this motor is awesome!
ill chuck in my info...

i have been running my xxl savage ONLY on 6s with my centre diff running 14/47 geared for 53mph...
My ESC -122
Motor - 140

Not bad for a 16-17lbs TRUCK!!!!! there is definitely wiggle room... I usually just keep my trigger finger pinned when running
On this run, motor temp didnt go above 130 and esc was around 105 from what i remember
http://www.youtube.com/watch?v=Hew53NyAObo

Sweet!!


I got the truck out today... did some hard runs through grass and on asphalt for a bout 12 minutes before the wheel came off during braking... gosh, the power just goes on and on...

here are the numbers:
Asphalt - 114° F
Motor - 133° F
ESC - 119° F

Alien

I was able to run my Gmaxx a couple of days ago. Geared 44/21 on 6S with the 1520 motor was insane. It propelled the truck so effortlessly. The batteries and motor barely got warm.

Hey George, could you post your truck photos and vids here? love the work you've done on it man...

Im running the 1520 in a muggy that is pushing 14 pounds fully loaded.
center diff:14/48
diffs: xxl diffs
batts: 6s 30/40c
tires: super bolt on tires on losi 420's
esc: mmm v3

Temps are very cool almost ambient. Fan never has come on the esc while running, even in grass with tons of long full throttle pulls, jumps, etc. I cant wait to try out some nano tech batts with an insane C rating to see what this bad boy can do. Its fast now, no doubt, but not at all fast enough ;) But in my own defense, I have the punch control turned down a little and I haven't messed with timing at all...

I love this freakin motor. I took my RC8T out again yesterday on 6S through grass and dirt. Temps maybe 10-15C above ambient at the end of the first pack. Torque galore.

Few of my friends, after seeing how this motor runs in my car, want one for their truggies. Problem is that they aren't any longer available. Please bring them back Castle (I want a few spares too).

I have two 1520 new as spares, waiting in their boxes, but I don't need them, my first 1520 still works like a charm in my mbx5T truggy since one year of intense racing and bashing on 6S :yipi:.
I Still have the same bearings, love the durability of thoses NMB oversized bearing :yipi:

i am really going to put this 1520 to the test.
I have a brand new 1520 sitting here.. it is going to go in my 18lbs savage! Im going to run it on 9s! so near its max RPM Limit... and then we will see what this baby can really do :)

It will be pushing heavy baja rims too... So this will be a good test! Im going to gear for 70mph on 9s using an ice hv! Ill keep you posted!

Now this I like! Can't wait to see the data logs and a video :-)

I'll also be interested to see if the 1520 is up to this task. I have my doubts, but I could be wrong. I'm planning on using the 1717 for my new build that will be of similar size to your savage. The 1717 is almost as big as the 1527, which can handle this size truck.

I have my doubts too brian...

But considering so far i have been running 6s through this motor in my savage geared for 56mph and achieving similar temps to most guys on here. I think the motor could handle a tiny bit more weight and some extra voltage :)

I was wanting to gear my 1520 to 60mph because my temps were so cool!!!!

So 70mph with 9s and a little more weight should easily be achievable... Im not actually aiming to hit 70mph, i just want to be able to run higher speeds and maintain cool temps which i believe should work quite nicely.

I may be proven wrong, but i dont see why it shouldnt work....
For example.. .i used to run my stock flux on 4s geared for 40mph, and then just drop 6s in there for more speed...

So if i gear 6s for around 47mph and 9s for 70mph, i do not see why it shouldnt work nicely?

Only time will tell :)

The limiting factor would be simply the power that a motor that size can handle. Neu rates its 1521 motors (basically the same size as the CC 1520) to 3500 surge watts. I've put 4000 watts through my 1527 in my 19lb buggy. Can the 1520 handle that much? I guess you'll find out!

Nice info there brian! Cheers!!!

Well if you put it like that... this should be interesting ;)

That's realy the beauty of data logging, you get to see exactly what kind of wattage the system is turning out, you have a reference of how things like timing changes and current limiting are affecting the system, and how your lipo's are handling the task...

Just with they had an accessory port for plugging in a temp gauge for the motor and batts.

All good stuff... can't wait to see the results of the experiment... should be interesting to see the data when the motor is allowed to unload to rpms upwards of 60,000...
please post some build photos too :yes:..


Alien

Of course i will be creating a new build for this one as my last build up is now a bit of a mess.

Hey guys, I did some runs today... 20t pinion, 52t spur and 5s... the ambient was in the high 90s i think... at the end of the run (about 15mins), i got temps of 160° f :whip:...
How hot can these motors get before i start worrying about a replacement?

Alien

i heard that 180 is as hot as you really want to go...

i used to peak at 160 and i usually stick to that. But i hear people hitting 200 without problems, but life of the motor is reduced...

ill be running 10/47 on the savage. That is geared for 48mph on 6s and 73mph on 9s. Should be interesting. i have a roll out of 1.45:1 which isnt too bad. it all depends on the final weight of my truck. I dont want to be more than 20lbs hopefully!

Hey Jah, that sounds good man... I'll be mounting a fan on it soon to have some air flowing around it a little better... Needless to say i feel a lot better with your reply...

Let us know how that setup works out for you...


Alien

also i would take into consideration how hot it is where you are... 90s is pretty hot and as hot as it get here in the UK haha so if i was to run on a day like that, i think i would see my temps increase quite a bit... I would prob be running in the 180s with my gearing. Im going to have to run and then let my truck cool down now and then... After i do my build, ill see what space i have for mounting a fan somewhere...

Hopefully someone can chime in an confirm what i say about temps is roughly accurate.

