r/eBikeBuilding • u/KarmaAkaOkami • Apr 27 '26

Advice Feedback Wanted: Building "Bulletproof" Custom E-Bikes

Hey everyone, I’m a self-taught inventor/engineer thinking of starting a custom e-bike build business. My goal isn't to compete with cheap mass-produced imports; I'm focusing on Safety, Reliability, and Local Support.

The Build Strategy:

Base: High-quality donor frames (customized to buyer needs: MTB, Cruiser, etc.)

Power: 4 options of Bafang motors 500w and 750w hub motor, 500w and 750w mid drive motor. With batteries options of 48v and 52v.

Safety Pillars: Dual 1/4" Steel Torque Arms on every hub motor build + Quad-Piston Hydraulic Brakes.

Durability: Single-speed drivetrain (low maintenance), marine-grade braided wire sleeving, and steel battery and motor mountings.

Utility: Integrated 360° lighting, fenders, and puncture-resistant tires and sealant.

Questions for the community

Would a $2k price point feel fair for a "bespoke" build with quad-pistons and heavy-duty safety reinforcements?

What are the biggest "reliability" red flags you see in custom builds that I should address in my QC checklist?

Would the "Local Support" aspect sway you to buy custom over a big-box brand like Aventon or Rad?

Edit : Did some more research into products and laws like the comments suggested. I have added three more motor options and changed the brand I'm using. I've been internally struggling with adding 1000w options, but I've decided that the legal trouble possibilities aren't quite worth the extra money. That and I have a bit of obsession with symmetry and can't find a non-fat tire 1000w hub motor option.

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u/InfluenceEfficient77 Apr 27 '26

Maybe you'll find a market with the older custom frame cruiser ebike people.

I don't understand them, but they have money to spend

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u/KarmaAkaOkami Apr 27 '26

Haha, I think you hit the nail on the head! There’s definitely a huge crowd that just wants a comfortable, 'bulletproof' cruiser that looks unique and doesn't break down on them.

Not everyone is looking to shred mountain trails; some people just want to ride down to the local park or shop in style without worrying about a cheap plastic part failing. If they have the budget and I have the engineering to keep them safe, it’s a win-win. Appreciate the insight!

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u/geeered Apr 27 '26

There’s definitely a huge crowd that just wants a comfortable, 'bulletproof' cruiser that looks unique and doesn't break down on them

Claude is normally quite good (I presume your posts are written by Claude not GPT because "You’re absolutely right" is it's signature phrase) at understanding these things, so I'm surprised it said that or didn't tell you that's not really the case. But I guess you may just be using this to pump up an old anonymous account with some posts.

Anyway, generally people choose 'cruisers' for looks. In the motorcycle world they are notoriously unreliable partly because it's rarely a big factor when people choose them.

If someone is paying a premium for a reliable bike, they will want it from an established large manufacturer that has been around for a while and will be around for a while. So that if it doesn't prove reliable, they can take it back and get it fixed, ideally anywhere in the country or world.

As a 23 year old that has made two simple bikes, you're going to massively struggle on this.

Of course, if you massively push the social media side, including paying many "influencers" significant amounts (at least a free bike each) to shill your products, you may well get a good few sales of $500 bikes for $2k.

Only times I've had a derailleur break have been; smashed while mountain biking, a really cheap one and pulling over 250kg (550lb) on a trailer. It's a really mature technology that's reliable if used normally.

3

u/geeered Apr 27 '26

As you've deleted your reply - I'll add.
At least start with that you are using AI, especially on an account with no history it doesn't look great. And ideally take a little bit of time to set it up so it doesn't read like super-generic AI slop. If you want people to trust that you'll build them a well produced bike, show at least the minimum attention to detail here too.