Author Archives: skadamo

My Kid Riding My eBike

My son keeps riding my bbshd bike. He is doing well on it and loves it. I'm thinking of building a bbs02 version on a bike that fits him. Anyone else have their kids on an ebike?

Step 2 Of An eMTB Crash Is Critical

Crashing is never fun but it is going to happen. Step 0 is to crash, step 1 is to do a mental and physical check of your body before you move and step 2 Is to turn off your bike. If you don’t do srep 2 you are bound to grab a handful of throttle and bad will likely get worse.

36 Tooth Lekkie Bling Ring Chain Derail Happened And…

I was just riding along, through deep brush, pretty fast when my chain derailed and got stuck between the bbshd and my 36 tooth Lekkie bling ring. It looked bad. Very bad. Like game over for my bling. Long story short I loosened all 6 or 5 bolts, took out the chain, tightened then back up and all is well. The bling ring is perfectly straight as far as I can tell. Chain fine too. That’s one tough bling ring!

BBSHD Crank Arm Failure?


I was just riding along, through a field, at 25+ mph and G’d out good on a dip in the field. The crank threads did not deal with that well! 😀

These are the crank arms that come with the bbshd kit from Luna Cycle and I assume most bbshd ebike kits.

Maybe I did not have pedals tight enough? Not sure. When I backed out the pedal most of the crank arm threads came with it so the crank failed, not the pedal.

Anyway, watch out for this. Time for stronger crank arms. To bad because I like the flat profile of them. The crank sticks out enoug with the 100mm bb I have.

My bbshd is mounted on a hardtail DB Hook. May not have failed if I had a full suspension and lost 20lbs. I probably pushing 215 lbs with gear.

BBSHD Hill Climb vs. Pedal Only

My brother and I did some riding today and took video of climbing with bbshd pas, bbshd throttle only and pedal only.

I borrowed my brothers Specialized Fatboy for the pedal only test.

BBSHD Throttle Only

BBSHD PAS

Pedal Only

Great Experiences With Luna Cycle

Luna Cycles Home Page

Luna Cycles Home Page

I wanted to let folks know I have had a great experience purchasing my bbshd from Luna Cycle. I bought my bbshd kit from the with my own money so this is not a biased post.

emtb parts at luna cycles

eMTB parts on Luna Cycles.

First off, comments like this honestly sold the bbshd for me…

Its predecessor the BBS02 would sometimes falter if run at peak power for too long of a time but those days are over with the BBSHD. Completely redesigned with thicker windings, giant heat dissipating fins and a powerful 12 FET controller. There is nothing else like it on the market.

Go ahead, beat on it, the BBSHD was designed to take all of your abuse and more.

That and the fact they have user reviews that seem to prove it.

The commerce site they have is not great but it does the job. Prices are very reasonable. The price of bike components are as good or better than prices you might find on Jenson USA. This is great. I expected them to be higher as most smaller bike companies will inflate prices. Luna could easily mark up prices and still sell due to convenience to someone buying an ebike kit but they don’t.

When I was getting the 15H error they helped me trouble shoot and were very quick to respond.

Luna looks to be run by some enthusiastic ebike advocates. They post test of their products on Facebookwere and tease new products. It is great to get a window into their culture and business.

Anyway, I recommend them for what it’s worth.

What Does BBSHD Error 15H Mean?


I was just riding along when “Error 15H” showed up on my color Luna bbshd dashboard. A “check engine light” was next to it. When I see this in my car I usually ignore it. 😉 So I cautiously did the same on my bbshd conversion! After all I was not gonna pedal the 60 lb beast home. Of course I’m man enough but I digress.

What does 15H Error mean???

Bottom line is the speed sensor was not connected all the way. 

Luna and the electricbike forum were very helpful in resolving. Luna offered a new sensor if the issue persists. I am liking Luna a lot so far.

2 eMTB Lessons Learned| Ride 10 | bbshd DB hook

Above is why I always ride cheap derailleurs. And why I am buying a second speed sensor.

A week ago while gaming with my buddies I told them I can’t figure out exactly what this bike is good at. Yes, it’s fast. Yes, it climbs hills faster than I can with leg power and with little physical exertion. But it was hard for me to say the overall enjoyment level beat regular pedal mtbs. Also I preferred pedal assist much more.
Well on ride 10 that changed. Here’s how…

1) I adjusted the thumb throttle so that wide open was in a natural position for my thumb

Before this ride I realized that when the throttle was wide open my thumb was just below the level of the bar which was very unnatural. When installing I did not think much about ergonomics and how to position the throttle. It matters.

This pic off “Full Throttle” shows how not to set it up…


This pic shows where your thumb should be at “Full Throttle”…

2) Ride it like a “2 stroke”

…well I guess how I used to ride two strokes 😀 which isn’t well LOL. What I mean by that is the power is crazy high on a rigid rear triangle, bbshd mtb that is geared 36:32. 36 Leccy front sprocket to 32 tooth rear. Just like power to weight ratio on a 2 stroke dirt bike. Yes, I know 2 strokes have a non-linear power delivery and power band and and electric has flat power curve. But honestly the bbshd power delivery is a bit unpredictable with stock programming from Luna Cycle (and maybe all bbshd?). When you “roll on” the throttle there is a delay in power delivery. Kind of like the unpredictable power of a 2 stroke dirtbike. How do you adjust for that? …point and shoot with full throttle!!!

