R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 04-10-2009, 03:56 AM   #1
Tech Rookie
 
Join Date: Apr 2009
Posts: 5
Default full throttle start

Whenever i seem to switch on my Scumacher Rascal it opens full throttle and i don't dare to start it incase it just flies off...
I can't even lower the throttle with the remote either.
I have been told that this could be a servo problem? (i don't have a clue lol)
Does anyone know where i'm going wrong?
Demonata is offline   Reply With Quote
Old 04-10-2009, 04:34 AM   #2
Tech Adept
 
Join Date: Feb 2008
Posts: 180
Default

Take of the air filter and look into the carb, and check if its open, it should only be open 1-2mm.

Also check it with radio gear on.
adz06 is offline   Reply With Quote
Old 04-10-2009, 05:24 AM   #3
Tech Adept
 
n10cities's Avatar
 
Join Date: Oct 2006
Location: Fort Smith, AR
Posts: 149
Default Check servo reversing settings....

Make sure that your throttle servo is not reversed on the transmitter. Turn on the transmitter and then the receiver without starting the engine. Check the throttle servo motion with your throttle trigger. If the servo is closing the throttle when you are squeezing the trigger, then the servo is reversed. There is usually a small switch somewhere on the transmitter that you can change.

If it is moving in the proper direction, your trim settings may have been knocked out of whack...either by something that was laying on top of the transmitter in your pit box or maybe your finger accidentally hit it while picking it up sometime....
__________________
Your arrogance blinds you.....

Losi - Spektrum - Byron's Fuel - Airtronics
Robbie
GSHobby.com

Last edited by n10cities; 04-10-2009 at 12:53 PM.
n10cities is offline   Reply With Quote
Old 04-10-2009, 08:29 AM   #4
Tech Adept
 
Hitman Racing 1's Avatar
 
Join Date: Feb 2009
Location: Burleson Tx
Posts: 219
Default

You have a fail safe that is set up wrong?
__________________
Sponsors: Wife & Daughter!
Hitman Racing 1 is offline   Reply With Quote
Old 04-11-2009, 01:26 AM   #5
Tech Rookie
 
Join Date: Apr 2009
Posts: 5
Default

The transmitter doesn't lower the throttle by any significant amount...
And yes it is doing it in the correct direction...
So the only probable solution would be the trim settings... well i can easily check them thanks
Demonata is offline   Reply With Quote
Old 04-11-2009, 07:04 AM   #6
Tech Master
 
Join Date: Jan 2006
Location: Virginia
Posts: 1,807
Trader Rating: 47 (100%+)
Default

Take the servo horn off of the servo, turn your radio on
and dial all your trims to zero. Then turn the switch on
your cars receiver ON. Re-install the servo horn on to
the servo in the proper position.
rageworks is offline   Reply With Quote
Old 04-11-2009, 08:54 AM   #7
Tech Regular
 
slumlord's Avatar
 
Join Date: Jun 2008
Location: Peoria, AZ
Posts: 455
Trader Rating: 10 (100%+)
Default

Put a rubber band on your servo linkage, it's the best fail safe you can have.
__________________
Jay Stuart #66
slumlord is offline   Reply With Quote
Old 04-11-2009, 02:15 PM   #8
Tech Rookie
 
Join Date: Apr 2009
Posts: 5
Default

It turns out that the servo thingy (the bit with te screw) was in the wrong place
It's fixed now ^^
Demonata is offline   Reply With Quote
Old 04-11-2009, 04:22 PM   #9
Tech Apprentice
 
J4c03's Avatar
 
Join Date: Apr 2009
Location: Aberdeen, WA
Posts: 53
Send a message via MSN to J4c03
Default

you might also want to check the servo horn and output on the servo to make shure it isnt stripped out.
__________________
Losi 8T 2.0 brushless
Associated sc10rs
Axial scx10 Honcho
Markham Mafia
J4c03 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
EPMTs check in here. (a subsidiary of TNT) overtki11 Singapore R/C Racers 55470 05-07-2017 11:57 PM
Xray T1 David Galdo Electric On-Road 12705 07-04-2016 01:07 AM
1/10th pan car Taz_S Oval, Larger Scales and More 16138 09-25-2014 09:03 AM
Team Associated Mini Truck!! jaysimpson Electric Off-Road 279 04-14-2006 01:46 PM
2005 Florida Winternats Jpilone Nitro On-Road 353 02-17-2005 01:08 PM
After reving, High idle....Whats wrong? Rapid Roy Onroad Nitro Engine Zone 7 12-21-2004 12:03 PM
Help on tuning engines Supercharged Nitro On-Road 12 11-09-2004 08:52 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 10:56 AM.


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