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mCP X Blade Micro CPx Helicopters Information and Help


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Old 01-23-2012, 07:21 AM   #321 (permalink)
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Default Contact cleaner

If you go to a TV repair shop, and you ask nice, you may just be able to buy a 1/4 can of Channel Master control cleaner and lubricant. This stuff is the best you can buy.

My Dad used it in his TV Business for 30 + years. Works great on any trim pot, tuner and on micro servo sliders as well.
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Old 01-30-2012, 04:46 PM   #322 (permalink)
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After cleaning all 3 servos with isopropyl alochol it's better, but I sometimes still get a wobble/shake here and there after applying a lot of cyclic.

Those who have cleaned with DeoxIT, are you guys still getting the servo twitch/jitter with the mcpx just resting on a table? I'm still getting it even after cleaning with isopropyl alcohol.
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Last edited by rbader1; 01-30-2012 at 10:27 PM..
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Old 01-30-2012, 05:00 PM   #323 (permalink)
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After reading throughout this whole thread, here is what I've gathered on possible causes and fixes:

1) Servo pcb strips have dirt/carbon buildup. Clean using isopropyl alcohol or deoxit(cleans and lubes), deoxit gold(protects), deoxit f5fader(clean,lube, and protect for black carbon strip)

2) Use mCP X full canopy grommets on front aileron & pitch swash balls and half canopy grommets on rear elevator swash ball. Even on V2, replace the single o-rings on the front aileron & pitch swash balls...the single o-ring on rear elevator swash ball is okay

3) Main rotor hub dampeners are worn or not seated properly...replace

3) Feathering shaft is loose or bent...tighten or replace

4) Main shaft has up and down play...pop main gear back up

5) Main gear spun on main shaft...make sure flat spots aligned

6) Main shaft cracked...replace

7) Main shaft bearings worn...replace

8) Servo horns on pushrods...plastic holes connecting to swash balls are worn from crashes creating play in connection...replace pushrods

9) Servo retaining nuts on top of servos are loose...tighten by holding gear and turning nut at same time

11) Blade grip bearings...replace

12) Slop in blade grips...replace or use rubber band holding blade grips tight together or add shims

13) Blades unbalanced...balance using toothpick method and adding strips of tape to blade

14) Low headspeed - cycle batteries and cycle motor(brushes need to wear in shape of commutator)

15) Rebind 2-3 ft away, unplug battery, turn off Tx...then turn on Tx and then place mcp X on flat surface immediately after plugging in battery
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Old 02-01-2012, 12:22 AM   #324 (permalink)
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Where does a rookie like me find out the particulars about balancing the blades using toothpicks.

Thanks
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Old 02-01-2012, 11:14 AM   #325 (permalink)
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Quote:
Originally Posted by whodothevoodoo View Post
Where does a rookie like me find out the particulars about balancing the blades using toothpicks.

Thanks
https://www.helifreak.com/showthread.php?p=2803426
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Old 02-10-2012, 09:27 AM   #326 (permalink)
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If I may guys..this was the cause of my wobbles....

The swash plate and the link (and the other links I tried) are BRAND NEW

A little bit of shrink tube to prevent that lateral slop, seen on the pitch link the other side (red) immediately cured the wobbles

EFLITE BLADE MCPX PITCH LINK TO SWASH PLATE LATERAL SLOP.... (0 min 24 sec)
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Old 02-10-2012, 11:49 PM   #327 (permalink)
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Default Did my MCPX tonight

Watched a video on youtube and the guy used a cut off paper match to scrub the contacts clean, It is just the right tool for the job. Flies dead steady now, was twitching around a bit before

Nice post! Thanks for the insight.
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Old 02-12-2012, 12:13 PM   #328 (permalink)
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Quote:
Originally Posted by RedOctobyr View Post
If you are using the blades with the "bullets" on them, look underneath each bullet, to make sure the weight is still in there. It's possible you lost a weight.
I just experienced this. Couldn't figure out why I got the wobble without changing anything. Sure enough, one of the weights fell out of the bottom of the bullet.

