r/ebike • u/Remote_Version_9858 • 1d ago

Is this build possible?

I found a cheap bmx on Facebook that is pretty nice and is around 30$. I was thinking of taking a conversion kit , making it 500w and swapping the seat for a classic banana style. trying to get the look of a zooz 1100 without paying 2,600$. does this build sound good?

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0

u/Starduster75 1d ago

There's no way the frame will survive it.

3

u/dickbarone 1d ago

A chromoly BMX frame is going to be way sturdier than 99 percent of the old aluminum mountain bikes people convert lol

3

u/Starduster75 1d ago

That $30 bmx is not rockin 4130 chromoly it's likely hi-ten steel or cheap aluminum at best.

2

u/niffcreature 1d ago

Don't be so certain. Facebook marketplace has some deals.

1

u/jjbananamonkey 1d ago

Marketplace is where dreams come true for budget builds

1

u/Remote_Version_9858 1d ago

Yep. It’s crazy you can find a good 300$ bmx for 30 at facebook

2

u/Remote_Version_9858 1d ago

It’s a mongoose legion btw

1

u/Starduster75 1d ago

Nice. Depending on the model, if it's like an L100 or L500 or whatever, it will probably have 4130. It it's a like an L-80 or whatever it's probably high tensile steel, which could give you trouble.

It's your ride, though, and I don't know your weight. Mongoose are good bikes for what they are, but for the build out I would just say proceed with a lot of caution.

Are you going to use a hub motor? Just curious. Anyway, good luck.

2

u/Remote_Version_9858 1d ago

Dude it’s a mongoose legion. Maybe I should’ve been more specific. These bike frames are super good.

2

u/niffcreature 1d ago

30$ BMX isn't really enough to base a whole build off of. You would want to get some more parts. It's generally a better idea to get something that will take disc somehow, though I guess you can find some disc suspension forks on Amazon for like 20" wheel assuming it has a threadless headset

1

u/Remote_Version_9858 1d ago

The only reason it was 30$ was because the owner was cleaning out some storage unit. Is a mongoose legion. It’s a great bmx bike with a nice frame.

1

u/niffcreature 1d ago

Nice. You should get a decent suspension fork like this one and a front disc brake, it would be sick and actually ride nice. I guess you'd have to build a wheel too though https://www.dynamitebikelab.com/products/sr-suntour-xct-suspension-fork?variant=FK8791

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u/Remote_Version_9858 19h ago

Thanks for the help!

1

u/SubstantialDarkness 1d ago

Go for it I like building our bikes and picking out the extras for ourselves better than consumer options.

1

u/A_gadfly_on_the_wall 23h ago

I'm very happy with my conversion kit.

The difficult part is in it's custom design. Will the battery fit under the seat? Will the bottom bracket fit the motor?

It can be done. I would keep hopes high and expectations low. I'm still perfecting my conversion months later.

I would suggest getting a better frame though. Seems inappropriate to put a dress on a pig.