Leopard 5692 motor mount

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Ol' fart

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Some people have asked if a leopard 5692 can fit in an XBE. Yes, it will fit, and I will do it, but the problem I am having is the gear ratio. You can get one with 540 kv up to 1350 kv running on anywhere from 6c to 20c.


Thats a VERY wide RPM range to cover with the few gears I can make fit.


I'll need to run a 48 tooth main gear to clear the drive train or the motor won't fit. I can get pinion gears from 10 to 16 to fit so...


That will give a ratio from 4.8 to 1 down to 3to1. I think this about right for the 1000kv motor with 10c. With the 48/16 gears on 10c you would go about 60 mph. ( I don't know the drive train ratio so I'm guessing) The CC1717 does about 50 mph on 6c with a 4.1 to 1 ratio (1580kv)


For super top end you could use a 46 main and an 18 pinion for a 2.55 to 1 ratio but you would have to be insane.


This motor mount will also fit the CC1717 and fix the need for pinion gears smaller than 10. In fact any motor smaller the 5692 will fit.


Whatever motor/kv/c's you run you'll have a gear ratio's from 4.8 to 1 down to 3 to 1. The leopard 5692 will only have a range of 4.0 to 1 down to 3 to 1


Does this sound like the kind of gearing you want???? comments please.
 
The differential ratio is 3:1 :)


This couldnt be coming at a better time, my 1717 might've just went poof. After a 10min run it was so hot it started losing a little power. I immediately shut it down and began cooling it. Hopefully it didn't demagnatize itself.


That sounds like plenty of ratio options for sure. I will crunch some numbers more tonight and send ya an email. I had planned on running the 500kv version on 12s (when a suitable car ESC comes out) and gear it for about 40mph. That'd be a cool running, highly efficient system that ya could run for a long time(like a 30min main).
 
ol'fart dude and obeast...


now that i have a xb-e comming i'm really glad your making these parts and doing the r&d for this vehicle. i'll be looking to upgrade before power jam, not so much for run time, 15 min on 6s is fine with me for now, but trick parts and usable power is what i'm looking for. thanks guys :D
 
Heres the speed calculator I use, its VERY accurate. Thanks goes to BrianG on RCM for putting it together.


http://scriptasylum.com/rc_speed/top_speed.html


All the important ratios are 3:1 Differential ratio, 1:1 transmission ratio, 6 inch tire diameter (stock size) and whatever pinion/spur/Cell count/ KV rating you choose.


With the 540kv Leopard 5692, 48 tooth Spur, 14tooth pinion(thats readily available) on 12s Lipo the top speed will be 41mph. Thats just about perfect, IMO.


Im going to edit some numbers for the 1717 on this in a minute.


The EDIT for 1717:


With the Castle 1717 1580KV, 48 spur, stock 10tooth pinion on 6s, and stock wheels/tires top speed is considerably more manageable at 43mph. Again, thats just about perfect!
 
Last edited by a moderator:
Obeast44 said:
Heres the speed calculator I use, its VERY accurate. Thanks goes to BrianG on RCM for putting it together.
http://scriptasylum.com/rc_speed/top_speed.html


All the important ratios are 3:1 Differential ratio, 1:1 transmission ratio, 6 inch tire diameter (stock size) and whatever pinion/spur/Cell count/ KV rating you choose.


With the 540kv Leopard 5692, 48 tooth Spur, 14tooth pinion(thats readily available) on 12s Lipo the top speed will be 41mph. Thats just about perfect, IMO.


Im going to edit some numbers for the 1717 on this in a minute.


The EDIT for 1717:


With the Castle 1717 1580KV, 48 spur, stock 10tooth pinion on 6s, and stock wheels/tires top speed is considerably more manageable at 43mph. Again, thats just about perfect!
Click to expand...
Thanks Obeast44. I'll go forward with the motor mount based on a 48 main gear. I'm going to try making the main gear out of aluminum. If it holds up it will be much cheaper than a steel gear($30+)
 
Hopefully aluminum will work work. Setting the mesh correctly will be of utmost importance with it.
 
Obeast44 said:
Hopefully aluminum will work work. Setting the mesh correctly will be of utmost importance with it.
Click to expand...
Thats the only thing, someone could set it wrong and , of course, blame it on the gear. I'll have the gear hard anodized and make it from 7075, if that dosn't hold up then steel is it.
 
So I just seen the pics of the chassis.....God damn it looks tight. I am looking forward to that steering adjustment to remove the slop. And I too will be in line for one of those chassis.
 
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