Oatnet's x5403/Norco A-line, and Front-Mount battery stuff

Show off your E-bike creation here.
Post Reply
User avatar
oatnet   10 MW

10 MW
Posts: 2341
Joined: Apr 26 2007 3:03pm
Location: SoCal, USA

Oatnet's x5403/Norco A-line, and Front-Mount battery stuff

Post by oatnet » Nov 29 2011 1:07pm

Edit - this post has been renamed, from ???????? Vs x5403 - Fight, and CroMotor vs before that, because it evolved to be just about an x5403 build, and we covered a bunch of ground on why front battery packs improve handling.
==================================================

I have been planning a matched pair of builds to compare the new heavyweight hub motors, the CroMotor and the xLyte 54xx. Here are the 2009 Norco A-line frames I'll be using, a green standard model, and the red 'Park' edition. The red one is a nice burgendy as seen in these dim photos, but in the seller's bright ebay pictures it appears a candy red. The green pretty much lives up to the pictures.

I'll be using RockShox Boxxers on both mounts, I still need one more. I want the bike's to have superiour handling and balance, so once again I will be hard-mounting the battery case to the front forks, as I have with my past 5 or 6 builds.

Since I discovered and pointed out that the actual KV of the CroMotor is 37% off of what Greyborg reported, I am in a bit of a tizzy trying to match the builds up again. When Greyborg announced that the motor had a KV of 9.5 (instead of the expect 13kv-14kv that would have matched the Italian's 140kph), I increased the rim diameter to keep the motors equivalent to keep the motors on the same playing field Now that we know the KV is 12.98, that rim is way too big. Too bad, I don't need 100mph so all that high-end is wasted, I would gladly trade it for low-end grunt and efficiency. So I do I build the xlyte so that it matches the CroMotor for the comparison, or do I build it the RIGHT way?

-JD
Attachments
640_IMG_9753.JPG
They are so cute at that age... Nuzzling up to the fork like that.
640_IMG_9753.JPG (66.62 KiB) Viewed 8704 times
640_IMG_9755.JPG
640_IMG_9755.JPG (61.53 KiB) Viewed 8703 times
640_IMG_9756.JPG
The only frame difference I can detect between the A-line and the A-line Park Edition is this little 'Park' on the label. The real differences must have been the hardware they were equipped with.
640_IMG_9756.JPG (72.46 KiB) Viewed 8703 times
Last edited by oatnet on Nov 06 2012 11:26pm, edited 2 times in total.
Member 117 of 26,000+

153v DUNE BUGGY © 164v Vectrix E-Moto © 72v Norco A-line/x5403 © 60v Specialized Enduro Comp/BMC © 72v x5tracycle © 48v TF IO/BMC © 36v Kepler FrictionDrive © Spot-Welding a123 © Pelican Front Packs © Vectrix Battery Replacement © MORE !!


Image大鸡巴 Motors
Knowledge is acquired through experience, everything else is just information - Albert Einstein
"Cheater?" I'm not competing, I'm Commuting!

User avatar
liveforphysics   100 GW

100 GW
Posts: 14134
Joined: Oct 29 2008 1:48am
Location: Santa Cruz, CA, USA

Re: Cromotor vs 54xx - Fight!

Post by liveforphysics » Nov 29 2011 1:27pm

oatnet wrote: I increased the rim diameter to keep the motors equivalent to keep the motors on the same playing field

That's not how it works my friend. Anytime you increase wheel diameter, you simply decrease the power the motor is capable of outputting. If you find yourself in a situation with a motor that has too low of a kv, you simply increase the voltage to reach the RPM you require. That lighter stator with less coreloss and a much better magnetic design is going to love spinning at higher RPMs than the 54xx is going to want to see.

Smaller wheels mate! Smaller wheels!
Each carcinogen vapor exposure includes a dice roll for cancer.

Each mutagen vapor exposure includes a dice roll for reproductive genetic defects in your children.

Each engine start sprays them into a shared atmosphere which includes beings not offered an opportunity to consent accepting these cancer experiences and defective genetics life experiences.

