Search found 84 matches

by SHARKBITEATTACK
Oct 02 2019 1:21pm
Forum: E-Bike Non-hub Motor Drives
Topic: 2 speed (could be auto) gearbox
Replies: 39
Views: 6535

Re: 2 speed (could be auto) gearbox

wineboyrider wrote:
Sep 30 2019 7:56am
SHARKBITEATTACK wrote:
Sep 30 2019 3:17am
Did anything ever come of this? I've been obsessing about 2 speed gearboxes lately and remember this concept from years ago. I recall there was another member that did this as well but I can't seem to find the thread.
THUD
He had one at the Deathrace.
Is there a link to a thread?
by SHARKBITEATTACK
Sep 30 2019 3:17am
Forum: E-Bike Non-hub Motor Drives
Topic: 2 speed (could be auto) gearbox
Replies: 39
Views: 6535

Re: 2 speed (could be auto) gearbox

Did anything ever come of this? I've been obsessing about 2 speed gearboxes lately and remember this concept from years ago. I recall there was another member that did this as well but I can't seem to find the thread.
by SHARKBITEATTACK
Oct 24 2015 2:10am
Forum: Motor Technology
Topic: Asynchronous motors - is induction the new future?
Replies: 76
Views: 18680

Re: Asynchronous motors - is induction the new future?

I have yet to read through this whole thread, but I'm so excited after just discovering this that I have to post now! I have been dreaming of an induction hub motor since I got into ebikes and have spent many hours contemplating on whether such a device would work as a hub motor or outrunner without...
by SHARKBITEATTACK
Oct 21 2015 4:42am
Forum: E-Bike Build Threads / Photos & Video
Topic: Modified (chopped) Ebike thread
Replies: 19
Views: 5541

Re: Modified (chopped) Ebike thread

Not sure whos this is but its been saved on my comp for a while. Looks like it might of been a Giant DH frame?
by SHARKBITEATTACK
Dec 02 2013 1:32pm
Forum: General Discussion
Topic: Ryobi Lithium batteries Good for ebike?
Replies: 15
Views: 2553

Re: Ryobi Lithium batteries Good for ebike?

the big charger is not worth getting its just a single charger, Once one pack is done, it will charge the next, so it does not charge all packs at the same time. These batteries are not worth getting imo unless they are less than $30 per item, its much cheaper to get a small lipo pack For the initi...
by SHARKBITEATTACK
Dec 01 2013 12:37pm
Forum: General Discussion
Topic: Ryobi Lithium batteries Good for ebike?
Replies: 15
Views: 2553

Re: Ryobi Lithium batteries Good for ebike?

ok thanks for all the input guys. It seems like they could work but it would be alot of work to make a good system. I know many people have used bosch fatpacks and other tool batteries so this made me wonder whan I saw lithiums on sale. I wound up buying 8 of these but it looks like Im just gonna re...
by SHARKBITEATTACK
Nov 29 2013 9:19pm
Forum: General Discussion
Topic: Ryobi Lithium batteries Good for ebike?
Replies: 15
Views: 2553

Ryobi Lithium Tool Battery Cells?

Anyone know what kind of cells might be in these? I stocked up on them
by SHARKBITEATTACK
Nov 29 2013 6:26pm
Forum: General Discussion
Topic: Ryobi Lithium batteries Good for ebike?
Replies: 15
Views: 2553

Re: Ryobi Lithium batteries Good for ebike?

wheelbender6 wrote:If my calculations are correct, and they rarely are, you would need four of those batteries for 36v 8ah. Individual batteries would be wired in series to form pairs to double the voltage. The pairs would be wired in parallel to double the amp hours?
Yes you are correct.
by SHARKBITEATTACK
Nov 29 2013 2:09pm
Forum: General Discussion
Topic: Ryobi Lithium batteries Good for ebike?
Replies: 15
Views: 2553

Ryobi Lithium batteries Good for ebike?

Home Depot has a sale today. 2 of there 18v 4ah Lithium+ batteries for $100. Anyone have experience with these?
Image
by SHARKBITEATTACK
Oct 25 2013 7:01pm
Forum: E-Bike General Discussion
Topic: What is your reason of building ebike?
Replies: 38
Views: 3219

Re: What is your reason of building ebike?

Biking is one of my favorite activities. Getting out into nature alone and exploring. The ebike will allow me to go out past my 15 mi radius comfort zone. Also the second reason is that I'd eventually like a fast ebike that could compare to a low powered motorcycle/dirtbike. When I was younger my pa...
by SHARKBITEATTACK
Oct 24 2013 10:08pm
Forum: Battery Technology
Topic: What battery to buy and where from
Replies: 7
Views: 960

Re: What battery to buy and where from

Chopper trike that will carry 2 passengers?!? Where's the pics? But yea I agree, headways or a123 or something of equivalent quality. Try bms battery and emission free (cellman)
by SHARKBITEATTACK
Oct 24 2013 9:58pm
Forum: E-Bike Technical
Topic: Best rear suspension system for a rear hub motor?
Replies: 25
Views: 3589

Re: Best rear suspension system for a rear hub motor?

I would think the good ol single pivot would be best, just like a motorcycle uses. I could be wrong but I thought all those other designs were made just to take down pedal bob
by SHARKBITEATTACK
Oct 20 2013 11:52am
Forum: E-Bike Technical
Topic: Why can't you run 2 brushless motors off 1 controller?
Replies: 10
Views: 2037

Re: Why can't you run 2 brushless motors off 1 controller?

