Search found 82 matches

by AmpEater
Aug 20 2010 7:35pm
Forum: E-Bike General Discussion
Topic: Solar only ebike?
Replies: 76
Views: 5025

Re: Solar only ebike?

FMB42 wrote:Ampeater wrote:

"That's not how it works"

Three 12volt 80watt solar panels wired in series would give you 36volts @ 80watts.
No, that still isn't how it works guys. Really?
by AmpEater
Aug 20 2010 3:55pm
Forum: E-Bike General Discussion
Topic: Solar only ebike?
Replies: 76
Views: 5025

Re: Solar only ebike?

dogman wrote:I forgot about that too. Those 12v 80 watt panels would take three of em to make 80 watts of 36v.
That's not how it works

You need a grasp of watts, volts, amps, to hang with this pack

Watts = volts x amps
by AmpEater
Aug 18 2010 11:51am
Forum: E-Vehicles General Discussion
Topic: Lightweight electric car..... Nice!
Replies: 7
Views: 1404

Re: Lightweight electric car..... Nice!

Hot damn that is cool

Could just as easily be a fabric covering stretched over lightweight frame too
by AmpEater
Jul 05 2010 8:01am
Forum: Battery Technology
Topic: Zippy/ Flightmax / Turnigy/ Blue lipo testing (pt 2)
Replies: 281
Views: 29958

Re: Zippy/ Flightmax / Turnigy/ Blue lipo testing (pt 2)

Lipo is now stocked at the HK USA warehouse!

http://www.hobbyking.com/hobbyking/stor ... duct=10916

Don't see any 5.8ah or 8s packs in stock yet though. There are 5ah 6s however.
by AmpEater
Jul 04 2010 8:09am
Forum: Battery Technology
Topic: Zippy/ Flightmax / Turnigy/ Blue lipo testing (pt 2)
Replies: 281
Views: 29958

Re: Zippy/ Flightmax / Turnigy/ Blue lipo testing (pt 2)

^ Hell yeah.

8S HVC/LVC w/ 4 way parallel is EXACTLY what I need!

I'll take 20 to start

How big of a $$$ bribe will it take to get the first 20 off the line?
by AmpEater
Jul 03 2010 1:40pm
Forum: General Discussion
Topic: Result of ICE exhaust
Replies: 36
Views: 2938

Re: Result of ICE exhaust

Activated carbon is widely used for filtering stuff out of air. I have plans to install big carbon filters in all of my enclosed EVs for cabin air. There would be no exhaust inside the cabin. Luxury cars generally have a stage of activated carbon as part of the air system. A quick look at that mask ...
by AmpEater
Jul 02 2010 2:36pm
Forum: General Discussion
Topic: Result of ICE exhaust
Replies: 36
Views: 2938

Re: Result of ICE exhaust

This is one of those "ignorance is bliss" things I never used to think about breathing exhaust. Used to walk 10 miles a day. But then I learned how readily you absorb inhaled vapor, how the black smoke coming out of a diesel truck is ultra fine suspended particulate, how to smell the difference betw...
by AmpEater
Jul 02 2010 2:11pm
Forum: Battery Technology
Topic: Maximizing LiPo lifespan
Replies: 19
Views: 2318

Re: Maximizing LiPo lifespan

I was just thinking about this; a strategy to keep the resting SOC low without hindering usability. Charging before use, instead of after use, is a logical step, and one I will be using. You can tailor the AH charged to the length of trip. Keeping it around 50% DOD when you don't expect to need it m...
by AmpEater
Jul 02 2010 10:33am
Forum: Battery Technology
Topic: 4.1v lipo charging question
Replies: 6
Views: 708

Re: 4.1v lipo charging question

Well, the iCharger series has fully adjustable cutoff voltage in .01v increments (so you could do 4.15v or whatever too). Cheapest is around $100 at 10 amps, up to ~$230 for the 30 amp model
by AmpEater
Jul 01 2010 6:52pm
Forum: E-Vehicles General Discussion
Topic: Where to get a 48V 40A relay
Replies: 4
Views: 1291

Re: Where to get a 48V 40A relay

This is what you want http://cgi.ebay.com/Heavy-Duty-48-V-200-Amp-Contactor-Solenoid-Golf-Cart-/390198270521?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item5ad9a11a39 I have an extra from when I bought a few alltrax controllers I could sell, if $60 is too much for you. I like to over rate contactors es...
by AmpEater
Jun 30 2010 10:12pm
Forum: General Discussion
Topic: Infinite free energy. only $60.00
Replies: 7
Views: 777

Re: Infinite free energy. only $60.00

I bought 3
by AmpEater
Jun 26 2010 11:50am
Forum: Battery Technology
Topic: I just 15c charged some LiPo.:)
Replies: 10
Views: 1486

Re: I just 15c charged some LiPo.:)

With the 3010b set on 30amp charge, 30amp discharge, I'm cycling a 1850mAh 3s Lipo pack. No breaks between cycles. Get this, the capacity is increasing by a little bit on each cycle, and it gets warm, but 138f is the highest temp on the logger so far. It tops off the cell from discharged to full in...
by AmpEater
Jun 26 2010 11:06am
Forum: Battery Technology
Topic: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!
Replies: 38
Views: 4217

Re: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!

