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Walkera Master CP - 200 size FBL helicopter - 6 Axis Gyro










Overview:

This is a 200 size FBL helicopter with a 6 axis gyro. It uses two brush motors.
It is a 3D helicopter for beginners. It is extremely stable and said to be ultra durable and easy to maintenance.
It has plastic blades with a CF rod inside to reinforce the blade.
This is a bigger size helicopter than the micros (about twice the size) and has a big motor
and blades that are sharp. You don't want to get cut by them so be careful.




First Impressions:

The helicopter looks sharp. It feels well built.
The canopy is mounted securely and is easy to remove.
The main motor is the biggest brush motor I have ever seen. It is the motor from the 400 size helicopter so it should have good power on this hel.
The tail motor is large also. It has a cover on it that slides off and the motor has connectors on it for fast replacement.
The wiring is done very neatly.




First Flight:

I setup the TX with my own settings and checked out the heli.
The swash was at zero degrees pitch mid stick and had equal travel for positive and negative pitch. Also the blades were balanced and tracked well.
I throttled up and took off slowly as I haven't flown a heli this big in a long time and also don't know how the heli will handle.
It is ultra stable! It was like flying my Mini CP but even more stable with the 6 axis gyro and the large and heavy size of it.
The second flight I was able to fly around pretty well about as good as I can with my Mini CP or mCPX.

The Master CP has a sound like a T-Rex 250. I thought I was flying a T-Rex by the sound of it.




Pros:

• Ultra stable, responsive, and smooth flying
  
• RX Firmware can be updated
  
• Good flight time (About 5-6 minutes scale flying)
  
• Built well and easy to work on. The wiring is done very neatly.

Cons:

• Servos are stripping easy.
  There is a thread about this.
  Start on the last page and work your way back.
  There are pages scattered through the thread about the servos stripping: http://www.rcgroups.com/forums/showthread.php?t=1664447
• 1-2 second delay when you engage the throttle hold.
• Many Master CPs will not accept Fixed ID binding at all where ELV servo is plugged in or
  not with the Stock factory servo.
• Telemetry feature won't work unless you update the firmware.
  You will need to buy adapters to do this and download firmware from Walker's web site.
  

Important Note:

There is an issue with the Master CP that you need to know about.
"When you hit throttle hold there is a 1-2 second delay when you engage the Throttle Hold.
When you hit the throttle hold switch the helicopter keeps on spinning at speed for almost 2 seconds.
This is causing severe damage on impact as the helicopter is still going at speed".

I have tested this on my Master CP (the one for this review) and I confirm there is a 1-2 second delay when you engage the Throttle Hold


See this post: https://docs.google.com/document/d/1...f1o/edit?pli=1




Transmitter Setup Guides:

http://www.rcgroups.com/forums/showthread.php?t=1325037




Head Speed: - Stock brush motor

• 4,140 RPM at mid stick 100% throttle with the stock battery.

Thrust: - Stock brush motor

I couldn't measure this as the heli was too heavy for my scale.
Without the battery I could have measured the thrust though.
WIll have to get a higher capacity scale for these bigger helicopters.




Flight Time: - Stock battery charged four times. Walkera says 7-9 minutes flight time.
I think I could get one more minute or more of flight time as I only put back in 616 mah into the battery which
I could have went down to 800 mah using the full capacity (1,000 mah) minus 20 % rule.

• 2 Minutes: 11.5V (3.85V per Cell)
  
• 3 Minutes: 11.3V (3.79V per Cell)
  
• 4 Minutes: 11.2V (3.73V per Cell)
  
• 5 Minutes: 11.1V (3.70V per Cell)
• 616 mah put back into the battery at 1C (1,000 mah) charge rate. 44:13 minutes to charge.

Telemetry:

I have found out that using the telemetry eats up the battery time.
I went from 5 full minutes of flight time on my Master CP with telemetry
inhibited in the TX to 1:25 minutes flight time with the telemetry enabled.
I found the same thing with my Mini CP, 1:25 minutes flight time with the telemetry enabled and
3 minutes flight time with the telemetry inhibited.
My friends Mini CP had the same results as I did with telemetry inhibited and enabled.




