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Old Nov 02, 2014, 07:12 AM
Still Flying
OldRCNut's Avatar
United States, WI, Fond du Lac
Joined Mar 2013
157 Posts
Motor

Quote:
Originally Posted by pjdog350 View Post
I see so much on the forum about these MMW -15 and the -17 motors. I've been putting off getting some? Sooner or later a brushed motor replacement is coming for sure as I fly almost every day. Plus I have a pretty good pile of UMX warbirds. I still have a small stock of MSRX motors in the spares box. But the reduced flying time to me is not worth the upgrade. Plus it's still a brushed motor! them I have to upgrade all my batteries to at least 250 MHA's.

I just can't see it. I'd rather have more flight time at a slower speed.

Well - I guess I just showed that I'm getting old!!! 20 to 25 years ago I would have got a motor to big of the plane, Put a tuned pipe on it and upgraded the nitro content for more speed.

Yep! Age is getting the best of me.

jack
PJ,

I don't disagree with your your point. I am struggling with the same things. My MSRX motor in my P51 is getting old and I may just put another MSRX motor in it. The MSRX type motor and Eflite 150 mAh 45C cells makes a great upgrade for the little warbirds. The motor is a little heavier than stock so it also puts some weight up front where these birds tend to need it.

I ordered the MMW -15 motor as an experiment since I was reading about them. I then ordered the Miniaviation batts to go with it. It is a powerfull combination but at a cost, short flights. The combination seems to be the ultamite for brushed power for the little warbirds at this time.
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Old Nov 03, 2014, 03:59 PM
Fox Four,..Guns, Guns, Guns!
jwoocrew's Avatar
United States, CA, El Dorado Hills
Joined Jun 2011
92 Posts
Quote:
Originally Posted by OldRCNut View Post
PJ,

I don't disagree with your your point. I am struggling with the same things. My MSRX motor in my P51 is getting old and I may just put another MSRX motor in it. The MSRX type motor and Eflite 150 mAh 45C cells makes a great upgrade for the little warbirds. The motor is a little heavier than stock so it also puts some weight up front where these birds tend to need it.

I ordered the MMW -15 motor as an experiment since I was reading about them. I then ordered the Miniaviation batts to go with it. It is a powerfull combination but at a cost, short flights. The combination seems to be the ultamite for brushed power for the little warbirds at this time.
I have stated this before in other UM threads. On my first plane the T-28, I had gone through replacing the stock motor with a direct replacement because they were readily available at my LHS. The first time maybe after 25 flights and then what seemed to be 15-20 on the second motor. I enjoyed flying this thing so much but I soon realized I was going to go broke in order to keep my T-28 flying. If it wasn't for the information I found in RCGROUPS, I would have abandoned my purchase of other UM's to add to my collection. I have invested in a more reliable motor with a bit more power but still utilizes the 1S 160mah batts and 4-5 minute flight times. Knock on wood, the more reliable motors have lasted 2 years now on my T-28 and I have lost count. As the stock motors burn out on my new planes, I have replacements standing by to go in them. My P-40 was my last purchase and that motor died with less than 15 flights.
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Old Nov 12, 2014, 09:36 PM
Cap'n
Dinghy's Avatar
United States, OR, Springfield
Joined Dec 2013
198 Posts
Quote:
Originally Posted by jwoocrew View Post
I have stated this before in other UM threads. On my first plane the T-28, I had gone through replacing the stock motor with a direct replacement because they were readily available at my LHS.............
............
..... I have invested in a more reliable motor with a bit more power but still utilizes the 1S 160mah batts and 4-5 minute flight times. Knock on wood, the more reliable motors have lasted 2 years now on my T-28 and I have lost count. As the stock motors burn out on my new planes, I have replacements standing by to go in them. My P-40 was my last purchase and that motor died with less than 15 flights.
What is this more reliable motor ?
Many suggest other motors, most end up to be trade offs, power-flight time-longitivity....
Would love to know what has works so well for you.

Love the UM's and UMX's....just hitting dead ends with replacment motors.
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Old Nov 13, 2014, 10:56 AM
Fox Four,..Guns, Guns, Guns!
jwoocrew's Avatar
United States, CA, El Dorado Hills
Joined Jun 2011
92 Posts
Quote:
Originally Posted by Dinghy View Post
What is this more reliable motor ?
Many suggest other motors, most end up to be trade offs, power-flight time-longitivity....
Would love to know what has works so well for you.

Love the UM's and UMX's....just hitting dead ends with replacment motors.
PM sent
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Old Nov 15, 2014, 09:04 AM
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Joe Perrone's Avatar
doha Qatar
Joined Jan 2004
396 Posts
Inquiring minds still want to know which is the more reliable motor...
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Old Nov 15, 2014, 06:13 PM
Fox 1
RocketRobin's Avatar
Canada, AB, Calgary
Joined Jan 2013
552 Posts
Quote:
Originally Posted by Joe Perrone View Post
Inquiring minds still want to know which is the more reliable motor...
According to sources close to the National Inquierer, motors with the least amount of prop strikes last the longest.
Inquierer specialists suggest this is due to micro-fusion of the brushes to the armature when the motor is stopped and power is on.
Biologists close to the Inquierer insist the problem has deeper roots. According to Inquierer specialist Dr. Epstien: "anyvon zat grass lands dis vit power on had intellectual agility of ze shmall eggplant. Not ze large eggplant, but ze shmall von".

Cheers!
Rocket
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Last edited by RocketRobin; Nov 15, 2014 at 06:55 PM. Reason: grammar
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Old Nov 15, 2014, 06:16 PM
LiPo-Sucker & Airframe EMT
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Charlottesville, Virginia, USA
Joined Aug 2010
3,763 Posts
Zank you, I'm sure!
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Old Nov 16, 2014, 09:29 AM
Registered User
pjdog350's Avatar
Joined Apr 2013
722 Posts
Makes sense to be. Thanks rocket?

Damn eggplants
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