I know!!!! Damn!!! This is really really exciting!!! Think of those cars that got the huge sponsorships for batteries, like the guy with $100k of the Lithium Titanate batteries, or the couple of A123 sponsored drag vehicles. They all have multi-hundred pound bulky battery packs that cripple the pot...
by AmpEater
Jun 24 2010 2:22pm
Forum: Battery Technology
Topic: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!
Replies: 38
Views: 4217

Re: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!

Luke, I think the way to get the ICE crowd bought into the concept is to first make some light and small electric boosters as a nice performance kit to add to the cars. There aren't rules to prevent that kind of performance kit are there? It seems ideal for the drag guys, and it's a perfect applica...
by AmpEater
Jun 24 2010 12:23pm
Forum: Battery Technology
Topic: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!
Replies: 38
Views: 4217

Re: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!

Well if you're discharging at 90c, thats only enough for 2-3 quarter mile runs. You could fill a little trailer with 10kw of large (cheap) format prismatic LiFePo4 and pull it to the track, disconnect for your runs with a totally ridiculous 75 pounds of batteries on board, and then still have the ju...
by AmpEater
Jun 24 2010 10:03am
Forum: Battery Technology
Topic: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!
Replies: 38
Views: 4217

Re: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!

Hobbycity has added some more of these new packs....now in 6000mah http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=11940&Product_Name=Turnigy_nano-tech_6000mah_4S_25~50C_Lipo_Pack But the 6ah are only 25-50c. I wonder why the 90C discharge doesn't scale? Also shows 5C charging ins...
by AmpEater
Jun 23 2010 6:56pm
Forum: Battery Technology
Topic: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!
Replies: 38
Views: 4217

Re: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!

This is a beautiful day for the RC world, and folks into racing-types of EVs. This makes building an EV dragster possible with an entire battery sized to fit in a normal backpack. :) :) :) ..put it out there for prices that everday Joe can afford for his RC projects. This is the first time I've don...
by AmpEater
Jun 23 2010 6:49pm
Forum: Battery Technology
Topic: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!
Replies: 38
Views: 4217

Re: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!

the point is so that one could charge more quickly, have the batteries last longer at a given charge rate, get greater acceleration and hill-climbing capabilities, get less voltage drop and less battery heating and thus longer life. Yeah, this is exactly it. You don't want to run electronics at the...
by AmpEater
Jun 23 2010 4:48pm
Forum: Battery Technology
Topic: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!
Replies: 38
Views: 4217

Re: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!

The Off road/Jeep guys have been welding with 2 12v batteries in series forever. That's how I built my first EV....used 2 of the traction AGMs as my welder. I was thinking about an arc welder made from lipo last night while I fell asleep, you guys just brought it all back. I think you'd want to use ...
by AmpEater
Jun 23 2010 1:22pm
Forum: Battery Technology
Topic: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!
Replies: 38
Views: 4217

Re: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!

A really important question is what is the cycle life of this new nano-chemistry? Can one extend it time-wise or cycle-wise comparable to A123? [/quote] I'll be buying one of the 3s 3300mah packs for cycle testing. Cool thing is, at 10C charge and 45c discharge, back to back, putting a full 1000 cy...
by AmpEater
Jun 23 2010 10:50am
Forum: Battery Technology
Topic: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!
Replies: 38
Views: 4217

Re: Nano-tech LiPoly finally releases at HobbyCity! 45-90C!

So today is the day huh? My credit card still hasn't recovered from my last hobbyking battery spree. For some reason I had it my head that the new turnigy "nano-tech" were going to be LiFePO4, but now I see that they are modified LiCo. Interesting... I like the 10C charge rate. Looks like cell heati...
by AmpEater
Jun 22 2010 1:18pm
Forum: General Discussion
Topic: NEW 445nm 1W real BLUE laser for cheap!!!
Replies: 26
Views: 4095

Re: NEW 445nm 1W real BLUE laser for cheap!!!

Well that's interesting info :mrgreen: I'm pretty much into all things electronic, and anything can convert electricity into a focused beam of light with enough intensity to burn stuff peaks my interest. Especially when it becomes mass produced to the level of being "cheap" and readily available. Ho...
by AmpEater
Jun 22 2010 12:26pm
Forum: General Discussion
Topic: NEW 445nm 1W real BLUE laser for cheap!!!
Replies: 26
Views: 4095

Re: NEW 445nm 1W real BLUE laser for cheap!!!

Lol, Ive got the module this diode comes from all ready shipped and on its way. Each module from the projector is $550, and holds 24 of this diode, which wicked isnt even driving hard in the artic. At 1.8 amps drive current, they do about 1.7watts out. Im going to make some tiny keychain versions p...
by AmpEater
Jun 21 2010 9:35pm
Forum: E-Bike Build Threads / Photos & Video
Topic: KMX E Cobra
Replies: 16
Views: 3545

Re: KMX E Cobra

Wow, that is incredibly clean looking. Those packs are right at home there. Very well done

How twitchy is the steering at higher speeds?
by AmpEater
Jun 21 2010 9:10pm
Forum: Battery Technology
Topic: Zippy/ Flightmax / Turnigy/ Blue lipo testing (pt 2)
Replies: 281
Views: 29958

Re: Zippy/ Flightmax / Turnigy/ Blue lipo testing (pt 2)

Move over ladies, there's a new lipo whore in the parlor :lol: Is that a spark where 2 of the leads on your charger have shorted on the bench leg or just the flash from the camera ? And that's not even all of them :mrgreen: Just the flash reflected off a big shiny blob of solder on the lipo tab.