R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 09-21-2013, 07:58 PM   #1
Tech Elite
 
brothainchrist0's Avatar
 
Join Date: Apr 2010
Location: Nebraska
Posts: 3,041
Trader Rating: 145 (100%+)
Default Throttle return spring or rubber band??

Hey guys, I have had a couple of run aways on me at full throttle and have experienced some serious pucker factor that I never want to have again. So, what do u guys use? To me a spring wouldnt be strong enough to pull my Savox 1258 back to neutral but maybe i'm over estimating it's strength.

Thanks for any help!

Kyle
210-722-6891
__________________
2017 Xray RX8 - Ielasi Modified Engines/Matrix Tires/Savox Servos/Airtronics Radio

IGT Hobbies - The one stop shop for anything on-road and incredible customer service.
brothainchrist0 is offline   Reply With Quote
Old 09-21-2013, 10:26 PM   #2
Tech Champion
 
nitrodude's Avatar
 
Join Date: Aug 2002
Location: Oxnard, CA
Posts: 5,842
Trader Rating: 5 (100%+)
Default

Cut off the neck off of balloons and put it on the carb, that way its not pulling on the servo, but it closes the carb.
__________________
Steven Muller
AKA El Pibe RUFAST? HAHA!!!
Ronin Speed Parts
nitrodude is offline   Reply With Quote
Old 09-22-2013, 07:44 AM   #3
Tech Elite
 
brothainchrist0's Avatar
 
Join Date: Apr 2010
Location: Nebraska
Posts: 3,041
Trader Rating: 145 (100%+)
Default

I'm confused. If it's trying to close the carb, wouldnt it then be pulling on the servo? Can you get a pic of it? I guess I dont understand. Because that is another concern of mine. I dont want my servo to work harder too making it not last as long.

Thanks!
__________________
2017 Xray RX8 - Ielasi Modified Engines/Matrix Tires/Savox Servos/Airtronics Radio

IGT Hobbies - The one stop shop for anything on-road and incredible customer service.
brothainchrist0 is offline   Reply With Quote
Old 09-22-2013, 07:57 AM   #4
Tech Regular
 
Join Date: Jan 2009
Posts: 314
Trader Rating: 62 (100%+)
Default return spring/rubber bands

Quote:
Originally Posted by brothainchrist0 View Post
I'm confused. If it's trying to close the carb, wouldnt it then be pulling on the servo? Can you get a pic of it? I guess I dont understand. Because that is another concern of mine. I dont want my servo to work harder too making it not last as long.

Thanks!
I use return springs but the rubber band or top of the ballon work great to .Unless you have a reaaly cheap servo it really wont hurt it .Better that then a run away any day ,I have had my share.To make sure either way works to return your servo to idle just turn your radio off or unplug your battery in car and should go to idle.You may need to shorten the spring to get it were you need to be or tighten the rubber bands a bit.Way cheaper then changing parts .Hope this helps,I have never had a servo failure because of this.
martind1318 is offline   Reply With Quote
Old 09-22-2013, 10:28 AM   #5
Tech Elite
 
brothainchrist0's Avatar
 
Join Date: Apr 2010
Location: Nebraska
Posts: 3,041
Trader Rating: 145 (100%+)
Default

Quote:
Originally Posted by martind1318 View Post
I use return springs but the rubber band or top of the ballon work great to .Unless you have a reaaly cheap servo it really wont hurt it .Better that then a run away any day ,I have had my share.To make sure either way works to return your servo to idle just turn your radio off or unplug your battery in car and should go to idle.You may need to shorten the spring to get it were you need to be or tighten the rubber bands a bit.Way cheaper then changing parts .Hope this helps,I have never had a servo failure because of this.
ok great. thank you very much! I do run the Savox 1257 so I know it isnt a cheap servo. I'll have to make these safety improvements here soon than.

Thanks again!
kyle
__________________
2017 Xray RX8 - Ielasi Modified Engines/Matrix Tires/Savox Servos/Airtronics Radio

IGT Hobbies - The one stop shop for anything on-road and incredible customer service.
brothainchrist0 is offline   Reply With Quote
Old 09-22-2013, 11:58 AM   #6
Tech Champion
 
nitrodude's Avatar
 
Join Date: Aug 2002
Location: Oxnard, CA
Posts: 5,842
Trader Rating: 5 (100%+)
Default

The problem with running a return spring on the servo arm is that it will drain the batterie faster. If you put the balloon neck one car it bypasses the servo.
__________________
Steven Muller
AKA El Pibe RUFAST? HAHA!!!
Ronin Speed Parts
nitrodude is offline   Reply With Quote
Old 09-22-2013, 12:02 PM   #7
Tech Elite
 
brothainchrist0's Avatar
 
Join Date: Apr 2010
Location: Nebraska
Posts: 3,041
Trader Rating: 145 (100%+)
Default

Quote:
Originally Posted by nitrodude View Post
The problem with running a return spring on the servo arm is that it will drain the batterie faster. If you put the balloon neck one car it bypasses the servo.
I understand what you guys are saying and this would work, yes, if it is the throttle linkage coming part causing the run away but this last weekend I just had the battery come unplugged and that was what caused the loss of power which meant the carburetor was still hooked up to the servo and would require turning the servo too in order to get it to close without power. And we also had another guy have a run away due to his battery just dying. I dont want that either. I understand how the spring and balloon would work if the throttle linkage came unhooked but I dont know how well it will work if it's the battery issues I described. Anybody have a picture of their set up?

