Originally posted by Hugh Wiedman
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I used to do that with cheap HobbyKing planes but those things are many hundreds of bucks each. If this were the auto industry, they would never get away with bad parts availability. With hobby parts, anything goes.Originally posted by radfordc View Post
It's just that they have such nice planes (Su-30 and Viper 90 for example). We just need to be able to buy 2-3 planes each when they're available!
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Finally got around to finishing the double battery mod and put some rare earth magnets and an X-Acto blade with the sharp end ground down as the hatch closer. I was also able to balance it at 150mm using either 2 SMC 4500's or 2 SMC 5300's, so we'll see which combo works best.
Hopefully the weather will improve and I can give it a shot sometime next week.
But no matter what, I'm done modifying this thing.
So far changed to the FMS fans, swapped out 2 RC Geek burners to use his latest slimmer ones, reinforced the nose gear and the base of the nose gear strut with carbon fiber square tubes, changed the nose wheel to a Hangar Nine 2 1/2" Pro-Lite wheel to help on grass and imbedded carbon tubes on each side of the fuse in the front battery bay because for some reason, they terminated over the nose wheel and I was getting some initial cracks at the beginning of the battery bay. For now I'll fly it as I did before with flaperons, but put each elevator servo on a separate channel to ultimately go to tailerons. That's going to require some funky mixing to keep the AR8360T gyro working correctly so I'll deal with that at a later date.
Hugh "Wildman" Wiedman
Hangar: EDF's: Mig 29 TV "Cobra", A-10 Arctic, SU-27 90mm 8S:F22 Red Lion/EuroFighterBronzeTiger/F18 Canadian & Tiger Meet/F16/F4 Jolly Rodgers & Blue Angel, 80&90 TV Avanti, Viper, Stinger 90. Props: 1600 Corsair & Spitfire, B-24, 1700 P-51, 60" Beast & P2 Bipe, Extreme Flight-FW-190 Red Tulip, Slick 60, 62" Extra 300, 62" MXS Heavy Metal, 62" Edge
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As xviper stated, the E-Flight version sold by HH had the anemic E-Flight fans in it (2860-1850 Kv 9 blade inrunners), but they forgot to include the gerbils to make them go any faster. 🤣 The version sold in Europe by FMS had their fans in it (12 blade 3060-1900 Kv inrunners), a significant upgrade over the HH version.Originally posted by nuts-n-volts View PostDoesn't this a/c already come with FMS fans?
By my estimation, the FMS fans provided as much as 30% more thrust, making it a day/night difference. With the old fans, barely got off grass and labored going vertical. FMS fans cut take off distance in half and gave very good vertical performance. The stock HH version was a pig.Hugh "Wildman" Wiedman
Hangar: EDF's: Mig 29 TV "Cobra", A-10 Arctic, SU-27 90mm 8S:F22 Red Lion/EuroFighterBronzeTiger/F18 Canadian & Tiger Meet/F16/F4 Jolly Rodgers & Blue Angel, 80&90 TV Avanti, Viper, Stinger 90. Props: 1600 Corsair & Spitfire, B-24, 1700 P-51, 60" Beast & P2 Bipe, Extreme Flight-FW-190 Red Tulip, Slick 60, 62" Extra 300, 62" MXS Heavy Metal, 62" Edge
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Finally put the video together on the maiden flight with the dual batteries. After 2 years of fighting with this thing, it's finally worth flying. The FMS fans are a must, but equally important is converting to dual batteries. I'm able to fit either 2 SMC 5300's (each at 684gr) or 2 SMC 4500's (each 588gr). The only difference I found, other than longer flight times, was that with the 5300's it was a bit "heavy" when landing. Oddly enough, take-off distance and vertical was nearly identical. So obviously I need to do some more testing (at least that's the excuse I've given my CO)!
Hugh "Wildman" Wiedman
Hangar: EDF's: Mig 29 TV "Cobra", A-10 Arctic, SU-27 90mm 8S:F22 Red Lion/EuroFighterBronzeTiger/F18 Canadian & Tiger Meet/F16/F4 Jolly Rodgers & Blue Angel, 80&90 TV Avanti, Viper, Stinger 90. Props: 1600 Corsair & Spitfire, B-24, 1700 P-51, 60" Beast & P2 Bipe, Extreme Flight-FW-190 Red Tulip, Slick 60, 62" Extra 300, 62" MXS Heavy Metal, 62" Edge
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Tested out my Coddar HV 6000mah 80C LiPos in the SU-30 yesterday. I do have the upgraded fans in there from FMS. I flew it hard on purpose, with the timer set as before when flown with the regular LiPos. Came down with only a bit more left in the battery than usual, BUT the battery was hot although not any hotter than with the regular LiPos. The increase in take off punch was noticeable and (IMO) significant. It could do loops far easier from a level start whereas before, I had to dive it to start the loop. With the battery weighing so little compared to the CHL 5000s, it had to be placed as far forward as possible but then the wires wouldn't reach so I had to move it back and flew it more tail heavy than usual. The plane didn't seem to care and with a little UP trim, it flew just fine. When I need more batteries, I'll get the Coddar HV 7000mah, 120C ones. They are expensive but may be worth it and they weigh about the same as the CHL 5000s.
Perhaps when SMC starts selling their HV bats, they'll be priced a bit more reasonably.
