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[frodus]

www.evcomponents.com

take a look at the batteries there... anything from 10Ah cells, to 200Ah cells. You don't HAVE to use small format cells.

email me travis@evcomponents.com and I can help you chose something.

[HotRodHoose]

Ok guys, I ran into another problem that I want some input on please!  I have decided on going with a 72v system and I am sticking with a single motor since I got talked out of it, after I finish my project I plan on experimenting with different motor setups.  I am also sticking with 72v worth of AGM SLA batteries and needed some input on chargers.  I am hearing different things about what the best charger would be.  For instance should I get a low amp 72v charger or high amp 72v charger?  The high amp will charge it faster but I was also told the lower amp will give a better and deeper charge.  And finally I was told by some people to buy a waterproof charger and mount it to the bike, and others are telling me not to mount it and just carry it around with me or stash it in the bike in storage but not connected or mounted.  I would also be interested in hearing what chargers you guys are using and if powerstar batteries are any good from robotmarketplace.com (they are very cheap and I don't want to stick with lead acid when I start testing other motor setups.  Thanks a lot again!

[HotRodHoose]

I did have another question for you guys that I forgot to add, what would be the advantages/disadvantages to go to a 450amp controller from a 300amp controller?

[frodus]

For charger, I'm using a Delta-Q 96V charger with custom charge algorithm. They have built in algorithms. We also sell a similar charger at evcomponents.com

They're both decent current levels and they're smart chargers. They won't balance the cells, so once every few months, its recomended to put a 12V charger on each one (one at a time is ok) to re-balance the cells.

For me, I'd rather have 1 larger charger that is waterproof that can quick charge my cells. I dont' want to lug around extra crap. I want it all onboard. I like this charger because it'l do lifepo4 and lead, its waterproof and its fairly small and its higher power than the Zivan charger.

I did have another question for you guys that I forgot to add, what would be the advantages/disadvantages to go to a 450amp controller from a 300amp controller?

more current to the motor = more torque to the wheel = better acceleration. Volts is speed, amps is torque. Plus it gives you a little flexibility in the future for different battery setup/motor setup.

Just don't turn a 450 all the way up when you first get it. Start low, work your way up while watching battery sag levels. Then you tune it to fit the battery limitations (see spec sheet for battery).

[HotRodHoose]

Ok guys, I am back, this is by far my roughest semester with 7 classes including one being my senior project (building my electric motorcycle), so getting a hub centered steering front end is out because I will not be getting it until the spring and my project is due in about 4 weeks.  I got everything going good but I came to a simple and stupid road block.  I got everything I need for this project and I mocked everything up and started assembling the bike but now I realized, I don't have the wiring, lug ends, or safety covers.  I am having a hard time finding them, one guy told me to check walmart because thats where he got his, but my walmart does not have wire in bulk.  I tried an electrical shop and they don't have anything under 12 gauge.  I need to get like a 2 gauge or 4 gauge wire I am guessing with 72v.  Where is everyone else getting wiring from?  Thanks.  (This is a lot more work then I expected)

[Blindspot]

welding wire dude, #4 or #6.  Try airgas. NAPA has it too, maybe even autozone, but a welding shop/NAPA will have it for sure.- Blindspot

[mpipes]

You can also try car stereo shops, they usually have wire for carrying  massive currents, along with nicely made connectors for them.. although this stuff is generally beautifully machined, overbuilt and way more aesthetic than you'd need (gold plated everything) along with a higher price. I have 1/0 gauge power for audio in my ICE powered truck!

[HotRodHoose]

Ok guys I need some good help and fast, the bike is due next Friday and I am in a rut.  I bought the 72v Eteck RT kit from Elecectricmotorsport.com and I was wiring it up today and I ran into a problem.  I don't know where every wire goes, lol, but I have a generic 72v wiring diagram but its not very detailed.  I bought the altrax controller but it doesnt show me what wires go where, I also bought the magura twist grip and have no clue what the color of the wires mean and where to put them on the controller, also dont know how to hook up the cycle analyst from the same website.  I also don't know how to put my ignition key into the wiring to allow me to have a keyed cut off.  One more thing, the diagram I have shows a 72 to 12v dc converter from the shunt and the fuze, but then on the diagram he has labeled "from bikes 12v system" coming from the contactor.  Does anyone have any help to lend or a better wiring diagram???  Please help me, my graduation depends on it, lol.  Thanks a lot everyone in advance!

[HotRodHoose]

WOW, I am so p*ssed off right now, DO NOT BUY FROM ELECTRICMOTORSPORT.COM.  I bout the motor and controller kit off of them and for some reason I got two diodes instead of one and I called to figure out why, by calling their tech support line, and the guy told me they can't do tech support because they are too busy to be answering my questions, he told me to get on forums and buy a book.  This is ridiculous, how does a company offer tech support if they can't fill their end of the bargain.  I am pissed off that I paid close to 2k in parts from them if they told me they would offer tech support if I got stuck and then this sh*t happens.  I am so freaking heated right now, I have a senior project that is due in less than two weeks and they can't help me out, what a bunch of jerks.  Thanks a lot electricmotorsport for failing.

