Hey everyone, I have a Losi XXX-NT and I love it and it's amazing and generally works great, but just now, I have realised a slight problem with it. When I open up the throttle, doesn't even have to be full throttle, any amount, it sometimes stays at that throttle even when I release the trigger. I have to just brake a bit to get it to go back again. Does anyone know how I can solve this issue? Thanks a lot, peace.
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Carb issue that needs addressing.
- Thread starter Losi-HPI
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Sounds like a dirty throttle barrel....remove the carb and dissassemble and clean it. May have dirt which turns to grime inside it holding it in place. Also make sure your throttle return spring is doing its job. You may have overstretched it and it may not be pulling back on it.
Hope that helps
Saggy
Hope that helps
Saggy
- Thread starter
- #3
I would first like to start by saying thank you for your help, I greatly appreciate it and with that aside, I'll start. If I were to remove and disassemble the carb would it need re-adjusting after? Also, what are the chances of something going wrong by taking it apart and having to then buy a new one? (I don't have money these days.) Peace.
To start of with ...in order to make sure you keep the same settings just simply take a screwdriver and turn the screws in and count the rotations...for example....the low speed needle will be somewhere around 2 1/2 turns from closed....this means that the screw will turn that many times (approx) before it stops or closes the circuit. Be sure to stop when the needle starts to tighten. write the settings down. LSN=2 1/2 turns from closed HSN=3 1/4 turn from closed for example. If it doesn't run properly after reassembly then set back to factory settings and read the manual to see how to adjust. In nitro you will eventually have to learn to set the carb. no better time than the present. But when you put it back together set the needles back to what you found and it should put you back on track as far as needles go. As for tearing it apart just take your time and notice how each piece fits together. Like all small things be careful not to force thinks apart or overtighten when reassembling. Other than that you should be OK. While inside the carb look for broken o-rings on the needles and where the carb slides into the block. I use denatured alcohol to clean mine. I find carb cleaners lessen the life of these rubber components. You should have gotten a manual with the kit or engine itself which has a parts explosion to help ya out. I am assuming you have the RTR XXXNT with the Mach .15.
here is the parts explosion
http://www.dynamiterc.com/ProdInfo/Files/dyn0880-explosion.pdf
and here is the manual
http://www.dynamiterc.com/ProdInfo/Files/dyn0880-manual.pdf
hope that helps and good luck
Saggy
here is the parts explosion
http://www.dynamiterc.com/ProdInfo/Files/dyn0880-explosion.pdf
and here is the manual
http://www.dynamiterc.com/ProdInfo/Files/dyn0880-manual.pdf
hope that helps and good luck
Saggy
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I would first try removeing the engine without taking the linkage apart....just remove engine pipe, then engine mount screws....flip the engine around and the arm should be able to be removed from the lever without moving the linkage....leave the lever on the throttle body loose enuff to be able to move it after you have reversed the procedure....when you have everything installed then turn your radio and truck on to ensure the servo is in the right place....which should be at idle...make sure the throttle body is in the idle position....use some needlenose pliers and snug the nut....thats how i do it when at a race to save time but....
You may choose to tighten the lever down before reinstalling ....which is the correct way....to make sure it doesn't come loose.....I set mine so its of equal distance from idle (look at the carb opening) to perpendicular with the chassis (about half of total movement) as it is from perpendicular to full throttle. I hope i explained that right....lol...this will ensure linear movement...Next is to zero the throttle trim on your radio then attach the arm with the collars slightly loose.... install the linkage to the lever and attach it to the servo horn. push the arm to close the carb opening and tighten the collar on the end so when you give throttle it will pull the lever...next slide the other collar up to the spring and make sure it is barely up against the spring and tighten.....work your trigger and see if works correctly....
