Talk 1520 - your experiences

[nuz69]

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 !

[ANGRY-ALIEN]

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

[nuz69]

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...

[Bondonutz]

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





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


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...

[ANGRY-ALIEN]

Originally Posted by nuz69

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...

Gosh, this motor can take some serious punishment and still dishes out a healthy serving of real power ... 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

Originally Posted by Bondonutz

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

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


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...

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!

Alien

[Bondonutz]

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

[Jahay]

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!

[Bondonutz]

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.

[ANGRY-ALIEN]

Originally Posted by Bondonutz

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

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

[Bondonutz]

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

[bruce750i]

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

[pinkpanda3310]

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

Originally Posted by Pdelcast

Not Neo magnets, as far as I know. We've never seen a magnet that was weakened at all -- unless it was overheated. Heat is really the only enemy of Neodymium magnets. The magnets we use are rated to 200C operational, so it's pretty tough to get them too hot. :)

[ANGRY-ALIEN]

Originally Posted by pinkpanda3310

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

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, will it stand up to those temps?

Alien

[pinkpanda3310]

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

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

[ANGRY-ALIEN]

Originally Posted by pinkpanda3310

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

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