54LikesRC10B4/T4 Forum
01-08-2009, 09:25 PM
#6616
I've heard from some hobbyshopts its going to be about a 10 days till they get the new spur gears. Wish it would happen faster with CRCRC comming up.
01-08-2009, 09:28 PM
#6617
01-09-2009, 02:32 AM
#6618
Tech Master
I recently got a Putnam Propulsion 12x2 (Pt based) as my first foray into a new mod motor. Before that I was using an old Reedy 19x2.
The Putnam goes like a rocket, but I was reading somewhere that this type of motor was designed for 4 cell racing. Anyone got an insight into this? I had never thought about it before.
It has unbelievable power and i'm going to use it anyway, just keen to know if these motors are common in off-road racing really.......
The Putnam goes like a rocket, but I was reading somewhere that this type of motor was designed for 4 cell racing. Anyone got an insight into this? I had never thought about it before.
It has unbelievable power and i'm going to use it anyway, just keen to know if these motors are common in off-road racing really.......
01-09-2009, 03:22 AM
#6619
01-09-2009, 08:03 AM
#6620
More Voltage = More RPM
The performance difference is 21,090 RPMs.
The performance difference is 21,090 RPMs.
^ Thank You.
I have one more question. With my setup, what would be the performance difference in running a 2S 7.4V 30C 5000-6500mAh vs a 3S 11.1v 30C 4000mAh. The weight between then is nearly the same. Would this cause the 5700kV to be even more insanely fast? Is there a performance gain/loss for each setup?
I have one more question. With my setup, what would be the performance difference in running a 2S 7.4V 30C 5000-6500mAh vs a 3S 11.1v 30C 4000mAh. The weight between then is nearly the same. Would this cause the 5700kV to be even more insanely fast? Is there a performance gain/loss for each setup?
01-09-2009, 09:52 AM
#6623
So is it running a bigger pinion keeps the motor cooler or hotter? And if you change the pinion/spur size but keep the same ratio you get the same performance but possibly a cooler/hotter motor? For example, 21/74 yields a gear ratio of 9.16, 23/81 also has the same ratio of 9.16. In light of this you'd have the same ratio but a larger pinion, smaller spur. I'm still trying to figure out the best starting pinion size for a 5700kV motor.
01-09-2009, 10:31 AM
#6624
Tech Addict
iTrader: (7)
Someone metioned above that the 5400 kv motor was about equal to a 6.5 BL.. I ran a 6.5 for about a week before I got my 13.5.... i geared the 6.5 at 78/24 (8.45 FDR).... And the car felt great. Temps were good. It was just too much moto for my track... i think the novak website said to start the 6.5 around an 8 FDR.. As for the different pinion/spur combos yeilding the same FDRs Im not sure what to tell ya.. but in the example we dont have an associated spur that is 74 so I would use the other ratio which is available.. Start with a 24 pinion using the smallest AE spur available (78 right now) , check moto temps.. If they are over 175 degrees(at least for the BL Novak), then you are geared too high.. i would go down 1-2 teeth and try again..
01-09-2009, 09:20 PM
#6625
Guest
Racing
Thanks for the help guys! If u guys r in tn come down to bullet raceway and race in Milan tn!!! It's a big 1/10&1/8 track!
01-10-2009, 02:15 AM
#6626
What weight differential lube should i be using in my b4 im not really sure what to use or what the difference is i just put 30,000 wt. in there.HELPPPPP
01-10-2009, 07:02 AM
#6627
On the rear diff balls and rings there is a clear silicone grease--NOT OIL--that you apply to the diff balls and diff rings. The diff grease is very much thicker than the 30k diff oil. The grease will not fling off the rotating parts but the 30k diff oil will fling off soon. http://www.amainhobbies.com/product_...ducts_id/22260
