motor keeps bogging!

[ninetwofiveRC]

well, got a 27t trinity motor for my scx10. now that its hooked up. its bogs out really bad from a dead stop. my esc can handle down to a 12t and battery is fully charged. its like its not getting enough power. it works fine when i pick it up or ease on the throttle. but when i floor it, thats when it bogs.

what do you think it could be?

brushes are fine
comm is fine
conections are fine


please help! i really wanna get my truck running!

thanks!

[CrawlinClodKiller]

Geared to high. Use a lower tooth count pinion.

[JeremyH]

What ESC?

[ninetwofiveRC]

Originally Posted by CrawlinClodKiller

Geared to high. Use a lower tooth count pinion.

really? im running 75t and 23t pinion. ill try the stock gearing and see how it is.

[ninetwofiveRC]

Originally Posted by JeremyH

What ESC?

traxxas xl-5

[WIDELOAD]

Originally Posted by ninetwofiveRC

really? im running 75t and 23t pinion. ill try the stock gearing and see how it is.

Yes, that gearing is way high. Try going back to the stock 87t spur.

But in saying that, it sounds like the battery cant handle the instant amp draw the motor is asking for when you punch it.
I had the same symptoms with my comp rig ages ago and traced it back to old batteries that weren't giving enough discharge.

Try putting the spur back to stock. If that doesn't work, try a different battery.

[crawlinisfun]

Originally Posted by WIDELOAD

it sounds like the battery cant handle the instant amp draw the motor is asking for when you punch it.
I had the same symptoms with my comp rig ages ago and traced it back to old batteries that weren't giving enough discharge.

most likely the battery

[Charlie-III]

It could be a couple of things, already mentioned.

1-You likely dropped the motor wind from stock (from a ~55T to 27T), thus it WANT's to spin faster, but you had the original motor geared for faster. The 27T motor is having issues spinning up due to the gearing.
2-You battery may not be up to the task of the lower turn motor.

How is your gear mesh? If it's too tight, it can also make the rig do what you are describing.

[It usually runs fine]

Gear mesh is one thing to check. Pick the car up off the floor and punch it, if it cuts out then you are having a current problem. What plugs are you running, Tamiya? What battery?

[ninetwofiveRC]

Originally Posted by It usually runs fine

Gear mesh is one thing to check. Pick the car up off the floor and punch it, if it cuts out then you are having a current problem. What plugs are you running, Tamiya? What battery?

gear mesh is perfect. it works fine when its off the ground. and running deans. on venom, racers edge 6 cell nimh packs

[ninetwofiveRC]

Originally Posted by Charlie-III

It could be a couple of things, already mentioned.

1-You likely dropped the motor wind from stock (from a ~55T to 27T), thus it WANT's to spin faster, but you had the original motor geared for faster. The 27T motor is having issues spinning up due to the gearing.
2-You battery may not be up to the task of the lower turn motor.

How is your gear mesh? If it's too tight, it can also make the rig do what you are describing.

yea i had a integy lathe 35t on 75t-23t gearing, worked fine but wasnt fast enough
so i installed the 27t on same gearing and bogs to much. im goin to try the stock gearing and see if its better

and gear mesh is perfect.

[ninetwofiveRC]

Originally Posted by WIDELOAD

Yes, that gearing is way high. Try going back to the stock 87t spur.

But in saying that, it sounds like the battery cant handle the instant amp draw the motor is asking for when you punch it.
I had the same symptoms with my comp rig ages ago and traced it back to old batteries that weren't giving enough discharge.

Try putting the spur back to stock. If that doesn't work, try a different battery.

yea im going to try the stock spur on it. see if that helps. my batterys should be fine. they hold a good charge. there 6 cells nimh. over 3000mah

i might try a lipo out

[2500hdon37s]

Originally Posted by Charlie-III

It could be a couple of things, already mentioned.

1-You likely dropped the motor wind from stock (from a ~55T to 27T), thus it WANT's to spin faster, but you had the original motor geared for faster. The 27T motor is having issues spinning up due to the gearing.
2-You battery may not be up to the task of the lower turn motor.

How is your gear mesh? If it's too tight, it can also make the rig do what you are describing.

uhh rtr scx-10s come with a 27t motor.

but this gearing is way too high! and IMO nimh's suck compared to lipos

[khwilliams]

Originally Posted by ninetwofiveRC

yea im going to try the stock spur on it. see if that helps. my batterys should be fine. they hold a good charge. there 6 cells nimh. over 3000mah

i might try a lipo out

Defiantly switch to lipo, something over 30c discharge rate would be just fine! I know the initial cost sucks but you won't be disappointed!

[alextronique]

When you make any change on electric setup do not forget to re-calibre your esc.

[ninetwofiveRC]

Originally Posted by alextronique

When you make any change on electric setup do not forget to re-calibre your esc.

i know, gotta get a LVC.

[ninetwofiveRC]

Originally Posted by khwilliams

Defiantly switch to lipo, something over 30c discharge rate would be just fine! I know the initial cost sucks but you won't be disappointed!

yea ive been wanting too. but its just to pricey for me right now. expecialy a charger. but i think im gunna start saving for it!

[Calderwood]

Originally Posted by ninetwofiveRC

yea ive been wanting too. but its just to pricey for me right now. expecialy a charger. but i think im gunna start saving for it!

Hobbyking has lipo chargers for very cheap. A friend of mine has great luck with this accucell-6 for $23: http://www.hobbyking.com/hobbyking/s...idProduct=7028

[ninetwofiveRC]

yea so i just put the stock gearing on (87t, 20t) and still does the same thing. should i switch out the stock bullet conectors for some deans?

[Charlie-III]

Originally Posted by ninetwofiveRC

should i switch out the stock bullet conectors for some deans?

Yeppers......get rid of any bullet or Tamiya connectors (with the exception of the heavy duty CC style bullets). The cheaper bullets & Tamiyas will degrade over time and add resistance to the connection. This makes heat which makes it all worse.