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Losi LMT Steering Servo Help

Losi LMT Steering Servo Help

Old 09-07-2023, 05:35 AM
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Default Losi LMT Steering Servo Help

Hi guys,

I've just installed this new power hd servo into my lmt. I powered it on and let it position itself before installing the horn. The steering trim on my stock transmitter is centred and I've installed the horn so the wheels are as close to centre as I could get it.

When turning the truck on after it steers much further to the right than the left.

It seems it needs some programming and power hd offer a programming device for about $65aud. I have no problem getting this but I am curious can I purchase a higher quality transmitter that I can use to adjust the servo? If that is the case I would rather do that.

I am quite new to modifying trucks.

Thanks Griff
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Old 09-07-2023, 05:43 AM
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EDIT: Before reading the rest of my post, understand that steering trim does not need to be centered, you can adjust it as needed to line the wheels up before worrying about steering travel. So turn the truck on with steering trim centered and horn removed, install horn as close to wheels straight as you can, then re-adjust steering trim on the radio to make the wheels perfectly straight. If the steering travel is still uneven, read below.



Griff, the geometry of the stock linkages is set for the stock servo and servo saver. The length of the small steering link will need to be adjusted to get even steering in both directions when using different servo horns or servos with slightly different output shaft positions.

Here is my solution: I've made an adjustable steering link. This will allow fine tuning of the steering geometry when using different servo arms to allow equal epa L/R. It's made from a short mugen m4 turnbuckle p/n a2808 and some traxxas rod ends (any rod ends of similar dimensions should work). Once installed, you can shorten/lengthen the short link and recenter the servo until the throw is exactly equal left/right when the EPA is set to the same value in both directions. You can also loosen the servo slightly and shift it in the direction it needs to go to correct the throw.


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Old 09-09-2023, 12:58 AM
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Thanks for the reply Buckland, good information to note.

I've got a treal servo saver coming so I should be able to retain the stock steering link.
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Old 09-09-2023, 08:05 PM
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Originally Posted by GRIFF_
Thanks for the reply Buckland, good information to note.

I've got a treal servo saver coming so I should be able to retain the stock steering link.
I've since put a Treal saver on mine and still recommend the adjustable link. Does the stock radio have adjustable EPA in both directions? Even if it's not perfectly equal it should be perfectly usable if you can set them both to lock without straining your servo.
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Old 11-14-2023, 11:41 PM
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Default Losi LMT steering

Originally Posted by GRIFF_
Hi guys,

I've just installed this new power hd servo into my lmt. I powered it on and let it position itself before installing the horn. The steering trim on my stock transmitter is centred and I've installed the horn so the wheels are as close to centre as I could get it.

When turning the truck on after it steers much further to the right than the left.

It seems it needs some programming and power hd offer a programming device for about $65aud. I have no problem getting this but I am curious can I purchase a higher quality transmitter that I can use to adjust the servo? If that is the case I would rather do that.

I am quite new to modifying trucks.

Thanks Griff
I can be of help. But Iím busy today. Tell me when. Text me when you are ready
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Old 11-15-2023, 08:31 AM
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Originally Posted by GRIFF_
Hi guys,

I've just installed this new power hd servo into my lmt. I powered it on and let it position itself before installing the horn. The steering trim on my stock transmitter is centred and I've installed the horn so the wheels are as close to centre as I could get it.

When turning the truck on after it steers much further to the right than the left.

It seems it needs some programming and power hd offer a programming device for about $65aud. I have no problem getting this but I am curious can I purchase a higher quality transmitter that I can use to adjust the servo? If that is the case I would rather do that.

I am quite new to modifying trucks.

Thanks Griff
You don't need the programmer for you needs. Just buy a better radio with EPA setting $50 and you problem will be fixed.

Last edited by 1995 Monster T; 11-15-2023 at 09:27 AM.
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Old 11-15-2023, 09:14 AM
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I used this for many years before upgrading to the their RC8x for bashing and the Futaba 10px for racing (both are way more than I need but radios last a long time).

The build quality on this radio is so-so but the price is right, receivers are cheap, YT vids are plentiful to help you learn, and it has everything you are likely to need:

https://www.amazon.com/Radiolink-Cha...80161504&psc=1
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