2/25/11
Friday, February 25, 2011
Thursday, February 24, 2011
Its ALIVE!
February 19-21, 2011
After weeding out 2 weak cells, I got it running! It even does wheelies and might get up to 25 mph. The first run was hairy with too much torque and too fast for safe hard starts. I need much more RPM, at least 60 to 72 volts to make this motor work right. I should know better, this is a 72 volt motor.
A few things I need to adjust for the next run:
1. Drop ratio from 3:1 to 2:1.
2. Get a 48 to 12 volt dc/dc converter for headlights.
3. Find and set timing to 10 deg Advanced for this rotation.
Wheelie photos to come,
Madman
After weeding out 2 weak cells, I got it running! It even does wheelies and might get up to 25 mph. The first run was hairy with too much torque and too fast for safe hard starts. I need much more RPM, at least 60 to 72 volts to make this motor work right. I should know better, this is a 72 volt motor.
A few things I need to adjust for the next run:
1. Drop ratio from 3:1 to 2:1.
2. Get a 48 to 12 volt dc/dc converter for headlights.
3. Find and set timing to 10 deg Advanced for this rotation.
Wheelie photos to come,
Madman
Beginnings of the Quadrunner...
2-18-2011 Madman's New Quadrunner Project:
Ten years ago I began working on an electric quadrunner. At that time my purpose was to prove the ability of Brushless DC (BLDC) drive trains. As Manzanita Micro grew I became too busy to focus on the project. Overtime the quadrunner grew dusty and I hoped that someday I would work on it again.
Recently, I find myself spending the little free time I have at Lords Lake Loop, in Quilcene. This is a great spot to go extreme jeeping and rock hopping. Currently we only take gas powered vehicles, which had me thinking about the old quadrunner. How cool would it be to build an electric off roading vehicle that could compete or beat the ICE's?
Reviving the quadrunner seems to have many current uses. Just the act of getting it running seems to be an accomplishment. Then it can be used to answer a lot of questions about what kind of systems or requirements are needed to electrify an off road vehicle. How much drive power do we need? How much stored energy is needed? Leading to, how far and how fast can we push certain systems?
To get started I needed to look at how far should it be able to go? One weekend in my Ford Escape Hybrid I went 2.5 hours, 125 miles and used 4 gallons of gas on all gravel roads. These seem like ideal requirements for an electric quadrunnder, however I need to determine how many kilowatts I will need to make this happen. At first we will start small with a goal of 1 hour at serious back roading speeds to keep up with the ICE's.
The first cut of components:
Motor
Advanced DC Motor 6.7 inch shorty with 4 brushes, a high bar count, and rated for 72 volts.
Controller
Raptor 1200 Mosfet Controller, approximately 180kw, no regenerative braking.
(this comes out of Goldie)
Battery Pack
48 Volts, 180AH CALB Lion Cells
, 8.64kw stored power.
Drive Train
The motor has a 3:1 chain drive or 2:1 #35 chain to the shaft drive to stock differential at 3.89:1. Low range is 11.67:1, high range is 7.78:1.
I am looking for 40 mph at 5000 rpm, and rock climbing torque. The differential can be locked and unlocked via remote stock cabling. I expect the first pass to be torqey, heavy and slow, but with "Every Ready Bunny" like range.
Things to work on:
*Rusty OLD Kawasaki KLF 300 frame. Ugly!!!!
*Looks like battery boxes are glued to it.
*Has over $6000 in parts on a junk frame.
*Modifying a shaft drive chassis was horribly expensive. Note....Never again!
Things to be happy about:
*The frame is disposable.
*Battery Boxes are Manzanita Micro stock items. We are showing off the BB180 mounting concepts for the first time.
*Really easy to work on.
Expected improvements:
*Acquire a Banshee chassis or another modern chassis with more apeal to the masses.
*Upgraded motor/drive system, options include: an AC drive from HPEVs, a home brew BLDC drive, or an 8 inch motor with 200 horsepower of snort.
*Some paint with a discernible color besides rust.
Stay tuned, it will run this weekend.
Madman
AKA Rich Rudman
Ten years ago I began working on an electric quadrunner. At that time my purpose was to prove the ability of Brushless DC (BLDC) drive trains. As Manzanita Micro grew I became too busy to focus on the project. Overtime the quadrunner grew dusty and I hoped that someday I would work on it again.
Recently, I find myself spending the little free time I have at Lords Lake Loop, in Quilcene. This is a great spot to go extreme jeeping and rock hopping. Currently we only take gas powered vehicles, which had me thinking about the old quadrunner. How cool would it be to build an electric off roading vehicle that could compete or beat the ICE's?
Reviving the quadrunner seems to have many current uses. Just the act of getting it running seems to be an accomplishment. Then it can be used to answer a lot of questions about what kind of systems or requirements are needed to electrify an off road vehicle. How much drive power do we need? How much stored energy is needed? Leading to, how far and how fast can we push certain systems?
To get started I needed to look at how far should it be able to go? One weekend in my Ford Escape Hybrid I went 2.5 hours, 125 miles and used 4 gallons of gas on all gravel roads. These seem like ideal requirements for an electric quadrunnder, however I need to determine how many kilowatts I will need to make this happen. At first we will start small with a goal of 1 hour at serious back roading speeds to keep up with the ICE's.
The first cut of components:
Motor
Advanced DC Motor 6.7 inch shorty with 4 brushes, a high bar count, and rated for 72 volts.
Controller
Raptor 1200 Mosfet Controller, approximately 180kw, no regenerative braking.
(this comes out of Goldie)
Battery Pack
48 Volts, 180AH CALB Lion Cells
, 8.64kw stored power.
Drive Train
The motor has a 3:1 chain drive or 2:1 #35 chain to the shaft drive to stock differential at 3.89:1. Low range is 11.67:1, high range is 7.78:1.
I am looking for 40 mph at 5000 rpm, and rock climbing torque. The differential can be locked and unlocked via remote stock cabling. I expect the first pass to be torqey, heavy and slow, but with "Every Ready Bunny" like range.
Things to work on:
*Rusty OLD Kawasaki KLF 300 frame. Ugly!!!!
*Looks like battery boxes are glued to it.
*Has over $6000 in parts on a junk frame.
*Modifying a shaft drive chassis was horribly expensive. Note....Never again!
Things to be happy about:
*The frame is disposable.
*Battery Boxes are Manzanita Micro stock items. We are showing off the BB180 mounting concepts for the first time.
*Really easy to work on.
Expected improvements:
*Acquire a Banshee chassis or another modern chassis with more apeal to the masses.
*Upgraded motor/drive system, options include: an AC drive from HPEVs, a home brew BLDC drive, or an 8 inch motor with 200 horsepower of snort.
*Some paint with a discernible color besides rust.
Stay tuned, it will run this weekend.
Madman
AKA Rich Rudman
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