Search found 165 matches

by SpeedEBikes
Jul 22 2015 11:57pm
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1185
Views: 189711

Re: Compact Field Oriented Controller, ASI + Grin, limited r

justin_le wrote:Hey guys so this has been quite a riot. A handful of the name suggestions here were already on our whiteboard, but quite a few are quite new and made the cut.
Whatever it's named it will still be a "nice FOC".
by SpeedEBikes
Jan 09 2015 9:21am
Forum: General Discussion
Topic: Anyone done business with UUMotor?
Replies: 12
Views: 2029

Re: Anyone done business with UUMotor?

Tony has responded requesting photos and offering to make it right sending replacements if needed. If they replace the motor with the wires damaged in shipping I'll be happy. It also is the one that had options for tire choice and was sent with an oversized knobby tire when a smooth street tire was ...
by SpeedEBikes
Jan 09 2015 6:42am
Forum: General Discussion
Topic: Anyone done business with UUMotor?
Replies: 12
Views: 2029

Re: Anyone done business with UUMotor?

How did things go with uumotor? Tony answers my inquiries quickly and has an oddball motor and wheel for my E Scooter. It took them until 3 days ago to fill and ship the order, but due to the premium shipping via DHL air I received the order yesterday. Initial impression was not good. Some of the i...
by SpeedEBikes
Dec 21 2014 12:01am
Forum: General Discussion
Topic: Anyone done business with UUMotor?
Replies: 12
Views: 2029

Re: Anyone done business with UUMotor?

Some of those tiny wheel scooter hub motors could be fun to play with. Stuff like powering up a garden cart, or a lazy boy chair. I've been building motorized buckets, such as this one http://endless-sphere.com/forums/viewtopic.php?f=12&t=65345 I got a bit carried away in the pursuit of performance...
by SpeedEBikes
Dec 18 2014 8:06pm
Forum: General Discussion
Topic: Anyone done business with UUMotor?
Replies: 12
Views: 2029

Re: Anyone done business with UUMotor?

Against my better judgement I went ahead and did a sample order of 4 different motors. The prices are decent but everything else about the website and their approach to sales seems unprofessional and tacky. But they offer a greater variety of motors than I have seen from other vendors and in particu...
by SpeedEBikes
Dec 16 2014 2:08am
Forum: General Discussion
Topic: Anyone done business with UUMotor?
Replies: 12
Views: 2029

Re: Anyone done business with UUMotor?

UUMotor has answered my last email confirming the two different versions of the motor use the same magnets and windings but still did not say what if anything is actually different about them.
by SpeedEBikes
Dec 15 2014 1:55am
Forum: General Discussion
Topic: What can I use for a load to test a power supply?
Replies: 5
Views: 631

Re: What can I use for a load to test a power supply?

Many things will run on either AC or DC. Incandescent light bulbs are essentially just resistors. They actually run better on DC as the steady current doesn't stress the filament as much. Compact flourescents typically work too. And many other electronic devices. And many motors too. Many of the dev...
by SpeedEBikes
Dec 14 2014 1:57pm
Forum: General Discussion
Topic: Anyone done business with UUMotor?
Replies: 12
Views: 2029

Re: Anyone done business with UUMotor?

A voltage rating could avoid insulation breakdown of the wiring or protect voltage sensitive components such as an internal capacitor in a single phase ac motor. Or it could serve as an rpm limit. But in this case I'd expect such limits to be far higher. For a typical ebike motor limited by overheat...
by SpeedEBikes
Dec 13 2014 6:10pm
Forum: General Discussion
Topic: Anyone done business with UUMotor?
Replies: 12
Views: 2029

Re: Anyone done business with UUMotor?

They have separate pages for motors, controllers and kits, so I'm assuming the motor pages are for motors without a controller. Almost every motor they sell comes in multiple power versions but they only give a single performance chart per motor, not for each version. The motor I enquired about was ...
by SpeedEBikes
Dec 13 2014 2:56pm
Forum: General Discussion
Topic: What can I use for a load to test a power supply?
Replies: 5
Views: 631

Re: What can I use for a load to test a power supply?

amperage = voltage / resistance

A fixed resistance load will only pull about 1/4 the current at 33 volts as it does at 120.

I'd be surprised if the AC switch would fail on that much lower a DC voltage.
by SpeedEBikes
Dec 13 2014 2:02pm
Forum: General Discussion
Topic: Motor quieter at 120% throttle - Why?
Replies: 7
Views: 640

Re: Motor quieter at 120% throttle - Why?

How does this controller go beyond 100% throttle? Does it boost the voltage? If so, do you know how efficiently?
by SpeedEBikes
Dec 13 2014 1:53pm
Forum: General Discussion
Topic: Anyone done business with UUMotor?
Replies: 12
Views: 2029

Anyone done business with UUMotor?

