Everything on this truck is a bit undersized, but I am trying to see what I can
get away with in order to use less lithium. So I have started with an Alltrax
72 volt 450 amp controller, 480lbs of BB600 Nicads in two strings of ~81 volts
and an 8 brush ADC 6.7 motor. The truck itself is a 1970 Datsun 520. I have
not weighed the truck yet, but I believe the stock weight was around 2200 lbs.
I have just recently started taking it on short excursions, and my goal is to
get 20 miles range with this setup. I'm still dialing it in for efficency and
about 20% above my energy usage goals. If I can get the range that I want
with my Nicads, and I'm OK with the performance then I will start looking at a
lithium solution. I would expect to be able to get the truck in the 50 to 70
mile range with a 72v 200ahr pack.
Right now I am in phase one of what I consider to be a very long term
commitment, so I have been focused on putting the 38 year old truck back
together in a way that will last a long time and look great. It's been a lot
of fun.
If I am not happy with the performance at 72 volts then the next step will be
to upgrade to a Zilla and likely add more battery weight. I may also upgrade
the motor to something bigger if I feel it is necessary. I do have this motor
setup for forced air cooling which should help, and I am still optimistic that
it has been beefed up enough (I spent two days of last Spring Break in Jim
Husted's shop with my 16 year old son and the motor) to get the job done.
damon> Date: Tue, 29 Jan 2008 09:25:31 -0700> From: [EMAIL PROTECTED]> To:
[email protected]> Subject: Re: [ElectricMotorcycles] Lithium vs
lead?> > Damon> > What is the weight of the truck? What motor? Batteries?
Controller> amps (Regen)? Range, etc? My next project will be 72V also and
curious> as to your success. I am thinking D&D Series Wound because of the>
larger mass to move (1200 lb sans people). Also thinking of the Harley> trans
using two gears to give decent acceleration, space not big> consideration. Not
having to cram like the EMC.
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