ESC in High Lift question

[Saito2]

Over a decade ago I got a couple of Novak XRS ESCs because they were cheap at the time and ran motors down to 15T. I have one these in a TRF201 running a 17T Trinity motor and its a dog. The same motor ran great in my Thundershot with an MSC. Researching the matter here, I came across that the Novak XRS has a 15T limit BUT gets away with it because of a built-in current limiting of 40-45 amps. So that's why my 201 runs lazy.

Now, I have the other XRS in my High Lift which runs a Tamiya Torque Tuned motor. In 3rd gear, the truck can barely keep rolling. You have to run up through the gears to get rolling (understandable) and then hope you're going downhill in 3rd otherwise, you better downshift at the slightest provocation of an incline or obstacle. So...would running a Tamiya tble-02s, 101BK or 104BK rated at 25T but at a full 60 amps actually work better in the High Lift than the current-choked Novak XRS? Thanks for any insight.

[JatoTheRipper]

This doesn't really answer your direct question, but the best "budget" scale crawling brushed ESC on the market right now is the HobbyWing WP 1080.  It's $40 USD and comes with a programming card.  I bet that ESC would work great in the High Lift.

[Backlash]

I don't think that any of the Tamiya ESC are current limited, so in an ideal world,  they should deliver whatever current to the motor that it requires... If you try and draw more current through the ESC than it is designed for (by running a lower turn motor, over gearing or excess load) then the result should be that the ESC will get hot, and go into thermal shutdown.. The worst case scenario is that you could overheat the ESC and destroy it..

I would suggest buying some HobbyWing Quicrun 1060 ESCs (or the one Jato suggested for your F350) and not worry about it as both the motors you are using are within the limits of the ESC..

[MadInventor]

Can't suggest a ESC specific to the High lift as I use an old ripmax unlimited in mine, but my high lift will pull off effortlessly in 3rd with the stock silver can, as did the first one that I owned. Can you take off the body and Jerry rig another ESC or an msc to test that it's not a mechanical fault with the truck or a duff motor  ? Are the cells you're using ok (Are you using LiPo or Nimh / NiCads) ?

[Saito2]

I'm using descent Nimh packs. I'm running 2.2 tires which doesn't help matters but have dropped down on the pinion to compensate. The reason I suggested the non-current limited 60 amp Tamiya ESCs was because I have them lying around. I got the idea in my head after witnessing what the 40 amp current limited Novak XRS did to choke performance of the Trinity motor in my TRF201 despite being rated down to 15T. I thought, maybe the High Lift was experiencing something similar, only not because of motor turn limit but because of motor load in top gear with the relatively heavy High Lift.

[TurnipJF]

I don't have any experience with the chassis or ESC you mention, but from an electronics perspective your theory is sound. Best way to confirm is to try it and see!

[Saito2]

Ok, cool. I guess that's what I wanted to know, if I was headed in the right direction, theory-wise. If it seems to work, then I'll give one of those Hobbywing ESCs a try. I didn't want to simply throw money at it until I was more sure. I'm cheap.

[Juls1]

Sounds like the Novak might actually be worn out or faulty. 

I doubt you’ll be disappointed with a hobbywing. Since it is a crawler spend the extra on the 1080.

Juls

[Matt888]

This is the one I use in my Tundra with a standard can and it is brilliant.  Well worth the money, cones with a programme box as well.

https://hobbyking.com/en_us/quicrun-wp-crawler-brushed-1.html

[edeneen]

have you tried new brushes and having the comutator trued? 

[Saito2]

No, the Tamiya Torque Tuned motor is a sealed can motor (non-serviceable) like a standard 540 silvercan.