[frodus]

have you bought a book? carl vogels book should be in your toolbox, plain and simple. If you don't know jack about electronics/system design then I think you should get it asap and stop acting like a baby.

it should be obvious what the diodes are for if you do a little searching for system design. You bought the parts. They sent you what you need. go to alltrax for the manual. search for "magura wiring diagram" on google. I can't believe you don't know what the diodes are for..... and yes, you need a diode, one for each contactor.

do some research of your own. You obviously went over your knowledge level and can't figure it out and are bitching and moaning about it and slamming the distributor because you need your hand held.

They have little patience (so do I) for people that don't do the research for themselves. The alltrax diagram is very easy to read. The magura throttle diagram is out there, but you don't need it if you can work a multimeter.... and the diodes are for the contactor.... they send extras in case people like you put them in backwards the first time.

[chdfarl]

have you bought a book? carl vogels book should be in your toolbox, plain and simple. If you don't know jack about electronics/system design then I think you should get it asap and stop acting like a baby.

it should be obvious what the diodes are for if you do a little searching for system design. You bought the parts. They sent you what you need. go to alltrax for the manual. search for "magura wiring diagram" on google. I can't believe you don't know what the diodes are for..... and yes, you need a diode, one for each contactor.

do some research of your own. You obviously went over your knowledge level and can't figure it out and are bitching and moaning about it and slamming the distributor because you need your hand held.

They have little patience (so do I) for people that don't do the research for themselves. The alltrax diagram is very easy to read. The magura throttle diagram is out there, but you don't need it if you can work a multimeter.... and the diodes are for the contactor.... they send extras in case people like you put them in backwards the first time.

WOW! Dont you think thats a bit harsh. Those parts are very expensive and some people have a hard time with diagrams and such. If and i Im saying IF they offer tech support they should honor it and even if they dont like i said for a purchase that large its nice to know the company would look out for their costomers
Now on the other hand the guy should have some idea what hes doing if he expects a bachelors degree

[mKlRivPwner]

Ok.  It's for your senior project.  And you chose an electric motorcycle.  Shouldn't you have an idea of what goes into an electric motorcycle?  And if not, shouldn't you be doing the leg work to learn it?

[HotRodHoose]

Ok, thanks for hounding me, my question for them was a simple question.  I don't remember the number of the diodes, I knew where they went, I did check the website, and I got the wiring diagrams, thanks frodus.  The reason I called them is because they sent me two different diodes and neither of which is the one that alltrax said i need for the contactor, thats why I called them to see how they ran their set ups.  I apoligize for being a Mechanical Engineer and not an Electrical Engineer, you aren't born an engineer, thats why you go to school is to learn.  I wanted to learn how they used two diodes instead of the one diode alltrax is saying to use.  I was told to buy the secret of el nina book.  I bought a book off of amazon but its not very good for anyone with an electric motorcycle, it was made for more of like electric cars and forklifts.

[HotRodHoose]

I know what I am doing, I got the diagrams now and figure it out, I had a diagram with reverse and a foot control, but now I have the right one and got everything figured out except the diodes.  I was a little flustered the other night when I could exactly read the diagrams the right way but I am good now.  I did a lot of leg work to figure out what I was doing here.  Don't go blasting me because you think you are a genius and like to talk down on people who are doing an electric motorcycle for their first time.  Just because I figure everything out but the diodes doesn't mean I have no clue what I am doing.  This was a learning process for me as well as a senior project, at least give me some credit for attempting something that isn't easy for a mechanical engineer and not making a lawn motor deck.  Frodus man you made some jerk comments.  BTW they aren't the same diode, and its not an extra for  "people like me that put them in backwards the first time."  The fact of the matter is that they told me if I needed help to call tech support (I think I still have the email from the one guy telling me this), and they couldn't stay on the phone with me for 20 seconds to tell me about the diodes.  Maybe you can fill me in on how to build a perpetual motion machine Frodus.

[mKlRivPwner]

Ok guys I need some good help and fast, the bike is due next Friday and I am in a rut.  I bought the 72v Eteck RT kit from Elecectricmotorsport.com and I was wiring it up today and I ran into a problem.  I don't know where every wire goes, lol, but I have a generic 72v wiring diagram but its not very detailed.  I bought the altrax controller but it doesnt show me what wires go where, I also bought the magura twist grip and have no clue what the color of the wires mean and where to put them on the controller, also dont know how to hook up the cycle analyst from the same website.  I also don't know how to put my ignition key into the wiring to allow me to have a keyed cut off.  One more thing, the diagram I have shows a 72 to 12v dc converter from the shunt and the fuze, but then on the diagram he has labeled "from bikes 12v system" coming from the contactor.  Does anyone have any help to lend or a better wiring diagram???  Please help me, my graduation depends on it, lol.  Thanks a lot everyone in advance!

This is what gave everyone the impression that you didn't have a clue.  You didn't know where the wires on the throttle went, you didn't know how to hook up the analyst, you didn't know how to wire the ignition into the system, you didn't understand how to wire the motorcylcle's 12V system into the contactor...  And you very desperately begged everyone else to do the leg work and bring you the diagrams.

I have no problems with you asking for help.  I was under the impression that you were at a complete loss and you needed some major help to get humpty dumpty all back together.  I'm sorry if that wasn't the case.  Again, it's just the way you came off in your post.