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120 SR Blade (eFlite) 120 SR Helicopters Information and Help


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Old 06-09-2012, 07:33 PM   #1
edgeslade
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Default xtreme hopup question

while i was waiting to get new 5n1, i put on xtreme motor,swash,flybar and main shaft, already had 250 skids,boom support,blades cut and motor ziptied, i have 6 550 hyperion,and 6 nano tech 600 batteries, dosent mater which one ii use i get about 7min flight time with my stock 120 and about 2 sluggish min on my hopuped one, i cant figure out why?,, could i have gotten bad motor, and the 5n1 is brand new, all parts were
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Old 06-09-2012, 08:21 PM   #2
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Hows the gear mesh on the hopped up one?
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Old 06-09-2012, 08:45 PM   #3
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Good

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Old 06-09-2012, 09:38 PM   #4
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Back to basics then, pull the motor and put a stock motor in to see if it flies better.

While you have the motor out make sure everything else is spinning freely.

If that fixes it then you know the motor or the connection to the motor is the problem.

I don't have that type of motor but going by what I have learned form the old school brushed motors in rc cars, make sure the wires going to the brushes on the motor aren't hanging up the brushes, give them a little tug to make sure the brushes move freely.

Check to make sure you have a good connection at the battery and the motor.
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Old 06-09-2012, 09:40 PM   #5
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Another thing to check is the motor mount screws, make sure they aren't too long and hitting the armature inside the motor.
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Old 06-09-2012, 09:48 PM   #6
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i just put stock motor back on will check in morning to see if that's it
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Old 06-10-2012, 12:21 AM   #7
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I just looked at a picture of the extreme motor and it doesn't appear to have changeable brushes like the old school brushed car motors, disregard my advice about the brushes.
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Old 07-01-2012, 01:54 PM   #8
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ok , ive just installed the third BAD xtreme motor, they all came from valuerc on ebay, they have been pretty good as far as exchanging them out , other then slow on return shipping, but have yet to get one to work,one wouldn't even lift bird off the ground, the other two, perform very weak and loud compared two my two birds with stock motors!!! whats the deal? i have one bird close to stock with some miner hopups, the other with complete xtreme hopup,my xtreme bird flys way better than stock, and ive heard good stuff about xtreme products,even have a full setup for my mcpx waiting on shelf ,for when i crash it good and rebuild it, so why all these bad motors?
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Old 07-01-2012, 02:23 PM   #9
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Have'nt replaced the motor,but I would think there might be something else going on.Maybe a bad board? I have purchased a lot of Rakonheli parts off EBay, they look like good quality upgrade parts. I am goiing to replace the stock parts as needed .
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Old 06-10-2012, 06:25 AM   #10
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I broke a ball joint off the flybar ,so had order a new one.I replaced it with a carbon fiber/ aluminum one and also put an aluminum swash on it.Then I decided to go all out and upgrade almost everything.I just ordered aluminum blade grips,tail motor mount ,anti rotation collar,extended 8" boom ,vertical fin and a new canopy all in red.Cost a little over a$100,Am I crazy for spending this much on this bird?Should be pretty cool looking when the mods are done.Mike
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Old 06-10-2012, 10:16 AM   #11
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Its just bling, far as I'm concerned, long tail, throws center of gravity way off, all aluminum adds weight, and causes more damage in a crash, the swash and main shaft are worth it in my opinion

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Old 06-10-2012, 11:35 AM   #12
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Quote:
Originally Posted by edgeslade View Post
Its just bling, far as I'm concerned, long tail, throws center of gravity way off, all aluminum adds weight, and causes more damage in a crash, the swash and main shaft are worth it in my opinion

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I guess it's too late now everything has shipped,maybe I"ll just replace parts as I break them.LOL Mike
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Old 06-10-2012, 11:37 AM   #13
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thats what i do , i have a shelf full of aluminum upgrades for my mcpx that i haven't touched
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Old 06-10-2012, 11:45 AM   #14
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when i took the xtreme motor off i noticed on top of motor,there is two small brushes,where the wires connect, the one on the negative side looked to be barely touching, i removed brace bent inward, plugged motor in to dead battery and it jumped out of my hand, seemed to work fine, also the screws that came with,seemed to short so i used my stock motor screws, how should these brushes be positioned ?its raining here so cant get outside to fly
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Old 06-10-2012, 12:04 PM   #15
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I'm not sure what you mean by ''positioned'' the brushes make contact with the commutator to conduct electricity.
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Old 06-10-2012, 12:09 PM   #16
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how much tension should be on them barely touching, or pressing firmly against the commutator
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Old 06-10-2012, 06:18 PM   #17
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Yea, I'm gona contact seller to see if they will make it right, not gona hold my breath

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Old 06-10-2012, 06:32 PM   #18
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Do the X-treme motors really have a 50% failure rate?..I haven't tried one yet but I'm considering it. I haven't up to this point because I've been satisfied with the performance of the stock motors and they can be had for cheap...especially if you know where to look.

I'm always about to pull the trigger on getting an X-treme and then I read threads like this and I end up releasing the hammer back down slowly and putting the safety back on.
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Old 06-10-2012, 06:58 PM   #19
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There's an awesome xtreme motor coming out for the 120. It's called the 130x and the badside is it's almost $300 but the good side is it's super powerful and will allow your heli to do all sorts of new things. Also you can eliminate the fly bar, heck eliminate the whole 120. It's lke the ultimate brushless conversion.
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Old 06-10-2012, 07:05 PM   #20
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yes, it seems I've heard something about that

I hope it's all we're expecting it to be
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