HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Jul 08, 2012, 01:28 AM
Crash and learn
United States, PA
Joined Dec 2011
1,605 Posts
370 Super Motor

Really no idea if this will fit. "370" refers to the motor diameter (I think)

ESKY Honey bee cp3 HB FB CP 3 370 Super Motor 002393 CT
http://www.ebay.com/itm/ESKY-Honey-b...item20b2ab9dac

Esky 370 Main Motor Heat Sink
http://www.ebay.com/itm/EK1-0224-000...item1e6d24aaa7

F45 Thread - 370 Super Motor
http://www.rcgroups.com/forums/showp...&postcount=320

Esky 370 Super Motor w/ 8T (11.1V - 42000 RPM) - Honey Bee CP3/CT/CPX 002393

Brushed motor, but for 11.1v (not 7.4v) Pinion 8 teeth, 9104 stock has ??? teeth
http://www.ebay.com/itm/Esky-370-Sup...-/270994472479

1x 370 Supper brushed DC main motor W/ Pinion 9T for RC ESKY Walkera helicopter
Compatible with the following model(s):
Esky Honey Bee CP3
Esky Honey Bee CPX
Esky Honey Bee CT
Walkera or other brand 250-400 size (class) Brushed power system helicopter

Esky Honeybee V2 Quest For More Power Cp3 Motor Fitted (Video)
"I put a cp3 motor into my honeybee v2, it gives it approx 25% more power, which isnt heaps, but it all helps. beats having to go brushless, or messing around with that nasty xtreme 380x motor. feel free to ask any questions about it."
http://kelulut.com/honey-bee-cp-vide...ta_player.html

Information posted. Don't know if this will work in DH9104.
---

"It isn't exactly true about the Li-ion batteries"
What isn't exactly true?
---

DH9104 stock battery is 1300mah Li-Ion.
What size is your battery?

Still using a trimmed tail rotor?
.
370 SuperMotor - Brushes can be replaced? 11.1v (not 7.2v)
Esky 370 Super Motor w/ 8T (11.1V - 42000 RPM) - Honey Bee CP3/CT/CPX 002393
http://www.eskyhelicopter.com/media/...3/2393-big.jpg
Ribble is offline Find More Posts by Ribble
Last edited by Ribble; Jul 09, 2012 at 10:18 AM.
Reply With Quote
Sign up now
to remove ads between posts
Old Jul 08, 2012, 01:15 PM
Brakes? Who Needs Brakes?
United States, WV
Joined Jun 2012
36 Posts
Quote:
Originally Posted by Ribble View Post
Really no idea if this will fit. "370" refers to the motor diameter (I think)

ESKY Honey bee cp3 HB FB CP 3 370 Super Motor 002393 CT
http://www.ebay.com/itm/ESKY-Honey-b...item20b2ab9dac

Esky 370 Main Motor Heat Sink
http://www.ebay.com/itm/EK1-0224-000...item1e6d24aaa7

F45 Thread - 370 Super Motor
http://www.rcgroups.com/forums/showp...&postcount=320
---

"It isn't exactly true about the Li-ion batteries"
What isn't exactly true?
---

DH9104 stock battery is 1300mah Li-Ion.
What size is your battery?

Still using a trimmed tail rotor?

Thanks for the info.

I found these and they look like they will fit fine...

MJX F645 F-45 F45-014 Main Motor

MJX F645 F-45 F45 Tail Motor

About what may not be so true about Li-ion...
I read that the Li-ion's that come with the 9104 are only lasting about a dozen
charges and then they won't charge any longer...
Mine are lasting their full life so far and are still kicking like new.
One is the 7.4v "stock" 1300mah and the other is a 7.4v 1500mah.
jspcrepair is offline Find More Posts by jspcrepair
Reply With Quote
Old Jul 08, 2012, 01:39 PM
Crash and learn
United States, PA
Joined Dec 2011
1,605 Posts
Quote:
Originally Posted by jspcrepair View Post
..
I read that the Li-ion's that come with the 9104 are only lasting about a dozen
charges and then they won't charge any longer.
My experience is that Li-Ion, LiPo, NiMh, batteries last forever if you treat them right. Abuse them and they die. Common mistakes are over-discharge or charging at too high a charge rate (quick charge), and repeatedly doing it.

Though flying my little V911's in this heat does make a lot of the LiPo batteries look bad. So I mark them and if they look bad the next time, I mark them again. Most show no difference in this heat but it must be hard on them with my over-heated motors.
Ribble is offline Find More Posts by Ribble
Last edited by Ribble; Jul 08, 2012 at 01:45 PM.
Reply With Quote
Old Jul 08, 2012, 01:59 PM
Brakes? Who Needs Brakes?
United States, WV
Joined Jun 2012
36 Posts
I like the looks of the motor that you suggested.
Looks like it may last longer just by the design and with the Heatsink, that
should help well.

