Search found 143 matches

by dimitrib90
May 06 2009 2:31am
Forum: Battery Technology
Topic: Duct Tape Surgery - CammyCC
Replies: 105
Views: 8541

Re: Duct Tape Surgery - CammyCC

That looks absolutely horrible. I would get all my money back and then some. :D Shoulda went with konions :D My Cammy_CC battery is still ok. Im not doing any big discharge rates on mine so its fine for the scooter I have.
by dimitrib90
May 04 2009 3:53am
Forum: Battery Technology
Topic: Bosch 36V fatpacks opened up
Replies: 600
Views: 74389

Re: Bosch 36V fatpacks opened up

I just got some konions in the mail from an ebay bosch fatpack. I havent picked up a charger yet but I was wondering if it would be hard to make a single or double cell charger for these konions? Do they sell double cell chargers for 18650 konions?
by dimitrib90
Apr 09 2009 2:09am
Forum: E-Bike Technical
Topic: ELECTRIC TRANSMISSION DELTA /WYE and SERIE/PAPALLEL stator
Replies: 652
Views: 107939

Re: ELECTRIC TRANSMISSION Video DELTA / WYE With 9 continent

SHOW US A TOP SPEED VIDEO!!! IM DYING TO KNOW HOW FAST THIS THING GOES!!! :twisted: :twisted: :twisted:
by dimitrib90
Feb 15 2009 6:00am
Forum: Battery Technology
Topic: Discharge Curve: Headway 38120S (screw terminal) 10ah cell
Replies: 108
Views: 17437

Re: Discharge Curve: Headway 38120S (screw terminal) 10ah cell

might as well buy a ping pack I dont know if you noticed but pico1 looks like our friend from Falcon-EV. He's uploaded the same graph that our buddy has on his website. Maybe pico1 is taking a peek at our forums. :) EDIT ADD: Pico's graph at 3C is no where close to Dr.Bass' graph at 3C. Im going wi...
by dimitrib90
Feb 01 2009 4:21am
Forum: E-Bike Non-hub Motor Drives
Topic: Go kart clutch? Has this been discussed?
Replies: 18
Views: 3684

Re: Go kart clutch? Has this been discussed?

The same Kart was later re-done to eliminate the clutch, and run direct drive. It was much faster, much more efficient, and smokes the tires from a start rather than smokeing the clutch. RC motor speed controllers seem to be shockingly good at starting a motor from a stop, even under load. Don't as...
by dimitrib90
Jan 02 2009 5:05am
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 133237

Re: High power RC motor and drive unit production

It all makes sense now. :D My only concern now is I have no idea how I would mount this to the bike. Can you buy this as a whole kit? When do you expect this to be completely finished?
by dimitrib90
Jan 01 2009 9:10pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 133237

Re: High power RC motor and drive unit production

Can you have a 12mm because 1/2 inch is about .7mm too big for my turnigy motor? Please. :D :mrgreen: The adapters are not for the motor shafts, but for the output shaft of the drive, which is 1/2". It is not too hard to get pulleys for 12mm motor shafts. Plus, you can drill these out pretty easily...
by dimitrib90
Jan 01 2009 8:37pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 133237

Re: High power RC motor and drive unit production

recumpence wrote:
Yup, 1/2 inch.

Matt
Can you have a 12mm because 1/2 inch is about .7mm too big for my turnigy motor? Please. :D :mrgreen:
by dimitrib90
Jan 01 2009 6:54am
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 133237

Re: High power RC motor and drive unit production

Hi, The drive itself is aluminum. Steel tabs would need to be welded to the frame to bolt to. Simple enough. Matt I believe the Xtracycle frame is aluminum so I think Matt means aluminum tabs. It is a collar that set screws to the shaft with threads for the freewheel. Piece of cake. Matt So do I ne...
by dimitrib90
Dec 31 2008 9:52pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 133237

Re: High power RC motor and drive unit production

recumpence wrote:It is a collar that set screws to the shaft with threads for the freewheel. Piece of cake.

Matt
So do I need to get both the FW adaptor and crankset?

http://www.cyclone-usa.com/sc_images/pr ... _image.gif

http://www.cyclone-usa.com/sc_images/pr ... _image.gif
by dimitrib90
Dec 31 2008 9:07pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 133237

Re: High power RC motor and drive unit production

recumpence wrote:FW adaptors are in! Man, these things are beautiful!

I will post pics sometime tonight.

I am very impressed with the quality of these!

Matt
How do these FW adaptors work? Do you need to have an axle cup welded to it?
by dimitrib90
Dec 31 2008 7:07am
Forum: E-Bike Non-hub Motor Drives
Topic: Go kart clutch? Has this been discussed?
Replies: 18
Views: 3684

Re: Go kart clutch? Has this been discussed?

I was thinking of doing the exact same thing for my ebike. The reason that he uses the clutch is because of the high amp draw to get the go kart (or bike) moving. Once the go kart or bike is moving, I dont think that there is a problem. The main reason that the clutch has been overlooked is because ...
by dimitrib90
Dec 27 2008 2:51am
Forum: E-Bike Non-hub Motor Drives
Topic: Mongoose DX project
Replies: 208
Views: 28735

Re: Mongoose DX project

Right at about 0:40 when I say "I hate that!" I'm referring to the giant spark that occurs when the batteries are connected to the ESC. What do you guys do to prevent this from happening? I feel like that could wear out connectors quite prematurely. :? http://endless-sphere.com/forums/viewtopic.php...
by dimitrib90
Dec 27 2008 2:42am
Forum: Battery Technology
Topic: Headway vrs Thundersky?
Replies: 20
Views: 3536

Re: Headway vrs Thundersky?

