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RC-Monster Carbon Fiber
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Posts: 100
Join Date: May 2007
Location: Poland
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05.13.2008, 03:56 AM
My other concern are motor temperatures. I think longer can and lower kv will run much cooler.
> HB L2PE + MMM + Medusa 60-1600 @ 6S A123
> HB LSP + MMM + Medusa 70-1600 @ 6S2P A123
> AE B44 + MM + Medusa 50-3300 @ 4S A123
> AE J82 + SW 5700 @ 2S LiPo
> AE TC5R + MM 6900 @ 2S LiPo
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Guest
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05.13.2008, 04:32 AM
I'm not seeing this with my setups the Medusa has always been under 130f at the end of a run, it was 117f at the end of the logged run from yesterday. The Neu was at 127f at the end of the run yesterday. The Medusa does have a heat sink and the Neu does not, dont know for sure how much differance that makes but I want to make sure I give as much accurate info as possible.
I drove the Neu on asphalt today and the torque differance was much more noticable! The Neu has a lot more low to midrange torque, fun but a bit harder to keep the rubber side down;) Like I said I dont know if that much torque would be a good thing or not in a race. I guess it depends more on your skill level, and judging from your list of toys I would guess you might like the added power of the 60mm motors.
In the end you need to buy what you are comfortable with. Just thought my experimentation might be helpful to you since you were looking to go light and not looking for crazy fast speeds or super long runtimes.
I just fired off an Email to Medusa to see if there is an ETA on more 36-60-2000v2's. I really want one!
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RC-Monster Carbon Fiber
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Posts: 87
Join Date: Mar 2008
Location: Rethymno, Greece
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05.13.2008, 04:42 AM
imo, this isn`t a fair comparison...
the 1512 is 60mm long, and thus it`s absolutely natural to have more torque than the 50mm medusa one [since the design is similar]...
a fair comparison would be between the 1512/2.5d [2050kv,60mm long] and the medusa 36-60-2000v2...
i know that many members [including buzzsaw] already know that, but i am just merely trying to make a point for those who haven`t realized that the particular/present comparison refers to motors of different length/size [not just different 'brand'].
just my 0.02...
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RC-Monster Carbon Fiber
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Posts: 100
Join Date: May 2007
Location: Poland
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05.13.2008, 06:33 AM
My friend will convert his HB Lightning 10 truggy using Medusa 50 mm. I think I will try his motor and than decide if I need 60mm can.
> HB L2PE + MMM + Medusa 60-1600 @ 6S A123
> HB LSP + MMM + Medusa 70-1600 @ 6S2P A123
> AE B44 + MM + Medusa 50-3300 @ 4S A123
> AE J82 + SW 5700 @ 2S LiPo
> AE TC5R + MM 6900 @ 2S LiPo
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RC-Monster Carbon Fiber
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Posts: 252
Join Date: Aug 2006
Location: Estonia, Tallinn
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05.13.2008, 07:02 AM
Yeah, let us know how it works
I want to know how 50mm performs on 1/8 buggy. Because soon I will start new conversion project on AE RC8
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RC-Monster Carbon Fiber
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Posts: 305
Join Date: Sep 2007
Location: San Diego, CA
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05.13.2008, 10:52 AM
The 50mm 2200kv works great in a buggy on 4s. That's what I'm running in my 8ight and I'm really happy wth it. It has plenty of torque and top speed.
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RC-Monster Stock
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Posts: 33
Join Date: Apr 2008
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05.13.2008, 12:25 PM
Quote:
Originally Posted by jfruge
Anyone order a bonded heatsink version? I still have yet to get an update from them on my order.
I will send them an email today.
Thanks,
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I just got word.... Its now on the way!
"Mr. Fruge,
It has actually been shipped out this morning.
Thank You,
Chris Bernier
Shipping Dept.
Medusa Research, Inc.
"
John Fruge
Madera, CA
8ight pro buggy, RCPD Ultimate, 4s TP 5000, MM ESC , NEU 1512/3d, JR Z8800T
8ight pro buggy, RCPD Ultimate, 4s TP 5000, MM ESC , Medusa V2 36x50mm, JR Z8800T
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RC-Monster Stock
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Posts: 33
Join Date: Apr 2008
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05.13.2008, 12:28 PM
Quote:
Originally Posted by Matthew_Armeni
The 50mm 2200kv works great in a buggy on 4s. That's what I'm running in my 8ight and I'm really happy wth it. It has plenty of torque and top speed.
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Matthew, that is what I ordered for my sons 8ight conversion. What gearing are you using on your 4S setup? How is the runtime so far?
Thanks,
John Fruge
Madera, CA
8ight pro buggy, RCPD Ultimate, 4s TP 5000, MM ESC , NEU 1512/3d, JR Z8800T
8ight pro buggy, RCPD Ultimate, 4s TP 5000, MM ESC , Medusa V2 36x50mm, JR Z8800T
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RC-Monster Carbon Fiber
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Posts: 305
Join Date: Sep 2007
Location: San Diego, CA
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05.13.2008, 01:03 PM
Quote:
Originally Posted by jfruge
Matthew, that is what I ordered for my sons 8ight conversion. What gearing are you using on your 4S setup? How is the runtime so far?
