I'll Let Oppo In On My Project :D

Kinja'd!!! "Brickman" (legomaniacman)
09/09/2019 at 21:51 • Filed to: Traxxas, Rally

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I wanted more speed for my Traxxas Slash, so I did my research and found that the Castle SCT is faster than Traxxas brushless system, so for just $100 I gave it ago. Plus you can program it on your PC, with castle link USB cable!

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But I didn’t stop there. I been wanting to turn it into a rally cross car, but no one makes the rally body for it anymore. The Traxxas Fiesta body is too expensive and this RC is RWD.

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Custom made bumper that I found on a blog (meatballracing)

I zip tied the shocks to make the front lower :P

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I found the one of the bodies that I wanted for my project! Slightly used, but still in great condition.

A proline body mount set, careful measuring, and drilling new mounting holes I got the body to fit perfect. I read that if I had the Slash 4x4 the body would fit with no mods, but the 2wd Slash is different.

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It is nothing but speed and burn outs! any slightest turn I spin out of control. Super fun, but I’ll put the stock gear set back and will give it another run to see how it does. It makes the brushed motor look pathetic.

I have a low CG chassis coming in and a mount for the ESC. The chassis will make the center of gravity of the car lower so it should handle better. Maybe some rally lights on the hood would look nice too!


DISCUSSION (17)


Kinja'd!!! Daily Drives a Dragon - One Last Lap > Brickman
09/09/2019 at 22:09

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Aw man a Castle in that is going to be rowdy. I recently put a fresh body on my 4x4 brushless. I chose a Tundra TRD pro and painted it Voodoo blue. 


Kinja'd!!! CRider > Brickman
09/09/2019 at 22:18

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My 2WD Slash Raptor has a similar Castle brushless sytem to yours, and it’ s barely controlable. You really need to be gentle on the throttle or it’ll go rocketing off in the wrong direction or spin out completely . Are you using lithium batteries or nicad?


Kinja'd!!! Gerry197 > Brickman
09/09/2019 at 22:41

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A big upgrade for you would be the rear tires, the stock tires are garbage, only good for testing or screwing around your back yard.

The biggest upgrade for any 2WD Slash is a set of good rear tires. Off road on on-road specific.

Stock tires on a stock brushed 2S Lipo Slash in the dirt is barely controllable. You get a good set of off-road tires, and you can run it on 3S Lipo and it will be perfectly controllable. You would run rings around a stock 4WD on stock tires.

I’ve been doing RC for a long time, brushless electric, 1/5th scale gas, RC planes, and 100 mph brushless boats.  If you have any questions, let me know.  


Kinja'd!!! Eric @ opposite-lock.com > Brickman
09/09/2019 at 22:45

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Does Castle still do sensorless motors/ESCs ? The only place those make sense is in helicopters.

Interesting project. Being an RC racer in the past (back when I had a track nearby), I’ve never understood the odd things bashers do with their cars. Racers are obsessed with handling, traction, tire compounds, throttle control , clutch adjustments, etc. They should land like a cat when dropped...

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Kinja'd!!! Brickman > CRider
09/09/2019 at 22:46

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2s lipo with 25c discharge rate. Being easy on the throttle helps, but slow. 


Kinja'd!!! Brickman > Eric @ opposite-lock.com
09/09/2019 at 22:49

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the motor is sensored, but the ESC isn’t. Why they sell it packaged like that IDK. having a sensored ESC is more for a rock crawler I think. 


Kinja'd!!! Brickman > Gerry197
09/09/2019 at 22:53

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I was thinking of some tires like this

https://www.amazon.com/Bandito-SC-Road-Tire-C2/dp/B00CFVUXSQ

Mostly plan on driving on the driveway and dirt... until the grass grows back. 


Kinja'd!!! Eric @ opposite-lock.com > Brickman
09/09/2019 at 23:00

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You’ll have way more control with an ESC that supports a position sensor. It’ll help with traction.

I believe the Traxxas shocks have a clip thing for spacing springs. Do you still have those in there? The zip ties will make your handling that much worse than it already is (because Slash). A set of lighter weight springs would also lower it. Maybe a higher shock mount point, which will also lower it, but those are already leaning over hard.

If you were around here, I’d help you at least try to get the most you could out of what you have. Adjusting your camber, toe, and damping would probably help with that whole spinning out of control problem...


Kinja'd!!! Eric @ opposite-lock.com > Brickman
09/09/2019 at 23:15

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SC tires are always garbage for handling/traction due to their crappy design . It’s their nature.

Pro-Line, JConcepts, and AKA all make very high quality tires. I’ve used Panther, too, for certain applications. Foams vary, but the first three all make quality foam inserts.

You really can’t go too wrong with any of these that match your application (tire pattern and compound) : https://www.prolineracing.com/short-course-desert-truck-tires/


Kinja'd!!! Gerry197 > Brickman
09/10/2019 at 00:11

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As mentioned by Eric, those suck. Get Proline, JConcepts and AKA are all better.