Anyone ever compare the new Headway cells to the equilivent capacity TS cells? For exampl 4P of new Headways to a TS-40 ah ? The published ratings look similar at 3c. The going rate for Headways looks to be around $20 each, Elite wants $68 for a single TS-40. Headways all the way. The Thundersky ce...
by dimitrib90
Dec 27 2008 2:34am
Forum: Battery Technology
Topic: Can Makita LXT fast charger charge multiple cells at once?
Replies: 9
Views: 1276

Re: Can Makita LXT fast charger charge multiple cells at once?

I wired one of Jonathan's shells up to a pack that is 4 18v LXTs in parallel. I just soldered a wire to the each of the terminals on the PCB in the shell. However the charger flashes that the battery is bad after about two minutes. Do I need to somehow disable the BMS board to get this to work? Tha...
by dimitrib90
Dec 27 2008 2:30am
Forum: Battery Technology
Topic: Onboard ebike charger
Replies: 8
Views: 822

Re: Onboard ebike charger

This charger will not work for you because they do not have a 36V option.
by dimitrib90
Dec 23 2008 7:23pm
Forum: Battery Technology
Topic: 36V Battery for $400? Which ones best?
Replies: 16
Views: 1527

Re: 36V Battery for $400? Which ones best?

Can anybody verify the 2ah rating, it seems I read somewhere that it was closer to 1.8? The VT cell is rated for 1.1ah and the Bosch fatpacks are 2p so 2.2ah max in theory. I got a couple used VTs and before I fried my CBA I saw just shy of 1ah under heavy load (at like ~8C... was ~30w discharge if...
by dimitrib90
Dec 23 2008 7:18pm
Forum: Battery Technology
Topic: 36V Battery for $400? Which ones best?
Replies: 16
Views: 1527

Re: 36V Battery for $400? Which ones best?

Dimitri, So we save a total of $25 each? Minus cost of shipping to whomever does the footwork, sounds pretty good. Are these being fazed out by Bosch, or are they keeping the 36 volt line? I wonder if the price will keep going down. I wanted two chargers so that I could parallel the chargers to get...
by dimitrib90
Dec 22 2008 4:04pm
Forum: E-Bike Non-hub Motor Drives
Topic: Simulation Program Pre-Announcement
Replies: 22
Views: 2801

Re: Simulation Program Pre-Announcement

The Grand Conclusion This is where you really see the big difference. Check out the heat created: Heat.gif ...and the total heat: HeatTotal.gif The bottom line is that the RC motor just blows away the competition . This should put the final nail in the coffin of the hub motor and makes me want to a...
by dimitrib90
Dec 21 2008 3:41pm
Forum: Battery Technology
Topic: 36V Battery for $400? Which ones best?
Replies: 16
Views: 1527

Re: 36V Battery for $400? Which ones best?

I was looking on ebay and I saw some Bosch 36 volts going for $59 for the Fatpack which is 2 ah I believe. If you buy 4 and get 2 chargers that should come in around $300. I'm thinking of doing it myself. I was thinking the exact same thing. Im was quoted $50 per pack if I buy 10 packs. Ill take 5 ...
by dimitrib90
Dec 20 2008 3:42am
Forum: Battery Technology
Topic: 36V Battery for $400? Which ones best?
Replies: 16
Views: 1527

Re: 36V Battery for $400? Which ones best?

Li-MN for so high discharge rate is not very safe. WoW, 90A constant current, 30AH high rate LiFePo4 can hold it, constant 3C. :D I dont need 90A continous :lol: What Im looking for is something that will give my rc motor a little juice when I go up a really steep hill for a couple of seconds. I wi...
by dimitrib90
Dec 19 2008 5:49pm
Forum: Battery Technology
Topic: 36V Battery for $400? Which ones best?
Replies: 16
Views: 1527

Re: 36V Battery for $400? Which ones best?

The problem that Im having is making something that will charge quickly enough for my new rc setup so that I can travel to school, charge the battery pack, and travel back. The other problem is money. LiMn is so far the cheapest way to get LiFePo4 and I dont even need a BMS!! Headway cells would be ...
by dimitrib90
Dec 19 2008 1:14am
Forum: Battery Technology
Topic: 36V Battery for $400? Which ones best?
Replies: 16
Views: 1527

Re: 36V Battery for $400? Which ones best?

Since $.55 p/wh is not practical, Im thinking about going with a 36V 10ah lithium manganese. I should easily be able to do that with the Bosch fat packs.
by dimitrib90
Dec 18 2008 11:58pm
Forum: Battery Technology
Topic: Nickel-Manganese-Cobalt 'NMC' 18650 from Imara
Replies: 10
Views: 1923

Re: Nickel-Manganese-Cobalt 'NMC' 18650 from Imara

The life cycle compared to the konions is really bad. Only 250 cycles!!! They must have really been discharging the batteries at currents for their testing.