New 9C motor M3007 Cruising!!!

[RideTheLine]

I just ordered this for a MTB / commuter bike.
http://www.ebikes.ca/shop/ebike-parts/motors/m3007rc.html#
I'm just curious if anybody has any experience with them?

I'm going with,
-9C M3007RC
-Lyen's 12FET Modder
-10Ah of HK Lipo @ 48V
-CAv3
-half-twist throttle w/ ebrake sw.
-magnetic hydraulic brake switches
-PAS sensor

This is all going on my 2012 Specialized Carve Pro 29'er.
This will primarily be a commuter that can hopefully take some abuse on hills and some Cross country trails.
Looking for a 20 mile range @ 30mph and 30-40 miles @ 20mph.
Since there is barely any info out there about the 9C M3007,I will more than likely be doing a build journal in a fresh thread.
Any replies will be appreciated. Let me know what ya think. Thanks in advance.

 

[RideTheLine]

Btw I'm just getting started with my ebike addiction, but I'm fairly familiar with electronics (automotive diag tech, current engineering student & various other addictive hobbies).

I would like to thank the forum members here for all the info I have collected so far (which is substantial!)

Can't wait to give back to this community!

The Controller is gonna be here today. Thanks Lyen!

The Hub & CAv3 will possibly show up today as well!! Shot out to Justin @ ebike.ca..

Where on this site should I start the build log? (Gonna post plenty O' HD porn )

Judging by some more testing on ebike.ca's motor simulator, I need 72V & 10Ah to get me to my short term goal.
What do you guys think?

 

[RideTheLine]

I hate waiting for the mailman... The funny thing is the post office is not even a hundred yards from my house, but I'd swear I'm the last stop

 

[RideTheLine]

Here's the rig...

 

[RideTheLine]

What came in the mail today!!!

Lyen's 12FET Extreme modder

Couldn't help but to look inside...

Hydraulic brake sensors, also from Ed

Cheap short term ebay battery storage...

 

[RideTheLine]

Here she is...

These are some camera phone shots, I'll get some shots with my cannon in a little bit.
Definitely narrower than I had imagined, but way heavier than it looks (15lbs.)
Some random calc HW with that last one. If you guys help me with that one, I might have enough energy left to
take her clothes off and get some nude shots of this bitch. (Her clothes are coming off either way but the camera work will be
easier if my hand isn't worn out from Calc...)

I don't know why I got all this stuff two weeks before finals.

 

[ecycler]

Cool. Looking forward to seeing the results. As far as your calc equation goes... that appears to be a trick. You sure you copied to paper correctly?!

 

[RideTheLine]

Cool. Looking forward to seeing the results. As far as your calc equation goes... that appears to be a trick. You sure you copied to paper correctly?!

A trick...Your being to kind. I haven't gotten to it yet but I'm sure that when I do, I will call it much worse.

 

[RideTheLine]

Couldn't wait,

It fits like a dream so far.

Rotor alignment is dead nutz...

The caliper clears by 2mm max With the stock 160mm rotor (you know that ain't gonna last long.)

The torque arm even lines up with an existing mount 8) 8) I almost got a chubby when I noticed that.
The thought of hose clamps on my bike worried me...(IMO they should only be under the hood of gassers :lol: )

The PAS magnets even look like they belong.
I didn't realize how much I gotta clean them sprockets until I saw this pic...

 

[RideTheLine]

Getting all ten gears on that might be tricky, probably gonna end up spreading the rear arms a little.

So I'm thinking about lacing this up with a 3-cross alternating pattern.
Near tangent spoke angles at the hub. Looks cool and strong(I'm no expert on the strong part...)
The catch becomes the spoke angle...
A whopping 68 degrees, from what I have read anything tighter than 70 is taboo.
I like to push my luck some time The must be some margin of error here...hehehe

Has anyone pushed the angles that hard with any luck? 2.0mm spokes x 276mm long BTW

 

[ecycler]

If you are going to run 35-40 amps and plan on 72 volts, you are going to want much better torque arms than that. I spun a HT3540 in the dropouts about 15 degrees with much larger torque arms running 72v and 40amps. It was not catastrophic, but damn was that thing hard to get out when I had to replace the tire. I am glad I got a flat when I did!

 

[spinningmagnets]

The 12-FET controller and this 30mm wide stator in the motor should easily handle frequent accelerations of 40A when the light turns green. 48V X 40A = 1920W, so...I think you will be very pleased with using this combo as a commuter.

 

[RideTheLine]

I'm going to be starting with 48V but will definitely be bumping up to 72V in the future. I was planning on playing amps by ear... It sounds like the controller has me covered until at least 65 amps 'out of the box'. Maybe I'll make a matching torque arm for the other side for playing with 48V and research beefier ones for the 72V jump...

 

[RideTheLine]

Productive day today

Got the wheel laced up, cassette, and rotor mounted this morning
All ten speeds out back..Stoked!
I had to grind the rivets on the back of the cassette down in order for it to clear the hub.
The caliper needed a little love to clear the hub with the stock 160mm rotor, if I had a 180mm it would have cleared no problem.
Blasted around the neighborhood for a few mile to do a shakedown w/o power.
The added weight is tolerable on flats and mild hills, but get a good grade and you fell the burn.. Gotta love that Lactic acid....
No funny noises from the spokes. Phew...

 

[RideTheLine]

Got most of the components mounted today, time to break out the soldering gun

 

[RideTheLine]

A few hours of soldering and pulling wire, she's coming along...