Every post is a free gift to the collective of minds composing the living bleeding edge of LEV development on our spaceship.

User avatar
oatnet   10 MW

10 MW
Posts: 2341
Joined: Apr 26 2007 3:03pm
Location: SoCal, USA

Re: Cromotor vs 54xx - Fight!

Post by oatnet » Nov 29 2011 1:56pm

liveforphysics wrote:That's not how it works my friend. Anytime you increase wheel diameter, you simply decrease the power the motor is capable of outputting. If you find yourself in a situation with a motor that has too low of a kv, you simply increase the voltage to reach the RPM you require.


I am on the same page Luke, but I don't have any headroom on voltage - each bike is getting a 144v Kelly controller. :mrgreen: I am a big believer in getting power into a motor with volts instead of amps, to decrease resisitive losses and thermal load, so I started with as many volts as I could put in. That only left me the rim to tune with. :oops:

On paper, it is a 110mph build right now, if it can overcome drag, and much faster than I will take it. That speed is more your territory, glad to have you get it to that point, but I don't see you seeking out hubbie rides. :lol: :lol: :lol:
liveforphysics wrote:That lighter stator with less coreloss and a much better magnetic design is going to love spinning at higher RPMs than the 54xx is going to want to see.
I didn't have the vocabulary to describe the causality, but from my seat-of-the-pants experience that is sort of what I expected this would prove out. I'd hoped to configure the motors with similar top end, so we could compare acceleration, efficiency, etc. So its a direction change for the project, I need to figure out where I want it to go now.

-JD
Member 117 of 26,000+

153v DUNE BUGGY © 164v Vectrix E-Moto © 72v Norco A-line/x5403 © 60v Specialized Enduro Comp/BMC © 72v x5tracycle © 48v TF IO/BMC © 36v Kepler FrictionDrive © Spot-Welding a123 © Pelican Front Packs © Vectrix Battery Replacement © MORE !!


Image大鸡巴 Motors
Knowledge is acquired through experience, everything else is just information - Albert Einstein
"Cheater?" I'm not competing, I'm Commuting!

User avatar
gensem   100 kW

100 kW
Posts: 1461
Joined: Apr 01 2011 5:28pm
Location: Sao Paulo - Brazil

Re: Cromotor vs 54xx - Fight!

Post by gensem » Nov 29 2011 2:05pm

Humm... Smaller wheel would be better for a head to head comparison (Another wheel rebuild?) hehe.
I ll be running my commuter with a 24" bicycle wheel and 18s lipo with around 100 amps.
But my second Hal´s motor ll be used for "racing" in a 14-16" moto rim and 24s lipo and alot of amps.

Im betting in Cromotor. :mrgreen: :mrgreen:
Last edited by gensem on Nov 29 2011 2:14pm, edited 1 time in total.
Justin we really appreciate what you did!

User avatar
neptronix   100 GW

100 GW
Posts: 14168
Joined: Jun 15 2010 5:56pm
Location: California refugee living in Utah, USA
Contact:

Re: Cromotor vs 54xx - Fight!

Post by neptronix » Nov 29 2011 2:14pm

Hmm.. i see what you were going for here.
I am one of those folks that is holding out to see if the real life performance is really that much greater than the crystalyte 5xxx.
"Love and compassion are necessities, not luxuries. Without them, humanity cannot survive." - Dalai Lama

My first major build: 1.6kW 8T MAC motor on a Trek 4500.
The new all-arounder: Leafmotor 1500w @ 4kW on a Turner O2 full suspension.
The monster scooter: 20" eZee on a Cannondale Semi Recumbent.
Whipper-snapper: ? on a lightweight BikeE Semi Recumbent

User avatar
Ypedal   100 GW

100 GW
Posts: 12523
Joined: Dec 27 2006 12:55pm
Location: Moncton NB, Canada
Contact:

Re: Cromotor vs 54xx - Fight!

