Chaper Five: Patience is a virtue

Santa was good to me, no coal, instead an Old Man Mountain Red River rack and some Rivendell spec Nitto Albatross bars. Both will make top quality additions to the Blast....sweet! Thanks Santa.

Then back to reality. It's been a long week of waiting for ordered parts. In addition to the clamps for the ebike project I'm waiting for a burner switch for the cook top and a new dash board for the better half's car, oh yeah those don't count here, oops. None will arrive until next week sometime.

Chapter Four: Head scratching and solutions

It has certainly been a memorable week or so. Hurricane type windstorm, the holidays and an ultra busy time at work. All have limited the time I could devote to the project at hand. Then again stepping away for a bit allowed me to get a fresh perspective and whittle away at the issues list.

Check out my proposed solutions,

A quick list of issues follows:

I. Down tube angle does not match angle of motor mount.

Solution: add a .25 inch spacer between motor mount and chain stays. This spaces the mount and allows attachment without bending the bracket.

Dennis's picture

Dahon Mu SL folding bicycle with a Bionx PL350 kit

Trip 16.7 miles at 15.5 mph average in 1hr 30mins at assist level 4 and pedaled to assist motor. The Bionx kit performed great up the hills that would normally exhaust me at the end of the ride on a non assisted bicycle. While non assisted bicycles were traveling up the steep hills at about 4-5 mph, I was able to climb the hills at 8 mph without pedaling and as high as 14 mph with brisk pedaling. I tackled the steepest hills I could find in Palos Verdes. I found that most recreational bicyclists avoided these hills and the higher I rode the better the views.

Chapter Three: Test fitting the motor mount

What's the brown leather belt for? Multiple choice test later in this entry.

Did my initial test fit of the motor mount and as expected the odd frame geometry is supplying more challenges.

A quick list of issues follows:

I. Down tube angle does not match angle of motor mount.

II. Supplied 2 inch round u clamp is not appropriate for this application.
A. Oval down tube is 2.25 x 1.25 inches = u bolt too short and too wide.
B. Round contact surfaces not a close enough match to distribute the clamping force allowing tube damage.

dicanio's bike

Hello all,


Chapter Two : Bottom bracket swap and chainline woes

Well, all the components and tools arrived from Harris yesterday. Order was complete including the grade 25 bearings. It came well packaged and everything was as advertised. I'll be ordering from them again if my LBS doesn't have what I need.

soldaze's picture

I like this board better

Hi, I was a serial lurker on the old board but learned a lot. I've got an old Raleigh Folder (1974) that I've cleaned up and replaced some parts, etc. I've got a WE BD36 hub motor ready to install. I've also got the batteries (BB) but I'm just trying figure out where to put them. I've got 4 x 12V x 12AH so I'd like to run 48V with the WE controller. Also just complete homebuilt lwb recumbent. ( see photo) Still trying to decide 1) should it be "electrified"? 2)How?

Puma Rear Motor setup


Just starting to set-up the Puma motor, this one is a rear and has the added bonus of a rear brake adaptor so I can fit a nice hydraulic brake to the bike when testing, will match the front as well with a new wheel and brake.

Otherwise its identical to the front motor, the cable is coming out on the left however I think that the new ones coming to Mark at TH are going to have the cable coming out of the right, will let you know for sure when they arrive.

My e-ride XPe: Chinese Sailing Ship?

removed by owner.


Chapter one: Starting down the ebike trail, decision and kit purchase

After much agonizing over which type of conversion kit to use I purchased an elation ebike bottom bracket drive kit from Oz which has finally arrived in the US after a bit of a wait. My main concern is no US distributor yet so it's all long distance so to speak.

I decided to go this route for multiple reasons. Local terrain includes many steep hills, the finished product needed to be light enough for me to lift into a transit bus bike carrier, I have no access to a machine shop and zero experience with electric bikes. This kit seemed to offer all that I was looking for. Mostly I wanted the bottom bracket mount Unite motor, motor freewheel adapter and the freewheeling crank set. I also liked the light weight, quick release, easy to carry, complete with handle battery pack.


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