with this stuff) if I get over 100 m.p.h. . If my "britches" fill up, I guess that's fast enough
Posts: 780
Joined: 10/1/2006 From: Columbia City,
IN, USA Status: offline
Now see, that's what I've been trying to figure out. Bill Brundle from HH said earlier that 120mph speeds were possible with the Evo 26. Knowing what this engine is capable of (have one one my 1.50 P-51) I couldn't see where those numbers came from. I just downloaded and ran ThrustHP and came up with around 84 MPH with a 16x10 wood at 8900 RPM (right about where my Evo is peaking on the ground now). Guessed on a couple of variables, since I'm not at home, but should be pretty close. Any ideas where HH is getting their numbers?
Posts: 321
Joined: 11/25/2003 From: MIRAMAR, FL, USA Status: offline
quote:
ORIGINAL: reincarnate
Wow. Thats all. Wow. I'd have to start over. You sound like you have it all down though. Thanks for the information. I think I'll stick with the fuel power for now, but you gave enough information to get someone started spending money. Good report.
Well, I've been able to all but finish this plane, the only thing I have left to do is balance it and get the final position for my flight batteries. I had it out back today tied to a post with the 2 x 6S2P EVO 5000 LiPo's hooked up in series, all I can say is holy crap! This is the nastiest electric I have yet put together, I was watching the aluminum rods I used to extend the motor forward to the necessary location flex from the torque of the motor when ramping it up, I'm now glad I decided to use a soft motor mount from Budd Engineering to take some of the shock off the rods. The expected numbers from MotoCalc actually turned out to be low, the Whattmeter shows 3,650 watts @ 81.5 amps, that's some 4.7 HP. I have a Mejzlik 20 x 12 on it right now and it really just wants to rip right off the firewall. I checked the RPM's and I'm showing 7,110, I'd be curious if Dick might run the calculation for me for estimated speed?
Here are some pics showing the AXI 5330/F3A motor mounting, the Jeti Spin 99 amp speed control plus the 2 arming switches I installed on top of the cowl area. It was hard to find a good place to put these with the fairing for the wings taking up the normal space on the side near the front. I am using 2 arming switches because even the high voltage Ultimate BEC can't handle more than 45 volts (I am running a little hotter than 50 with the 12S setup). What I decided to do was put in 2 BEC's for redundancy and wire each one seperately to each of the 6S2P packs, if either one of the arming switches is engaged, the BEC will suply power to the Spektrum 7000 RX and only if both are engaged is the series circuit completed and power supplied to the motor. I have never tried this type of setup before but it seems to be the best solution given I want to use BEC's.
Posts: 321
Joined: 11/25/2003 From: MIRAMAR, FL, USA Status: offline
quote:
ORIGINAL: pettit
That comes to: 80.8 MPH 4.9HP 23 pounds of thrust according to ThrustHP.
Are you going to have enough ground clearance for that 20" prop?
Dick,
Now THAT would be funny, taking off only to find there isn't enough ground clearance, heheh. Yes, I have 1 5/8" clearance with the tail in the air in take-off attitude, should be more than enough though I'll have to keep an eye on gear spread over time if I have any hard landings (though the gear is mightly sturdy).
MotoCalc is predicting 89 MPH and 21.45 pounds of thrust, glad to see the numbers are close. Though I am not at all building this plane for speed (I just fell in love with the looks), I am curious which way to go for speed. Smaller prop, greater pitch, 3-blade, etc?
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All Forums >> RC Airplanes >> ARF or RTF >> RE: H9 Sundowner 
RE: H9 Sundowner - 
. Outboard towards the wing tips will be a waving checkerboard like a waving checkered flag where the checks are larger at the l.e. and get smaller going back with the same for the stab. You'll get to choose your number, mines 26 from my motocross days for the wing and fin. We were also talking about a checkerboard pattern in the yellow part of the wing but going straight back like it's been stretched from going fast. Once he has the jigs you can have the basic pattern in your choice of colors and your personal number. As soon as I get some pics from Brad i'll post them for everyones feed back. 
. Now, if I can just come up with a way to disguise the BGX to look like an Evo... 
. If my "britches" fill up, I guess that's fast enough 
