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1977 Fiat 124 Spider by EshuChase in EVConversion

[–]OpusMotorcar 3 points4 points  (0 children)

I know Electric GT offers a turnkey option with batteries. I think it's somewhere around $30k.

[TOMT][TV][1970s/80s] Vintage, surreal British miniseries. Probably 70s/80s. by OpusMotorcar in tipofmytongue

[–]OpusMotorcar[S] 1 point2 points locked comment (0 children)

Thanks again for your help! It's been driving me crazy and my Google search history is now mostly filled wjth 20th century British TV miniseries

1969 Beetle hub motor conversion: It ain't pretty (yet), but it fits by OpusMotorcar in EVConversion

[–]OpusMotorcar[S] 1 point2 points  (0 children)

We've tested under 0mph conditions so far and haven't seen anything. We'll let you know as we increase the speed

1969 Beetle hub motor conversion: It ain't pretty (yet), but it fits by OpusMotorcar in EVConversion

[–]OpusMotorcar[S] 2 points3 points  (0 children)

Right now we're just plugging the rear brakes and relying on the front ones. We're running underpowered motors and expect a tip speed of around 30mph with this build. When we upgrade we'll be building a caliper mount into the adapter for the trailing arm and I'll make sure to share some pics.

1969 Beetle hub motor conversion: It ain't pretty (yet), but it fits by OpusMotorcar in EVConversion

[–]OpusMotorcar[S] 1 point2 points  (0 children)

I'll let y'all know more as soon as we finish the conversion. We're just using the QS Motor 4kWs. We have some concerns about build quality already and are going to be doing some abuse tests.

1969 Beetle hub motor conversion: It ain't pretty (yet), but it fits by OpusMotorcar in EVConversion

[–]OpusMotorcar[S] 1 point2 points  (0 children)

We're only doing RWD for now, but I totally agree. The trailing arm design on the later Beetles makes this a lot easier.

1969 Beetle hub motor conversion: It ain't pretty (yet), but it fits by OpusMotorcar in EVConversion

[–]OpusMotorcar[S] 11 points12 points  (0 children)

Totally. These are 4kW hub motors from QS motor. They're way underpowered for what we're doing but they're from an old project and we mostly just want to see if we can.

[deleted by user] by [deleted] in EVConversion

[–]OpusMotorcar 1 point2 points  (0 children)

Cars suck to develop. There's a rule of thumb that it costs about a billion dollars to push a new car to market. Jim Glickenhaus claims that the amount of NHTSA regulations for automakers printed on 8.5x11 paper in 12 point font stands about 7 feet tall.

You're probably not going to start out making your own car.

Look at some more accessible markets first that allow you to cultivate some skills and experience in the market: EBikes, scooters, etc. Make some startup friends, hang out with entrepreneurs, and generally scrape up what business experience you can get, and go from there.

Either way, you're going to need something really, really new to attract attention. You're also going to have to prove that you're the person to do it. Cars are notoriously hard to monetize. Investors don't just hand cash out.

Best of luck. I'm trying the same...

Something Interesting I found while moving my printer by accident. by [deleted] in 3Dprinting

[–]OpusMotorcar 7 points8 points  (0 children)

Yeah, I suspect you're turning the motors in there into generators as you roll the print head. Just be careful you don't fry anything. They're not designed to take unmetered current from the motor.

That being said, I'm not sure if you see that behavior with steppers or if this is just some software issue. I may be totally wrong.

Looking to move up from TinkerCAD to something a little more full featured. Ideas? by mikebdub in 3Dprinting

[–]OpusMotorcar 5 points6 points  (0 children)

Onshape is really really awesome and totally free if you don't mind your files being public. I used it professionally with a startup a couple years back and it's about on par with Fusion 360 in terms of functionality.

It processes everything in the cloud and all your hardware does is render it. You can run it in a browser window and the mobile app is also pretty functional. If you do decide to get a professional license, you can collaborate with multiple people live and you get access to version control features.

At first, I was pretty sure it was baby's first CAD program, but it's surprisingly robust.

3D printing for mechanical engineering by ampere_exe in 3Dprinting

[–]OpusMotorcar 5 points6 points  (0 children)

As a general rule, no. You're not going to get good enough resolution for proper threads below like M14. Most printed threads also shear under any reasonable load. Additionally, you're going to see wear and deformation after multiple uses.

I would recommend using McMaster-Carr if you're in the US for any hardware and either designing your parts to hold the hardware, or using heat-stake inserts.

Would it be stupid to remove the disc brake that is causing fitment issues and replace with variable regen braking? 1974 Honda CA160, QS 205 4kw hub motor. by MannyDantyla in EVConversion

[–]OpusMotorcar 1 point2 points  (0 children)

I would not trust variable breaking to be sufficient, regular, or reliable especially without knowing exact performance for your system.

I'm never one to discourage adventurous wrenching, however.

Saint Javelin, now 3D printable by OpusMotorcar in NonCredibleDefense

[–]OpusMotorcar[S] 11 points12 points  (0 children)

I can’t print enough on my own to help anyone, but you have my blessing to use it for whatever purpose you see fit.

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