cammellostanco Posted January 23, 2021 Author Posted January 23, 2021 Thank you for helping out. I have plugged both motors directly into the hub (brand new Energizer Lithium). Front Motor: very strong, no problem. If I hold the wheels very tight, there is no whining noise from the motor. Rear: seem to be ok as well, If I hold the wheels very tight, there is no whining noise from the motor. When I connect both motors, and I hold the FRONT wheels all 4 stop, with no whining. All 4 wheels start to spin again as soon as I let go. If I hold the REAR wheels, all 4 stop and do not re-start when I let go. Very weird: after taking apart the wheels hubs and the front/rear axles and lubricating them, the 9398, though still weak, improved a lot.... Who knows??!!! I do not think point 3 is indicative of anything though. I am waiting for a new battery pack and a 3S LiPo to see if the results are different. When I will have the $ I will try with Buwizz. On the same track the 42099 running on 1.2v NiCd greatly outperforms the 9398 on new Energizer Lithium , I point the issue to the battery pack. Will post updates as soon as I can do more testing. Quote
Andman Posted January 23, 2021 Posted January 23, 2021 24 minutes ago, cammellostanco said: Thank you for helping out. I have plugged both motors directly into the hub (brand new Energizer Lithium). Front Motor: very strong, no problem. If I hold the wheels very tight, there is no whining noise from the motor. Rear: seem to be ok as well, If I hold the wheels very tight, there is no whining noise from the motor. When I connect both motors, and I hold the FRONT wheels all 4 stop, with no whining. All 4 wheels start to spin again as soon as I let go. If I hold the REAR wheels, all 4 stop and do not re-start when I let go. Very weird: after taking apart the wheels hubs and the front/rear axles and lubricating them, the 9398, though still weak, improved a lot.... Who knows??!!! I do not think point 3 is indicative of anything though. I am waiting for a new battery pack and a 3S LiPo to see if the results are different. When I will have the $ I will try with Buwizz. On the same track the 42099 running on 1.2v NiCd greatly outperforms the 9398 on new Energizer Lithium , I point the issue to the battery pack. Will post updates as soon as I can do more testing. How does your receiver look like? Is there a "V2" print on it? Quote
cammellostanco Posted January 23, 2021 Author Posted January 23, 2021 (edited) I have a V2, I purchased a new one on Aliexpress, we'll see. Edited January 24, 2021 by cammellostanco Quote
cammellostanco Posted February 3, 2021 Author Posted February 3, 2021 While I wait for the new IR receiver, I went ahead and connected the old IR v2 receiver to a 3S LiPo: the thing is a monster I know I did not find the solution, but with the abundance of power, the truck is now as fast as the 42099 crawler on NiZn AA and increased reduction gearing. I have put back in the 9398 the modified gears in the hubs, that is I have used again the increased reduction gears of my previous post. Let's see what happens with a new controller Quote
KevinMD Posted February 4, 2021 Posted February 4, 2021 On 1/23/2021 at 12:13 PM, cammellostanco said: I have a V2, I purchased a new one on Aliexpress, we'll see. Quote
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