I am looking into both a motor and a tail motor that will outlast the stock one.

I think this is ridiculous of the mfg... to make something that sells for $50 to
$100 and end up having to replace parts when it is still new.


Quote:
DH9104 stock battery is 1300mah Li-Ion.
What size is your battery?

Still using a trimmed tail rotor?
The stock battery is a 7.4v 1300mah Li-ion and my second one is a 1500mah
Li-ion.

Still using the trimmed tail rotor blade, yes... and it is working great for reduced
left drag on takeoff and it permits tighter hovering (less navigation to make it stay
put while hovering).
jspcrepair is offline Find More Posts by jspcrepair
Last edited by jspcrepair; Jul 08, 2012 at 02:27 PM.
Reply With Quote
Old Jul 08, 2012, 02:10 PM
Crash and learn
United States, PA
Joined Dec 2011
1,605 Posts
Quote:
Originally Posted by jspcrepair View Post
I
I think this is ridiculous of the mfg... to make something that sells for $50 to
$100 and end up having to replace parts when it is still new.
Then there is my DH9104 which has at least 100 flights and needing only a canopy and landing gear.

If you are still using the trimmed tail blade and you kill another tail motor, then possibly that may be the reason.

1500mah heavy battery in 100F heat will kill the main motor. If you put in a better motor, then you burn up the switching transistor on the circuit board.

Oil the motors and they run better for a few flights. My opinion is when you oil a motor, you are signing it's death warrant. If the motor is already dead, then oil may bring it back.
Ribble is offline Find More Posts by Ribble
Last edited by Ribble; Jul 08, 2012 at 02:24 PM.
Reply With Quote
Old Jul 08, 2012, 02:31 PM
Brakes? Who Needs Brakes?
United States, WV
Joined Jun 2012
36 Posts
Quote:
Originally Posted by Ribble View Post
Then there is my DH9104 which has at least 100 flights and needing only a canopy and landing gear.

If you are still using the trimmed tail blade and you kill another tail motor, then possibly that may be the reason.

1500mah heavy battery in 100F heat will kill the main motor. If you put in a better motor, then you burn up the switching transistor on the circuit board.

Oil the motors and they run better for a few flights. My opinion is when you oil a motor, you are signing it's death warrant. If the motor is already dead, then oil may bring it back.
The first tail motor died without the trimmed tail blade and the second tail motor (the new one) is still fine.

I am just going to attempt new motors that are built better to see if that helps.

I have read so many pros and cons from so many people about the DH9104...
some have great experiences and others get lemons... Mine is somwhere in
between
jspcrepair is offline Find More Posts by jspcrepair
Reply With Quote
Old Jul 08, 2012, 05:44 PM
Crash and learn
United States, PA
Joined Dec 2011
1,605 Posts
Esky 370 Super Motor w/ 8T (11.1V - 42000 RPM) - Honey Bee CP3/CT/CPX 002393
Moved to post #976. Do not know if this motor will work in DH9104.
Ribble is offline Find More Posts by Ribble
Last edited by Ribble; Jul 09, 2012 at 10:21 AM.
Reply With Quote
Old Jul 09, 2012, 05:00 AM
Micro Heli mods
Tumppi T's Avatar
Finland, Tuusula
Joined Mar 2012
181 Posts
Quote:
Originally Posted by jspcrepair View Post

Someone mentioned the MJX F45-014 Main Motor -- can you please tell me if
this worked for you in yours?
Also, what Tail motor would be best...

Thanks
Hi,

It was me who mentioned the MJX F45 main motor. I have one and it works fine. Though now im flying with brushless motor

My tail motor is still original version. It doesn't have enough power to work with the BL main motor. Yesterday I ordered Xtreme direct drive tail packet. Hopefully it will work better....if not.....then i will modificate also the tail motor as brushless version

- Tumppi

Here is the link to DD tailmotor:
http://www.ebay.com/itm/Xtreme-EHB01...item5ae79fcef6
Tumppi T is offline Find More Posts by Tumppi T
RCG Plus Member
Latest blog entry: VCTRC 450 Pro V2 (T-Rex clone)
Reply With Quote
Old Jul 12, 2012, 01:09 AM
Micro Heli mods
Tumppi T's Avatar
Finland, Tuusula
Joined Mar 2012
181 Posts
Quote:
Originally Posted by Ken59 View Post
I like it! Mine has been cut to shreds doing the work I did using 3 servos and this looks good, simple and works! Well, I won't say cut to shreds, as the 3rd servo was actually quite easy. It probably responds just as quick as mine does, also. I still wish I can find a better swashplate to fit the shaft. No luck though! I have extras, still, and can restrict movement via programming if needed. I have not flown in a while due to work and other commitments. Again, GREAT WORK!
Thanks Ken,

About a better swashplate... I ordered E-Flite Blade SR metal swashplate. The diameter of the mainshaft should be same as in DH (4mm)....hopefully it fits.

