lrp spx stock spec
#301
Tech Master
iTrader: (1)
Does SPX upper profiles only work with good batteries?
My SPX will perform better and longer when strong batteries are used. With other batteries you can't reep the benefits of the SPX's speed and timing because of the demand on the motor it requires! IMO!
Just my 2$
#302
Tech Elite
iTrader: (17)
My guess is that since the continuous discharge rating (C rating) is somewhat close (100A V 114), that the overall voltage was higher the entire run with the 5Ah pack vs your 3800 30C pack. The C rating is misleading to many. You are definitely not pulling those C ratings.
#303
Tech Elite
iTrader: (109)
ok guys, i'm looking for some suggestions for my setup.
normally use sphere comp esc, 4 cell nimh, lrp 13.5t stock spec brushless, and 35/96 gearing (64 pitch)
what would be some gearing suggestions if i switch to this setup?
spx comp esc, 1 cell lipo, lrp 13.5t stock spec brushless, and xx/96 gearing (64 pitch)
(i ask this here because of the other gearing talk with the spx)
normally use sphere comp esc, 4 cell nimh, lrp 13.5t stock spec brushless, and 35/96 gearing (64 pitch)
what would be some gearing suggestions if i switch to this setup?
spx comp esc, 1 cell lipo, lrp 13.5t stock spec brushless, and xx/96 gearing (64 pitch)
(i ask this here because of the other gearing talk with the spx)
Last edited by LOW ET; 05-19-2009 at 05:25 PM.
#304
I can't understand why your 5000mah rated at 20C had more punch then my 3800mah rated at 30C. I wonder if the "C" ratings are just the battery companies way to suck us into buying one brand over the other.
My SPX will perform better and longer when strong batteries are used. With other batteries you can't reep the benefits of the SPX's speed and timing because of the demand on the motor it requires! IMO!
Just my 2$
My SPX will perform better and longer when strong batteries are used. With other batteries you can't reep the benefits of the SPX's speed and timing because of the demand on the motor it requires! IMO!
Just my 2$
just my 2cents
#305
Tech Master
iTrader: (16)
ok guys, i'm looking for some suggestions for my setup.
normally use sphere comp esc, 4 cell nimh, lrp 13.5t stock spec brushless, and 35/96 gearing (64 pitch)
what would be some gearing suggestions if i switch to this setup?
spx comp esc, 1 cell lipo, lrp 13.5t stock spec brushless, and xx/96 gearing (64 pitch)
(i ask this here because of the other gearing talk with the spx)
normally use sphere comp esc, 4 cell nimh, lrp 13.5t stock spec brushless, and 35/96 gearing (64 pitch)
what would be some gearing suggestions if i switch to this setup?
spx comp esc, 1 cell lipo, lrp 13.5t stock spec brushless, and xx/96 gearing (64 pitch)
(i ask this here because of the other gearing talk with the spx)
I don't know how big your track is, or if you're on carpet or pavement, but your 4-cell gearing of 35/96 is way too low, giving you a 50mm rollout with a 44mm (1.73") tall rear tire. The recommened gearing from LRP is 56mm, and that is VERY conservative. You should be around a 70-80mm rollout with 4-cell and 13.5T motor. At your current gearing, your motor will be running at max RPM too much. Brushless motors like lots of gear to take advantage of the fat low-end torque.
With a 96T Spur, you will probably not be able to reach the correct gearing, needing a large 55T Pinion to get you an 80mm Rollout with 44mm tire, as most cars can't fit that much gear in the pod without pushing the motor all the way to the back. I highly suggest you get some 76T spurs, made by PRS or RW Racing, and also pick up some pinions between 44-53T to gear correctly for rear tires between 46.5mm - 41mm.
Last edited by kn7671; 05-20-2009 at 03:42 AM.
#306
Tech Elite
iTrader: (109)
I run the LRP SPX and LRP 13.5 Stock Spec motor with 1-cell LiPo, and have been gearing around an 85-90mm rollout with the SPX on Profile 7, no drag or initial brake.
I don't know how big your track is, or if you're on carpet or pavement, but your 4-cell gearing of 35/96 is way too low, giving you a 50mm rollout with a 44mm (1.73") tall rear tire. The recommened gearing from LRP is 56mm, and that is VERY conservative. You should be around a 70-80mm rollout with 4-cell and 13.5T motor. At your current gearing, your motor will be running at max RPM too much. Brushless motors like lots of gear to take advantage of the fat low-end torque.
