What it REALLY takes to do your own conversion

bquick

10 W
Joined
May 22, 2008
Messages
73
I'm nearing completion of my Ninja 250 conversion and it's been somewhat of a comedy of errors. So I thought I'd detail some of the fun. I don't know about these guys that say they did their conversion in two days.

I bought the bike with a blown motor from a guy on Craig's List. No problems.

I ordered LiFePO4 batteries directly from China. I had to wire transfer them a lot of money. Right after ordering, I started reading messages on the web about how I shouldn't send money to this company because people hadn't been getting their batteries. What a bad feeling. As it turns out, the batteries arrived right on time. No problem here. Big relief.

I ordered a DC-DC converter from California (I'm in NY). A few days later, a woman calls me at work and says, "The Astrodyne converter you ordered is out of stock, but we would like to send you a Sevcon for the same price." Remembering that the Sevcons were more expensive, I said "Sure". Later that day, I looked it up on their web site and found that Sevcon didn't make one for 64V input. I called and left a message on their machine explaining the situation. A week later, the Sevcon arrives, rated for 48V input. I sent it back and they sent me one for 72V input. Hopefully, it will work.

I found the rear tire was dry rotted. I could get a new one on line, but I decide to give the local shop some business. They call to say the tire is in. I bring the wheel over. They call to say they ordered a front tire, not a rear. They order a rear and install it. A few weeks later, I realize that the front is also rotted. I call them up and the front tire is no longer there. They order another one. I bring the rim. They install it. I put it on the bike and realize that it's not seated on the rim properly. I bring it back and they fix it.

I order a longer rear brake line because I had to flip the wheel over to move the chain to the other side. The brake line arrives. About a week later, the same brake line arrives again, even though I only ordered one.

I'm building a BMS using 20 microcontrollers. I order sockets for the 20 microcontrollers. They come in, but they are the wrong width. My fault. I order more, making sure they are the right width. They don't arrive. I check the tracking and it shows they were delivered to an address in another state. I call the distributer. The package was damaged, so UPS shipped it back to the distributer's warehouse. The send my order again, this time next day air. It arrives. They are the wrong size again. The web site description was wrong. I cut them down to make narrow ones.

I go to the place I got the tires and buy master links for the 520 'O' ring chain since I have to make it longer. A week later, I try to put the chain together and the master link doesn't fit. It turns out that Polaris 520 chain has a different sized pin than other "O" ring chains.

I order a Perm 132 motor. A shipment is coming in from Germany. The US distributer sends me an email to tell me that they got the motors, but they were all damaged and will have to send them back. It will be over a month before they get new motors. I find a company in CA that expects to get a shipment in in a couple of weeks. After a couple of weeks, I call and they say there was a mix up at the factory and the motors won't ship from Germany for another week. It has finally shipped from the distributer in CA. It's the last piece I need before I can ride it.

All this, and it's still a lot of fun.

Can't wait to ride it!

- Brad
 
Sorry Brad,

Maybe one more to add to the list.
I order a longer rear brake line because I had to flip the wheel over to move the chain to the other side

Most motorcycle tyres have a direction of travel arrow on them. If you flipped the wheel around then the tyre would be rotating in the wrong direction.

Greg
 
Greg,

I'm on top of that one. When I got the new rear tire, I made sure they put it on backwards. No problems there.

- Brad
 
tailwind said:
Sorry Brad,

Maybe one more to add to the list.
I order a longer rear brake line because I had to flip the wheel over to move the chain to the other side

Most motorcycle tyres have a direction of travel arrow on them. If you flipped the wheel around then the tyre would be rotating in the wrong direction.

Greg

Depending on the brand, it usually isn't that big of a deal. I once used one set of tires for 7 race weekends, flipping it after every weekend to get a good wear out of the whole tire. Won all seven weekends. Back in the day I used to flip every set at least once.
 
Well..... there's more to the story.

I finally received my Perm 132 motor, the last piece I needed before I could start riding! Phew! The motor mount was already on my bike when I got it and it bolted into place perfectly. Life is good. A spin of the motor shaft gave a pleasant whirring sound.

I had a front sprocket ready to go, bored to 3/4" diameter and key seated. The motor came with a 3/4" shaft and a 6mm keyway. Fortunately, at work we had a 6mm broach for 3/4" bore. What a stroke of luck. I brought home the sprocket. It's a little tight on the shaft of the motor, but not too bad. I take a wooden block, put it against the sprocket and gently tap the block. The sprocket moves into place nicely. I go to spin the shaft and it doesn't turn! Panic time!

I pulled the motor out and started disassembling it. I probably should have sent it back to the distributer in CA, but I was desperate to get the bike running. While disassembling it, I break two brushes! Ahhhhhhh...

I figure out that the motor has shims in the front to keep the shaft from moving in the front bearing. After multiple emails to the factory, I understand now that the motors shouldn't have shims, but they had a batch that wasn't within tolerance, so they added shims. Unfortunately for me, they didn't put enough shims in my motor so when I tapped on the shaft, it slid in the bearings and the rotor rubbed on the magnets. I had the motor apart many times before I figured out just how it was supposed to work. I eventually got it back together, though. Do you have any idea what it costs to get brushes shipped UPS next day air, Saturday Delivery from CA to NY?

At least it's running now and I'm having a ball. Heres a video:

http://www.youtube.com/watch?v=b5l3BaYCV-w

- Brad
 
Great work... Rock-ON.

:mrgreen:
 
dude, you've had some bad luck, sorry bout that... I know what its like... i've been waiting 4 months on my controller (I'm working with a company who's designing it). The contactor I had had a short to the case, 2 contacts didn't work. The Charger stopped working (need to look inside), the chain I got stretched a TON the first week I got it, and started squeaking (cheap chain).

Keep working on it though, things on my bike are always in a constant state of imporovement. The end result is awesome!
 
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