Search found 571 matches

by GrayKard
Dec 29, 2012 11:22 pm
Forum: E-Bike Technical
Topic: how to open this freewheel?
Replies: 13
Views: 753

Re: how to open this freewheel?

If that freewheel is like a couple I just opened recently then removing much material is not an option. The interior is stepped like the exterior so it has a thin wall for it's entire length. If what you are trying to do is make it small enough to fit the 11t further in the freewheel body it's not g...
by GrayKard
Dec 29, 2012 9:04 pm
Forum: E-Bike Technical
Topic: Rear bike hub idea.
Replies: 10
Views: 550

Re: Rear bike hub idea.

What about the Stator? It needs to be fixed in the middle of the axle, will it have threads and bolts holding it in place?

Gary
by GrayKard
Dec 18, 2012 9:40 pm
Forum: E-Bike General Discussion
Topic: best type of motor set up?
Replies: 3
Views: 216

Re: best type of motor set up?

IMHO I think all current systems are a compromise. None of them do best in all of your categories.

What I would really like to see is a hub motor that can do like 2kw continuous and has a built in transmission of some kind to get multiple gears.

Gary
by GrayKard
Dec 18, 2012 8:52 pm
Forum: General Discussion
Topic: PICKUP TRUCK YAHOOS
Replies: 22
Views: 919

Re: PICKUP TRUCK YAHOOS

get the plate, look up address , go at night , slash tire, just one every time.,........ :mrgreen: :mrgreen: I do step one and two, then drive by the house a few times until the truck owner sees me and knows I know where he lives... Also if you can follow them for a while they can get scared, I alm...
by GrayKard
Dec 16, 2012 3:57 pm
Forum: E-Bike General Discussion
Topic: Hi All
Replies: 105
Views: 5144

Re: Hi All

Unless you are doing a lot of big hills or a LOT of stop and go or are building a very high powered rig, I would just forget about regen. It really isn't that useful for what you get back in energy vs. the added complexity. It is effective as a break IF you are regularly riding in conditions that m...
by GrayKard
Dec 16, 2012 2:50 pm
Forum: E-Bike General Discussion
Topic: HELP NEEDED LONGSTAR scooter
Replies: 21
Views: 1106

Re: HELP NEEDED LONGSTAR E-BIKE

I would say you are correct about the components so far. If the black wire and the red with white trace go to opposite ends of the battery bank (the batteries should be in series) then that would be where you plug in a 48 volt lead acid charger. One note: The battery is 12 volt 20 amp hours , not am...
by GrayKard
Dec 14, 2012 2:08 am
Forum: E-Bike Technical
Topic: e-Brake switch: Can it simultaneously activate brake lights?
Replies: 9
Views: 2849

Re: e-Brake switch: Can it simultaneously activate brake lig

Couple of questions. Did you install that brake switch T in the front brake line? If so did you change the front brakes from your Hayes to the Maguras? Reason I ask is because those switches are not compatible with Dot 3 or 4 fluid. It will cause them to stick. The details are in this thread: Regen ...
by GrayKard
Dec 13, 2012 9:42 pm
Forum: E-Bike Technical
Topic: Bafang motor
Replies: 7
Views: 549

Re: Bafang motor

The main advantage of the CST motor, with the cassette, over the BPM motor (the same motor but with a freewheel thread), is that the cassette allows a wider gear range. The tallest gear on a freewheel is 12T, and then only on one type that may not be the best in terms of quality. Most normal freewh...
by GrayKard
Dec 13, 2012 9:30 pm
Forum: E-Bike Technical
Topic: Speed signal comparison? (traction control)
Replies: 21
Views: 674

Re: Speed signal comparison? (traction control)

rocwandrer wrote:
gwhy! wrote:so you can use the hall sensor signal from that motor for the rear wheel speed.

front wheel you mean? :D
Q100 is a geared motor with internal clutch so as soon as you let off the throttle you will lose hall sensor signals.
by GrayKard
Dec 11, 2012 9:37 pm
Forum: E-Bike General Discussion
Topic: Does it charge whilst you ride?
Replies: 20
Views: 816

Re: Does it charge whilst you ride?

Last time I got asked that question I tried a new answer. I just said yes it would work but it's like pedaling an exercise bike that's on steroids. They then understood it takes a lot of work...

Gary
by GrayKard
Dec 04, 2012 10:09 pm
Forum: General Discussion
Topic: Your Power at 20mph?
Replies: 19
Views: 830

Re: Your Power at 20mph?

Here's a log I kept for a while before I got bored. I was shooting for 20mph average speed to stretch my limited battery power all the way home. Might be some useful info in there for ya.
Ebike GM.xls
(13 KiB) Downloaded 36 times
Gary
by GrayKard
Dec 02, 2012 9:51 pm
Forum: E-Bike Technical
Topic: Shimano Deore XT brake lever switch with Hall effect sensor
Replies: 39
Views: 6395

Re: Shimano Deore XT brake lever switch with Hall effect sen

I AM A NEWBIE,but would'nt it be easier to just lay off the throttle when braking???not sure I understand what this is for??? There are several reasons why this might be a good idea for a bike. 1. Will shut off cruise control when braking. 2. Will shut off motor during panic stop when you might not...
by GrayKard
Nov 22, 2012 8:39 pm
Forum: E-Bike General Discussion
Topic: Best beam shape for LED lights???
Replies: 14
Views: 677

Re: Best beam shape for LED lights???