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Sounds like a good battery. But, it also sounds like you're not up to the level of the dual battery setup. Hot batteries and hot connectors mean you are using electrons to make heat instead of making thrust. If you're not getting 500+ ft diameter loops you need to come to the "dark side" and go dual battery.Originally posted by xviper View PostTested out my Coddar HV 6000mah 80C LiPos in the SU-30 yesterday. I do have the upgraded fans in there from FMS. I flew it hard on purpose, with the timer set as before when flown with the regular LiPos. Came down with only a bit more left in the battery than usual, BUT the battery was hot although not any hotter than with the regular LiPos. The increase in take off punch was noticeable and (IMO) significant. It could do loops far easier from a level start whereas before, I had to dive it to start the loop. With the battery weighing so little compared to the CHL 5000s, it had to be placed as far forward as possible but then the wires wouldn't reach so I had to move it back and flew it more tail heavy than usual. The plane didn't seem to care and with a little UP trim, it flew just fine. When I need more batteries, I'll get the Coddar HV 7000mah, 120C ones. They are expensive but may be worth it and they weigh about the same as the CHL 5000s.
Perhaps when SMC starts selling their HV bats, they'll be priced a bit more reasonably.
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I know, I know. I envy you guys who have the dual battery set up but I really hate to lose that speedbrake. Maybe over the winter, I may say "To heck with the speedbrake" and go for the dually.Originally posted by radfordc View Post
Sounds like a good battery. But, it also sounds like you're not up to the level of the dual battery setup. Hot batteries and hot connectors mean you are using electrons to make heat instead of making thrust. If you're not getting 500+ ft diameter loops you need to come to the "dark side" and go dual battery.
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I said the same thing for way too long. Your comment of "It could do loops far easier from a level start whereas before, I had to dive it to start the loop", was oh so true for me as well, but the FMS fans and dual batteries made that a thing of the past. Just go to 2:25 to 2:45 on the video I posted where I'm able to take off of rough high grass of over 1" (our runway has gone to hell over the last year, mostly weeds, bumps and tall grass-gone are the days of 1/2" and smooth surfaceOriginally posted by xviper View PostI know, I know. I envy you guys who have the dual battery set up but I really hate to lose that speedbrake. Maybe over the winter, I may say "To heck with the speedbrake" and go for the dually.
thanks to our outstanding Board of Directors) and immediately going vertical. With the current state of our runway, before the fans and dual batteries, I would have never even attempted taking off on these current conditions, let alone immediately going vertical. And this video was using the heavier 5300's instead of the 4500's, which added an extra 200 gr. Packs came down barely luke warm.
And radfordc , what do you mean the "dark side". You've shown me "The Light"
Hugh "Wildman" Wiedman
Hangar: EDF's: Mig 29 TV "Cobra", A-10 Arctic, SU-27 90mm 8S:F22 Red Lion/EuroFighterBronzeTiger/F18 Canadian & Tiger Meet/F16/F4 Jolly Rodgers & Blue Angel, 80&90 TV Avanti, Viper, Stinger 90. Props: 1600 Corsair & Spitfire, B-24, 1700 P-51, 60" Beast & P2 Bipe, Extreme Flight-FW-190 Red Tulip, Slick 60, 62" Extra 300, 62" MXS Heavy Metal, 62" Edge
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If anyone is interested, i know where there's a brand new EFL SU-30 bnf in the box on the shelf is...
I finally maidened mine a couple of weeks ago after looking at it on the rack for the last 15 months. I don't know why i waited so long to fly it - what a fun bird... got 3 flights on it with 0 damage... :)
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It's discontinued. It's already very large and was quite pricey for a foamie jet. Ask why it got discontinued. I would guess that it barely sold and when warehouse stock was gone, that was it. If they were to bring it back as an even bigger plane, it would have to be a twin 80 or 90mm since the stock 70mm was just adequate to push it through the air for a short 2.5 to 3 minutes. Modifications were needed to make it fly better and longer. A bigger, more powerful, longer flying new one would be so expensive, it likely wouldn't sell at all. Horizon isn't likely to make an even "bigger" mistake. I don't think they'd be that dumb. They got away with the first one selling what they made and went away wiping the sweat off their brow and a big sigh of relief, knowing that many hobby shops still have some units wasting away on their shelves and NOT Horizon's warehouse.
I like mine. It's just the right size, but it needed work - more powerful 70's and the addition of a second battery (yet to come) to make it nearly "perfect".
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I get a kick out of all this. HH will discontinue any plane that drops below expected sales for profit, Then after a year or so bring it back as a Version two, which most will buy up. Remember the Crappy 2.1 T28 the second Version off that one was a bust, And in my opionion was an awesome and very impressive looking plane, on the ground and in the air but was the biggest piece of crap I ever had given to me the retracts were to light and did not work 50% of the time and the wiring was nothing but a big bucket of worms I flew it four times repaired as needed not due to any thing I did to it but was to give it away to some one who really wanted to see how they flew. I still fly the H out of my SU 30 and now it has been replaced with the Mig 29 Fulcrum WHOOO HAAAOriginally posted by jasmith41 View PostHugh, you just made me really want to sell my Draco too... :)
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Wow I am so stoked with your work Hugh. Not only the looks but the way it flies. It seemed very well behaved . By the way when you used larger wheels did you need to modify the retract pockets at all?
Something I have wondered about when going to dual EDF's If you had originally say an 80 would you gain anything by hoing with dual 64's or 70's.
I ask in the event of space availability in a smaller airframe.
Cheers
Bob
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