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- This topic has 12 replies, 4 voices, and was last updated 12 years, 10 months ago by Scott Lapraik.
03/16/2010 at 3:22 pm #41340
Since I’ve been experimenting with different designs I thought I’d turn the new Mustang ‘B’ electric plane from Top Notch products into a GASSER!!! Below are pics of the finished product. Wing span is 463 Sq. inches, finished weight without bladder and fuel is 464 grams (16.35 ozs.), pwr. will be a new MVVS 15, covering is a combination of Polyspan and Ora covering. Initail test glides look very good!! 😀 Hopefully the wind will die down sometime in the near future so I can get started with the trimming process!!
05/03/2010 at 7:36 pm #48684
I like the wing. It looks as though you cut the tip panel to make a 6 panel wing. I look forward to hereing how it goes..05/05/2010 at 3:16 pm #48685DENNIS PHELANParticipant
It also looks like he added another rib and span to the tip.05/07/2010 at 1:22 pm #48686
Well had an opportunity to start the trimming process last night and it went pretty good. First flight had tight rt. hd. pwr. pattern, glide looked good but with no turn, had DT set for 5 seconds after pwr. Made trim tab adjustment on rudder and flew 2nd flight and was better but still needed improvement, made another trim tab adjustment and was ok but still to tight, decided to end trimming session (dark). Will make adjustment to add lt. hd. engine thrust and add shim to tilt stab for rt. hd. glide. Will let you know how it goes next time.
Scott05/07/2010 at 5:28 pm #48687
This sounds very much like what I went through with my Mavericks using very high powered electric motors. It wasn’t until I added a radio in the last one that I was able to control it enough to get it out of trouble by cutting the motor and DTing quickly while trimming it.
I’m putting together a E-Mustang now and I wish I’d seen your model before I built the wing. Esthetically (sp?), and probably aerodynamically yours is probably much better. Now that Larry Bagalini can provide complete control of both motor and DT I may not put a radio in my Mustang to trim it.
Any info on your wing would be welcome. Regards05/17/2010 at 2:33 pm #48688
Sorry I haven’t gotten back to you sooner but was on vacation last week! The E-Mustang as is currently designed will be a great flyer also. Jim and I have been experimenting with different wing options. The six panel wing came about when Jim had to rebuild a wing from pcs. at the Nats last year and we decided to try the six panel approach. I liked it so much that I decided to make my Mustang with the six panels. I also changed the Dihedral to suit my liking, so it’s different from the plans. If you’re interested let me know and I can tell you the dimensions. Jim has flow’n the Mustang with an AXI 2212-12 with a 700 mah 30c 3 cell LIPO and it flew it with authority. Good luck with your Mustang, if you have any questions let me know.
Scott05/18/2010 at 2:12 am #48689riversParticipant
Where are you guys balancing the Electric Mustangs?
I’m about to start flying mine, which is also 6 panel, but with a 2-piece wing. 5/32 dia wire joiner. Will post pictures soon.
Dick05/18/2010 at 3:14 am #48690
I used a AXI 2217/9D motor with a 700 mah 30 C battery turning a 8.4-5 folding CAM prop on my past Mavericks. I plan on using the same on the Mustang. I had to add weight to the nose of my Mavericks. To combat the tail heaviness I cut into the pylon and the rear of the wing so the CG could be moved a bit further forward by shifting the wing back about an inch. If I build another Mustang/Maverick I’d kind of like to try a bit smaller stab area-wise to help with the tail heaviness.
I lost interest in Electric B over this past year because of the, what I consider, absurd rules. When Mike Roseberry and I suggested that we use radio cut off for motor and DT we came under very direct fire from flyers who hadn’t ever flown a high powered electric Free Flight that only had motor run increments in 5 seconds and a DT 5 seconds after the motor stopped. Yes I held the new Maverick for 2 seconds, had a 3 second high powered motor run and had to wait 5 seconds for the DT. Not a successful way to trim a very high powered Free Flight. Now that Larry Bagalini has provided a chip that can be programed to provide safe motor run in second increments and DT in second increments my enthusiasm has returned.
As I said before, I wish I had seen the 6 panel wing as I don’t particularly care for the look of the Mustang wing. I’ve got a lot of parts left over from previous Mavericks but I hesitate making any changes before I try the Mustang wing as it is. I doubt there is anything in my dislike of the wing other then the aesthetic of it. Your six panel just looks prettier to me. 😀05/18/2010 at 12:38 pm #48691
Dick, as far as the CG location goes it’s 80% of wing cord from LE for both the Maverick and the Mustang. Remember the Mustang I’m writing about in the thread is a gas powered version which has not been flown or tested yet, so it’s still a plane in development. Based on my first trim session it’s my opinion that it’s going to be a winner in both the gas and electric versions. The Maverick has already proven to be a fabulous flyer in its electric version and I’m in the process of powering one with a cyclone 061 for F1P. Should be as good a flyer as the electric version. Oldfreeflighter(sorry I don’t know your name) as far as balancing, I’ve never added any weight to the finished plane on the electric versions. Once the plane is complete I place the battery accordingly to get the proper CG than mark it’s position. Both Jim and I are planning on going to our flying field tomorrow if the winds don’t drive us off. I’ll let everyone know how the trimming goes.
Scott05/18/2010 at 4:21 pm #48692
Being an oldtimer it really bothered me to have that battery hanging off the bottom so I put it in the forward part of the pylon on end. Also being an oldtimer I feel that too often the CG is placed too far back. I also differ in that I always start by triming under power, not by gliding at all. Most of the time when I get the power safe, fast and consisitant, I then can put the airplane safely up high, with say a 5 second DT time. I then get an idea of what’s happening then I move on to progressively longer times before DT. 80% of the time only very small adjustsments need to be made to obtain the glide I want. Works for me when I am able to both control the motor and DT delay in second increments. This wasn’t possible with the timers that were available a couple of years ago. Thanks again to Larry Bagalini they are now.05/20/2010 at 4:00 pm #48693
Well had a chance last night to do some more trimming of the Mustang. After adding left engine thrust pwr. pattern is very good :D, right hand spirole climb with a flat transition to glide. ST 19 good pwr. but will change to ST 23 for more zing!!! Glide is very good, need to get on a bigger field to really see what it can do! Will let everyone know of the ST 23 performs on my next outing.
Scott05/20/2010 at 4:45 pm #48694
If you’re putting a bigger ST up front I’ll have to get a bigger AXI I guess 🙂05/24/2010 at 2:21 pm #48695
Well went out Saturday evening for a little test flying with the ST 23 mounted up front and exploded the right side of the wing into 3 pcs. 3-4 seconds into it’s pwr. pattern!!!! There is quite a difference in the pwr. generated between the ST 19 and 23!! And of course the pwr. type (torque, acceleration etc.) is quite a bit different between electric and nitro! Will have to look at different wing construction i.e. geodetic or “D” box for gas powered version.
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