ElectricMotorcycleForum.com

yes, i have a few welders, not a spot welder though, so i would probably just solder them (we all know how well that works) i do have a tig welder if that would work?
im running a agni 95r
and a kelly kdc 72601- 72v 600amp regen.

you guys are scarring me here- someone said betting a bms under 500 would be tricky. i beleve the mini bms will cost me around 320 bucks.

well sounds like the mini bms is a good system- anything i should watch out for or know?

Thanks for the help

i have a 72 volt system. 23X3.2 = 73.6 thats were i get 23 i guess im running 24 then.

i'm starting to understand why they could be so expensive, though compared to a controller they seam rather simple.

i looked into mini bms but read that the max amperage was around 90- did I read this wrong?

i was also looking into the lithiumind, which i read was only good for 125amps for 10 seconds.

the lithiumate just seams like more then i need for a bike, through the 600 amps was impressive.

until late night i was under the impression that bms had their own contactor for disconnecting the controller or charger.

what other companies are out there?

is 400 peak amps really that uncommon?

im having a hard time finding bms that can handle 400 amps that dont cost $400-700.
what is everyone else using?

is the contractor the main reason high amperage bms are expensive?- in which case could i just use the contractor on the bms in the activation circuit for the main contractor?

i've seen some without contractors also- unless im missing something, doesn't that defeat the purpose of having a bms?

btw im using a123 26650 cells- about 23 in series.

thanks for the help-

sorry if you have dial up.

a 600 watt kelly is going to cost me $800-1000 bucks. is this really my only option?

kinda a bummer.

get motor torque peak, then get the final ratio from the radio of front to rear sprocket. Then get the ratio for 1st, 2nd, 3rd, etc gears, then get the primary reduction. Then you can calc torque at the rubber.

now when honda puts out official torque specs is that the torque at the crank? i always assumed they would wont to make it more impressive and say there max torque at the wheel in 1st gear.

ICE

whats ICE?

Bob recommended a kelly controler for 72v regen- how does kelly compare to alltrax?
why didn't Bob use regen?
and why was there a 3phase ac inverter on a dc powered dirt bike?



now if i'm running a agni 95, how do i know how much energy its going to be pulling under stress?

thanks for the help
Daniel

frankly i dont know the specs i want because i'm compairing it to my xr400, witch wont tell me the torque at the wheel either, so i'm stuck there

well i would like 60mph, 50 would be great, 40 would be acceptable
probably going to use li ion or li phosphate ion- i haven't really done the research yet.
i ride in very steep areas like Carnage to desert riding. now i'm planning on having a set of sprockets for different style of riding.

wish i knew more.

i got the 130ft lbs from the thunderstruck motors page- look at stall torque http://www.thunderstruck-ev.com/perm132.htm

the 48v limit with regen came along when i called thunderstruck and electric motorsport and asked about the perm- they said it was possible but increasablely hazardous- which i don't believe is true- but thats why i asked.


budget- well i figure i'm looking at 1000-1500 for the motor, another 300 or so for the controller, and another 1000 for the batteries- i assume when i look into its going to be more like 2000 for the batteries

but i'm all for bang for my buck- its going to take a while to pay this off.

i'm having trouble choosing a motor for my electric dirt bike conversion.

i have a 2002 crf450 frame.

at the moment i'm leaning twards a perm 132, however i've found so many diffrent specs for the motor i'm having some trouble: i beleve this is the specs from their web site :http://www.perm-motor.de/site/pdf/Gleichstrommotoren_PMG/Technische_Daten/PMG_132_TD_Technische_Daten_und_Beschreibung_English_02-08.pdf

now if thats true that it can only produce 26nm of stall torque i dont think it will work for me, how ever electric motorsports says it can produce 110ish ftlbs of stall torque at 72 volts.

am i missing something or what?

i would love to know what you guys think about these motors:
http://www.perm-motor.de/site/en/products/syn_motors.php?linkid=p&linkid2=1
i'm interested in the pms 120w

http://www.agnimotors.com/home/index.php?option=com_frontpage&Itemid=47
agni motors

d and d sepex
http://www.electricmotorsport.com/store/ems_ev_parts_motors_sepex.php

are there any others anyone has in mind?

i know the zero uses a perm 132, and i know bob simpson-(http://www.evdrive.com/Emoto_project/moto_project.html) used 2 perm 132s

please i'm desperate for some answers
Daniel