Post by Ypedal » Nov 29 2011 2:48pm

smaller wheels and high voltage = win in my book.. but it's a tradeoff in handling /pedal cadence if you care about those factors..

144v.. geezus.. 20" wheels man... 20's !!!
ES site status page:
http://www.ypedal.com/ES/ES.htm
----------------
http://www.ypedal.com

itchynackers   100 kW

100 kW
Posts: 1081
Joined: Dec 27 2009 11:11am
Location: Janesville, WI

Re: Cromotor vs 54xx - Fight!

Post by itchynackers » Nov 29 2011 2:57pm

What are the benchmarks? Are we having an acceleration shootout? Top Speed without melting? What?
9c 9x7f w/ 12awg phases
9c 8x8r w/ 10awg phases, temp sensor, vented
9c 6x10r w/ 10awg phases, temp sensor, liquid cooled, 3rd Place Pikes Peak 2012!

"Don't argue with the galactically stupid...they drag you down to their level and beat you with experience"

User avatar
oatnet   10 MW

10 MW
Posts: 2341
Joined: Apr 26 2007 3:03pm
Location: SoCal, USA

Re: Cromotor vs 54xx - Fight!

Post by oatnet » Nov 29 2011 4:01pm

itchynackers wrote:What are the benchmarks? Are we having an acceleration shootout? Top Speed without melting? What?
I wet my 'Depends' above 50mph on a bicycle, so I'll leave the Top Speed without melting to young bucks like Luke and Doc. I was looking more to compare acceleration at different speeds, efficiency (although I expect similar results), some handling at those speeds - just to compare and contrast on the butt-dyno.

-JD
Member 117 of 26,000+

153v DUNE BUGGY © 164v Vectrix E-Moto © 72v Norco A-line/x5403 © 60v Specialized Enduro Comp/BMC © 72v x5tracycle © 48v TF IO/BMC © 36v Kepler FrictionDrive © Spot-Welding a123 © Pelican Front Packs © Vectrix Battery Replacement © MORE !!


Image大鸡巴 Motors
Knowledge is acquired through experience, everything else is just information - Albert Einstein
"Cheater?" I'm not competing, I'm Commuting!

zombiess   100 MW

100 MW
Posts: 2911
Joined: Feb 01 2011 2:16am
Location: Ventura

Re: Cromotor vs 54xx - Fight!

Post by zombiess » Nov 29 2011 6:33pm

oatnet wrote:
itchynackers wrote:What are the benchmarks? Are we having an acceleration shootout? Top Speed without melting? What?
I wet my 'Depends' above 50mph on a bicycle, so I'll leave the Top Speed without melting to young bucks like Luke and Doc. I was looking more to compare acceleration at different speeds, efficiency (although I expect similar results), some handling at those speeds - just to compare and contrast on the butt-dyno.

-JD
50MPH isn't bad at all on the right bike, just design it for the speed you want to go. I had my friend who had never been on an ebike before in his life doing 50mph on my mini monster within the first 5 mins of him taking his first spin and his only previous experience was a tiny bit of riding dirt motor cycles. I just dialed it back so it wasn't as violent at low speed like I like and he loved it and said it felt fine. He's also a bigger wuss than I am.

Oh yea, 20's rule!

User avatar
MadRhino   100 GW

100 GW
Posts: 6118
Joined: Sep 03 2010 5:28pm
Location: Montreal QC Canada

Re: Cromotor vs 54xx - Fight!

Post by MadRhino » Nov 30 2011 12:30am

You are right, the A-Line Park was a pimped vesion, the frame is the same. The Team DH is almost the same, with a slacker steer angle.

I will build the same 2 motors, but 2 different bikes. The Cro-motor will ride the mountain on a Santa Cruz V-10, while the X 54 will be on a Lapierre DH that I will mod and build for the street, because 30 pound of hub is too much to properly tune the best DH suspension to ride the mountain.

