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Roban A-10
I installed two Schubeler 70mm fans in my nitro planes A-10 with two 4 cell 4500 batteries and the thrust to weight was phenomenal! I am hoping that I get the same performance from the 120mm fans. The 70mm also have the distinct whine that Hawg has right after a break. (After you've had Hawg come to your rescue a few times, it's a sound you'll never forget!) The Schubeler fans need no balancing nor special mount instructions. I received my aircraft, but the fans will be a few weeks behind it. I'm not going to build until fall though. I am planning on trying to modify the flaps to be fowler with internal linkage. I ordered new wheels and dreamworks electric brakes as well. I've installed them on my King Air, Viper and Velocity and they work very well on slowing down those hot touchdowns.
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Roguemonkey - Sounds great! If you have your airframe, could you post some pics of the nacells, fan fountaing area, and the trust tubes that came with the kit? I love the Schubies, but I'm looking at the Jet Fan 110's very closely too. I could do double duty with those fans as one could go in my HSD F-16. Performance is said to be better than thier 120mm fan. I'm watching a few threads on the fans.
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I'm very interested in this one as well- I think I'll wait for a flight report also, and am curious what motors will be used- 4x6S 5000 does seem heavy, but with the right fan/motor combos, who knows? The extreme from BVM is just too far out expensive, so this one could really happen- I look forward to your input!
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Wing loading on this will be fine with 4x6s 5000. With the JF 120mm or the new JF 110mm, you could easily do a 5s setup. This thing will cruise around quite scale like at half throttle I imagine. I have a 3DHS 91" Yak 55 on 12s and it's a beast. A plane this size will be fine.
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What do you think of the JF 120+ Het 590? I'm concerned about power and balance on the CS fans- I assume I can make the JF's fit.... I've had smaller edf's, habu and a super sniper- and the requisite foamy ones- I also have some twin experience with an 83 inch electric P-38 (hardly an arf- needed a ton of mods) I want to build it right, and reliable. |
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I was looking at the 590 because it would work on 10 or 12 cells.
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Roban A-10
Tim, unfortunately I am unable to take pics to post at this time. I'm deployed at the moment and won't be building mine for quite some time. I wanted to get the airframe just in case the stopped making them before I return. I opted for the green, but the more I look at it, I wish I had purchased the grey. I also selected this fan due to the fact that I'm looking for scale and flight time more than speed. http://www.shop.rc-electric-jets.com...SM6740-650.htm
I was hoping someone else would post pictures so I could continue buying the right components. I'm still up in the air on which servos to place in it. RC Aerodyne says full size but didn't give a recommendation. Due to the money I've already dropped in it, I intend to place a quality servo in it, but want to keep a LV servo in it and don't want to laden it down due to the amount of wiring and four batteries that are already the mandatory minimum. |
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2500 for the fans and motors, as great as they may be, puts this out of my price range-
As for servos I love my hitec 7955's- I use them in almost everything 50cc on down. Never had a failure, nor bad one out of the box- can get them as low as 80.00 and sometimes Chief does an even better deal if you buy 4, or 5.... I can't remember- there's always the Tower 60 off 379 in the club, but they cost more there per usual.... I'm up to about 3500 in my head with airframe, servos and the one ESC I need (cc 160) and motors, if I use stock fans. Know anywhere I can send to balance them? (EFLUX says don't bother asking) RM- thank you for your service |
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I still need to crunch some numbers to really decide. Schubi is my first choice, but mega bucks (worth every penny). JetFan EDFs are right up there and more affordable. I'm really looking hard at the JF 110 too. I swear... trying to decide on fan/motor combos is like looking at a menu at a restaurant where EVERYTHING is good and no matter what you pick, you second guess yourself. At this point, the positive in my favor is that I don't have the airframe yet, so I have time. Also, I want to see the motor/fan combo performance in the prototype video before I really decide. I do know one thing... I will NOT be using the Changesun fans. I have one and have not used it in anything. Those fans shed blades big time a while back. They may have got thier act together, but it's not worth it on a big, beautiful Hog. |
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Well put Tim- I think this will be next years winter project.... I'll pick up the airframe and slowly build out the parts I need- easier on the wallet this way, as well as picking motor/fans later after someone has it going- I will consider the schublis now, as I'm in no rush to buy-
Anyone have experience with combos in the area of this weight model? For my P-38 I had a great motor ESC prop combo on a single engine model a little more than half the weight, and it turned out great doubling it up- |
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Maybe
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I was also concerned about the changesun so I talked to Cliff at Aerodyne and said he had not had any issues with them. He said the prototype was using them with no issues. I picked up a pair with a 5052-500KV mounted and balanced so will see how they do in testing.
JD |
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Roban A-10
Pat/Tim,
I know they are some pretty expensive fans, but I don't want to buy twice or take a chance of failure with this project. The main thing is that this is a silent project honoring the many times that Hawg came to our rescue in the Tegab valley in 2013. I want to make it fly right as well as sound right. I am also using CC 160 amp esc's with the CC 20 amp pro BEC. Servos are the last items I have to purchase for this project. I was curious if I could fowler hinge the inboard and outboard flaps and have the Hitec slim servos actuate them internally. I also think I will leave out the lights. I like scale, but lights have never been a strong interest with me. I'll have an additional 2S 1200 mah battery for the electric brakes. As long as I get at least 8 minutes of flight out of it, I'm happy. I have a jet fan 90 in my Viper and although it does the job, it could use the upgrade. It only gets three minutes of flight and one minute for the go-around. If you can't get it down within four minutes, murphy takes over the controls. |
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Guys the new DS86 (120) is available, waiting on a pnp version for my new L39,
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