RunRyder RC
 2  Topic Subscribe
WATCH
 1 page 969 views POST REPLY
HomeOff Topics › rc car servo upgrade question??
11-07-2004 04:00 AM  13 years agoPost 1
sean

rrNovice

Wappingers Falls, New York, USA

My Posts: All  Forum  Topic

i am thinking about upgrading the steering servo in my rc car to a Futaba S3305. It says on a site that you must have a high current rx battery to run this high touque (124oz/in) servo. Currently all i have in my car is four alkaline duracell AA batteries. Will this be enough? How much current is this anyway? Will i have to buy a heavier current nimh hump battery that's 1400mah?

Thanks a lot!!

Sean

PM  EMAIL  GALLERY  Attn:RR  Quote
11-07-2004 04:11 AM  13 years agoPost 2
JitsuGuy

rrKey Veteran

Tulsa, Oklahoma

My Posts: All  Forum  Topic

You must run a Nitro car cause steering servo's run off of the battery pack that powers the motor in the electric cars. And since I don't know anything about Nitro racing (yet) I can't offer you any advice.

J

PM  EMAIL  Attn:RR  Quote
11-07-2004 04:14 AM  13 years agoPost 3
sean

rrNovice

Wappingers Falls, New York, USA

My Posts: All  Forum  Topic

good luck then JitsuGuy!!!!!


I do run a nitro car. Its an ofna ultra lx pro.

PM  EMAIL  GALLERY  Attn:RR  Quote
11-07-2004 04:41 AM  13 years agoPost 4
docloc

rrApprentice

WI, Osceola

My Posts: All  Forum  Topic

I would think that a 9350 would be a good servo for steering,high torque and somewhat fast. I have some 2100 AA rechageable batteries that I use in my TT buggy.I also have a 1 hour charger for them. I have extras so that I can change them out. Of course now that I have heli's I don't mess with the buggy much anymore.

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-07-2004 07:02 AM  13 years agoPost 5
Mr.Green

rrVeteran

Kaysville, Utah

My Posts: All  Forum  Topic

You need to throw that plastice battery holder in the garbage. Pick up a decent 6 volt battery pack - you get more power out of your servos and faster speeds. Then go with an S9350 or S9351. I ran and S9350 in my Mugen MBX -5 for a while and loved it. You also couldn't go wrong with an Airtroncis 94359Z or 94358Z.

Mr.Green

PM  EMAIL  GALLERY  Attn:RR  Quote
11-07-2004 08:58 PM  13 years agoPost 6
PaulH-MA

rrVeteran

Boston, MA

My Posts: All  Forum  Topic

I have run buggies in the past. Your best bet is to get a 6v (5-cell) battery pack and then use Futaba S9451 servos for both steering and throttle/brake functions. The S9451 is a digital servo with 121 oz./in. of torque and 0.10 sec/60 degrees in speed. Crisp steering with perfect centering, and really strong brakes.

You won't regret the change.

--Paul

TREX 450
Bergen Intrepid Gasser x2

PM  EMAIL  Attn:RR  Quote
11-07-2004 10:42 PM  13 years agoPost 7
sean

rrNovice

Wappingers Falls, New York, USA

My Posts: All  Forum  Topic

thanks a lot guys but how much current should i get in the battery pack to run that servo?

PM  EMAIL  GALLERY  Attn:RR  Quote
11-07-2004 11:16 PM  13 years agoPost 8
Tailspinner

rrVeteran

JAMAICA, NY

My Posts: All  Forum  Topic

A five cell pack is all you'll need

Are you on the list?

PM  EMAIL  GALLERY  Attn:RR  Quote
11-07-2004 11:54 PM  13 years agoPost 9
sean

rrNovice

Wappingers Falls, New York, USA

My Posts: All  Forum  Topic

ok, so as long as its five cell (6v) it shouldn't matter what current its rated?

PM  EMAIL  GALLERY  Attn:RR  Quote
11-08-2004 02:52 AM  13 years agoPost 10
sean

rrNovice

Wappingers Falls, New York, USA

My Posts: All  Forum  Topic

hmmmm... due to price and availability, im going to still get the S3305 w/124oz/in torq. Will a 1200mah battery be enough or do i need a 1450 or 1650 mah to get at least an hour of run time in?

thanks

PM  EMAIL  GALLERY  Attn:RR  Quote
11-08-2004 03:27 AM  13 years agoPost 11
PaulH-MA

rrVeteran

Boston, MA

My Posts: All  Forum  Topic

Nitro cars use 2/3A cells in the battery pack. The mAH rating isn't going to be that big of a deal. Most batteries of that size are somewhere between 1000 and 1200. The AA packs we use in helicopters are around 1600 mAH and have to drive five servos plus a gyro. Your nitro car will run the batteries down much more slowly.

Just go to your local hobby shop and ask for a 2/3A hump pack for an OFNA buggy.

--Paul

TREX 450
Bergen Intrepid Gasser x2

PM  EMAIL  Attn:RR  Quote
11-08-2004 09:20 PM  13 years agoPost 12
sean

rrNovice

Wappingers Falls, New York, USA

My Posts: All  Forum  Topic

thanks a lot i will

PM  EMAIL  GALLERY  Attn:RR  Quote
11-08-2004 09:39 PM  13 years agoPost 13
sean

rrNovice

Wappingers Falls, New York, USA

My Posts: All  Forum  Topic

actually i have one more question. Can the Great Planes ElectriFly AC Park Flyer Peak Charger (http://www2.towerhobbies.com/cgi-bi...?&I=LXCJE2&P=ML) fast charge the hpi 5 cell 6v 2/3A 1200mah battery pack (http://www2.towerhobbies.com/cgi-bi...?&I=LXFJT1&P=ML) ?

thanks this really helps!!

PM  EMAIL  GALLERY  Attn:RR  Quote
11-09-2004 12:44 AM  13 years agoPost 14
PaulH-MA

rrVeteran

Boston, MA

My Posts: All  Forum  Topic

Yup, that will work just fine. If you want something that you can use at the field, look into the MRC Super Brain 959. You can plug it in at home or clip it to your car battery in the field. It will peak charge both NiCd and NiMh batteries, 1-8 cells.

http://www2.towerhobbies.com/cgi-bi...p?&I=LXAVN1&P=0

I have been using one for Tx and Rx packs for a couple of years now with great results!

--Paul

TREX 450
Bergen Intrepid Gasser x2

PM  EMAIL  Attn:RR  Quote
11-09-2004 01:37 AM  13 years agoPost 15
sean

rrNovice

Wappingers Falls, New York, USA

My Posts: All  Forum  Topic

I checked out the Super Brain and i like it a lot but what kind of charge plug does it have on it?

i like that you can plug it in at home or in your car also.

thanks

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 969 views POST REPLY
HomeOff Topics › rc car servo upgrade question??
 Print TOPIC  Make Suggestion 

 2  Topic Subscribe

Sunday, June 24 - 12:24 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online