R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro On-Road

Reply
 
Thread Tools Search this Thread
Old 07-02-2006, 09:31 AM   #1
Tech Apprentice
 
Join Date: Feb 2006
Posts: 96
Default Servo for Throttle?

Hi all, i m new to GP. Please advise what type of servo should I used for throttle?? Is it better to use Analog or Digital?? Hi-speed or Hi toque??. Was told that using analog for throttle is better coz it is near to the engine. Thanks in advance...
hot_version is offline   Reply With Quote
Old 07-02-2006, 11:32 AM   #2
Tech Elite
 
Join Date: Aug 2003
Location: Henderson, NV
Posts: 4,148
Trader Rating: 28 (100%+)
Send a message via AIM to Scott Fisher
Default

Quote:
Originally Posted by hot_version
Hi all, i m new to GP. Please advise what type of servo should I used for throttle?? Is it better to use Analog or Digital?? Hi-speed or Hi toque??. Was told that using analog for throttle is better coz it is near to the engine. Thanks in advance...
You are going to get both answers to this question, so be prepared.

Use an analog servo for throttle/brake. If you are a risk taker, use a digital. Digital servos "check and adjust" their positions 3 times more often than analog servos. When you use the brakes on your car you are essentially stalling the servo. Stalling meaning telling your servo to go to a position it can't get to. This is bad for all types of servos, but because the digitals pulse at 3x the rate it causes them to heat up faster. This has a result of higher failure rates. Either type of servo can fail, but the digitals have a higher chance of failure in the throttle/brake position.

I know a bunch of you guys are going to get on here and say you have been using digitals on your throttle with no problems. Doesn't change the fact that they are more prone to failure in that spot.
__________________
| Capricorn | Ybslow | Proline-Protoform | Johnny Bravo Racing | Desoto Racing | Murnan Modified | Matrix Tires | Powermaster Fuel |
Scott Fisher is offline   Reply With Quote
Old 07-02-2006, 09:05 PM   #3
Tech Apprentice
 
Join Date: Feb 2006
Posts: 96
Default

Thanks for the reply. Actually I m deciding to get either the SANWA VX (Analog) or FUTABA 9451 (Digital) for throttle. I m using KO Helios, so I will prefer to get the Futaba digital servo so that I can used the Advanced High Speed Response. But if the digital is prone to failure then I will get the Sanwa VX.
hot_version is offline   Reply With Quote
Old 07-02-2006, 09:29 PM   #4
Tech Initiate
 
Join Date: Jan 2005
Location: Austin TX
Posts: 26
Default Futaba

I run the Futaba 9451 in my mtx4 and i love it, the price is right too.
I run a 1400 battery pack and it can handel both my 9451.
We run the SWCS in Texas an our mains are 30-45 min. and no problem so far.

ICULKN an the 9451
ICULKN is offline   Reply With Quote
Old 07-03-2006, 09:54 PM   #5
Tech Fanatic
 
uniquexme's Avatar
 
Join Date: Feb 2006
Location: Sibu, Sarawak
Posts: 901
Trader Rating: 12 (100%+)
Send a message via MSN to uniquexme Send a message via Yahoo to uniquexme Send a message via Skype™ to uniquexme
Default

m using Sanwa VX for throttle, VR for steering. m also using KO Helios, no problem at all.
uniquexme is offline   Reply With Quote
Old 07-03-2006, 10:54 PM   #6
Tech Elite
 
Join Date: Aug 2003
Location: Henderson, NV
Posts: 4,148
Trader Rating: 28 (100%+)
Send a message via AIM to Scott Fisher
Default

Quote:
Originally Posted by uniquexme
m using Sanwa VX for throttle, VR for steering. m also using KO Helios, no problem at all.

