R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 11-03-2010, 06:20 PM   #1
Tech Addict
 
Join Date: Mar 2010
Posts: 614
Trader Rating: 8 (100%+)
Default Throttle servo has a wear spot Losi 8ight t 2.0

My throttle servo gets a wear spot on the engine side of the servo about a quarter of the way up and towards the back of the servo(right where the aluminum case starts). Any idea what this is from? It rubs on nothing right there. Only thing i can think of is maybe debris from the flywheel or spur gets flung onto the servo. Anyone else seen this on the losi? Any fix?

Also, it seems like no matter how I setup my throttle linkage the carb will eventually bind. I have everything setup to a T per the losi instructions and this passed weekend the carb would bind and not close all the way without me tapping the brakes so i was running on in the corners. I have the linkage straight as i can get and the ball is setup such that the wire is level. Not sure what else to do except buy the quick change center diff mount but if i have to do that i'm going to buy a different brand car. Its getting ridiculous. Its a Werks B5 BTW. I plan on trying a bigger rubber band. I run a torque servo and the band i'm running isn't quite strong enough to pull the servo back at loss of power. Maybe that'll work.
__________________
Losi 8ight T 2.0 - Mugen Ninja
Mugen Eco - Tekin 1900KV RX8
Byrons 30%
Spektrum
Proline/J Concepts/AKA
bacchus is offline   Reply With Quote
Old 11-03-2010, 07:01 PM   #2
Tech Fanatic
 
J.Sears's Avatar
 
Join Date: Dec 2009
Location: Versailles KY
Posts: 837
Trader Rating: 9 (100%+)
Default

Quote:
Originally Posted by bacchus View Post
My throttle servo gets a wear spot on the engine side of the servo about a quarter of the way up and towards the back of the servo(right where the aluminum case starts). Any idea what this is from? It rubs on nothing right there. Only thing i can think of is maybe debris from the flywheel or spur gets flung onto the servo. Anyone else seen this on the losi? Any fix?

Also, it seems like no matter how I setup my throttle linkage the carb will eventually bind. I have everything setup to a T per the losi instructions and this passed weekend the carb would bind and not close all the way without me tapping the brakes so i was running on in the corners. I have the linkage straight as i can get and the ball is setup such that the wire is level. Not sure what else to do except buy the quick change center diff mount but if i have to do that i'm going to buy a different brand car. Its getting ridiculous. Its a Werks B5 BTW. I plan on trying a bigger rubber band. I run a torque servo and the band i'm running isn't quite strong enough to pull the servo back at loss of power. Maybe that'll work.
it may be the slide on the carb sticking. not your servo
J.Sears is offline   Reply With Quote
Old 11-03-2010, 07:09 PM   #3
Tech Addict
 
Join Date: Mar 2010
Posts: 614
Trader Rating: 8 (100%+)
Default

Quote:
Originally Posted by J.Sears View Post
it may be the slide on the carb sticking. not your servo
It is the slide sticking.
__________________
Losi 8ight T 2.0 - Mugen Ninja
Mugen Eco - Tekin 1900KV RX8
Byrons 30%
Spektrum
Proline/J Concepts/AKA
bacchus is offline   Reply With Quote
Old 11-03-2010, 07:38 PM   #4
Tech Fanatic
 
l3asher's Avatar
 
Join Date: Dec 2008
Location: Broussard, Louisiana
Posts: 956
Trader Rating: 2 (100%+)
Default

Bacchus, will you be in Watson this weekend? If so get Jason or one of the losi guys help you out. Was you there last weekend?
l3asher is offline   Reply With Quote
Old 11-03-2010, 07:54 PM   #5
Tech Addict
 
