A wise man once said, if you can't build it right, build it adjustable. I'm
not knocking anybody, as I'm more of a trial and error guy instead of
calculations. Don't believe what you hear, and only half of what you see.
----- Original Message -----
From: Garret Maki
To: ElectricMotorcycles
Sent: Friday, January 19, 2007 4:43 PM
Subject: Re: [ElectricMotorcycles] Ninja 250 conversion?
The best bet is to do go the the 4qd website and do the calculations for the
ratio needed for you wheel size and desired speed. Front sprockets are cheap
~$10 each. I made is so my best guess gearing put a 13 tooth on the motor, but
I also have an 11 and 15 tooth sprocket which I actually do change from time to
time to play around. I can change the front sprocket in about 10 minutes.
DO you think 6/1 Drive ratio is the best bet?
--
[EMAIL PROTECTED]
Steven Parker
Video Production Specialist
ITCS/ACES
69A Mumford Hall, MC-710
University of Illinois
Urbana, IL 61801
"I absolutely refuse to be anonymous.
Don't use handles. Use your real name.
Have the conviction to identify your ideas."
On 1/19/07 12:37 PM, "Andrew Wowk" <[EMAIL PROTECTED]> wrote:
>From Bidwels book "Secrets of El Ninja" the following data was taken
from a chart:
Voltage: 48
Weight: 456
Kilowatt-hours: 4.1 (likely flooded batteries)
Front # of teeth: 12
Rear # of teeth: 72
Drive Ratio: 6.0
Peak motor top speed (mph): 43
Actual top speed (mph): 43
Actual 0-30 mph (seconds): 7
Actual stop-and-go range (miles): 28
The following was a different grear ratio (with numbers in same order):
48
456
4.1
16
72
4.5
57
51
8
--
Hope this helps,
Andrew
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