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Old 02-15-2012, 07:41 AM   #329 (permalink)
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Default quick and easy tail boom support

My tail boom was bouncing up and down right away on the first flight, especially
with the more powerful Hyperion battery. I made a quick one-piece tail boom support
that cured the bounce. I know I could have order a new gear with boom supports but
this quick solution worked. A couple electrical connectors, a stick of carbon fiber rod
and some heat shrink tubing. Hole in electrical connector slips over the gear post.
Boom fin is a piece of PET plastic.
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Old 02-19-2012, 05:01 PM   #330 (permalink)
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Default Very nice and usefull tips

Thank you and YES!!! very usefull tips for the incredible Blade MCPX problem......
Quote:
Originally Posted by OnTheSnap View Post
Awesome tip Chris. Looking for your next sticky "How to turn your MCPX into a 4500 RPM Hotrod".
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Old 02-20-2012, 02:09 AM   #331 (permalink)
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Glad this post is still helping people

Actually ... I should clean my servos soon
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Old 02-24-2012, 09:12 PM   #332 (permalink)
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Is it normal for my tail to shake left and right about an quarter inch sometimes it doesn't seem to affect flight but when my battery starts losing power my tail starts to drift left any suggestions or ideas ?
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Old 02-27-2012, 09:14 PM   #333 (permalink)
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Finally went to Radio Shack and bought some Deoxit. Cleaned the servos...man those screws are small and the plastic on the servo frame they go into strips easily! Anyway, one of the aileron servos was really dirty with carbon and the others had a fair amount. Got everything back together using some slightly larger and longer screws on the ones that stripped. Flew really smooth for three flights and now has developed a very slight pitch bobble. The tail wags up and down quickly, but it doesn't seem to affect flight. Any ideas?
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Old 02-28-2012, 10:33 AM   #334 (permalink)
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Pitch bobble is most likely a fore/aft balance problem. Play with the battery position?

Tail problems have disappeared for me with a SHORTER tail.

I've gradually broken it off from 5.5 inches to now, only 4 inches!

Flies better than ever. It seems counter intuitive, and many were increasing tail boom length as did I. But, I see it as giving better feedback for the gyro. With a longer tail, I had wag. I think the gyro was not getting a strong diversion signal, so the tail swings back and forth. I saw shorter = less wag, Shorter still = no wag.
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Old 02-29-2012, 04:38 PM   #335 (permalink)
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Good thought on the balance, but I have not changed that since it was flying well. Ended up checking the blades and one was tighter in the grip than the other. Loosened the tighter one and it flies fine now! Thanks for your suggestion.
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Old 03-01-2012, 09:06 AM   #336 (permalink)
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Interesting. The lead/lag pivot too tight caused a fore/aft bobble, I would not have thought that, but there it is.
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Old 03-01-2012, 06:47 PM   #337 (permalink)
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I had a bad intermitted wobble. Turned on flight hold and saw that one servo was twitching up and down a ton. I read this a while back so I gave it a try.

Now my baby is flying perfect. Thanks man!
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Old 03-04-2012, 10:11 PM   #338 (permalink)
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use a potentiometer cleaner with a lubricant in it and all will be fine. Most pots are not shielded in stereos etc. Clean with rubbing alcohol if you want but also clean it with a pot cleaner with lube.
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Old 03-05-2012, 04:17 PM   #339 (permalink)
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A lot of guys use DeOxit. You can find this at Radio Shack.
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Old 03-05-2012, 09:15 PM   #340 (permalink)
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Quote:
Originally Posted by turboomni View Post
use a potentiometer cleaner with a lubricant in it and all will be fine. Most pots are not shielded in stereos etc. Clean with rubbing alcohol if you want but also clean it with a pot cleaner with lube.
What would happen if I used a fiber cloth for cleaning glasses to clean the servo strips
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