Just after the apex of a turn look where you want to go and go full throttle and be ready for it. Get off the seat. Elbows out. Weigh the pedals right. Good riding position. No riding like it’s a couch which is how I tend to mountain bike in the Midwest on flat terrain. Let the bike do its thing underneath you. Let it buck and wheelie and loose traction. Be ready to tap the brake as needed to get things under control.

I had so much fun riding it aggressively. And yes I plan on crashing soon riding it like this but I’m ok with that.

I’m sure there are ways to change programming to get a more predictable power delivery which I’ll look into but for now it’s grip and rip 😉

All that said this is not a dirtbike. It does not deliver dirt shoveling power. It’s not a two stroke at all. But it is also not a mountain bike anymore. Or is it? Man I still can’t wrap my mind around this thing and I think that is part of why I love it.

Bafang BBSHD On A Diamondback Hook | My First eBike Build

After a decade or more of interest I finally decided to build an ebike. I tend to over analyze things and enjoy the research process. Combine that with a major job change 5 years ago caused the delay. All poor excuses!

Anyway, here is a summary of how I got here…

My eBike Conversion Criteria

  1. Must be off-road / midwest singletrack capable
  2. Must have front suspension at a minimum. Rear would be great.
  3. Cost must be under $750. Otherwise I would just buy a Rockshox Bluto for my Fatboy and convert that.
  4. Disk brakes (cable or hydrolic)
  5. Modern geometry with relaxed head angle to deal with higher speeds
  6. Threaded bottom bracket compatible with bbshd motor

Choosing My ebike Platform

I have the following bikes in my garage right now that I could have chosen to convert:

2010 Trek Fuel EX8

2015 Specialized Fatboy

1998 Specialized Stumpjumper

2016 Specialized Diverge

Long story short, I like pedaling the Fuel and the fatboy so did not want to lose them for mtb rides with my buddies. The stumpjumper has rim brakes and no mounts for disk and I wanted the power and consistency of disk brakes. I wanted a bike to ride off road so the Diverge is out even though it is a “gravel bike”and by design can handle some abuse and light offroad riding.

I decided to buy a new, inexpensive bike for the build. I found a Diamondback Hook at performance bike for $500. It looks awesome, has a sturdy and probably over engineered frame and low end components. Perfect for the build because I figured I was bound to screw something up and trash  the bike. Turns out I did not damage the bike. Well, the ISCG mounts on the bottom bracket had to be ground off to fit the bbshd. Pics are below. Warranty voided! 😀 It has mechanical disk brakes that can be used with stock brake levers provided by Luna Cycle and other bbshd conversions. With the long length of the stock levers there is more than enough braking power with the Tektro mechanical disk brakes. Add to that, cables are very low maintenance and simple compared to hydraulic.

My build kit is a Luna Cycle 100mm bbshd. 52 Volt dolphin pack. Specs are below…

Item # Description Qty
Bafang BBSHD Mid Drive Ebike Kit 1
PRGRM-HOTROD MISC: PROGRAM HOT ROD 1
BBSHD-MTR-100mm BBSHD: MOTOR 100MM 1
BBSHD-CR-46T BBSHD 46T Stock Steel Chainring 1
BBSXX-DISP-LUNA750C Luna 750c Full Color Display for BBDHD and BBS02 1
BBSXX-THMB-U Bafang BBSHD and BBSO2 Universal Thumb Throttle 1
BBSXX-BRAKES-PAIR-SLVR BBSXX: BRAKE PAIR – SILVER 1
52-DLPHN-11.5-PF PACKS: 52V DOLPHIN PF 1
CHRGR-52-3A-XT60 52v 3amp Luna Mini Charger 1

Bottom line is is love the bbshd on the DB Hook! I have a Leccy 36 tooth chainring on  it. When in the lowest rear cog (largest ring) in  back the bike climbs and wheels on demand. In high gear I can do about 30 mph on flat. Maybe more.

Check the pics below. I’ll post up more information soon.

 

db hook before conversion to ebike.

 

Me with ebike grin after first ride. It was pouring rain. Almost crashed!

Had to grind off ISCG chain guide mounts to fit bbshd.

100 mm bbshd needed many spacers. Should have bought 73mm.

bbshd plugs for speedo, brake cut offs, and speed sensor.

Color display for bbshd.

Pedego Destroyer Electric Fat Bike

Now this is a cool idea. Take a fat bike and electrify it to remove one of the few gripes folks might have about it.

The beauty of fat bikes is their simplicity and huge contact patch of their extra-large tires. The added weight of the tires and additional rolling resistance of the contact patch make the bikes feel slower than a regular mountain bike.

In theory, putting an electric motor in the rear wheel would make an all-terrain monster out of a fat bike. Pedego decided to do exactly that with their latest ebike, The Destroyer. Check the press release below for more info. I want to ride one! Wish I was at Interbike.

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