If this doesn't help then refer to
http://www.teamlosi.com/RTRNT_pics/Radio11.jpg
you may have to enlarge this to read but its how the manual words what I tried to say
for more on linear movement look here
http://home.tiscali.nl/john.vugts/Setup/SetupElements/LinkageSetup.htm
yes its from an airplane but the principle still applies
hope that gets ya going
Saggy
You may choose to tighten the lever down before reinstalling ....which is the correct way....to make sure it doesn't come loose.....I set mine so its of equal distance from idle (look at the carb opening) to perpendicular with the chassis (about half of total movement) as it is from perpendicular to full throttle. I hope i explained that right....lol...this will ensure linear movement...Next is to zero the throttle trim on your radio then attach the arm with the collars slightly loose.... install the linkage to the lever and attach it to the servo horn. push the arm to close the carb opening and tighten the collar on the end so when you give throttle it will pull the lever...next slide the other collar up to the spring and make sure it is barely up against the spring and tighten.....work your trigger and see if works correctly....
If this doesn't help then refer to
http://www.teamlosi.com/RTRNT_pics/Radio11.jpg
you may have to enlarge this to read but its how the manual words what I tried to say
for more on linear movement look here
http://home.tiscali.nl/john.vugts/Setup/SetupElements/LinkageSetup.htm
yes its from an airplane but the principle still applies
hope that gets ya going
Saggy
Screw it, I'll just get a new engine for my birthday and get my LHS to install it correctly.
Now that's just lazy! :sleeping:
If your going to get a new one anyway, you might as well try it with the old one. Since your going to have to reset your linkages on a new engine anyway.
If your going to get a new one anyway, you might as well try it with the old one. Since your going to have to reset your linkages on a new engine anyway.
I read what you wrote, still lazy!
Dude I don't care. Some things we can do on our own, some things we can't. For personal preferance, I will never take mine to the LHS to have work done on it. Hell, I can't even get the mechanic there to give me the right part!
Dude I don't care. Some things we can do on our own, some things we can't. For personal preferance, I will never take mine to the LHS to have work done on it. Hell, I can't even get the mechanic there to give me the right part!
- Thread starter
- #12
Mine has a throttle return spring and it's still tight, not unwound or anything, and as far as the LHS goes, I have taken my car to have work done on it before and they did a good job, I trust they'll do a good job again.
Hypedonrc
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I can't believe you have the lhs work on your stuff!:wedgie:
Why dont you try it yourself?
Take the servo horn off, turn on your radio, and see if it is the carb sticking, or the electronics messing up.
If it's the carb
-replace/repair.
If it is the radio:
-try swaping servos to see if the other one does the same thing(if there isn't anything obvious like the servo coming unplugged, or low reciever batteries.) If the other one works-bad servo. If it doesn't-keep eliminating the original servo is probably "ok"
-fail safe could also be malfunctioning
-Transmitter/Reciever could be bad
Who knows? But the worse that can happen is you can't figure it out, and you put it back together and ask for help. So far it hasn't cost anything but a little time.:whip:
Why dont you try it yourself?
Take the servo horn off, turn on your radio, and see if it is the carb sticking, or the electronics messing up.
If it's the carb
-replace/repair.
If it is the radio:
-try swaping servos to see if the other one does the same thing(if there isn't anything obvious like the servo coming unplugged, or low reciever batteries.) If the other one works-bad servo. If it doesn't-keep eliminating the original servo is probably "ok"
-fail safe could also be malfunctioning
-Transmitter/Reciever could be bad
Who knows? But the worse that can happen is you can't figure it out, and you put it back together and ask for help. So far it hasn't cost anything but a little time.:whip:
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- Thread starter
- #14
Why would I WANT to do work on my own stuff in a hobby such as this, this is the kind of hobby where things are NOT cheap, and I know that I am no stranger to "messing" up, so I wouldn't want to take that kind of a chance in a hobby such as this, might as well let someone do it who knows what they're doing WAY more then I do. You don't know me or my kind of luck, but obviously I do, and I know that with my luck, disaster would only come of even a simply task.
But you know what just nevermind, to everyone. I've made my decision already and have gotten my "help" so it's done. This is just turning into a series of useless questioning and some-what form of arguing.
But you know what just nevermind, to everyone. I've made my decision already and have gotten my "help" so it's done. This is just turning into a series of useless questioning and some-what form of arguing.
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