Search found 176 matches

by maurtis
Feb 26 2014 4:27pm
Forum: E-Bike General Discussion
Topic: overclocking 1000W 48v direct hub on 24S?
Replies: 17
Views: 1460

Re: overclocking 1000W 48v direct hub on 24S?

I run 24s on my 1000W GM901 motor (same as the Yescom motor) with the Lyen 12fet 4110 controller programmed to 45 battery amps and 100 phase amps. I am thinking about lowering the phase amps a bit, though, since the throttle is twitchier than I would like when cruising in the mid-upper 30s. With tha...
by maurtis
Feb 21 2014 3:01pm
Forum: E-Bike General Discussion
Topic: Yescom/Xcesseries Rolling Resistance
Replies: 5
Views: 523

Re: Yescom/Xcesseries Rolling Resistance

I have the Golden Motor GM901, which should be identical to the Yescom motor, and it has very little drag. I heard people talking about cogging and resistance with DD motors, but I notice very little with my motor. I installed a 9C 2807 on my wife's bike and I find there is a bit more resistance on ...
by maurtis
Feb 07 2014 11:18am
Forum: E-Bike General Discussion
Topic: Building a beach cruiser/ board track bike
Replies: 101
Views: 14821

Re: Building a beach cruiser/ board track bike

After researching all day I've decided to get the 60v 15ah Ping battery... However now I'm stuck on which controller to get... @dogman said I would kill that ping pack with the 40A Infineon... Is that true even if I'm only running the battery pack at 70-80% power??? The amp rating on the controller...
by maurtis
Feb 05 2014 6:05pm
Forum: E-Bike General Discussion
Topic: Building a beach cruiser/ board track bike
Replies: 101
Views: 14821

Re: Building a beach cruiser/ board track bike

If you are at all leery about batteries, I would stay away from RC lipo packs until you have done a LOT of research and soul searching. I went from SLA to lipo and glad that I did, but these little bricks can be very touchy. They are not at all plug and play, set it and forget it. You do that, you b...
by maurtis
Feb 05 2014 10:42am
Forum: E-Bike General Discussion
Topic: Building a beach cruiser/ board track bike
Replies: 101
Views: 14821

Re: Building a beach cruiser/ board track bike

BTW, that "old bike" with the China Girl is a Walmart 32" Genesis Super Cruiser with the top bar welded on for the gas tank support. I cannot believe he was actually able to stuff a China Girl in that small opening. While I think the style is terrible, kudos to the builder for making ...
by maurtis
Feb 04 2014 4:21pm
Forum: E-Bike General Discussion
Topic: Building a beach cruiser/ board track bike
Replies: 101
Views: 14821

Re: Building a beach cruiser/ board track bike

Out of those two, I would go with the em3ev pack since it supports a 3C discharge rate, so over 48A. Whereas the ping pack peaks at 30A. But in order to get 30 miles out of a 15 - 16AH pack you are likely going to have to cruise closer to 20 MPH, or have tall gears and be able to pedal to help. High...
by maurtis
Feb 04 2014 10:01am
Forum: E-Bike General Discussion
Topic: Building a beach cruiser/ board track bike
Replies: 101
Views: 14821

Re: Building a beach cruiser/ board track bike

Good luck! I am usually leery of aluminum frames for motorized bikes, but I know people use them successfully for electrics so you will likely be fine. We experience a lot less vibration than gas bikes do. That is a great looking bike, btw! One thing you are going to want to take a hard look at is h...
by maurtis
Jan 02 2014 5:04pm
Forum: E-Bike General Discussion
Topic: Show Us Your Homemade Battery Housing
Replies: 590
Views: 186100

Re: Show Us Your Homemade Battery Housing

pretty sweet looking setup there, maurtis. How well does it stop with no rear brake? Thanks! The front cantilevers and rear regen stop the bike ok, but you really have to want to stop. Rear calipers will definitely help. I ordered a set of Tektro C326 side pulls, but the reach was a little too shor...
by maurtis
Jan 02 2014 3:19pm
Forum: E-Bike General Discussion
Topic: Show Us Your Homemade Battery Housing
Replies: 590
Views: 186100