I expect the Cro-motor to have much better performance, and the X 54 to be able to shed heat better. That also influence my choice, for my mountain lap requires more raw power, and is never longer than 15Km quickly done. I make more heat on the road, with longer course and alot of stop and go. I expect both bikes to be very good for their specific task.
Make it fool-proof, and I will make a better fool.
Current bikes
Street: https://s20.postimg.org/ewrvugywt/Session_04_2015.jpg
Dirt: https://s20.postimg.org/lbqwr55ml/IMG_0157.jpg

User avatar
Microbatman   1 kW

1 kW
Posts: 304
Joined: Nov 26 2007 1:13pm
Location: Lantana Texas
Contact:

Re: Cromotor vs 54xx - Fight!

Post by Microbatman » Nov 30 2011 3:48pm

Are those modular(removable) drop outs in the Norco Frame ?
Are you planning on making a custom machined steel torque arm droppout to be compatable and simply bolted into the frame replacing the stock ones?

It will be very intresting to see where you put the batts in that teardrop shaped frame triangle.
Thanks for the comparison. My bet is Cromotor wins in all catagories.
Looks like another great build happening here.
MotorCrystalyte X5304 20 Inch Rear Wheel DISC Brake Controller Crystalyte 48A72V4110MOSFETS
Batteries A123 24s2p
Charger Mastech 5020
Frame Azonic Steelhead
Grateful/fortunate/blessed to have the resources and family support to enjoy my ebike hobby

Hillhater   100 GW

100 GW
Posts: 10660
Joined: Aug 03 2010 10:33pm
Location: Sydney ..(Hilly part !) .. Australia/ Down under !

Re: Cromotor vs 54xx - Fight!

Post by Hillhater » Nov 30 2011 5:31pm

Just curious:-- why use the Norco's ..when all those TF750's are stacked around there ?? :lol:
This forum owes its existence to Justin of ebikes.ca

User avatar
oatnet   10 MW

10 MW
Posts: 2341
Joined: Apr 26 2007 3:03pm
Location: SoCal, USA

Re: Cromotor vs 54xx - Fight!

Post by oatnet » Dec 02 2011 1:10pm

hillhater wrote:Just curious:-- why use the Norco's ..when all those TF750's are stacked around there ??
Good Eyes! :shock:

I try to buy and test every new ebike product I can get my hands on, and the TF frames have been convenient test mules, so in the past 5 years I have built sooooooo many ebikes on TF frames - I need something different.

Oh, and at 144v these have a no-load of 128mph, using the conventional 80% formula that yields 102mph road speed with a heavy rear hub motor - anyone brave enough to test those limits (not me, volunteers?) will want suspension to keep the rims from tearing apart at the first pothole.
Microbatman wrote:Are those modular(removable) drop outs in the Norco Frame ?
Are you planning on making a custom machined steel torque arm droppout to be compatable and simply bolted into the frame replacing the stock ones?
You are correct, I am trying to replicate the removable dropouts in steel, and bolt them right in. Snowchyld has done his own set, very impressive. I was specifically looking for frames with removable/adjustable dropouts; the A-Line seemed the strongest of the bunch, and it was the only one I found with 3 bolts.
Microbatman wrote:It will be very intresting to see where you put the batts in that teardrop shaped frame triangle.
Once I experienced the superior handling of a front-mounted battery pack, I knew I would never go back to a triangle or rear-mounted pack, there is no comparison. I've done 5 builds with a front pack since, even Mrs. Oatnet's bike has a front pack now. Here is a pic of my favorite example:

-JD

Image
Member 117 of 26,000+

153v DUNE BUGGY © 164v Vectrix E-Moto © 72v Norco A-line/x5403 © 60v Specialized Enduro Comp/BMC © 72v x5tracycle © 48v TF IO/BMC © 36v Kepler FrictionDrive © Spot-Welding a123 © Pelican Front Packs © Vectrix Battery Replacement © MORE !!


Image大鸡巴 Motors
Knowledge is acquired through experience, everything else is just information - Albert Einstein
"Cheater?" I'm not competing, I'm Commuting!

itchynackers   100 kW

100 kW
Posts: 1081
Joined: Dec 27 2009 11:11am
Location: Janesville, WI

Re: Cromotor vs 54xx - Fight!