I'll tell you how does it fit as soon as it comes from US.

- Tumppi

http://cgi.ebay.com/ws/eBayISAPI.dll...AMOTORS%3A1123
Tumppi T is offline Find More Posts by Tumppi T
RCG Plus Member
Latest blog entry: VCTRC 450 Pro V2 (T-Rex clone)
Reply With Quote
Old Jul 14, 2012, 12:15 PM
Brakes? Who Needs Brakes?
United States, WV
Joined Jun 2012
36 Posts
Quote:
Originally Posted by Ribble View Post
Esky 370 Super Motor w/ 8T (11.1V - 42000 RPM) - Honey Bee CP3/CT/CPX 002393
Moved to post #976. Do not know if this motor will work in DH9104.
Yeah, I found out that the ESKY Super Motor is 11.1v.
I do not believe that will work unless the motor can accept output "Up To" 11.1v.
If that is the case, then a 7.4v battery would work but the motor would only be
working on a lower voltage which could cause one of two things:

1) Longer motor life due to not using full power potential, or
2) Harder work for the motor to create enough lift torque @ 7.4v instead of 11.1v.

I think I will go with the MJX F45 as my new motor and the matching tail motor
(MJX F645 F-45 F45 Tail Motor) should also work.

Since they are cheap enough.

Additional Info:

As a test, I just pulled the main motor and connected it to the PCB and unhooked
the tail motor connection.
I turned on the RC and powered/throttled it up.

The motor does power up and down properly but has very little torque - I tested this
by holding the pinion gear between my first finger and thumb, giving a little holding
pressure.
The motor would try to turn the pinion but would not budge it unless I released it.
My guess is the main motor is definitely weak as it should be able to spin the pinion
if being held slightly by hand.

I think I may eventually upgrade to brushless or just get a better model altogether.
jspcrepair is offline Find More Posts by jspcrepair
Last edited by jspcrepair; Jul 15, 2012 at 02:13 PM. Reason: Additional information
Reply With Quote
Old Jul 15, 2012, 04:16 PM
Brakes? Who Needs Brakes?
United States, WV
Joined Jun 2012
36 Posts
OK! Can Someone Help Convert My Heli?

I am clueless.... This is very confusing with all the parts and all out there and
I am quite new to the modding arena, this being my first large scale RC Heli..

I have been looking around here and elsewhere online for days and am only
getting more and more confused.

Can someone give me an idea of what I need for a "Motor's Only" conversion?

I want to keep the DH9104 original except for main and tail motors.
I am not looking to add Servos or upgrade channels...

All I would like is to convert the motors only to brushless.

What would I need - or what would work --- (equal to or better in power
and such) Motors for both Main and Tail and what ESC would I need (20a,
30a, etc.)?

Do I (or do I not) need a "Signal Converter"?
Do I (or do I not) need a "Voltage Regulator"?

I would like to stay with the 7.4v so I don't need to change anything on the
PCB.

I just don't want to be continually sinking money into this thing when it should
last longer than it has already.

I am soooo confused... LOL

Thanks.
jspcrepair is offline Find More Posts by jspcrepair
Reply With Quote
Old Jul 15, 2012, 04:59 PM
Crash and learn
United States, PA
Joined Dec 2011
1,605 Posts
To convert to brushless motors on the DH9104, skipping the "why", you would need the following:

New transmitter 3ch to 6ch
New receiver
Electronic Gyro
ESC for main motor
ESC for tail motor
BEC to convert 7.4v battery to 5v for receiver
Brushless main motor
Brushless tail motor
Ribble is offline Find More Posts by Ribble
Last edited by Ribble; Jul 15, 2012 at 06:25 PM.
Reply With Quote
Old Jul 16, 2012, 07:06 AM
Micro Heli mods
Tumppi T's Avatar
Finland, Tuusula
Joined Mar 2012
181 Posts
Quote:
Originally Posted by jspcrepair View Post
I am clueless.... This is very confusing with all the parts and all out there and
I am quite new to the modding arena, this being my first large scale RC Heli..

