Talk 1520 - your experiences - RC-Monster Forums

nuz69 · 05:30 AM

Be reading this, it just confirm what I though about this torque monster ^^ I just can't wait to have mine !!! Here is the setup I will probably run in my MBX5T :
Differential Ratio: 4.6
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 15
Total Voltage: 22.2
Motor KV: 1600
Tire Diameter (inches): 5.65
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 3.07 : 1
Total Ratio: 14.10667 : 1
Tire Circumference (inches): 17.75 inches (450.85 mm)
Rollout: 1.26:1
Total Motor Speed: 35520 RPM
Vehicle Speed: 42.32 mph (67.99 km/h)
Effective KV Value: 1600
KT constant: 0.85 oz-in/A
What about your motor timing guys ? I will probably put mine at 6 or 7 to maximize efficiency...
But it's out of stock!!!!!!!! :( :( :( :( :( :( :( Hope Mike will restock soon.
In fact i am still hesitating between this one and the 1717... but I am not sure if the RCM motor mount can handle a motor this big :(
Magman, do you have some space between chassis and your motor with RCM motor mount, or it is already too tigh with the 1520 ? The 1717 is larger..

magman · 03.24.2010, 10:09 AM

Quote:

Originally Posted by nuz69

Be reading this, it just confirm what I though about this torque monster ^^ I just can't wait to have mine !!! Here is the setup I will probably run in my MBX5T :
Differential Ratio: 4.6
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 15
Total Voltage: 22.2
Motor KV: 1600
Tire Diameter (inches): 5.65
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 3.07 : 1
Total Ratio: 14.10667 : 1
Tire Circumference (inches): 17.75 inches (450.85 mm)
Rollout: 1.26:1
Total Motor Speed: 35520 RPM
Vehicle Speed: 42.32 mph (67.99 km/h)
Effective KV Value: 1600
KT constant: 0.85 oz-in/A
What about your motor timing guys ? I will probably put mine at 6 or 7 to maximize efficiency...
But it's out of stock!!!!!!!! :( :( :( :( :( :( :( Hope Mike will restock soon.
In fact i am still hesitating between this one and the 1717... but I am not sure if the RCM motor mount can handle a motor this big :(
Magman, do you have some space between chassis and your motor with RCM motor mount, or it is already too tigh with the 1520 ? The 1717 is larger..

1. I did put small washers between center diff mounts and chassis to raise everything up a bit for more clearance

2. I have the motor timing to 0

3. IMO the 1717 is too big for a truggy, heck the 1520 is a bit on the large size, but, I wanted a motor that I would not have to worry about. I was running a 1515 ccneu before and that was just fine as well

nuz69 · 03.24.2010, 10:15 AM

OK thx.
I always heard that for à 4 poles, the best timing is between 5 and 10 ??? 0 is for a 2 poles motor no ?
A 1717 will be too much then ^^

magman · 03.24.2010, 10:22 AM

Quote:

Originally Posted by nuz69

OK thx.
I always heard that for à 4 poles, the best timing is between 5 and 10 ??? 0 is for a 2 poles motor no ?
A 1717 will be too much then ^^

IMO the 1717 is too much. For all my ccneu motors, I leave timing at 0 and have had no issues and I gear up if more speed is needed. Basically the higher the timing, the less efficient. Anyway, raising timing too much will decrease efficiency without any gain in power, so that means more heat.