Specifications:


1).Main Rotor Diameter: 462mm
2).Tail Rotor Diameter: 113 mm
3).Overall Length: 440mm
4).All-up Weight: 420g (Battery included)
5).Battery: 11.1V 1000mAh Li-Po
6).Moril Motor: 380PF
7).Tail Motor: 1627PF
8).GYRO: 6-axis
9).Receiver: RX-2637H-D
10).Servo: WK-7.6-6
11).Transmitter(standard) - DEVO-7E
12) .Transmitter(Optional) - DEVO-6/7e/8s/10/12s






Final Thoughts:

I had a fun time flying this helicopter and was surprised how ultra stable and smooth flying it was.
It looks sharp and seems to be built well. It has decent power.
When I get more use to it I will make some videos flipping and inverting it.
Also I don't have any spare parts and there is the servo stripping issue.





Bob at HeliRCStore sent me the Master CP to review at my request.

Thanks Bob for sending me the helicopter!


http://helircstore.com/



Tom





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Servos:

I will be adding information here on the servos from what people post in this thread.
This way it will be easy to find and won't get buried in pages of posts.


Update 1/1/13 - Mod Servo for Master CP - Using Emax ES08A Servo

http://www.rcgroups.com/forums/showp...&postcount=182



Update 9/28/12
Update 10/4/12
Update 10/11/12
Update 10/12/12

http://www.rcgroups.com/forums/showp...1&postcount=10

http://www.rcgroups.com/forums/showp...3&postcount=11

http://www.rcgroups.com/forums/showp...1&postcount=14

http://www.rcgroups.com/forums/showp...5&postcount=15

http://www.rcgroups.com/forums/showp...3&postcount=25

http://www.rcgroups.com/forums/showp...7&postcount=71

http://www.rcgroups.com/forums/showp...9&postcount=74


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Walkera Master CP - Complete Overview 1 (3 min 25 sec)

Walkera Master CP - Complete Overview 2 (3 min 52 sec)

Walkera Master CP- Close-ups (1 min 27 sec)

Walkera Master CP - First Day Flight (0 min 56 sec)

Walkera Master CP - Third Day Flight (1 min 3 sec)

Walkera Master CP - First flight in a field (1 min 28 sec)

Buildem336 (Manuel) flying the Master CP 100% stock out of the box
using the TX settings I listed above in my TX sticky.

Walkera Master cp 3d flight (2 min 51 sec)

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Nice job Tom. I have a feeling you are going to love flying this heli once you have a chance to take her to a park and really air it out.

on what cases do servo stripping occur? after reading your cons on this heli, it made me think again if im going to buy one.

Originally Posted by xtian3188

on what cases do servo stripping occur? after reading your cons on this heli, it made me think again if im going to buy one.

Servos have been known to be stripped straight from the box.
Plastic swash, too, quality!

I have a V400 which shares a few of the same parts, and by the time it was upgraded with metal gear servos and brushless stuff I could've just bought something decent like a Gaui x2 or even a Trex 250 off the bat.

This just stinks of Walkera crap like most other things they churn out.

I have stripped one servo just by examining it by hand. 4 other servos were discovered to have stripped on routine checking, even though the heli was flying normally. Although I had a few crashes onto tall grass, there was no damage to the rest of the heli. At least one incidence of stripping was not associated with any prior crashes. My worry is that just doing mild 3D is enough to strip a servo. Replacement servo gears were available on HobbyOne at one stage but has since been delisted.

What we really need is a list of compatible servos. This would be the ideal thread to do so. Besides having the correct dimensions, the servos should move in the same direction as the stock servos. We would also like to know how much if any cutting or filing is required to fit them.

Servos are stripping in a crash which can happen with any helicopter even
with metal gears but these seem to strip too easy from the posts I have read
from different people. Also the servos have been stripping just by moving them by hand.

This sounds like there is a problem with the servo gears.
"HobbyOne has sold out nearly 100 replacement servo gears within two days".

When doing my reviews I report everything I know good or bad.
I keep the reviews updated on any problems or issues.

The Mini CP had big problems with the servos stripping very easy.
I followed this closely in my Mini CP review. Walkera improved the
servos a few times by making them stronger. Different color sharpie
marks are on the the servo end plugs. This identifies the servo gear improvements.
Think of it as V2, V3, V4 of the servo.
I think Walkera will do this for the Master CP also.