Post by itchynackers » Dec 02 2011 2:02pm

At 100mph, I doubt you'd even feel a pothole. No time for the suspension to drop into it.
9c 9x7f w/ 12awg phases
9c 8x8r w/ 10awg phases, temp sensor, vented
9c 6x10r w/ 10awg phases, temp sensor, liquid cooled, 3rd Place Pikes Peak 2012!

"Don't argue with the galactically stupid...they drag you down to their level and beat you with experience"

User avatar
Kepler   1 GW

1 GW
Posts: 3239
Joined: Nov 08 2009 9:22pm
Location: Eastern suburbs Melbourne Australia

Re: Cromotor vs 54xx - Fight!

Post by Kepler » Dec 02 2011 3:17pm

Looking forward to seeing how these builds shape up. Love your work oatnet. 8)

The bike pictured a couple of posts ago is already one of my favorite hub motor powered bikes on the forum. Keep up the good work.
Current Rides

Lightest true ebike on the planet: ON ROAD viewtopic.php?f=6&t=74269
eBoost on facebook: http://www.facebook.com/pages/Eboost/200306283342024/

User avatar
oatnet   10 MW

10 MW
Posts: 2341
Joined: Apr 26 2007 3:03pm
Location: SoCal, USA

Re: Cromotor vs 54xx - Fight!

Post by oatnet » Dec 02 2011 4:46pm

Kepler wrote:Looking forward to seeing how these builds shape up. Love your work oatnet. 8)

The bike pictured a couple of posts ago is already one of my favorite hub motor powered bikes on the forum. Keep up the good work.
Wow Kepler, thanks for the kind words! :D I love your work too, I have been watching the series of impressive developments you have been making with your line of friction drives. Stealth is important to me, and your latest stealth drive is so invisible, I had to do a 'where's waldo' on your picture to find it. I remember someone else posted they though also thought it was the 'before' picture. :lol:

-JD
Member 117 of 26,000+

153v DUNE BUGGY © 164v Vectrix E-Moto © 72v Norco A-line/x5403 © 60v Specialized Enduro Comp/BMC © 72v x5tracycle © 48v TF IO/BMC © 36v Kepler FrictionDrive © Spot-Welding a123 © Pelican Front Packs © Vectrix Battery Replacement © MORE !!


Image大鸡巴 Motors
Knowledge is acquired through experience, everything else is just information - Albert Einstein
"Cheater?" I'm not competing, I'm Commuting!

User avatar
oatnet   10 MW

10 MW
Posts: 2341
Joined: Apr 26 2007 3:03pm
Location: SoCal, USA

Re: Cromotor vs 54xx - Fight!

Post by oatnet » Dec 02 2011 5:52pm

I got a few PMs asking about the battery box, so I thought I'd post details here. I've used two models of box so far, the Pelican 1300nf, and the Pelican/Hardigg im2075 storm case, both @$35 on ebay. Pelicans make great battery boxes because the are super-light, super-durable, and easy to dremel and drill.

I use 'weight clamps' or 'accessory clamps' to mount the Pelican boxes to the stanchions of RockShox Boxxer forks. Boxxer stanchions were 32mm/1.25" until 2010, when they went up to 35mm. The clamps are designed to mount lead weights on tube-frame race cars. They have holes for the .25" mounting bolt. The vendor for these particular clamps is Wehr's Machine Racing, here is the auction where you can buy them:

http://cgi.ebay.com/ebaymotors/ws/eBayI ... 0344689577

The entire assembly weighs only 4lbs, mounts securely, and offers the protection that soft-sided prisimatic cells need. The 1300nf will hold (20) a123 16ah Prisimatic cells (1kw), and the im2075 will hold (260 a123 Prisimatic 20ah cells (1.5kw). Since LiPo is 50% volume of the Life, you could fit twice as much capacity into the box; since it still weighs 85% of the LiFe, you would probably want to add more clamps for the extra weight.

