🚲 I Suck At Welding! Custom E-bike 9.0 Frame Mods - Fabrication - Enduro - DIY Build! \ QS273 70Ah

Part 2 of a NEW e-bike build - terrible welding ensues! Can I actually make something that works!?

Ok so this is my 2nd ebike that I put away for a few years because I used some of the parts to make my 3rd ebike which you guys can check out here:    • 🚲 Custom 5000W Digi-Camo E-Bike [54MPH!] -...  

I crafted a plan to cradle this giant a$$ battery, and for that we're going to need to do some metal fab. I've been wanting to get more into metal fabrication for a while now and when's a better time?

I'll show you my initial thoughts and designs that I mapped out in 3D using Blender. I went through quite a few iterations before settling on a design, I could have spent more time but I was pretty happy with how things were looking, now I just had to build it in real life.

I went with 1/2" square tubing to build basically a "skeletonized" truss/frame to take place of that sheet metal I had to remove. This should be more than robust, but if it's not then I'll add more reinforcements.

I went to work with the angle grinder and cut all of the pieces I needed. I had quite a few angles to deal with and I did my best to make the fit up as close as possible, but doing things freehand I knew it wasn't going to be exact.

After that I dive into welding, oh man was this difficult - I knew it would be but it was about as hard as I imagined, maybe a bit more. I don't know anything about welding so you're seeing basically someone who just learned yesterday try to build something, it's a bit of a train wreck but I was able to get to a point where the frame held itself together, so that's something. It's definitely something.

Can I actually weld up the whole thing and add all the parts I need? You'll have to stay tuned for part 3 to the answers for that!
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⛧ \\ Table of Contents: \\ ⛧

00:00 - Intro
01:04 - Design Ideas [3D]
02:50 - Cutting Steel
07:15 - Weld Preparation
08:02 - I SUCK AT WELDING [Issues]
15:24 - Results [...So Far] \ Outro

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\\ Hex Camo E-bike V9.0 - QS273 \\

This has been a long time in the making, I've been wanting to remake this build for about 3 years now and it was always my plan to replace the older smaller battery with one that could do the motor justice.

1. The Frame
This is an older frame from China that was very cheap - it's burly, heavy and should hold up to the power that I'm putting through it. The swingarm on this one is super beefy compared to the EEB version, but the trade off is that it is a lot heavier.

2. The Battery
Custom made GTK pack, 70Ah, 72V, 200A BMS. It has two 150A Anderson plugs with 2 8G wires per pole!

3. The Controller
Not shown yet, but it's a Sabvoton SVMC72200 200A controller, it's fully programmable with regen braking.

4. The Motor
It's a QS273 V3 - T3 motor from QS. Rater for 8000W but you can push these much higher as they are huge and heavy and can handle a ton of power, a lot more than the QS205s but there is a weight penalty.

⛧ \\ Full write-up with pics is on the main site: https://hightech-lowlife.github.io/pr...

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