Days like today make me wish I had a bike stand...

Another half a day of wiring and we'll be in good shape.

If you are going to run 35-40 amps and plan on 72 volts, you are going to want much better torque arms than that. I spun a HT3540 in the dropouts about 15 degrees with much larger torque arms running 72v and 40amps. It was not catastrophic, but damn was that thing hard to get out when I had to replace the tire. I am glad I got a flat when I did!

Thanks for the heads up ecycler, definitely starting off with 48V and a modest amp limit. Maybe 30-35A.

The 12-FET controller and this 30mm wide stator in the motor should easily handle frequent accelerations of 40A when the light turns green. 48V X 40A = 1920W, so...I think you will be very pleased with using this combo as a commuter.

I can't wait to take this rig for a ride. I got a mobius action cam recently so some videos of the ride soon...

 

[Ykick]

Good fun. I don’t recall seeing spoke angles that extreme too often? Is that 3 cross?

 

[RideTheLine]

Good fun. I don’t recall seeing spoke angles that extreme too often? Is that 3 cross?

Ykick, Yes, 3-cross indeed. The wheel is as stiff as the Roval that came off the back, I just hope the spokes can handle that bend at the nipple.
I know I'm pushing their limits... But hey isn't that why were all here. :lol:
I got a pack of 50 spokes, so if they start popping I got plenty left to hold me over while I order spokes for a 1 or 2 cross relace

 

[Samd]

3 cross?!

Interesting build. A big motor for a delicate bike. Watch that torque arm. It's risky.

 

[999zip999]

I run those serfas drifter in the survival plus model. Work good and last longer then just the stock model.

 

[RideTheLine]

So after another day wiring and a little setup on the CA...
Set the Amp and speed(mph) limit to 25, watt limit to 1200, turned on PAS, and turned regen on.

Took her out for a 10 mile voyage and everything went fantastic!!! So how long does the Ebike grin take to wear off?
When I got back I noticed the epoxy for the brake sensor magnets never set (old tube of epoxy) so I popped them off and went to the hardware store.
While I was riding earlier I couldn't help but wonder how strong the regen was, so this ride it was off and WOW what a difference!!!
My last set of brake pads lasted about 10,000 miles, I don't see myself replacing them again, that's for sure.

I wonder how many people after many laborious hours, shit their pants the moment they hook up the battery and see that big ass ARC
For a few brief seconds I had lost ALL HOPE.... But then I hit the ignition switch and she came to life... PHEW..

3 cross?!

Interesting build. A big motor for a delicate bike. Watch that torque arm. It's risky.

I had ordered the spokes before I even knew what spoke angle was, by the time I realized it was to late (not really) LOL.
I looks gorgeous, or is this like dating the smoking hot blond (psycho) all you friends told you to stay away from... lets just hope they hold up. I came off some tall curbs pretty hard today as a test/stretch...They definetly stretched. I'm going to tighten them up and re-true the wheel tonight. I'll find out on the next pot-hole

The rest of the torque arm was in the package, so I busted it out and bolted it up. Before I step up the V's & A's I going to get some plates cnc'd to bolt on both sides. Thanks for the heads up everybody.

This motor has some pep @ 1200w w/o PAS, hits the 25 mph limit in a few seconds.
I set the PAS limit to 500w of assist and that would help me to 25mph in a rush!

Here is a shot of the PAS location (ziptie heaven down there) gonna clean everything up as component locations get firmer.

It's all roughed in, but the throttle cable interferes with the shifter

I run those serfas drifter in the survival plus model. Work good and last longer then just the stock model.

I probably have over a thousand mile on these and I can still read the serfa imprint on the center of both tires!
Hefty looking 29'er street tires are rare around boston for some reason These weren't what I intended on getting at first but
they grew on me and I am more than happy with them.

 

[RideTheLine]

She's running like a champ! I did a 25 mile round trip commute to school without issues

So, I was riding down the street and the were a few cars stopped ahead of me (to let kids cross), as usual I slow down maybe 25 yards shy so I don't have to dismount. The guy behind hits the horn because I'm in the road... I briefly look back, but ignore him for the most part. A few seconds later the cars in front of me start going, I start going..He realizes I can keep up with the traffic.. He has a change of heart and tell me he's sorry and likes my bike...

 

[ecycler]

Glad it is working out for you. Please take frequest looks at your axle/torque arm. With only one and running regen you are definitely playing with fire. It will eventually work loose especially without nordlocks.

 

[RideTheLine]

Glad it is working out for you. Please take frequest looks at your axle/torque arm. With only one and running regen you are definitely playing with fire. It will eventually work loose especially without nordlocks.

The bike is still running great!! Just crossed the 1000 mile mark on the odometer. Popped one spoke @ 300 miles, but I think that one had to much tension on it...
The torque arm is doing good ecycler, had it loosen up a few times, gonna order another soon. I can feel it get loose so I just give everything out back a few turns of a wrench, nothing major. Thanks for the heads up though! I'll have to look into the Nordlocks.

Ive been meaning to get some updates posted but between school and work I'm straight out! College summer classes are a friggen marathon for your brain...

On a side note. I saw my first fellow ebiker whiz by me as I was sitting outside school yesterday...

 

[hydro-one]

a good way to check for motion is to lift the back wheel and put your hand on the axle /bolt. spin it p with the throttle and allow regen to kick in when its spun up. you will fee lthe movement of the assembly if its present. and it will be moving during regen with those puny torque arms. eventually failing . definetly run arms on both sides. one side torque arms is asking for axle failure,