Here is the post in the build thread that has lots of pictures. Note the (2) dead-simple but stealthy power switches, one has a resistor around it to pre-charge the controller:

http://www.endless-sphere.com/forums/vi ... 30#p470443

I did earlier builds with ammo boxes too, which are much heavier and more difficult to machine. I've also use larger clamps with .50" bolt holes, but they were much heavier so I would avoid them too.

With the weight over the front wheel, it always stays planted. When I turn my handlebars with one of these boxes, the battery mass is directly connected to them so steering input is instant. When I turn handlebars on a rear or triangle-mounted pack, that steering input has to translate through the frame to the battery mass, flexing and slowing responses. I first discovered this on my xtracycle, which has a 5304 and 30lbs of LiFe on the back, so steering inputs are more of a suggestion than an imperitive.

Suprisingly, it is pretty easy to lift the front end on jumps.

-JD
Member 117 of 26,000+

153v DUNE BUGGY © 164v Vectrix E-Moto © 72v Norco A-line/x5403 © 60v Specialized Enduro Comp/BMC © 72v x5tracycle © 48v TF IO/BMC © 36v Kepler FrictionDrive © Spot-Welding a123 © Pelican Front Packs © Vectrix Battery Replacement © MORE !!


Image大鸡巴 Motors
Knowledge is acquired through experience, everything else is just information - Albert Einstein
"Cheater?" I'm not competing, I'm Commuting!

User avatar
veloman   1 GW

1 GW
Posts: 3044
Joined: Sep 14 2009 1:06am
Location: Austin TX

Re: Cromotor vs 54xx - Fight!

Post by veloman » Dec 03 2011 3:12am

Oatnut: do you experience any downsides to have the battery up front there? I know it will make it feel odd if you ever want to rock the bike while standing to pedal hard, but that can be stopped if you teach yourself to not rock the bike - like a track sprinter.
Mush! Mush you electrons! Push harder!

User avatar
neptronix   100 GW

100 GW
Posts: 14168
Joined: Jun 15 2010 5:56pm
Location: California refugee living in Utah, USA
Contact:

Re: Cromotor vs 54xx - Fight!

Post by neptronix » Dec 03 2011 3:29am

4 pounds just to get the battery up there?
That's kinda bad dude... :shock: I see the advantage of the front shock buffering the abuse on the batteries though so that's good..

I do like my mid-mount.. falconEV bag = less than 1lb..
"Love and compassion are necessities, not luxuries. Without them, humanity cannot survive." - Dalai Lama

My first major build: 1.6kW 8T MAC motor on a Trek 4500.
The new all-arounder: Leafmotor 1500w @ 4kW on a Turner O2 full suspension.
The monster scooter: 20" eZee on a Cannondale Semi Recumbent.
Whipper-snapper: ? on a lightweight BikeE Semi Recumbent

User avatar
Kepler   1 GW

1 GW
Posts: 3239
Joined: Nov 08 2009 9:22pm
Location: Eastern suburbs Melbourne Australia

Re: Cromotor vs 54xx - Fight!

Post by Kepler » Dec 03 2011 6:50am

I really need to try a front battery mount setup. Makes sense to balance the bike weight with that battery position when using a hub motor. Biggest issue in my opinion is keeping the bike looking reasonably elegant. The Pelican case setup does the best job in keeping the build tidy I have seen so far.
Current Rides

Lightest true ebike on the planet: ON ROAD viewtopic.php?f=6&t=74269
eBoost on facebook: http://www.facebook.com/pages/Eboost/200306283342024/

User avatar
oatnet   10 MW

10 MW
Posts: 2341
Joined: Apr 26 2007 3:03pm
Location: SoCal, USA

Re: Cromotor vs 54xx - Fight!

