R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 03-12-2009, 05:33 PM   #1
Tech Addict
 
bluephi1914's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2008
Posts: 561
Trader Rating: 34 (100%+)
Default Question about Spektrum DX3R

Spektrum DX3R

Does anyone know how to slow down the speed of the steering servo in this radio.... or if it even has that option ?

I am thumbing through the manual and dont see that option... whereas i know other people that have different radios with that option




thanks in advance for any help
__________________
Mr. 17.5 's Rides ----> T3 EU / T2 008 EU (Vintage)
---------------------------------------------------------------
** NEXUSRACING.COM **

** Team Xray - Team Novak - Proline - Sorex - KO Propo - Team Trinity **
bluephi1914 is offline   Reply With Quote
Old 03-12-2009, 05:37 PM   #2
Tech Rookie
 
Join Date: Sep 2008
Location: NY
Posts: 6
Trader Rating: 1 (100%+)
Default

you can increase the exponential to decreases the steering sensitivity around neutral the higher the number the slower it reacts.
LogicBytes is offline   Reply With Quote
Old 03-12-2009, 05:44 PM   #3
Tech Addict
 
bluephi1914's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2008
Posts: 561
Trader Rating: 34 (100%+)
Default

Quote:
Originally Posted by LogicBytes View Post
you can increase the exponential to decreases the steering sensitivity around neutral the higher the number the slower it reacts.
Ok.. I thought that I could do that... but doesnt that make it super sensitive on the other side of the steering spektrum. meaning slow when i barely turn the wheel, but when i get past a certain point.. it will be super sensitive?
__________________
Mr. 17.5 's Rides ----> T3 EU / T2 008 EU (Vintage)
---------------------------------------------------------------
** NEXUSRACING.COM **

** Team Xray - Team Novak - Proline - Sorex - KO Propo - Team Trinity **
bluephi1914 is offline   Reply With Quote
Old 03-12-2009, 06:24 PM   #4
Tech Elite
 
JimmyMac's Avatar
 
Join Date: Oct 2001
Location: NC
Posts: 4,443
Trader Rating: 2 (100%+)
Default

Nope, can not slow down servo speed. Only expo.
__________________
M.J. McIntyre

Yokomo YRX12
Tamiya TB03
JimmyMac is offline   Reply With Quote
Old 03-12-2009, 06:26 PM   #5
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,186
Default

Personally I don't adjust servo speed...speed doesn't make a car steer faster or slower, it makes it more or less accurate and responsive to your inputs. The brain gets used to the delay between when you make an input and when the car does it so it takes some getting used to when that time is shortened.

Anyway from what I read in the manual it doesn't have a servo speed adjustment per say...but you can change the frame rate to slow down the response.
InspGadgt is offline   Reply With Quote
Old 03-12-2009, 06:26 PM   #6
Tech Adept
 
Join Date: May 2005
Posts: 241
Default

bluephi1914- It sounds like you may have a setup issue rather than a servo that's too fast. Most top drivers do not tune their radio to de-sensitize steering; they change setup on the car. You may want to consider car adjustments to cure your steering problem.
Larry Brown is offline   Reply With Quote
Old 03-12-2009, 09:56 PM   #7
Tech Regular
 
Join Date: Aug 2006
Location: So ILL Larry Dean Pope
Posts: 479
Trader Rating: 26 (100%+)
Default

As stated above try turning down the frame rate on the TX, which will in turn slow down the response time to the servo. I found a definite increase in response time when moving from the Spektrum pro system. 5.5 fastest< 16.5 slowest. HTH's.
__________________
REDLINE RC RACEWAY
ldp787 is offline   Reply With Quote
Old 03-12-2009, 10:33 PM   #8
Tech Elite
 
JimmyMac's Avatar
 
Join Date: Oct 2001
Location: NC
Posts: 4,443
Trader Rating: 2 (100%+)
Default

I don't think slowing down response time will do it. The servo will still turn as fast as it does, it just slows down the response time from when you turn the wheel, to when the car turns.... Or more like.... there will be more of a delay. If you want that delay... just play with expo. But once again, you can not adjust servo speed.

What effect are you trying to get?
__________________
M.J. McIntyre

Yokomo YRX12
Tamiya TB03
JimmyMac is offline   Reply With Quote
Old 03-13-2009, 06:31 AM   #9
Tech Regular
 
Join Date: Aug 2006
Location: So ILL Larry Dean Pope
Posts: 479
Trader Rating: 26 (100%+)
Default

Play with framerate before EXPO, the rest of the steering throw will not be linear when using EXPO.
__________________
REDLINE RC RACEWAY
ldp787 is offline   Reply With Quote
Old 03-14-2009, 07:06 AM   #10
Tech Addict
 
bluephi1914's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2008
Posts: 561
Trader Rating: 34 (100%+)
Default

Quote:
Originally Posted by Larry Brown View Post
bluephi1914- It sounds like you may have a setup issue rather than a servo that's too fast. Most top drivers do not tune their radio to de-sensitize steering; they change setup on the car. You may want to consider car adjustments to cure your steering problem.
I actually let a two of the top drivers at my track drive it and they say the car is fine (setup wise)... They said it should be fast and very responsive. I believe they told me that i need to catch up with the car.