Join Date: Mar 2010
Posts: 614
Trader Rating: 8 (100%+)
Default

Yeah i was there. Track is tough! I looked at Jason's linkage and it isn't setup like losi recommends. I wanted to try it but didn't have the time to reconfigure everything.
__________________
Losi 8ight T 2.0 - Mugen Ninja
Mugen Eco - Tekin 1900KV RX8
Byrons 30%
Spektrum
Proline/J Concepts/AKA
bacchus is offline   Reply With Quote
Old 11-03-2010, 08:49 PM   #6
Tech Addict
 
jwcobra03's Avatar
 
Join Date: Jul 2008
Posts: 566
Trader Rating: 69 (100%+)
Default

If you come out saturday i'll take a look at it. I remember Mitch had a problem with the B5 carb sticking on his buggy, i doubt it's the engine just probably a linkage issue. Maybe try like you said another rubberband or use a throttle return spring that's what i use. Track was tough but i liked it
__________________
Kyosho TKI3/BCE/ XZB Speed
Kyosho TKI3-E/Tekin 1900
Kyosho RB6/Orion R10 Pro-VST 7.5
Kyosho ZX6/Orion R10 Pro-VST 6.5
jwcobra03 is offline   Reply With Quote
Old 11-04-2010, 08:59 AM   #7
Tech Addict
 
Join Date: Mar 2010
Posts: 614
Trader Rating: 8 (100%+)
Default

Quote:
Originally Posted by jwcobra03 View Post
If you come out saturday i'll take a look at it. I remember Mitch had a problem with the B5 carb sticking on his buggy, i doubt it's the engine just probably a linkage issue. Maybe try like you said another rubberband or use a throttle return spring that's what i use. Track was tough but i liked it
Yeah Mitch warned me before i bought the B5. I took the idle stop and slide out and it looks perfect. The carb is butter smooth. I'll figure it out. It was running me on in the corners bad on Saturday. I think that had alot to do with me being discouraged with the track. I know i'm better than that. Maybe not a lot but better. I can't race for a few weeks so i have plenty of time to wrench. Thanks for the help.
__________________
Losi 8ight T 2.0 - Mugen Ninja
Mugen Eco - Tekin 1900KV RX8
Byrons 30%
Spektrum
Proline/J Concepts/AKA
bacchus is offline   Reply With Quote
Old 11-04-2010, 10:19 AM   #8
Tech Fanatic
 
jwm2's Avatar
 
Join Date: May 2010
Location: Grand Rapids, MI
Posts: 823
Trader Rating: 5 (100%+)
Default

You may need to turn the throttle linkage(the ring that goes over the lsn) counterclockwise alittle more. I have my linkage so its level with the servo arm or slightly above. I had binding issues before doing this but since correcting it, i don't have those issues anymore. I also had an issue of the coupler under the servo arm rubbing on the top of the servo case which certainly didn't help matters at all.
__________________
8ight 2.0 - Go Engine 7 port | VP-Pro | Avid | Ace/XP 1015 & Hitec 5625MG
8ight-T 2.0 - Go Engine 3 port | VP-Pro | Avid | Ace/XP 1015 & 1313
Extreme-Mods.com - Xbox 360 & PS3 Mods, Parts, and Accessories
WillowBayNaturals.com - Handmade soap, lotions and body products made by my wife. Her lotions and soaps are flat out amazing. Give them a try, you won't be disappointed.
jwm2 is offline   Reply With Quote
Old 11-04-2010, 11:25 AM   #9
Tech Regular
 
BAUSTIN's Avatar
 
Join Date: Jul 2008
Location: WV
Posts: 356
Trader Rating: 2 (100%+)
Default

I had the same issue with the collar on the linkage hitting the top of my servo......i did get the linkage as flat and straight as i could nearly perfect but it was still really close. I dremeled a little flat on the collar opposite the set screw and haven't had a problem since..........
__________________
Billy Austin
www.Code3RC.com
Elevation Sports
BAUSTIN is offline   Reply With Quote
Old 11-04-2010, 01:01 PM   #10
Tech Addict
 
Join Date: Mar 2010
Posts: 614
Trader Rating: 8 (100%+)
Default

Quote:
Originally Posted by BAUSTIN View Post
I had the same issue with the collar on the linkage hitting the top of my servo......i did get the linkage as flat and straight as i could nearly perfect but it was still really close. I dremeled a little flat on the collar opposite the set screw and haven't had a problem since..........
Good idea. Thanks.
__________________
Losi 8ight T 2.0 - Mugen Ninja
Mugen Eco - Tekin 1900KV RX8
Byrons 30%
Spektrum
Proline/J Concepts/AKA
bacchus 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 10:21 PM.


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