Here are a few posts on the servo issues.
I am not telling people to not buy the Master CP because of this.
I am just reporting what I have read about them.



http://www.rcgroups.com/forums/showt...6#post22665977


http://www.rcgroups.com/forums/showp...&postcount=380


http://helifreak.com/showpost.php?p=...1&postcount=16




Tom

Here is another post on this, just want to make sure that it is not only me reporting this issue. Anyway, the problem with these servos is well known with users of the 4F200 and V200D03.

http://www.rcgroups.com/forums/showp...&postcount=438

I have the Mini CP and I have stripped servos only 3 times in 249 flights despite much harder flying and crashes. In contrast, I have stripped servos 6 times in 23 flights with the Master CP.

Originally Posted by zadaw

I have stripped one servo just by examining it by hand. 4 other servos were discovered to have stripped on routine checking, even though the heli was flying normally. Although I had a few crashes onto tall grass, there was no damage to the rest of the heli. At least one incidence of stripping was not associated with any prior crashes. My worry is that just doing mild 3D is enough to strip a servo. Replacement servo gears were available on HobbyOne at one stage but has since been delisted.

What we really need is a list of compatible servos. This would be the ideal thread to do so. Besides having the correct dimensions, the servos should move in the same direction as the stock servos. We would also like to know how much if any cutting or filing is required to fit them.

If you post a list of compatible servos in this thread I will add it to the review.
This way it will be easy to find and won't get buried in pages of posts.

I will also keep the review updated on this servo issue.


Tom

Originally Posted by dkfuji

Nice job Tom. I have a feeling you are going to love flying this heli once you have a chance to take her to a park and really air it out.

Thanks Darryl.
I am looking forward to taking it out in the field and see what it can do including flips, rolls, loops, and inverting.


Tom

Tom;
The Hitec hs5055 metal geared servos are a great replacement.
They are a direct replacement, require no RX reversal, and take crashes well.
I've had some serious hits with my V400 and they have held up just fine.
Provided Walkera haven't change the construction of the 7.6-6 servo the Hitec's are great and just require a tiny, test tiny bit of reaming to the mounting holes.
I used twisted wire to mount mine, so didn't need to modify them in any way.

Originally Posted by Tom Z

If you post a list of compatible servos in this thread I will add it to the review.
This way it will be easy to find and won't get buried in pages of posts.

I will also keep the review updated on this servo issue.


Tom

Tom, this is what I have come up with reading through the thread. But it seems only the HS5055 has been put up successfully on the Master CP. We need members to report successful installations as they come along.

Hitec HS-55
Hitec 5055

Henge 922MG

Futaba s3114 - 100% direct drop in replacement. Even the servo gears appear to be the same.
Futaba s3154
Futaba s3157

eMax ES08MD

Esky Servos

Hobby King

http://www.hobbyking.com/hobbyking/s...11s_1_5kg.html
http://www.hobbyking.com/hobbyking/s...dProduct=10965
http://www.hobbyking.com/hobbyking/s...dProduct=23485
http://www.hobbyking.com/hobbyking/s...g_0_17sec.html

Aliexpress

http://www.aliexpress.com/item/Regis...647448647.html
http://www.aliexpress.com/item/Tigei...504989882.html

Thanks guys for the information.
The Hitec hs5055 metal geared servos sound good.

Tom

I was going to get a Master 200 C/P until the servo issue. Futaba 3114's are $15.00/ Hi-Tech 5055's are $18.00 each. This was made for flyer moving on up to 6ch and this sounds like a deal breaker with faulty sevos. Hope Walkrea improves servos.

note: the servos DO have to be reversed with the MasterCP but it's an easy affair with the 20.00 hitec programmer. Also, the other great thing about the programmer is you can set your travel and centering exactly like you want. I have a perfect 90 on every servo. Well worth the upgrade.....Tom, if you haven't seen the thread. I have already converted the MasterCP to brushless. I still have yet to get to a nice field to open it up though.....hoping to do so this weekend.

Originally Posted by dankar04

I was going to get a Master 200 C/P until the servo issue. Futaba 3114's are $15.00/ Hi-Tech 5055's are $18.00 each. This was made for flyer moving on up to 6ch and this sounds like a deal breaker with faulty sevos. Hope Walkrea improves servos.

you can get the hitec's from tower hobbies for 50.00 for all three. also, the main reason I picked this model up is because I get tired of fixing. Look at how easy this thing is to repair. The servos are pretty much the only weak link. The tail motor is stupidly easy to replace and the brushed main should last awhile longer it did than when it was in the v400's because it's spinning a lot less mass.