I don't think you're far off where ambient influences are concerned... I really thought the hot day would add a few degrees on the running temps...
I never saw a drop in power, so i guess it will handle the heat well...

Alien

200F is really pushing it when it comes to temps. i would say 190F is the absolute max without damaging them.

I definitely won't let it get there... I'm having way too much fun with this thing...

Hey guys,
I have my first "failure" with my 1520. The front bearing is locked, due to water (lot of races under rain and in track "lakes" this winter). It happens after a year of use, I estimate that this motor has eated ~ 500 6S batteries in my truggy (many many front arms replacement since the beginning :lol:), I did not count the exact number. I wouldn't have this problem if I always have driven under dry weather...
Lets buy a bearing a drive again... :lol:

Thats very impressive Nuz!!! over 500 cycles!!!

So a couple of new Boca bearings and you should be up and running all over again, and a new rotor from castle?

Could you do a rebuild vid? I am a little worried that when i do mine, i may do damage to the internal coils removing the central magnet

The rotor is not damaged at all, the bearing didn't explode, it just locked it self. At the end of the run, I noticed some difficulty to turn the motor by hand so i decided to open it and check this out. The rear bearing is still fine.
I just put some wd40 in the front one, it is now as free as new. I will grease it and go !

WOW!!! 500 packs?? now that's a used motor... :lol:

20-25 packs per week since 7-8 months. indeed, it's a used motor, but it still works really fine... Moreover the bearing has not a lot of play compared to a new bearing...

I've installed my 1520 in my Old school Lightning Stadium Pro-2, running 5s and lovin' it.

http://i88.photobucket.com/albums/k1...donutz/013.jpg

http://i88.photobucket.com/albums/k1...donutz/024.jpg

Geared a little high but it's staying cool and running great, Happy Happy
:yipi::yipi::yipi::yipi::yipi:

Differential Ratio: 4.3
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 48
Pinion Tooth Count: 23
Total Voltage: 18.50
Motor KV: 1600
Tire Diameter (inches): 5.25
Tire Ballooning (inches): .15
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 2.09 : 1
Total Ratio: 8.97391 : 1
Tire Circumference (inches): 17.44 inches (442.87 mm)
Rollout: 1.94:1
Total Motor Speed: 29600 RPM
Vehicle Speed: 54.46 mph (87.48 km/h)
Effective KV Value: 1600
KT constant: 0.85 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...

Gosh, this motor can take some serious punishment and still dishes out a healthy serving of real power :lol:... I bashed mine hard on Sunday and it was oodles of fun!!
I put some slicks (spent bow-ties) on it, filled the CD with some 50k oil... pulling full throttle was pure nonsense... the front end would not stay on the ground... even at speed,
a little jerk of the throttle lifted the front into a rolling wheelie with no effort... I'll be removing some of the oil or reducing the punch a little, because there is just 'too much'
torque to handle :lol:



That's looking really nice Bondonutz, love what you've done with the can... how did you remove the anodizing? Oven cleaner?... Have you recorded temps?
what kind of setup are you using with that diff... at 23/48, those tyres should swell up real quick... Post some vids! :lol:

Alien

Thanks AA,
The tires are belted with Nylon packing tape and balanced so they dont swell and work Tits.

Ashamed to say but it's a Chinese knock off of Mikes Slipperential, I bought it from a buddy of mine who purchased it last year despite my protest. He couldn't get it to work for himself so I got it for next to nothing. Seems to work ok despite a real hassle to get it tuned to work decent. I know it my heart it's junk compared to Mikes, so how long it'll last is anyones guess ? A genuine RCM unit is on my wish list.

Temps have ben great despite the the gearing, 20-25* over ambiant is the most I've gotten out of it. I ran a 6s with the same gearing and made multiple speed passes and still was only able to get 139* after 10 minutes.

The anodizing was stripped with Aluminum wheel acid, disassemble the motor and dropped it in a glass with the acid and soaked it for 5 minutes. Came out clean a s a whistle. Rinsed and blew dry with compressed air and a liberal shot of WD40 and reassembled. The acid just gets poured back into the bottle to be reused again.

The 1520 is a great motor, wish I bought several rather than just one :oops:

woah the deanod motor looks awesome!!!! i was worried the acid or oven cleaner would destroy the internals of the can?

Bondo, those are great temps! Remember i was running this motor in my 16-17lbs savage on 6s geared for 56mph! and only hitting 140-150 and that is all out for 15minutes till battery dies!

In a truggy i can see this geared for 65mph on 6s easily as they are a lot lighter than my savage!

I masked/sealed off the ends of the can with masking tape and created a seal with CA so NO or very little acid ever gets inside.

Hmmm... interesting approach on the stripping process... the temps look good too man... how much does that truggy weigh?

With 5s 40C 3300mah pack, body, tires It's 11.4lbs

That can looks great Bondonutz! Looks etched or sandblasted IMO. Nice job!

I have an alarm on the dx3s go off at 60C motor temp (which happens regularly in summer) and let it cool if it gets close to 70C. I don't know what the internal temps would be but Patrick says they are 200C magnets:rules::yipi:

Wow... that's a cool feature you got there... i will need to find something similar for my setup... 200c (392f) does sound a little high for internal temps...
what about the insulation coating on the wires, :oh: will it stand up to those temps?

Alien

Good question. I don't konw what winding wire is good for:neutral:

If you don't want to change your radio you could bolt on telemetry - http://www.hobbyking.com/hobbyking/s...dProduct=10343

Right... I did see that Telemetry System before... very cool tool... hope someone can shine some light on the max temps for the internals soon...

Alien