I have been looking around here and elsewhere online for days and am only
getting more and more confused.

Can someone give me an idea of what I need for a "Motor's Only" conversion?

I want to keep the DH9104 original except for main and tail motors.
I am not looking to add Servos or upgrade channels...

All I would like is to convert the motors only to brushless.

What would I need - or what would work --- (equal to or better in power
and such) Motors for both Main and Tail and what ESC would I need (20a,
30a, etc.)?

Do I (or do I not) need a "Signal Converter"?
Do I (or do I not) need a "Voltage Regulator"?

I would like to stay with the 7.4v so I don't need to change anything on the
PCB.

I just don't want to be continually sinking money into this thing when it should
last longer than it has already.

I am soooo confused... LOL

Thanks.
Here is one option for BL main motor:

- brushed to brushless converter: http://www.ebay.co.uk/itm/Xtreme-Bru...item19d292edb6
- 18A ESC http://www.hobbyking.com/hobbyking/s...idProduct=2168
- Brushless motor: http://www.hobbyking.com/hobbyking/s...dProduct=11881
- 10T Pinion gear: http://www.hobbyking.com/hobbyking/s...dProduct=11198



Tumppi
Tumppi T is offline Find More Posts by Tumppi T
RCG Plus Member
Latest blog entry: VCTRC 450 Pro V2 (T-Rex clone)
Reply With Quote
Old Jul 17, 2012, 10:26 AM
Brakes? Who Needs Brakes?
United States, WV
Joined Jun 2012
36 Posts
Thanks for all the info but I am not about to put that much money in something
that originally cost less than $60.

I spoke to a local Hobby Dealer that I just found out was close to where I live.
He deals in the High End Helis (E-Flight Blade - all models), planes, boats,
cars, and trucks/ATVs.

I was also told by him that since the ESC is built in on the DH9104, I would have
to change out the Rx and that means a new Tx as well... I cannot afford that.

I bought an E-Flight Main Motor Heat Sink from him so when I get a new motor,
I can at least try to make it last longer by using that on it.

He did show me a #380 Motor and said he was not sure it would work in the DH9104
unless the original #370 motor specs were the same as the #380...

Sooooo..... can anyone tell me what are the Specs for the DH9104 Main Motor?

I need the information for Peak Amps, Turns, and RPM so I can match that with the
motor he showed me. He said that the Amps and turns need to match or else the
motor could burn out the ESC and that would result in having to buy a new PCB.
The motor is a little longer but that won't be a problem because of the clearance
under the heli.

For now, I think I am going to get an original motor and an MJX motor to test which
one will work best (as long as the MJX specs are the same as the original).

I am going to get an MJX F45 soon because it is the same size but a 4ch and seems
to be built much better... and I found 2 places where I can get one (red or green) for
under $100 (one for under $90).

I am "Poor Folk" and cannot afford much.

If I could afford it, I would just get one of the High-end 5ch or 6ch models that cost like
$300 and be done with it... but right now, that is only a wish.

Thanks again guys.
jspcrepair is offline Find More Posts by jspcrepair
Last edited by jspcrepair; Jul 18, 2012 at 08:45 PM. Reason: New Information from Local RC Hobby Dealer
Reply With Quote
Old Jul 25, 2012, 02:34 AM
Micro Heli mods
Tumppi T's Avatar
Finland, Tuusula
Joined Mar 2012
181 Posts
Swashplate upgrade

I upgraded my DH:s swashplate to E-Flite Blade SR metal version.

Also changed the servo rods and made new swashplate antirotation pin from paperclip



Tumppi T is offline Find More Posts by Tumppi T
RCG Plus Member
Latest blog entry: VCTRC 450 Pro V2 (T-Rex clone)
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Double Horse 9100 Series 3-channel Helis killbucket Mini Helis 1500 May 13, 2013 01:41 PM
Discussion New Double Horse 9100 3 Channel Co-Axial Helicopter w/ Built in Gyro chanerz Coaxial Helicopters 86 Apr 13, 2012 07:12 AM
New Product New Double Horse 9101 3 Channel Co-Axial Helicopter w/ Built in Gyro thercguy Coaxial Helicopters 40 Jan 11, 2012 05:24 PM
Sold 9089 Double Horse Shuttle Electric Heli w/Video DVR Senor Jack Aircraft - Electric - Helis (FS/W) 0 Apr 10, 2011 08:15 PM
Mini-Review Double Horse 9100 3-channel copter -Image Heavy! killbucket Electric Heli Talk 0 Jan 30, 2011 05:50 PM