What's the difference between these motors

**Fluid** · 08-20-2012, 03:41 AM

What's the difference between a 6.0 liter Corvette engine and a Nissan Juke 1.6 liter? I know you are trying to learn so here goes:

The longer 40mm motor will have more torque and be able to handle more watts and heat.
The 36mm motor has a higher Kv so it is more suited to 4S voltage.
The 40mm motor has a Kv suited to 5S or 6S.
The 40mm motor is a "Y" wind and can handle quite a bit of timing advance.
The wattage value for the 36mm motor is bogus compared to the 40mm motor.
I have no idea of the quality of the 'SSS' motors. The Leopards are decent budget motors.

For your use the 4082 motor is far more suitable. On 5S you will be turning around 26,500 rpm on the water, counter-rotating x447s will give speeds in the 50 mph range on a well-trimmed cat.

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**Mecka1990** · 08-20-2012, 06:18 AM

Originally posted by Fluid

What's the difference between a 6.0 liter Corvette engine and a Nissan Juke 1.6 liter? I know you are trying to learn so here goes:

The longer 40mm motor will have more torque and be able to handle more watts and heat.
The 36mm motor has a higher Kv so it is more suited to 4S voltage.
The 40mm motor has a Kv suited to 5S or 6S.
The 40mm motor is a "Y" wind and can handle quite a bit of timing advance.
The wattage value for the 36mm motor is bogus compared to the 40mm motor.
I have no idea of the quality of the 'SSS' motors. The Leopards are decent budget motors.

For your use the 4082 motor is far more suitable. On 5S you will be turning around 26,500 rpm on the water, counter-rotating x447s will give speeds in the 50 mph range on a well-trimmed cat.

.

so i will get about 50 mp/h with 2xleo 4082 1600kv 2Y? seems a little bit to slow, had thinked about 120 or 130 km/h.

the leopard gives me more speed then the others because he is bigger, can handle more power and a better prop if i understand that right.

**Mecka1990** · 08-20-2012, 06:22 AM

Some other informations for easyer calculaten of the endspeed:

2x Leo 4082 1600KV 2Y.
2x Swordfisch 200Amps Plus Esc (one BEC shut down , Y Harness to receiver)
2x X447 Counter Rotated Props
2x 5S Lipo 50/10C (one for each Esc)

**1945dave** · 08-20-2012, 01:41 PM

Originally posted by Mecka1990

seems a little bit to slow, had thinked about 120 or 130 km/h. .

Look, Fluid told you right. If you already own these motors then it is a no brainer and go ahead and start with the 4082's. If you are yet to buy these motors buy the 4082 2,000 kv version a slightly more agressive 5S motor. However, if you already own all 4 of these motors just get a extra set of motor mounts and swap the two sets of motors and try it for your self, they are almost interchangeable.

Dave

**Mecka1990** · 08-20-2012, 03:49 PM

i got both, the 1. and the 2., both 2x, the question is is the 1600kv leo fastet then the 2075 kv sss.

**Fluid** · 08-20-2012, 04:50 PM

The 36mm motors might indeed be a bit faster than the 40mm motors and x447 props.....for a few minutes anyway. Then after you've removed the burned-up motors and ESCs you can put in the right combination for that large hull. If you get some pitched-up x447 props you can increase the speed by at least 5 mph; the next size larger Octura R+L props are 50mm 3-blades - probably too much. How fast do you need to go? What kind of run times are you looking for? They are the opposite of each other - more speed = less run time and vice-versa.

.

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**bwells** · 08-20-2012, 05:06 PM

1945dave Is the need for an extra set of mounts due to the size of the motor or the manufacturer of the motor? (I'm assuming different mounting hole distance.)

**Mecka1990** · 08-20-2012, 05:09 PM

The 36mm motors might indeed be a bit faster than the 40mm motors and x447 props.....for a few minutes anyway. Then after you've removed the burned-up motors and ESCs you can put in the right combination for that large hull. If you get some pitched-up x447 props you can increase the speed by at least 5 mph; the next size larger Octura R+L props are 50mm 3-blades - probably too much. How fast do you need to go? What kind of run times are you looking for? They are the opposite of each other - more speed = less run time and vice-versa.

want about 10 minutes runtime, nothing more.

50 mph are to low, bitz and hor saying with 43mm prop counter rotation about 120 km/h +. so that seems very weird to me.

so the leopard isnt faster then the sss 2075 kv 36mm motor, good to know, thanks for that.

max speed setup i wish.

here a link from the sites.

Bitz: http://shop.rcboatbitz.com.au/index....roducts_id=735
HOR: http://www.horracing.com/product_inf...roducts_id=566

**1945dave** · 08-20-2012, 05:14 PM

What we have here is a failure to communicate <smile>! I think the term faster is where this goes sideways for you. Look, The SSS 3674 motor turns higher rpm's unloaded ( remember UNLOADED) but with any real expected load for a 41 inch cat the expectations are that the 3640 will struggle to handle the load. while the LEO 4082 will not struggle. You asked for our opinion and advice and Fluid and I agree that the LEO motors will make you smile. The SSS 3674 motors will over heat trying to turn those props the rpm's you need go as fast as you want to go. Now if you had a smaller lighter ship the 3674 motors might do really well but I don't think that will be your case. Anything else just ask.

Dave

**Mecka1990** · 08-20-2012, 05:15 PM

Originally posted by bwells

1945dave Is the need for an extra set of mounts due to the size of the motor or the manufacturer of the motor? (I'm assuming different mounting hole distance.)

the motor mounts on the stock zonda full setup got both mounting holes for 36 and 40mm motors, that information i got from hor, but im not sure because i dont get the boat today, is somewhere in the air and the shipping information doesnt change since last week -.-

**Mecka1990** · 08-20-2012, 05:18 PM

Originally posted by 1945dave

What we have here is a failure to communicate <smile>! I think the term faster is where this goes sideways for you. Look, The SSS 3674 motor turns higher rpm's unloaded ( remember UNLOADED) but with any real expected load for a 41 inch cat the expectations are that the 3640 will struggle to handle the load. while the LEO 4082 will not struggle. You asked for our opinion and advice and Fluid and I agree that the LEO motors will make you smile. The SSS 3674 motors will over heat trying to turn those props the rpm's you need go as fast as you want to go. Now if you had a smaller lighter ship the 3674 motors might do really well but I don't think that will be your case. Anything else just ask.

Dave

now i understand, ok.

so iwill put the 40mm leo motors into it, or i sell the 1600kv motors and buy 40mm 2000kv motors for it, gonna be faster how you say.

**1945dave** · 08-20-2012, 05:19 PM

Originally posted by bwells

1945dave Is the need for an extra set of mounts due to the size of the motor or the manufacturer of the motor? (I'm assuming different mounting hole distance.)

NO! This just a mater of the diameter of the two motors. 36 mm and 40mm. The typical aluminum clamping style mounts are interchangable with just the diameter of the clamp being different by 4 mm. The front end bell mounting holes should be the same.

Dave

**1945dave** · 08-20-2012, 05:23 PM

Originally posted by Mecka1990

now i understand, ok.

so iwill put the 40mm leo motors into it, or i sell the 1600kv motors and buy 40mm 2000kv motors for it, gonna be faster how you say.

Now you got it. The LEO could handle 6S batteries under load while the higher kv 3674 motor is better designed for 4S batteries.

Dave

**Mecka1990** · 08-20-2012, 05:55 PM

thanks dave

What's the difference between these motors

What's the difference between these motors

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