Re: Show Us Your Homemade Battery Housing

Wow, you guys do some really good work! When tasked with making a clean setup for my wife's bike, I went with leather panniers with wood sides. The wood sides allowed me to build a rigid frame with the batteries mounted to a shelf that can slide out for charging, and also was easy to make with no se...
by maurtis
Jan 02 2014 2:52pm
Forum: E-Bike General Discussion
Topic: Just got my ebike kit from yescomusa what battery?
Replies: 203
Views: 18527

Re: Just got my ebike kit from yescomusa what battery?

How well will a fast wind motor in a 26" wheel hold up on dirt trails? Is the terrain you are looking at flat-ish hike-and-bike trails, or hilly stuff? I have that motor running 24s (and love it), but only run on the street and it is pretty flat around here.
by maurtis
Dec 27 2013 3:09pm
Forum: E-Bike General Discussion
Topic: Electric cruiser bikes
Replies: 31
Views: 13798

Re: Electric cruiser bikes

I finished my wife's cruiser a little bit ago. She insisted that I use her Huffy Panama Jack and that I keep it clean, so I built panniers out of cedar and leather to house the batteries and controller, with 4 "silent" CPU fans in the controller bag for airflow. I used some cantilever brak...
by maurtis
Dec 19 2013 12:57pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Wife Hopper beach cruiser
Replies: 4
Views: 1428

Re: Wife Hopper beach cruiser

Thanks Paul! BTW, here is a picture of the batteries snug inside the bag, before making the serial and parallel harnesses:
Battery_bag_inside_scaled.jpg
Battery_bag_inside_scaled.jpg (210.39 KiB) Viewed 1364 times
by maurtis
Dec 19 2013 11:08am
Forum: E-Bike Build Threads / Photos & Video
Topic: Wife Hopper beach cruiser
Replies: 4
Views: 1428

Re: Wife Hopper beach cruiser

The bulk of the build time was spent on making the saddlebags. While an easy, straightforward procedure, my lack of tools and wanting to get them right for my wife made me take extra time and care. I started with an 8 foot cedar plank ($5 from Home Depot), rough cut into 4" x 12" sections....
by maurtis
Dec 19 2013 10:49am
Forum: E-Bike Build Threads / Photos & Video
Topic: Wife Hopper beach cruiser
Replies: 4
Views: 1428

Re: Wife Hopper beach cruiser

The bike rides like a dream and pulls nicely. My wife is at a doctor's appointment this morning, so looking forward to us riding together over lunch! The neighborhood speed limit is 25 MPH, so my goal was a 30 MPH eBike that did not require pedaling and something in the 14s - 15s range (lipo, since ...
by maurtis
Dec 19 2013 10:38am
Forum: E-Bike Build Threads / Photos & Video
Topic: Wife Hopper beach cruiser
Replies: 4
Views: 1428

Wife Hopper beach cruiser

After sampling the sheer joy of my 24s GM 901 hub motor build, my wife decided she needed one. Okay, I actually decided she needed one. Due to medical concerns, it is a chore for her to pedal so her bike was sitting unused in the garage. I really wanted to use a better quality frame, but she insiste...
by maurtis
Nov 25 2013 5:00pm
Forum: E-Bike Technical
Topic: Cooling fans wired serially?
Replies: 7
Views: 1111

Re: Cooling fans wired serially?

I was planning on making them similar to these I saw online, with wood sides due to the ease of construction and unique look (my wife is very fashion conscious, so wanting to make the bike as clean as possible): Pocket-Pannier-ErinBerzelPhotography-6319_1024x1024.jpg So the plan is to make the bags ...
by maurtis
Nov 25 2013 1:15am
Forum: E-Bike Technical
Topic: Cooling fans wired serially?
Replies: 7
Views: 1111

Re: Cooling fans wired serially?

