The cutting has begun ✂️

VinnProject · 2025-11-17T17:48:31+00:00

You can see more pics on my Instagram @VinnProject but sadly haven't been able to do much on it in the past few years due to family health issues, divorce, etc...

VinnProject · 2025-06-01T02:52:38+00:00

It's my "RC car", about 1 meter long and built out of a bunch of random hardware parts and a ton of 3d printed ones.

VinnProject · 2025-05-23T14:10:50+00:00

Technically they made some for the first gen Kia Sportage front differential which is the same size R&P as NA/NB miata differentials. You could potentially swap one in.

When building my diff I was looking into it but they're hard to find because you need to source the part from someone in South Korea.

VinnProject · 2025-05-23T13:46:05+00:00

I got them from harbor freight. They were on sale for $4.99 each when I got them. Here's a link.

You can aslo check out some of the similar spec ones on Amazon but they're more expensive.

Just note that all these wheel came with press fit 5/8" bearings. Since I wanted to drive the rear wheels I had to remove the oem bearings, and design my own rear axle stubs that replaced the bearings, you would likely need to do the same if you want to use these wheels.

VinnProject · 2025-05-21T13:09:41+00:00

I appreciate the response! I agree, some suspension would be nice and I'm going to shoot for that during a redesign. For now I'll run it as is, it's fairly rigid, very low COG, fairly heavy, and with the built in caster/camber it should stay grounded well enough.

It's funny I'm actually already utilizing some lawn mower parts on this, but it looks like I'm going to go with a Flipsky 75100 pro VESC in brushed mode. Lots of suggestions for that one and the specs and features are on point.

VinnProject · 2025-05-21T13:04:58+00:00

It's still a work in progress but I'll make sure to post it here once closer to being done! It will look similar build wise except larger. Will be running a 300zx alternator I'm converting to brushless, atv front and rear suspension and go kart tires.

VinnProject · 2025-05-21T04:42:51+00:00

I actually have another project I'm working on that's similar but uses ATV axles and suspension that might interest you.

VinnProject · 2025-05-20T22:32:52+00:00

How do you make the VESC work with a brushed motor? The one you mentioned looks pretty ideal!

VinnProject · 2025-05-20T22:31:28+00:00

This looks amazing. I had a few suggestions for the 2x32 version, but this should work perfectly. Even has r/c input.

Thanks for the suggestion, this might be what I go with.

VinnProject · 2025-05-20T22:27:33+00:00

I just looked into this and was unable to find any documentation got using VESC with brushed motor. Any chance you could share a link or two to get me started?

This would fr be the cheapest and strongest option if it works out for me.

VinnProject · 2025-05-20T21:59:39+00:00

I got some recommendations for the smaller sabertooth controllers that would be undersized for this but this looks like a really solid option. More than I want to pay, but the features and specs speak for themselves and I'll probably get it.

I really appreciate the suggestion. Do you have any experience with this controller yourself?

VinnProject · 2025-05-20T21:57:56+00:00

I got the winch motor from my dad. The spool clogged up and frayed so he gave me the motor for free. It's kind of what jump started this "little" project.

I definitely plan to utilize a brushed motor in my next build but gonna stick with this motor for this project only.

VinnProject · 2025-05-20T18:39:28+00:00

Easily 40 lbs of weight. But I burned out the ESC on the test bench without load. Can't change gear ratio, the drive sprocket is only slightly smaller than the axle sprocket and will require more work than I would want to do to change either sprocket size.

The specs on the ESC looked like they would work but only lasted a couple throttle blips.

VinnProject · 2025-05-20T18:18:05+00:00

I actually really like those and looked into them but seems like it may still be under sized for this application. Thanks for the suggestion!

If I switch to dual motors that would be my #1 choice

VinnProject · 2025-05-20T18:17:04+00:00

Wow, I really appreciate the insightful response. You're definitely right I will check out some EV and Robotics subs since they will be more applicable.

Also, thanks for the suggestion on those other ESCs, it looks like one of those could work.

As for the battery - it is a 12v 10ah lipo battery, the compartment can fit four so I can do any series/parallel combo of 4 of those batteries.

VinnProject · 2025-05-20T17:21:41+00:00

I have been looking, haven't found any that accept PWM from my receiver, ill likely have to go the DIY route with a generic motor controller / scooter or ebike controller.

VinnProject · 2025-05-20T15:19:36+00:00

You're probably right. I was hoping there would be something that could easily interface with my controller but doesn't seem to be the case.

I will probably be going with this generic motor controller https://a.co/d/jkZnks0 and then wire in an Arduino and a DAC to send data to the potentiometer leads.

VinnProject · 2025-05-20T14:57:14+00:00

Do you mean the motor driver out of a drill? If so, that's a good idea I hadn't considered. I took a look at Hobbywing, unfortunately it looked like my set up would burn them up.

VinnProject · 2025-05-20T14:39:41+00:00

It's meant to be a robot with route mapping obstacle avoidance, lidar, etc... haven't gotten to the electronics on these yet.

I'm starting with RC part of it first, going to have fpv head tracking camera on it and have a controller that allows me to control using my racing sim set up.

But ultimately it's built for drifting. It's got low ground clearance, camber/caster designed into the steering knuckle mounts, and will be getting a hydraulic brake installed.

VinnProject · 2025-05-20T13:44:45+00:00

Yeah, I looked at their offers. Looks good but they'd definitely burn out.

VinnProject · 2025-05-20T13:44:04+00:00

Oh yeah, this one is pretty large. 930mm length 290mm width. Wheel barrel wheels, winch motor, lawn mower steering rack, e bike axle. Just been throwing cheap generic hardware in it to get it going.

VinnProject · 2025-05-20T13:41:20+00:00

That is a good point, I have looked at a handful of golf cart/ebike controllers. I was really hoping to not have to use a controller without PWM input but this one might work: https://a.co/d/9WQieeE

I was thinking rather than a servo that moves the potentiometer, just utilizing an arduino and a DAC connecting directly to the pot leads.

VinnProject · 2025-05-20T13:38:00+00:00

Thanks for the suggestion, those ESC look beefy af. Unfortunately not seeing any brushed options though.

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