Thanks,
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I'm running a 13t clutchbell and getting awesome runtime. I ran 2 5min qualifiers and 8 min of a 20min main (had the dogbone end of the center drive shaft eject after I cased the top of a jump). I don't quite remember the mah I was putting back into the pack after each qualifier (a Hyperion 16c 5350mah) but it was about the same if not a little less then tekno was putting into his and he was running a 1509 2Y and a MaxAmps 20c 6000mah with the same gearing. He finished the 20 min main with some to spare so I could have done at least 15min on the Hyperion, maybe 20, but I wasn't running that pack in the main, I don't like to run my pack until they dump, I was using a MaxAmps 20c 6000mah. We were both running MM with a fan, Castle BEC. This is racing so bashing should yield longer runtimes.
I'm also like their 1300kv 60mm in my 8T geared with a 14T bell. Running a Hyperion 18c 6s 4250 through an un-modded MM, Castle BEC, no fan. Haven't track tested this yet, but it should be a good setup.
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Guest
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05.13.2008, 03:10 PM
Quote:
Originally Posted by kostaktinos_mt
imo, this isn`t a fair comparison...
the 1512 is 60mm long, and thus it`s absolutely natural to have more torque than the 50mm medusa one [since the design is similar]...
a fair comparison would be between the 1512/2.5d [2050kv,60mm long] and the medusa 36-60-2000v2...
i know that many members [including buzzsaw] already know that, but i am just merely trying to make a point for those who haven`t realized that the particular/present comparison refers to motors of different length/size [not just different 'brand'].
just my 0.02...
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Ya I hope no one was confused that these two motors were the same size.
Is it a fair comparison, absolutly not, the Medusa was a huge underdog. It is a valid comparison though, since both motors were used in the same vehicle with approprite gearing to attain nearly identicle speeds.
What it was intended to show is that the 36-50 is a capable motor. Keeping up with a 10mm longer, $140 more expensive motor and not getting scorching hot is a testament to this.
What I wasn't expecting was the Neu to produce so much torque on the tall gears I had to run (24t pinion) I was honestly expecting the Neu to be more sluggish due to the gearing.
I'm a relative newb when it comes to surface vehicle power systems, but have been running nothing but brushless motors in planes and helis for around 5-7yrs.
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RC-Monster Stock
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Posts: 33
Join Date: Apr 2008
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05.13.2008, 03:28 PM
[QUOTE=Buzzsaw46;172399]Ya I hope no one was confused that these two motors were the same size.
Is it a fair comparison, absolutly not, the Medusa was a huge underdog. It is a valid comparison though, since both motors were used in the same vehicle with approprite gearing to attain nearly identicle speeds.
What it was intended to show is that the 36-50 is a capable motor. Keeping up with a 10mm longer, $140 more expensive motor and not getting scorching hot is a testament to this.
What I wasn't expecting was the Neu to produce so much torque on the tall gears I had to run (24t pinion) I was honestly expecting the Neu to be more sluggish due to the gearing.
I'm a relative newb when it comes to surface vehicle power systems, but have been running nothing but brushless motors in planes and helis for around 5-7yrs.[/QUOTE]
Same here... planes, helis, FE boats, and now 1/8th scale conversions..
John Fruge
Madera, CA
8ight pro buggy, RCPD Ultimate, 4s TP 5000, MM ESC , NEU 1512/3d, JR Z8800T
8ight pro buggy, RCPD Ultimate, 4s TP 5000, MM ESC , Medusa V2 36x50mm, JR Z8800T
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RC-Monster Carbon Fiber
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Posts: 87
Join Date: Mar 2008
Location: Rethymno, Greece
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05.13.2008, 03:37 PM
agreed...!
just a side-note... in SOME cases, shorter gearing [larger pinion/smaller spur] can produce more torque... that will depend on the motor torque constant [torque/current] AND [especially that] batteries... i know it sounds stupid, but it does happen [under conditions]...
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Guest
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05.13.2008, 10:58 PM
Current draw (provided the battery can discharge enough)!
Oh, and in other news, my Medusa 4800kv 50mm motor is holding up superbly to 27/87 gearing in my Rustler. Motor doesn't dare go over about 135F in the middle of the day (last week it was around 95 according to my truck's temperature sensor I think? And MAN, it felt like it big time- heat index was above 100 easy).
Last edited by Five-oh-joe; 05.13.2008 at 11:48 PM.
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Guest
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05.14.2008, 08:07 AM
Quote:
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Oh, and in other news, my Medusa 4800kv 50mm motor is holding up superbly to 27/87 gearing in my Rustler. Motor doesn't dare go over about 135F in the middle of the day (last week it was around 95 according to my truck's temperature sensor I think? And MAN, it felt like it big time- heat index was above 100 easy).
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Thanks for that update.I've been comparing what your saying to my experience with the Novak 4.5 that I run in my Stampede.Since they are both 4800kv motor I find the comparison quite interesting.I can run lower voltage(2s) and never break 110* with 24/84 gearing and mashers.I usually run 3s though.With 3s lipo and 31/76 gearing the motor gets to about125*.Thats with temps in the 70,s though.So now my interest has been peaked about running my 4.5 in my maxx on 3s.Or go ahead and get a 50-3300.Boy what a hard decision.
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Guest
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05.14.2008, 02:21 PM
HV 4.5 you mean you're running? I tried an HV4400 in my Rustler (before the sintered rotor and stuff). That thing HAULED on 12 cells.....  Ran a little hot at around 150F for what it was though. I think I ran 23/86 with that motor on 12 cells. Tons of power, but very very smooth. I still have the setup too, but the ESC is fried (engineering side of me got inside the case............hehe).
I just ran 21/87 with Mashers now, and the motor is handling it fine. Around 110F off a run doing some off road and on road action. Good stuff....
Last edited by Five-oh-joe; 05.14.2008 at 09:23 PM.
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