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aftershock to brushless help

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Old 02-14-2015, 04:46 AM
  #1
badbowtie
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Default aftershock to brushless help

I have a aftershock that I have had for years and would like to convert to brushless. I am running the lst2 trans since years ago so I could have reverse. I have read bad points about the losi kit and will fab some of my own things if need be. Looking for the best budget parts to look for to piece this all together. Not sure what size motor or esc and battery. I was in to all this about 15 years ago real big but brushless we didn't have back then.
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Old 02-15-2015, 06:03 PM
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There's really nothing in the Losi kit you need to convert your truck if you're willing and able to fabricate some things. You could actually convert your truck for far less if you can fabricate a few parts. Seriously everything in the Losi kit is useless especially the transmission gears.

Motor mount. I used some aluminum angle that's 4mm thick to make my mount. I've also seen an EMaxx motor plate cut in half and bolted to the chassis rails using the spur gear cover holes. There are cheap options here either way.

Battery trays for 1/8 buggies are pretty cheap and can easily be mounted up front. I had a couple different ones on my LST's but recently made my own as I wanted my conversion to be completely custom. I used some 1/8 Lexan I got at Home Depot, cut it out with my dremel then heated it up to bend it. I simply drew a line at the bend, used a lighter to heat it at the line (both sides) and bent it when hot enough. Hold the bend in position until it cools and viola, bent Lexan with no loss of strength. I used the extra Lexan to make an esc shelf and a shelf to mount my waterproof Traxxas receiver box up front.

The single speed conversion can be cheap too but in this case cheap can equal permanent or costing $ to reverse. Either way you disassemble the 2spd and put first gear off to the side. You can drill screws through the 2nd gear hub into the 2nd gear clutch to lock them together. The good news is you can remove the screws, the bad is the clutch shoes may fall apart or not be as effective when you remove the screws. The cheap permanent single speed is taking everything apart until your left with just the 2nd gear hub and the 2spd cam the hub rides on. Put tape over the holes around the 2nd gear hub and fully seat it on the cam. Now mix up some JB Weld epoxy and fill the 2nd gear hub (where the 2nd gear clutch shoes were) with the epoxy. When cured it will be a single speed. Of course you could spend some $ here on a single speed concersion so it could be reversed in the future. But new 2spd's on ebayncost about as much as a single speed conversion so you can always reverse it that way.

Esc, 150amp, period. The LST/Aftershock is a heavy truck, 120amp may survive if geared low enough but you're taking a chance. I'd stay away from the Hobbyking esc's but Hobbywing is good, Xerun, Castle, Tekin, etc.

Motor, something 4 pole, 1800-2200kv, at least 40mm diameter and at least 74mm long. I personally wouldn't go Tirnigy like those in the other thread and would pick Castle, Tekin, Hobbywing or Leopard. For 4s I'd stay 2000-2200kv, for higher voltage batteries use a lower kv.

Battery, at least 4s, at least 30c and no less than 4500mah. I'm running 30c 5000mah Turnigy at the moment and have been happy with them. They aren't in danger of failing, they can take it but I know I'd get better performance from a higher c pack. There's lots of manufacturers and opinions about lipos, I like and would buy again from Gens Ace, Turnigy, Polyquest and Hyperion.
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Old 02-15-2015, 06:33 PM
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My Lexan battery tray. Not sure why I drilled holes in it but it looks kinda cool though and makes it seem lighter. Still plenty strong enough too.


My aluminum angle "L" motor mount and modified spur gear cover. Had to modify the cover since the motor is higher up off the chassis. It didn't come out the greatest but some plastics don't shape that well when heated. Still kinda proud I was able to make it work though and the truck looks better with it than without in my opinion.


And the shelfs for the reciever box and esc. Without the esc shelf there's not much room for an esc behind the motor on a LST/Aftershock chassis, the XXL has room for it though. The nice thing about the Lexan is it can be threaded, sort of. I drilled a hole in the Lexan, then heated a screw and used it as a tap. When cooled the Lexan is threaded and both my reciever box and my esc are held down that way.
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Old 04-14-2015, 06:18 AM
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The very Best Brushless system for your Losi requires you to buy one of my Carbon fiber Chassis plates and install a Traxxas Summit Transmission! Requires a 3 channel radio and receiver!

This now has only 4 bolts to pull the true 2 speed transmission. The lipo trays are extra to the kit. This System also reduces the weight of the truck!

Last edited by twissted; 04-14-2015 at 06:27 AM.
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Old 04-14-2015, 06:28 AM
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https://www.youtube.com/watch?v=vE2HRnh0UtY&ab_channel=twissted
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Old 04-18-2015, 03:59 PM
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The very best huh? I'll show you the best, eventually. I'm only playin, you're conversion is really cool and I'm jealous of the CF. One of these days I'd like to cut my own CF chassis for my XXL, mount a center diff down low on a CF skid plate and cut out a few other CF pieces like a battery box, and top plates with integrated Rx box and esc mounts to get rid of my Lexan pieces. I like to keep my rigs light and it should also look pretty cool being all black plastic and CF. Rc is on the back burner to more important home owner type projects for the moment though.

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Old 04-22-2015, 06:41 AM
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I ordered the motor mount assembly with slipper clutch and the right output shaft. I should have it running when these parts come in.
Today I also installed the green springs to the shocks. It made a nice improvement to the looks, they are a taller spring than stock so it covers the entire shock body.


! should have it running by the end of this week (fingers crossed)!
Oh ya I have it sold already so I will do a video of it when it running and then it's gone!

Last edited by twissted; 04-22-2015 at 06:44 AM.
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Old 04-22-2015, 09:42 PM
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Because this is a rock buggy I wanted everything to be plastic so that it doesn't get hung up in the rocks I also am going with only 1 lipo to run this buggy to keep the weight down and also to get the bottom a lot cleaner so that it doesn't hang up also.
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