The VX is an analog servo. Good servo.
__________________
| Capricorn | Ybslow | Proline-Protoform | Johnny Bravo Racing | Desoto Racing | Murnan Modified | Matrix Tires | Powermaster Fuel |
Scott Fisher is offline   Reply With Quote
Old 07-03-2006, 11:34 PM   #7
Tech Fanatic
 
uniquexme's Avatar
 
Join Date: Feb 2006
Location: Sibu, Sarawak
Posts: 901
Trader Rating: 12 (100%+)
Send a message via MSN to uniquexme Send a message via Yahoo to uniquexme Send a message via Skype™ to uniquexme
Default

yeah it is a good servo. good value for money. furthermore, its the cheapest among KO & Futaba.

but i heard that digital servos are not good for nitro cars, as its too fast, so recommended for EP cars, not too sure myself though.
uniquexme is offline   Reply With Quote
Old 07-04-2006, 05:04 AM   #8
Tech Master
 
fritzD's Avatar
 
Join Date: Sep 2005
Location: Cebu City, Philippines
Posts: 1,136
Trader Rating: 1 (100%+)
Send a message via Yahoo to fritzD
Default

I use s9451 for throtle. No problems ever since. I hope none will rise.
fritzD is offline   Reply With Quote
Old 07-04-2006, 02:17 PM   #9
Tech Master
 
DS Motorsport's Avatar
 
Join Date: Aug 2005
Location: The Netherlands
Posts: 1,440
Trader Rating: 2 (100%+)
Default

i use 2 digital sanwa's, and they work great, you have to set you end points correctly otherwise the servo's will overheat and fail.
First i dind't set the end points and i smoked a futaba digital servo in 1 hour.
The sanwa's i have for 2 months and there still ok.
And for somethings you have too use digitals, like the spectrum system or the hrs system from futaba.
__________________
P1-RC.com
DS Motorsport is offline   Reply With Quote
Old 07-04-2006, 02:43 PM   #10
Tech Adept
 
MechanicJon's Avatar
 
Join Date: Dec 2004
Location: Worlds biggest oven! Phoenix Az
Posts: 117
Send a message via MSN to MechanicJon
Default

Ko Propo has a pretty good sale on new analog servos. http://www.shopatron.com/product/pro...605.1054.0.0.0
MechanicJon is offline   Reply With Quote
Old 07-04-2006, 04:34 PM   #11
Tech Elite
 
Join Date: Aug 2003
Location: Henderson, NV
Posts: 4,148
Trader Rating: 28 (100%+)
Send a message via AIM to Scott Fisher
Default

Quote:
Originally Posted by DS Motorsport
i use 2 digital sanwa's, and they work great, you have to set you end points correctly otherwise the servo's will overheat and fail.
First i dind't set the end points and i smoked a futaba digital servo in 1 hour.
The sanwa's i have for 2 months and there still ok.
And for somethings you have too use digitals, like the spectrum system or the hrs system from futaba.

You don't have to use digital servos with spektrum.
__________________
| Capricorn | Ybslow | Proline-Protoform | Johnny Bravo Racing | Desoto Racing | Murnan Modified | Matrix Tires | Powermaster Fuel |
Scott Fisher is offline   Reply With Quote
Old 07-05-2006, 01:49 AM   #12
Tech Fanatic
 
uniquexme's Avatar
 
Join Date: Feb 2006
Location: Sibu, Sarawak
Posts: 901
Trader Rating: 12 (100%+)
Send a message via MSN to uniquexme Send a message via Yahoo to uniquexme Send a message via Skype™ to uniquexme
Default

yeah, m also using Spektrum system, and i use analogue servos, VX & VR
uniquexme is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Steering servo and Throttle servo same speed? straightaway Nitro On-Road 4 11-06-2007 08:21 PM
Throttle servo gojoecrewchief1 Rookie Zone 5 09-14-2007 08:33 PM
Looking for throttle servo edward Haywood Nitro On-Road 34 08-01-2007 11:22 PM
Airtronics 94537 Servo Throttle Servo HS Imdadundada7 R/C Items: For Sale/Trade 23 06-19-2006 09:55 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 06:59 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net