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ET48 2.0 New Build Component Questions

jwess1234

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After much consternation and debate, I ended up ordering an ET48 2.0 (after struggling with the ET410, Xray X8Te, EB48), the community in this forum definitely tipped me towards Tekno--thanks, everyone! After pouring through threads, I narrowed some component choices down, but I was hoping for some particular advice on the ESC, Motor decision and whether I should really "future proof" myself for 4s.

My tenative build options are in the table below, but here are a couple of questions:
  1. Which ESC / Motor combo would you go for?
    • Use case is healthy, but cut grass, not likely racing (I haven't found any off-road racing in the San Francisco Area). Not doing jumps and bashing, but I don't want to overheat. The grass could be wet when I run, but I won't intentionally be doing anything in the water.
    • I've heard Tekin makes a good motor, but not ESC. I also ready HW bearings wear out in motors and that Castles can be a bit long for the chassis.
  2. Is it worth making the ESC / Motor 6s capable for my application.
    • Lighter is better, but if 6s is important LMK.
  3. Am I overshooting/spending on anything, e.g., servo?
  4. What do you suggest for wheel/tires.
    • Being nimble in the grass is a plus, I would prefer something lighter as I'm not trying to land jumps or use rotational mass to flip.
  5. Anything critical you would add to "my cart?" for the process.
    • I'll grab a couple of the recommended build tools by Tekno and my wife has a soldering iron.
Thanks for any opinions and suggestions! Jack

 
Truggy motors typically use larger 4274 cans, I would go with a waterproof design like this:

https://www.hobbywingdirect.com/pro...4902131&pr_seq=uniform&variant=40028016738419

Note that HobbyWing lists the can as 4278 where I believe they needed to make it a little longer to handle the waterproofing.
Does the 4278 motor fit the ET48 without relocating the ESC?

I would stick with the non-sensored, yet powerful Corally branded HW combo.

The ESC:
https://jennysrc.com/products/team-...-54011-xp-c-00177?_pos=3&_sid=8ac59ef5e&_ss=r

The 4074 motor:
https://jennysrc.com/collections/co...or-brushless-2050kv-c-54055-kuron-825-c-00172

If you want a longer motor (will require ESC relocation):
https://www.rcjuice.com/motor-esc/b...s-motor-temperature-protection-1-8-truck.html

IF you want a ridiculously long (and strong) can (will require ESC relocation too):
https://www.rcjuice.com/motor-esc/b...s-motor-temperature-protection-1-8-truck.html

Can't beat that value, especially if you're only bashing.
 
Final build! HW g2 Plus, Xerun 4074.

Total weight 8.8 lbs with Backflip LPs and no battery.

Backflip LP mounted on DE racing rims weigh in at 255 grams. I might give the Katar T tires a try to drop some weight.

So far 3s in the grass with a crappy old battery the run was pretty good, but will try a quality 4s battery tomorrow.

I’m very impressed with handling so far.

IMG_3803.jpeg


IMG_3801.jpeg


IMG_3777.jpeg


IMG_3778.jpeg
 
IMG_3951.jpeg


RC herding > sheep herding?

Final build. Paint not great up close… not going to try airbrushing again.

I also wonder what I could have done to make the tires more balanced when glueing as I’m seeing a bit of imbalance.
 
View attachment 9784

RC herding > sheep herding?

Final build. Paint not great up close… not going to try airbrushing again.

I also wonder what I could have done to make the tires more balanced when glueing as I’m seeing a bit of imbalance.
If you want to balance them as you glue them the only thing you can do is try to find the heavy spot of the wheel, foam, and tire individually then mount them up with the heavy spots across from each other. You would also have to glue the inserts to the wheel so they don't rotate inside the tire. That's a lot of work though. Easier to just add balancing clay to the completed tire/wheel when you're all done.
 

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