Originally posted by Airguardian
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Official Freewing MiG-29 Fulcrum Twin 80mm Thread
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Originally posted by Sleepdog View Post
So... How did you power the PM (or MKS) upgraded servos? They call for 2S lipo, not 5.1v from the BEC? i have HV servos in most of my planes, but use a 2S lipo direct to the rec'r to power them all. How did you go low voltage on other flight controls (BEC), but HV on just the elevators/tailerons? I'll be using a Spektrum 10 chl receiver and bypass the MCBe for all but the gear and lights. Sorry to keep asking the same question, but not getting it.
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Originally posted by Sleepdog View Post
Anybody able to answer?Hugh "Wildman" Wiedman
Hangar: Mig 29 "Cobra", 8S EuroFighter-Bronze Tiger, A-10 Arctic, F18 Canadian & Tiger Meet, 8S F16 Wild Weasel, 8S F4 Jolly Rodgers & Blue Angel, 1600 Corsair & Spitfire, B-24, Stinger 90, Avanti. Extreme Flight-FW-190 Red Tulip, Slick 60, 62" Extra 300, 62" MXS Heavy Metal, 62" Edge Demonstrator. FMS-SU-30,1700mm P-51, Corsair, Viper, Beast Bi-Plane 60", P2 Bi-Plane, P51.
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Originally posted by Sleepdog View Post
So... How did you power the PM (or MKS) upgraded servos? They call for 2S lipo, not 5.1v from the BEC? i have HV servos in most of my planes, but use a 2S lipo direct to the rec'r to power them all. How did you go low voltage on other flight controls (BEC), but HV on just the elevators/tailerons? I'll be using a Spektrum 10 chl receiver and bypass the MCBe for all but the gear and lights. Sorry to keep asking the same question, but not getting it.
Example: On my Su-35, everything is powered at HV straight from a 2S LiPo, but I have a 4ch SBUS decoder where the red and black leads that plug into the rx have a BEC installed in series. This way, anything powered through that decoder will run at the BEC tension.
Alternatively, you'd need to solder a special wire harness so that the output from the battery goes through the BEC and to the aircraft, but you take a couple of leads that plug straight into the red/black wires of the servos. So the servo only sends a signal wire to the receiver. Of course, there needs to be a common ground, or otherwise the signal circuit won't close, but since the LiPo/BEC ground also plugs into the receiver, it should be fine.
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Originally posted by Sleepdog View Post
Thx...what output voltage are you setting in the Castle?Hugh "Wildman" Wiedman
Hangar: Mig 29 "Cobra", 8S EuroFighter-Bronze Tiger, A-10 Arctic, F18 Canadian & Tiger Meet, 8S F16 Wild Weasel, 8S F4 Jolly Rodgers & Blue Angel, 1600 Corsair & Spitfire, B-24, Stinger 90, Avanti. Extreme Flight-FW-190 Red Tulip, Slick 60, 62" Extra 300, 62" MXS Heavy Metal, 62" Edge Demonstrator. FMS-SU-30,1700mm P-51, Corsair, Viper, Beast Bi-Plane 60", P2 Bi-Plane, P51.
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Originally posted by Hugh Wiedman View Post
I'm powering everything, including the PM elevator servos and the TV nozzles by bypassing the stock BEC and using the Castle 20 amp BEC. My flying buddy has the exact same setup on his and they both have worked flawlessly since day one. I'm also using the 10 channel AS3X AR10360T RX along with a separate Hobby Eagle gyro on the TV nozzles. The ProModeler DS 150's are smooth as silk. Also upgraded the elevator control rods with the Hangar Nine titanium rods as I noticed the upgraded rods MRC sent out still could bend. Not the titanium rods! If you set up tailerons, you won't need a servo reverser with the PM servos for the elevator. If you do not, PM also sells a small suitable reverser to plug in line.
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Originally posted by ElCid View PostSo, i maidened my Mig today and TBH it was a lumber pig and had a hard time climbing. I am thinking i might need to re set my ESC's, thoughts?
Flew with 5100mah Carbon cells
it is still one of my favourites, but you won't be hovering.
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Originally posted by Evan D View PostI agree. Heavy batteries, heavy plane, flies scale. I would not call mine lumbering even with the older fans.
BTW has anyone seen any negative effect charging them to 4.35v vs 4.2v? Is there enough overhead in the ESC's to take the additional voltage?
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Originally posted by ElCid View Post
Yea i wouldn't have though so but it felt really sluggish. It got airborne but the rollout took forever. I will give my TV setup a look and see if I have the nozzles point down a bit (ie driving the nose down). I am going to use the SMC5300 HVLV packs from now on they are 110g lighter than the Admiral 5100 carbons.
BTW has anyone seen any negative effect charging them to 4.35v vs 4.2v? Is there enough overhead in the ESC's to take the additional voltage?
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Originally posted by Alphonso View Post
The TV nozzles do point down very slightly compared to stock at they're marked neutral position. You don't say which version you have. Is it the latest one with the 2150kv motors? Not quite the thrust of the FMS fans I fitted but a big improvement over the older ones.
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Originally posted by ElCid View Post
I got it about 10 months ago so not sure. I'll crack it open tomorrow and let you know. Which fms fans are you referring too? Can you shoot me a link?
All this being said, before laying out more money merely on my say so, check and double check your setup as plenty of guys are more than happy with their stock Migs. My opinions are relative as all my other FW single fan planes are 10 and 12S and I'm likely being silly trying to get similar performance from this otherwise excellent model. Plus my other twin 80mm ( A10 ) has more power than it needs, even with stock 9 blade outrunners.
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