I highly recommend JConcepts Choppers. They are amazing in sand and most dirt conditions, your Slash will have 4x4 like traction with these. They are about $27 a set, but already come mounted and glued. However, do not use them on the street or they will wear out fast.

If you want a dual use tire, that works well in the dirt and street, Proline Trenches work well too. Almost as good as the Choppers in the dirt, but much more durable on the street, they are pricier at about $35. s

Choppers (these are fronts, which means longer width on the rear, should still clear your rear fenders): https://www.amainhobbies.com/jconcepts-choppers-premounted-sc-tires-hazard-2-slash-front-blue-jco3067-3134/p390625?v=238507&gclid=CjwKCAjw8NfrBRA7EiwAfiVJpcaTpl4UB5lPLHnm8BBtcZPY19IDsaAZNep7xgbeIeIZMUSzR_PyOhoCo4IQAvD_BwE

Trenchers: https://www.amazon.com/Proline-115913-Trencher-Mounted-Renegade/dp/B004Z4LBSW

BTW - Your body reminded me of my Rally Slash, I really loved that truck, I had all 3 bodies but the white one you have was my favorite ...

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Kinja'd!!! Gerry197 > Eric @ opposite-lock.com
09/10/2019 at 01:45

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For an outdoor b asher , you really don’t need a sens ored system . The majority of all hobby grade RTR vehicles are sensorless.

For my indoor clay race stuff, yes sensored is ideal.


Kinja'd!!! Brickman > Eric @ opposite-lock.com
09/10/2019 at 09:59

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I have a medium size one on the front and big spacer on the rear shocks. Not much in the way of adjusting the shock position on the slash.

I plan on getting some smaller shocks for the front and softer ones for the rear. Trying to find front shocks that dont have as much travel. 


Kinja'd!!! CONTINENTLDRIFT02-They call me Don > Brickman
09/10/2019 at 11:56

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It seems like the tires are a problem and if it’s 2wd, I would get a gyro. Here’s a cheap chinese controller with a built in gyro if yours doesn’t have TSM

Link: https://us.banggood.com/index.php?com=point&t=clickReportPage

Not sure if the dimensions are correct but this would be a cool body to have on it.

Link:  https://www.amazon.com/dp/B01LXOIN3K/?coliid=I3I3O44YFZ4CS8&colid=IYP72T5R7U6A&psc=1&ref_=lv_ov_lig_dp_it


Kinja'd!!! Brickman > Gerry197
09/10/2019 at 14:24

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Nice! Im looking at mostly street tires. I have a long driveway now that I can drive fast on.

Might see about a set of the Traxxas rally wheels. Prolines street tires are a little bit taller than the stock ones, which might be a problem with the fenders on the rally body.


Kinja'd!!! Gerry197 > Brickman
09/10/2019 at 15:41

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I don’t recommend that, Traxxas OEM tires are CRAP! You will get better performance for less with anyone else. You can see in my pic I have a couple of sets of them, so trust me when I say they aren’t worth it.

You can always adjust the body post for better fit around the chassis, as well as trim the wheel wells or a combination of both if you get slightly larger tires. 

For the suspension, you don’t want to adjust that based on how the body fits. Ideally you want to adjust the ride height with the shock collars so the rear drive shafts and front a-arms are about level. This makes a good base height to start at.

Makes sure to do this with the battery installed. Push the car down a few times and let it settle, then adjust the suspension height.


Kinja'd!!! Brickman > Gerry197
09/10/2019 at 16:08

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The problem im having with the front shocks is the way the slash 2wd is made. The suspension travels almost a 45 degree angle, the 4x4 doesn’t. for the wheels to fit right the shocks have to be compressed halfway.

I’ll be doing some more tinkering once I get the low CG chassis in.

I was looking at these Jconcepts G-loc tires. Looks grippy and affordable.

https://www.amainhobbies.com/jconcepts-glocs-short-course-tires-2-yellow-jco3074-00/p390674?v=274748&gclid=CjwKCAjwk93rBRBLEiwAcMapUQ8BNyGsv4io6fwFvWw6WoxBkgdsJEZHkUHGWyYIjQU2XDNBogWj9RoCq8YQAvD_BwE


Kinja'd!!! Gerry197 > Brickman
09/10/2019 at 16:29

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Looks like you have wrong springs on, they look like progressive rear springs. Make sure you have front springs for Slash Ultra shocks.

However, if you buy the Low Center Gravity Kit, it will include the revised front springs, which are also linear, so you will take care of that issue with the LCG kit.

Those are probably good street tires, if you stay on the tarmac most of the time . However, if you plan on any off-roading, dual type tires tend to suck off-road. I recommend those tires I noted earlier and just use your stock ones on the street. They will at least last a long time.

If you plan on pure street, then I would recommend looking at their all-street tires. Rally type (dual use) tires just don’t work well enough to be worth it.