I'm currently using a pair of lights like these: HK055-4h.jpg One is round for a high beam and the other does a line for low beams. The low beam works ok for lower speeds but not so good above 30. Right now I have it set up where one or the other is lit but I may try it with both on for high to get ...
by GrayKard
Nov 22, 2012 1:51 am
Forum: E-Bike General Discussion
Topic: pelican 1300 filled with lipo
Replies: 75
Views: 7150

Re: pelican 1300 filled with lipo

Deja vu! I was at my local sporting goods store today (http://www.dickssportinggoods.com/family/index.jsp?categoryId=15847826) and I looked at that very case! I can't compare it to a pelican brand as I've never seen and inspected one, but from what I've read, the pelican case is pretty beefy allowi...
by GrayKard
Nov 22, 2012 1:35 am
Forum: E-Bike General Discussion
Topic: NEWBIE IN NEED OF ADVICE FOR FIRST BUILD
Replies: 18
Views: 757

Re: NEWBIE IN NEED OF ADVICE FOR FIRST BUILD

Here's a very long thread on the GNG: GNG, 1000W 48V BB-drive, $400

There are a couple more in the ebike non-hub section with that one.

Gary
by GrayKard
Nov 21, 2012 11:15 pm
Forum: E-Bike General Discussion
Topic: pelican 1300 filled with lipo
Replies: 75
Views: 7150

Re: pelican 1300 filled with lipo

Here's a case that's similar to the storm version of the pelicans. It's an SKB brand case that I purchased here: http://www.casesbysource.com/product/skb-waterproof-case-empty-3i-0907-6b-e SKB case 1.jpg I'm just tossing this out there because you may find the size you need in this other brand. Here...
by GrayKard
Nov 21, 2012 10:00 pm
Forum: E-Bike General Discussion
Topic: Is this a deal or what ......
Replies: 54
Views: 4186

Re: More Aliexpress exaggeration?

A buddy is looking at getting an electric bike and asked what I thought of these in aliexpress: http://www.aliexpress.com/item/HPC-F1-TORNADO-ELECTRIC-26-BIKE-BICYCLE-5000W-POWER-SYSTEM-21-FRAME/690213374.html I said that it looked massively overstated in terms of power and range- 5kW out of that h...
by GrayKard
Nov 16, 2012 12:45 am
Forum: E-Bike Technical
Topic: Convert a double-motorized wheel electrical bike
Replies: 56
Views: 3416

Re: Mount a hydraulic brake to my Electric bike

As we all know, hydraulic brakes have a better braking performance than mechanical brake.Too many E-bike fans would like to use hydraulic brake replace of the normal brake. Usually we met some troubles in the process of their hydraulic brake conversion with papamotor kits. 1 Hydraulic brakes can’t ...
by GrayKard
Nov 13, 2012 11:04 pm
Forum: E-Bike Technical
Topic: Lipo maths. Do i have the right idea?
Replies: 45
Views: 1386

Re: Lipo maths. Do i have the right idea?

NeilP wrote:This is what I imagine you have, is that how it is setup basically?
What I imagine.jpg
I think he has a Bafang BPM hub motor.
by GrayKard
Nov 13, 2012 10:45 pm
Forum: E-Bike Technical
Topic: 72v relays for lights/horn
Replies: 4
Views: 267

Re: 72v relays for lights/horn

I need some 72v relays to power my lights/horn... (the handle bar switches are too small) but can't find any... anyone have a link ? (24s so I'm 89v hot off the charger) Relay? Are you needing to switch 72 volts on and off from the handle bar? Or do you need to convert the 72 volts to 12 volts that...
by GrayKard
Nov 06, 2012 8:55 pm
Forum: General Discussion
Topic: Hit car door in NYC, guy blamed me and wanted to fight
Replies: 33
Views: 1640

Re: Hit car door in NYC, guy blamed me and wanted to fight

Many of us who've been thrown from our bikes at speed wind up with one of these - photo.GIF Do you have a noticeable bump on top of the affected shoulder/clavical? My Ortho told me practically every pro Hockey player has one on each shoulder. There are surgical solutions but since I don't model or ...
by GrayKard
Nov 04, 2012 11:11 pm
Forum: E-Bike Technical
Topic: Regeneration questions
Replies: 18
Views: 786

Re: Regeneration questions

With the regeneration on the disc brakes are not even close to the temperature they where getting.Works really nice and its kinda super emergency braking if you have some speed. The only bad thing with this technology in my opinion is that you have to restrict the (electronic braking , regeneration...
by GrayKard
Nov 04, 2012 10:48 pm
Forum: E-Bike Technical
Topic: Did my first wheel build
Replies: 18
Views: 1093

Re: Did my first wheel build

I too just did my first wheel build. I did a BPM CST into an older mtb rim. I ordered spokes for single cross with 1mm long for one side and 1mm short for the other for dishing. First attempt I alternated spoke head direction but since it's a rim brake setup this did not dish it enough so I changed ...
by GrayKard
Nov 04, 2012 10:03 pm
Forum: E-Bike Technical
Topic: Front Wheel Question
Replies: 7
Views: 316

Re: Front Wheel Question

I've been running a Cyclops on a WTB 21-559/26mm wide rim for a while now without trouble. I just make sure it's seated right and stays at least 30psi or more so it stays put. It is a double wall rim but if your single wall rim is strong I don't think there should be a problem.

Gary
by GrayKard
Nov 01, 2012 6:39 pm
Forum: E-Bike General Discussion
Topic: Rear suspension and rear hub question.
Replies: 71
Views: 3622

Re: Rear suspension and rear hub question.

Chalo wrote:Bicycles are virtuous machines; getting on their terms makes you a better person in all sorts of ways. E-bikes become more virtuous to the degree that they emulate bicycles.
Do you really believe this drivel?