I'm interested in some of the BLDC hub motors offered at http://www.uumotor.com/store. Each of their motors is offered in multiple versions listed by increasing voltage and increasing price. I sent them an enquiry asking what was different between two versions of a motor to give them different volta...
by SpeedEBikes
Dec 12 2014 2:32am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Badsey Cruiser rebuid/modification
Replies: 7
Views: 1013

Re: Badsey Cruiser rebuid/modification

The wheels and tires are go kart parts. The body work they did themselves in fiberglass. Most of the other parts, motor, controller, batteries, etc. are off the shelf and if you can't find an exact replacement it shouldn't be too hard to find a decent substitute. Most of the aluminum and steel frame...
by SpeedEBikes
Dec 12 2014 1:39am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: My mobility scooter
Replies: 3
Views: 1388

Re: My mobility scooter

Icewrench, the disc brake side is laced single cross and the other side is zero cross. Wasn't planned just happened to be the only way I could lace it up reasonably centered with the spoke lengths I happened to have on hand. The scooter reponds great to body english. Leaning helps keep the wheels pl...
by SpeedEBikes
Dec 11 2014 10:25pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: My mobility scooter
Replies: 3
Views: 1388

My mobility scooter

I'm losing my ability to walk and wanted a scooter I could ride about the house and around town. Here's what I came up with. BS3 frame small.jpg BS3small.JPG Going for more welding gas bs3 gas.JPG motor, MAC 6T w/ 12 fet Infineon controller bought from cell_man/EM3EV with 16x3" tire battery, Turnigy...
by SpeedEBikes
May 03 2013 11:36am
Forum: E-Bike Technical
Topic: GEAR MATERIAL
Replies: 18
Views: 1724

Re: GEAR MATERIAL

I've got a cute q100 (ananda) geared hub motor and the gears are starting to fail. Searching these forums and the rest of the net it appears that replacement gears aren't available and many people have stripped gears on these motors. I was considering trying to get a replacement set of gears made fr...
by SpeedEBikes
Jan 11 2011 8:54pm
Forum: Battery Technology
Topic: CellLog 8S battery monitor and logger - any reviews?
Replies: 160
Views: 27690

Re: CellLog 8S battery monitor and logger - any reviews?

El Steak, The cellog's most negative input pin is internally directly connected to the negative alarm ouput pin. By connecting the negative alarm output to the negative terminal of the battery you will fry something if you ever misalign the balance tap connector when attaching it to the celllog. I t...
by SpeedEBikes
Jan 09 2011 12:28am
Forum: E-Bike Build Threads / Photos & Video
Topic: Your Creation's Before & After Pics
Replies: 1783
Views: 563695

Re: Your Creation's Before & After Pics

Bctriker, beautiful looking rig. Have you used it much? I'm curious as to how well it is working out. I had considered doing something similar but have yet to do so. My first concern was that with a trike that can't lean into corners a single wheeled trailer like a Bob would contribute to the tippin...
by SpeedEBikes
Jan 04 2011 7:59pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Adrian's 2nd Build - Giant AC Full Suspension
Replies: 115
Views: 27776

Re: Adrian's 2nd Build - Giant AC Full Suspension

Ok, here's a new shot of my bike. giant_ac1.JPG A full suspension Giant AC1 with a Crystalyte 5305 dd bldc hub motor using a Methods 100 volt 200 amp controller programmed to an 85 amp limit and nominal 88.8 volt 15 ah lipo battery. Has a lockable battery cage, rear cargo rack, heavy duty kickstand,...
by SpeedEBikes
Jan 02 2011 2:01am
Forum: E-Bike Build Threads / Photos & Video
Topic: Adrian's 2nd Build - Giant AC Full Suspension
Replies: 115
Views: 27776

Re: Adrian's 2nd Build - Giant AC Full Suspension

I've think I've got some photos somewhere on a back up hard drive but have unfortunately lost track of where they are. Probably easier to just snap some new ones which would also show the latest changes. Although the bike is rather filthy at the moment... One way or another I should be able to post ...
by SpeedEBikes
Dec 30 2010 10:14pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Adrian's 2nd Build - Giant AC Full Suspension
Replies: 115
Views: 27776

Re: Adrian's 2nd Build - Giant AC Full Suspension

Adrian, you got a good buy on that frame. I've got a Giant AC1 that I've abused the hell out of and the frame has been bullet proof. I found the stock suspension too plush for the higher speeds and weight of my e-bike and put in much stiffer springs and heavier oil to stop the diving action during h...
by SpeedEBikes
Dec 29 2010 8:37pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Your Creation's Before & After Pics
Replies: 1783
Views: 563695

Re: Your Creation's Before & After Pics

deVries, I did take enough pictures for a build thread. But unfortunately I put most of them on a laptop that was stolen soon afterwards. But the process was very low tech, cut up frames with angle grinder and cutoff disc, miter & shape with angle grinder and grinding disc, strip metal bare with ang...
by SpeedEBikes
Dec 29 2010 5:05pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Your Creation's Before & After Pics
Replies: 1783
Views: 563695

Re: Your Creation's Before & After Pics

longbike1.jpg Before: a couple of junked bicycles, a men's 26" mtb and a child's 20" mtb. longtail_complete.JPG After: an extended wheel base cargo bike inspired by the Xtracycle. Features: A dual speed crystalyte 407/409 in 20" rear wheel yielding decent torque for heavy loads. Battery 16s x 2p of...
by SpeedEBikes
Jun 07 2010 11:43pm
Forum: E-Bike Technical
Topic: 2807 remove motor side cover with puller
Replies: 9
Views: 661

Re: 2807 remove motor side cover with puller

My 9c was a PITA to open. I didn't have much luck prying with the typical razor blades, chisels and sharpened screwdrivers that usually work for me. I screwed an old dead freewheel mostly on and then hooked a gear puller over it. I really had to crank the puller before the cover popped. but it event...
by SpeedEBikes
May 25 2010 11:40pm
Forum: Battery Technology
Topic: Zippy Flightmax / Turnigy lipo testing
Replies: 1417
Views: 147638

Re: Zippy Flightmax / Turnigy lipo testing

$46.81 6S 5000mAh 20C http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=8582 Dropping like a rock. The "everybody" price is now down to $50 -methods But this appears to be the better deal http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=8586 and for frequent buyer...