Thanks!
__________________
2017 Xray RX8 - Ielasi Modified Engines/Matrix Tires/Savox Servos/Airtronics Radio

IGT Hobbies - The one stop shop for anything on-road and incredible customer service.
brothainchrist0 is offline   Reply With Quote
Old 09-22-2013, 12:06 PM   #8
Tech Champion
 
nitrodude's Avatar
 
Join Date: Aug 2002
Location: Oxnard, CA
Posts: 5,842
Trader Rating: 5 (100%+)
Default

Quote:
Originally Posted by brothainchrist0 View Post
I understand what you guys are saying and this would work, yes, if it is the throttle linkage coming part causing the run away but this last weekend I just had the battery come unplugged and that was what caused the loss of power which meant the carburetor was still hooked up to the servo and would require turning the servo too in order to get it to close without power. And we also had another guy have a run away due to his battery just dying. I dont want that either. I understand how the spring and balloon would work if the throttle linkage came unhooked but I dont know how well it will work if it's the battery issues I described. Anybody have a picture of their set up?

Thanks!
Youre not understanding how to mount it on the card, the right way it works when there is no power, that's why you put it on the card. Ill take a pic of mime
__________________
Steven Muller
AKA El Pibe RUFAST? HAHA!!!
Ronin Speed Parts
nitrodude is offline   Reply With Quote
Old 09-22-2013, 12:08 PM   #9
Tech Elite
 
brothainchrist0's Avatar
 
Join Date: Apr 2010
Location: Nebraska
Posts: 3,041
Trader Rating: 145 (100%+)
Default

Excellent. I guess I am just confused. Thanks for all the help guys.
__________________
2017 Xray RX8 - Ielasi Modified Engines/Matrix Tires/Savox Servos/Airtronics Radio

IGT Hobbies - The one stop shop for anything on-road and incredible customer service.
brothainchrist0 is offline   Reply With Quote
Old 09-22-2013, 12:18 PM   #10
Tech Champion
 
nitrodude's Avatar
 
Join Date: Aug 2002
Location: Oxnard, CA
Posts: 5,842
Trader Rating: 5 (100%+)
Default

__________________
Steven Muller
AKA El Pibe RUFAST? HAHA!!!
Ronin Speed Parts
nitrodude is offline   Reply With Quote
Old 09-22-2013, 12:20 PM   #11
Tech Elite
 
brothainchrist0's Avatar
 
Join Date: Apr 2010
Location: Nebraska
Posts: 3,041
Trader Rating: 145 (100%+)
Default

Quote:
Originally Posted by nitrodude View Post
that picture isnt working. says cant find server
__________________
2017 Xray RX8 - Ielasi Modified Engines/Matrix Tires/Savox Servos/Airtronics Radio

IGT Hobbies - The one stop shop for anything on-road and incredible customer service.
brothainchrist0 is offline   Reply With Quote
Old 09-22-2013, 12:29 PM   #12
Tech Champion
 
nitrodude's Avatar
 
Join Date: Aug 2002
Location: Oxnard, CA
Posts: 5,842
Trader Rating: 5 (100%+)
Default

How about this one?
Attached Thumbnails
Throttle return spring or rubber band??-1234804_10200713459899395_2069694559_n.jpg  
__________________
Steven Muller
AKA El Pibe RUFAST? HAHA!!!
Ronin Speed Parts
nitrodude is offline   Reply With Quote
Old 09-22-2013, 12:31 PM   #13
Tech Elite
 
brothainchrist0's Avatar
 
Join Date: Apr 2010
Location: Nebraska
Posts: 3,041
Trader Rating: 145 (100%+)
Default

much better thank you. So the way you have it rigged up right there doesnt add any stress to the servo? and will also be strong enough to pull back the carb when the power dies even with the servo attached still?

I'm starting to think that giving up just a minimal amount of servo performance might be worth the assurance there there wont be a run away.

thanks again for the help!
__________________
2017 Xray RX8 - Ielasi Modified Engines/Matrix Tires/Savox Servos/Airtronics Radio

IGT Hobbies - The one stop shop for anything on-road and incredible customer service.
brothainchrist0 is offline   Reply With Quote
Old 09-22-2013, 12:37 PM   #14
Tech Champion
 
nitrodude's Avatar
 
Join Date: Aug 2002
Location: Oxnard, CA
Posts: 5,842
Trader Rating: 5 (100%+)
Default

This works, Ive had a couple problems with baterie plugs and it stoped the car
__________________
Steven Muller
AKA El Pibe RUFAST? HAHA!!!
Ronin Speed Parts
nitrodude is offline   Reply With Quote
Old 09-22-2013, 12:40 PM   #15
Tech Elite
 
brothainchrist0's Avatar
 
Join Date: Apr 2010
Location: Nebraska
Posts: 3,041
Trader Rating: 145 (100%+)
Default

ok perfect. this is how I will do it than. Thank you so much!
__________________
2017 Xray RX8 - Ielasi Modified Engines/Matrix Tires/Savox Servos/Airtronics Radio

IGT Hobbies - The one stop shop for anything on-road and incredible customer service.
brothainchrist0 is offline   Reply With Quote
Reply



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 09:50 PM.


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