With a 96T Spur, you will probably not be able to reach the correct gearing, needing a large 55T Pinion to get you an 80mm Rollout with 44mm tire, as most cars can't fit that much gear in the pod without pushing the motor all the way to the back. I highly suggest you get some 76T spurs, made by PRS or RW Racing, and also pick up some pinions between 44-53T to gear correctly for rear tires between 46.5mm - 41mm.
I don't know how big your track is, or if you're on carpet or pavement, but your 4-cell gearing of 35/96 is way too low, giving you a 50mm rollout with a 44mm (1.73") tall rear tire. The recommened gearing from LRP is 56mm, and that is VERY conservative. You should be around a 70-80mm rollout with 4-cell and 13.5T motor. At your current gearing, your motor will be running at max RPM too much. Brushless motors like lots of gear to take advantage of the fat low-end torque.
With a 96T Spur, you will probably not be able to reach the correct gearing, needing a large 55T Pinion to get you an 80mm Rollout with 44mm tire, as most cars can't fit that much gear in the pod without pushing the motor all the way to the back. I highly suggest you get some 76T spurs, made by PRS or RW Racing, and also pick up some pinions between 44-53T to gear correctly for rear tires between 46.5mm - 41mm.
Last edited by LOW ET; 05-21-2009 at 12:06 PM.
#307
Skiddins
#309
Tech Adept
SPX problem
Hi all,
Does anyone recognize this and know what's causing it:When I pull to full throttle red/orange light starts blinking and nothing happens. When I give motor a nudge it will start running. I have tried two different motors, 3 sensor cables, nothing seams to work.
Thanks,
Z
Does anyone recognize this and know what's causing it:When I pull to full throttle red/orange light starts blinking and nothing happens. When I give motor a nudge it will start running. I have tried two different motors, 3 sensor cables, nothing seams to work.
Thanks,
Z
#310
Hi all,
Does anyone recognize this and know what's causing it:When I pull to full throttle red/orange light starts blinking and nothing happens. When I give motor a nudge it will start running. I have tried two different motors, 3 sensor cables, nothing seams to work.
Thanks,
Z
Does anyone recognize this and know what's causing it:When I pull to full throttle red/orange light starts blinking and nothing happens. When I give motor a nudge it will start running. I have tried two different motors, 3 sensor cables, nothing seams to work.
Thanks,
Z
#311
Tech Elite
iTrader: (114)
Hi all,
Does anyone recognize this and know what's causing it:When I pull to full throttle red/orange light starts blinking and nothing happens. When I give motor a nudge it will start running. I have tried two different motors, 3 sensor cables, nothing seams to work.
Thanks,
Z
Does anyone recognize this and know what's causing it:When I pull to full throttle red/orange light starts blinking and nothing happens. When I give motor a nudge it will start running. I have tried two different motors, 3 sensor cables, nothing seams to work.
Thanks,
Z
I had the same problem with a TC spec speedy, sent it back to LRP, there was a problem with the speedy, had to pay for a replacement.
Regards
Gary
#312
Hi all,
Does anyone recognize this and know what's causing it:When I pull to full throttle red/orange light starts blinking and nothing happens. When I give motor a nudge it will start running. I have tried two different motors, 3 sensor cables, nothing seams to work.
Thanks,
Z
Does anyone recognize this and know what's causing it:When I pull to full throttle red/orange light starts blinking and nothing happens. When I give motor a nudge it will start running. I have tried two different motors, 3 sensor cables, nothing seams to work.
Thanks,
Z
#313
Tech Fanatic
How much end float do you have in the rotor? If you have a lot, try spacing the rotor back towards the sensors. This can help the sensors find the rotor better, and has been known to get rid of 'cogging'.
Have you cleaned the motor out recently? If not, clean it throughly with a brush, and then wipe the sensors with a cotton bud soaked in motor cleaner. If the sensors are dirty, they don't work as well as they could.
HTH
Have you cleaned the motor out recently? If not, clean it throughly with a brush, and then wipe the sensors with a cotton bud soaked in motor cleaner. If the sensors are dirty, they don't work as well as they could.
HTH
#315
My guess is that internal resistance is much more important than the Coulomb rating, all other things being equal. (Which never happens , of course)