Speed Problem
09-30-2012, 09:26 AM
#1
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Speed Problem
Hey, just purchased by first hobby grade R/C today, a HPI RACING MINI-TROPHY - #103034. I am running a 2C 7.4 - 5000mah LIPO and the truck ran great on the first run which I stopped after about 15 minutes. On the 2nd run it would only run at about 1/2 speed for 10 minutes then really started to slow down, stopped it and could smell something burning. Disconnected the battery right away and pulled it out - no smell from the battery.
Let it all cool down overnight and hooked it up in the morning, no smell however running extremely slow - like walking speed.
Checked the voltage on the battery it is right up - tried resetting the throttle setting on the transmitter, nothin'.
Any ideas?
Let it all cool down overnight and hooked it up in the morning, no smell however running extremely slow - like walking speed.
Checked the voltage on the battery it is right up - tried resetting the throttle setting on the transmitter, nothin'.
Any ideas?
09-30-2012, 09:45 AM
#2
RE: Speed Problem
probably the motor
If I remember it right its brushed (if it is) pull the 2 wires off that go to the esc, and connect it straight to the battery. If the motor spins fast then its the ESC.
If I remember it right its brushed (if it is) pull the 2 wires off that go to the esc, and connect it straight to the battery. If the motor spins fast then its the ESC.
09-30-2012, 10:47 AM
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RE: Speed Problem
Thanks! Did that and it appears to be spinning at same speed.
Will take it back to the store - should be a warranty fix hopefully!
Will take it back to the store - should be a warranty fix hopefully!
09-30-2012, 05:06 PM
#5
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RE: Speed Problem
ORIGINAL: The_Shark
lipo eats brushed motors just so you know...
lipo eats brushed motors just so you know...
10-01-2012, 09:29 AM
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RE: Speed Problem
Called HPI - they are mailing out a new motor under warranty. Took the LIPO back to the Hobby Store where purchased and got a Nimh instead - hopefully the replacement motor will last longer!
Thanks for the help and recommendations!
Thanks for the help and recommendations!
10-01-2012, 10:10 AM
#7
RE: Speed Problem
ORIGINAL: Haddi Taha
I normally run silvercans and lipo with good luck but yeah, brushed motors cannot handle lipo that well. You can get a cheap brushless system from hobbypartz which will give you more speed, runtime and will last longer. If you are going to pay more than $40 for a brushed esc, go to brushless.
ORIGINAL: The_Shark
lipo eats brushed motors just so you know...
lipo eats brushed motors just so you know...
only way it would burn a motor out is if the vehicle is geared high from the get go.
Also the HPI motors if its the 15t those are turds.. I had one burn out in 4 mins on NiMh
10-01-2012, 05:32 PM
#8
Senior Member
RE: Speed Problem
ORIGINAL: SyCo_VeNoM
ditto run my tamiya 27t motors fine on lipo
only way it would burn a motor out is if the vehicle is geared high from the get go.
Also the HPI motors if its the 15t those are turds.. I had one burn out in 4 mins on NiMh
ORIGINAL: Haddi Taha
I normally run silvercans and lipo with good luck but yeah, brushed motors cannot handle lipo that well. You can get a cheap brushless system from hobbypartz which will give you more speed, runtime and will last longer. If you are going to pay more than $40 for a brushed esc, go to brushless.
ORIGINAL: The_Shark
lipo eats brushed motors just so you know...
lipo eats brushed motors just so you know...
only way it would burn a motor out is if the vehicle is geared high from the get go.
Also the HPI motors if its the 15t those are turds.. I had one burn out in 4 mins on NiMh