Those are neat looking converters, I might have to go with 2 of them should things not work out with wiring them serially. Tonight I tested one of the fans at 4s and it ran without any problems. I let it run for an hour and no magic smoke or funny smells. So I am going to try running the 4 fans in s...
by maurtis
Nov 24 2013 12:37pm
Forum: E-Bike Technical
Topic: Cooling fans wired serially?
Replies: 7
Views: 1111

Re: Cooling fans wired serially?

63/4=15.75V each. Might burn 12v fans up. Would using those cheap $2 12v voltage regulators work? One wired with each fan? http://www.radioshack.com/product/index.jsp?productId=2062600# I read online that overclockers have run the larger 80mm fans at 17v 24/7 for extended periods, but not sure how ...
by maurtis
Nov 24 2013 12:30am
Forum: E-Bike Technical
Topic: Cooling fans wired serially?
Replies: 7
Views: 1111

Cooling fans wired serially?

Still working on my wife's bike, and I am looking to put her controller in a small, custom leather saddlebag (and her batteries in a saddlebag on the other side). These will be made by me, my first leather project! Since the controller will be enclosed, I planned on using four 40mm computer fans, tw...
by maurtis
Oct 19 2013 9:38am
Forum: E-Bike General Discussion
Topic: controller that can use 24v and 36v
Replies: 9
Views: 862

Re: controller that can use 24v and 36v

Are you talking about using two different batteries, a 24V and 36V, and switching between the two? Or using one 36V battery, but with the option of using less voltage? If you are looking to use just one battery, it sounds like you should get a controller with one of those three speed switches, or me...
by maurtis
Oct 08 2013 9:59am
Forum: E-Bike General Discussion
Topic: need some help i have a 500 budget
Replies: 36
Views: 2392

Re: need some help i have a 500 budget

I guess pictures would help... He told you it was a Magic Pie and it turns out to be a bitty little 250W geared hub? That is a huge difference. If the guy did indeed misrepresent the bike, he is no friend and quite an a-hole. The good news is that the EVG is a fine frame to build off of, and I would...
by maurtis
Oct 07 2013 9:01pm
Forum: E-Bike General Discussion
Topic: need some help i have a 500 budget
Replies: 36
Views: 2392

Re: need some help i have a 500 budget

No it rides but no BMS is dangerous and also 5ah isn't gonna get me that far. I have a 8 mile ride to work one way this thing won't make that Unless the guy told you it had a BMS, I do not think he was trying to screw you. Like Dogman said, he does not run a BMS with lipo, neither do I on my two li...
by maurtis
Oct 02 2013 4:13pm
Forum: E-Bike General Discussion
Topic: Remaining noob questions after reading all noob guides
Replies: 14
Views: 1385

Re: Remaining noob questions after reading all noob guides

1) The controller does not know the C rate of your batteries and tries to take what it needs. In this case, would be exceeding the max continuous C rating by a small amount. So I think that means the batteries would provide the power, but at the cost of greatly reducing their lifespan? Not sure, but...
by maurtis
Oct 01 2013 8:09pm
Forum: E-Bike Technical
Topic: Reversing 24v 450w MY1018-1 question.
Replies: 4
Views: 645

Re: Reversing 24v 450w MY1018-1 question.

As already said, switch the wires going to the motor from the controller and you are set. Pretty sure they are neutrally timed. I reversed one on my Mongoose with no problems.
by maurtis
Sep 30 2013 3:43pm
Forum: E-Bike General Discussion
Topic: M- wave kickstand
Replies: 19
Views: 5492

Re: M- wave kickstand

I've owned this one and I would say that the M-Wave adjustable one is twice as good. The adjustments are much easier and don't require tools on the M-Wave. I had to super glue the nuts on the ebikekit one or else the legs always ended up a different length. Another major benefit of the M-Wave is th...