Hi Jeff,
Not really an expert on motorcycle transmission, but the first thing that
comes to mind is, I assume you don't want to clutch it? That would leave
out a lot of transmissions. I'm thinking some of the smaller kids type
motorcycles run without a clutch. My brother old Honda CT70 comes to mind.
Only 3 speed though. Do you want electric upshift and downshift as well?
Later,
Darin
BadFishRacing
----- Original Message -----
From: "Jeff" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, November 30, 2006 10:21 PM
Subject: [ElectricMotorcycles] Motorcycle transmission-motor interfacing
I am doing some preliminary research on what probably will be turning into
a long-range project.
I'm wanting to hook up a permanent magnet motor of around 1 to 1-1/2 hp,
(though the lower end of that power range is preferred) to a motorcycle
gearbox.
I want it to have a wide-range set of gears so as to be able to have a
wide range of speeds and torqes available.
Sometimes I will want to be running it at normal speeds, and other times
(such as when towing heavy loads up steep hills) I want slow, steady
torque. The common EV method of choosing one gear ratio, and making the
motor and controller and battery pack deal with the overload is not an
option in this project.
I also need to keep the assembly size as small as possible, so as a result
was thinking possibly about a 150-250 cc motocross bike or ATV engine
that's blown a piston or something.
I have no access to motorcycles on a regular basis, so have no way to
check any of this out unless I pretty well know the answers before I get
there.
So, I'm wondering if this a feasible idea, or am I barking up the wrong
tree? I need 4 or 5 speeds in a compact package (the smaller the better),
and a motorcycle gearbox is adaptable to electric shift (that's one of the
other requirements).
Can anyone point me to a good source of info for what I’m trying to do?
I have already found much of the controller info I need, but the
mechanical stuff is harder to come by.
Thanks!
jeff
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