How To Build a Cheap DIY eBike

Chinese Carbon Frame, Dengfu E10
Bafang M510 Motor
840Wh Battery

Geometry:
Size: XL
Head Angle: 64.5 Degrees
Reach: 510mm
Chain Stay 459mm
BB Height: 356mm

Could use offset bushings to reduce the BB height and make it slacker if needed!

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[RobRidesEMTB]

This new M510 motor is really strong! Looking forward to sharing the next video! ps - this is a new frame, not the same one I did before. DENGFU revised the frame slightly (new charging port location and new battery cover that is quick release. Looks similar as they painted it THE EXACT same colours from my last video! Also, motor is the 2022 Bafang M510).

[TheBrokenMountainBiker]

In this day and age of £12k+ bikes I find builds like this really refreshing. Especially as this is a much more affordable price range for me and makes the prospect of owning an E-MTB more likely! I'm looking forward to seeing your video of it being ridden.

[TomTheSurgen]

Loved the CHEEB. So glad you went for V2. This has to be one of your most popular videos. I only wish you had full parts list and an extended build video so an idiot like me can build by numbers 😂

[BramBiesiekierski]

Nice.

You don't even need a headset bearing press. If you freeze the bearing cups. And use a gentle amount of heat from a heat gun or hair dryer on the frame. Then the differing thermal expansion rates let the bearing cups slip right into the frame.

I did it exactly like that on my dengfu e22 (basically an e10 with a bigger motor).

[getlostrobyn]

Kudos to you Rob for showing us the Dengfu / Bafang combo again. You could have stuck with the major brands and milked it. Well done mate. Super keen for the next video.

[currentsupply]

Best Part About this Bike is the quality choice of real mountain bike parts and components. Not only that but you smartly choose high quality parts at good prices. Most pre-built Bafang Powered bikes out there are running a junk spec on drivetrain, brakes, wheels and tires. Well Done, I would love to see follow up reviewing this motor vs. other Bafang Motors like the BBSHD, Bafang Ultra, etc.

[whitest_kyle]

I've got a Dengfu E22/Bafang M620 build from a company here in the US, love seeing more of this stuff!

[stffee]

great video nothing more satisfying than building your own bike.cant wait for the ride review

[PseudonymAliase]

I bought both my motorcycles for $3500 each and they will just last so much longer, better, faster, etc. that was back in 2006 when i realized there was no comparison, even till this day. but I love this video and how far technology has come!

[umtrainer-]

Just wanted to let you know that you inspired me to do my own build like this. Unfortunately dangfu didn’t have a xl frame other wise it would be a totally similar build. I was able to find another company and just finished. Thanks for the inspiration. By the way I named it CDIY.

[arnauddechamps]

I got one E-ten with the M600 and Formula Selva C for the front, I tell you it is a beast. Amazing bike, compare to what others brands do and price wise...clearly Dengfu is a pearl you need to think of when you move to e-mtb.

[MrMuftwub]

Im tempted to build one after seeing this… well done on the super build !!

[uvolniavka]

Helpful video - figured I need to build my own commuter e-bike to get what I want - a decent but not necessarily very powerful mid-drive motor, large battery, Rohlhoff E14 belt-driven hub, large enough ring to cog ratio to be able to reach 30 mph at maintainable cadence.

...and all this should be in a full suspension frame with 29" wheels and hydraulic brakes...

[veganmatters]

Everything but bare cables where the slap against the hollow frameset would drive me bonkers ! 👊🏻👍💪

[Yourfriendwasmagnificent]

I've had mine since Rob did his original Cheeb build.
I love it. With 150mm fr & rr and the more powerful M600 motor, it's a beast that I highly recommend 🤙

[davescott]

This is great! But, come on Rob. Where's the test ride vid? I'm really interested to see what you think of the M510.

[leno]

Really like this vid. Fired me up to build my own E-Bike.
Thanks Rob.

[Magoo]

Good job showing an alternative way to get a eBike. Not so fast on the most powerful have one of the original Bafang motors that outputs 160Nm of Torque. My battery is 52 volt 1100Ah....all put in an Luna Cycle Apollo...I love the bike for all it can do.

[omahamtb]

This seems like the perfect solution for me! I would only need the frame, electronics and suspension. I could just take the rest from my polygon T7 and complete the bike! Easily under $3k, maybe even $2500 if I find good deals on the suspension!

[JCozzyphotos]

i built my Alloy version and now am building the M600 version in carbon. Carbon components where i can as well. Wheels are carbon, bars are carbon and so on. I have the Bafang motor controller programming kit and will update the amperage output as well. they run 18amp but the controller can safely go to 25amp. i will run 22amp and although i have the standard battery (840 watt) i will also build a custom battery as i did with my other bike. I have access through my work with a company in Japan to Sodium ion battery cells and aluminium graphine batteries. Using a conbination of both cells in one battery unit (requires 2 chargers sadly), i get over 1000 watts and the delivery is so good, that after 759 cycles on my current bike the battery still reports 99.97%. The drain I suspect is not the battery, but the degradation of the wiring between cells. Therefore my next battery with run a silicon wire we use in satellites. With my bikes i dissasemble the motors and seal the controller board with Urethane conformal sealant, and the joiners all have electrical greas on them. We also shrink seal any joins. the battery compartment is sealed as well and the bike has no issues if submerged. I am so excited with my carbon version.