Post by oatnet » Dec 03 2011 12:16pm

Kepler wrote:I really need to try a front battery mount setup. Makes sense to balance the bike weight with that battery position when using a hub motor. Biggest issue in my opinion is keeping the bike looking reasonably elegant. The Pelican case setup does the best job in keeping the build tidy I have seen so far.
So am guessing my early experimental models would NOT be on your xmas list? :oops: :lol: :lol: :lol: :lol: :lol: Here are a few pics to show you what you are "missing." :roll: :lol:

The initial "I'm just a beach blanket" model (below) opened my eyes to the potential, but the slop from the soft-mount added its own steering inputs. :shock:
Image


The "ammo can" model (below) was bulletproof, but heavy. People loved or hated the industrial look, no middle ground. I'm planning to re-mount this on my x5tracycle - it's front wheel needs as much weight as possible to offset the heavy x5304 at the end of the long whip made up of the xtracycle and frame.
Image
Member 117 of 26,000+

153v DUNE BUGGY © 164v Vectrix E-Moto © 72v Norco A-line/x5403 © 60v Specialized Enduro Comp/BMC © 72v x5tracycle © 48v TF IO/BMC © 36v Kepler FrictionDrive © Spot-Welding a123 © Pelican Front Packs © Vectrix Battery Replacement © MORE !!


Image大鸡巴 Motors
Knowledge is acquired through experience, everything else is just information - Albert Einstein
"Cheater?" I'm not competing, I'm Commuting!

User avatar
veloman   1 GW

1 GW
Posts: 3044
Joined: Sep 14 2009 1:06am
Location: Austin TX

Re: Cromotor vs 54xx - Fight!

Post by veloman » Dec 04 2011 5:49pm

Slap a fairing on the front of the battery box. Say it's to keep the battery dry in the rain :wink:
Mush! Mush you electrons! Push harder!

User avatar
oatnet   10 MW

10 MW
Posts: 2341
Joined: Apr 26 2007 3:03pm
Location: SoCal, USA

Re: Cromotor vs 54xx - Fight!

Post by oatnet » Dec 04 2011 6:52pm

veloman wrote:Slap a fairing on the front of the battery box. Say it's to keep the battery dry in the rain :wink:
I bought one of those zzipper mountain bike fairings a few years back, but didn't use it on the intended build, so I have in fact been considering using it on an A-Line build. :D Not sure it was built for these speeds though, and I have to see how unstealthy these builds turn out to be.

On another topic -

Jon Rob Holmes is a saint, guiding my dumb a$$ through the complexties of putting moped rims/tires on an ebike, PM'ing me to tell me he was OK with changing my rim size after the Cromotor went from 9.5kv to 13kv, and steering me away from impossible and dangerous configurations. I am so glad I have his expertise to guide me, I think if I had gone to a LBS they would have built exactly what I specified, which as it turns out is not what I wanted. Thanks JRH! :D :D :D

-JD
Member 117 of 26,000+

153v DUNE BUGGY © 164v Vectrix E-Moto © 72v Norco A-line/x5403 © 60v Specialized Enduro Comp/BMC © 72v x5tracycle © 48v TF IO/BMC © 36v Kepler FrictionDrive © Spot-Welding a123 © Pelican Front Packs © Vectrix Battery Replacement © MORE !!


Image大鸡巴 Motors
Knowledge is acquired through experience, everything else is just information - Albert Einstein
"Cheater?" I'm not competing, I'm Commuting!

markobetti   10 kW

10 kW
Posts: 620
Joined: Jul 17 2009 1:28am

Re: Cromotor vs 54xx - Fight!

Post by markobetti » Dec 05 2011 7:22am

thanks JON ROB HOLMES from me too , because i was the one to complicate oatnet situation
T H A N K S F O R B E I N G A N I C E G U Y

User avatar
gensem   100 kW

100 kW
Posts: 1461
Joined: Apr 01 2011 5:28pm
Location: Sao Paulo - Brazil

Re: Cromotor vs 54xx - Fight!

Post by gensem » Dec 05 2011 7:44am

+1 for John Holmes he is really nice guy, always willing to help.
Justin we really appreciate what you did!

Post Reply