Ok I was actually theorizing a dual motor offroad rig and would want both motors to stay locked at the same rpm. This could be useful when going through slippery or loose terrain and trying to maintain speed when 1 of the wheels loses traction. I thought they would work in a similar fashion to synch...
by SHARKBITEATTACK
Oct 19 2013 5:54pm
Forum: E-Bike Technical
Topic: Why can't you run 2 brushless motors off 1 controller?
Replies: 10
Views: 2037

Why can't you run 2 brushless motors off 1 controller?

I just can't seem to wrap my head around this concept. What would happen if you took 2 hub motors and hooked the phases up to each other and then spun one of the wheels? Would both wheels spin at synchronous speeds? 1 acting as a gen and the other as a motor
by SHARKBITEATTACK
Oct 13 2013 4:08pm
Forum: Battery Technology
Topic: 12V A123 LiFePO4 w/ BMS car battery replacement?
Replies: 27
Views: 7060

Re: 12V A123 LiFePO4 w/ BMS car battery replacement?

This brand had a couple motorcycle batteries on display at my local battery plus store http://shoraipower.com/

I also saw one that they used on the television show horsepower TV. I don't recall the name though
by SHARKBITEATTACK
Oct 12 2013 2:35pm
Forum: E-Bike General Discussion
Topic: Show Us Your Homemade Battery Housing
Replies: 566
Views: 168809

Re: Show Us Your Homemade Battery Housing

Mundo, that aluminum work is so clean looking. Nice work!
by SHARKBITEATTACK
Oct 12 2013 2:20pm
Forum: E-Bike General Discussion
Topic: Full Suspension XC vs Downhill Frame For Light Duty Offroad
Replies: 8
Views: 1039

Re: Full Suspension XC vs Downhill Frame For Light Duty Offr

So I wound up buying a Jamis Dakar XCR. It's an 07 model, with deore LX shifters, hydraulic brakes, upgraded rockshox RL3 air shock and a 100mm air fork. Only weighs 31lbs Nicest bike I've ever owned! I bought the bike because it had full suspension and because I thought the frame had a lot of room ...
by SHARKBITEATTACK
Oct 10 2013 8:34pm
Forum: E-Bike General Discussion
Topic: Most Reliable afforable inner tube for ebike?
Replies: 15
Views: 990

Re: Most Reliable afforable inner tube for ebike?

I just bought some avenir DH tubes and cyclops pro 26 x 2.4 tires. Holding up pretty good so far. The tubes are 2.5mm thick!
by SHARKBITEATTACK
Oct 10 2013 12:11pm
Forum: E-Bike General Discussion
Topic: My firts ebike --- MAC, Bafang, MXUS???
Replies: 20
Views: 3173

Re: My firts ebike --- MAC, Bafang, MXUS???

I completed my first build not long ago and used a 2808 9C motor and have been very happy with it. Lots of power and fairly low cost compared to some of the geared motors.
by SHARKBITEATTACK
Oct 09 2013 10:32pm
Forum: E-Bike General Discussion
Topic: Upgraded to a FS frame, downgraded performance.
Replies: 21
Views: 2018

Re: Upgraded to a FS frame, downgraded performance.

Just an idea, maybe heavier weight oil would give you better damping?
by SHARKBITEATTACK
Oct 09 2013 12:23pm
Forum: E-Bike General Discussion
Topic: Spotted this in Ottawa's West End on Monday
Replies: 14
Views: 1467

Re: Spotted this in Ottawa's West End on Monday

Lol so instead of a V-twin is that a W-triple?
by SHARKBITEATTACK
Oct 03 2013 11:21am
Forum: E-Bike General Discussion
Topic: Full Suspension XC vs Downhill Frame For Light Duty Offroad
Replies: 8
Views: 1039

Re: Full Suspension XC vs Downhill Frame For Light Duty Offr

20 pounds mounted wrong will still toss you on mildly hard off road riding. But we were discussing light duty off road. 20 pounds on a rear rack can do that. Weren't we talking about 60 pounds? Try that and then tell me it doesn't suck. Not saying it will be completely unridable, just that riding i...
by SHARKBITEATTACK
Oct 01 2013 6:22pm
Forum: E-Bike General Discussion
Topic: Full Suspension XC vs Downhill Frame For Light Duty Offroad
Replies: 8
Views: 1039

Re: Full Suspension XC vs Downhill Frame For Light Duty Offr

I had the batteries donated to me and I have about 800 of them. They are pretty high quality cells as far as NiMH goes. 5000mah subC tenergy propel cells that can handle 30A continuous discharge. 3 strings at 72v would give me my 1080Whrs. I have 20lbs of nimh on a rear rack on my current build and ...
by SHARKBITEATTACK
Sep 30 2013 9:46pm
Forum: E-Bike General Discussion
Topic: Full Suspension XC vs Downhill Frame For Light Duty Offroad
Replies: 8
Views: 1039

Full Suspension XC vs Downhill Frame For Light Duty Offroad

So I know alot of you guys go for the DH/Freeride bikes for high speed and serious offroad machines. I'm looking at a Giant NRS XL Frame that I can get a good deal on. How well would something like this work for moderate offroading? Dirt and grass trails with the occasional log and rock I gotta go o...
by SHARKBITEATTACK
Sep 23 2013 1:39pm
Forum: Battery Technology
Topic: Battery Performance when a Cell goes bad?
Replies: 6
Views: 501

Re: Battery Performance when a Cell goes bad?

NiMH actually, but I was wondering just in general.