Quote:
Originally Posted by JimmyMac View Post
I don't think slowing down response time will do it. The servo will still turn as fast as it does, it just slows down the response time from when you turn the wheel, to when the car turns.... Or more like.... there will be more of a delay. If you want that delay... just play with expo. But once again, you can not adjust servo speed.

What effect are you trying to get?

For me as a Newer driver... I was just wanting to slow it down until i was able to master the art or steering and driving the car a little better. dont get me wrong I can get around the track.. but at times its a struggle for me to consistantly do it and i was thinking if i were able to slow the servo down it would be a little easier to control... going into the turns.
__________________
Mr. 17.5 's Rides ----> T3 EU / T2 008 EU (Vintage)
---------------------------------------------------------------
** NEXUSRACING.COM **

** Team Xray - Team Novak - Proline - Sorex - KO Propo - Team Trinity **
bluephi1914 is offline   Reply With Quote
Old 03-14-2009, 07:29 AM   #11
Tech Champion
 
MikeXray's Avatar
 
Join Date: Oct 2006
Location: New York
Posts: 5,749
Trader Rating: 73 (100%+)
Default

Using a little bit of expo, say 10% with numb turn in a bit but not loose overal steering, it's not enough to make the car feel weird, I found that it took over 20% on my radio to have noticeable "shift" in steering response with expo, it's a 3pk though so the curves might be slightly different.
__________________
Mike L. Awesomatixusa.com | TQWire.com | Islandraceway.com |JacksonRCracing.com | Horsham RC | Sweepracingusa.com
MikeXray is offline   Reply With Quote
Old 03-14-2009, 01:24 PM   #12
Tech Elite
 
Trips's Avatar
 
Join Date: Aug 2001
Location: 360 Speedway
Posts: 2,251
Trader Rating: 16 (100%+)
Default

You can buy servo speed reducers that go between the receiver and servo. A good hobby shop will have one or know where to get one.

I find the BEST way to slow down the servo is to move your hand slower on the steering wheel. Works with ANY radio and it'll make you a better driver.

OF course, if you STILL feel that 100$ digital servo is too fast, I'd be happy to trade you a $18 one that will be nice and slow...
__________________
MARSHAL!!
Trips is offline   Reply With Quote
Old 03-14-2009, 01:47 PM   #13
Tech Regular
 
CARD's Avatar
 
Join Date: Jan 2008
Location: Pearl of Oriental
Posts: 343
Trader Rating: 10 (100%+)
Default

A cheap lower end servo might be the best bet... Wonder if a slower normal analog servo can couple to Spektrum receiver?

__________________
Commander At Riot Desert
Complete Adult's Repairing Depot
Can Anyone Refuse Doggie-style
CARD is offline   Reply With Quote
Old 03-14-2009, 03:06 PM   #14
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,186
Default

Quote:
Originally Posted by JimmyMac View Post
I don't think slowing down response time will do it. The servo will still turn as fast as it does, it just slows down the response time from when you turn the wheel, to when the car turns.... Or more like.... there will be more of a delay. If you want that delay... just play with expo. But once again, you can not adjust servo speed.

What effect are you trying to get?
While they do different things the effect would be the same...a slow servo affects the car the same as a delay in response. Either way you have to start your turn a little bit sooner then with a fast servo or less delay.
InspGadgt is offline   Reply With Quote
Old 03-14-2009, 04:52 PM   #15
Tech Elite
 
JimmyMac's Avatar
 
Join Date: Oct 2001
Location: NC
Posts: 4,443
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by InspGadgt View Post
While they do different things the effect would be the same...a slow servo affects the car the same as a delay in response. Either way you have to start your turn a little bit sooner then with a fast servo or less delay.
Somewhat, but if you turn suddenly in the opposite direction, when the servo gets the signal, it will respond very fast in the opposite direction rather than slowly turning in the opposite direction. So, yes, there may be a "delayed" initial turning response, the servo will still have a weird "fast" steering effect on opposite lock. I guess it will feel like expo setting with slow initial turn with fast turn at max throw.
__________________
M.J. McIntyre

Yokomo YRX12
Tamiya TB03
JimmyMac is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Spektrum DX3R Discussion Thread MadRacer Radio and Electronics 2015 05-10-2017 01:45 PM
New XRAY 808 Philipm Nitro Off-Road 12372 12-08-2015 07:43 AM
Adam Drake talks about the new 8ight 2.0 Sylvain Nitro Off-Road 545 05-30-2010 06:57 PM
SPEKTRUM DX 2.0 & SR3000Rx Receiver 08 Worlds Farm 2 1 Run Wheels!! robbdny R/C Items: For Sale/Trade 23 11-14-2008 12:47 PM
Do I really need a 2.4 ghz radio to be competetive shadey10 Radio and Electronics 19 10-31-2008 11:06 AM
Spektrum DX3R Radical Freaks Nitro Off-Road 40 10-27-2007 08:06 AM



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 01:37 PM.


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