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By appointment only!
Scott MacGregor
Plainville, MA 02762
Phone: (508) 695-3717
Fax: (508) 643-0233
Will a USPD Kit Fit My Bike?
The are some basic requirements:
1) Your rear wheel must have 32 or 36 spokes. Just count
them.
2) You must have what's known as a "3-cross" spoke pattern. To
determine if your rear wheel meets this standard, begin
at the
hub flange. (where the spokes radiate from at the
center of the
wheel) Starting where any spoke hooks into the flange,
count
the number of spokes it crosses on the way to the rim.
Be
careful not to miss the first crossing. It is VERY
close to the
flange. (about 1/4" from where the spoke leaves the
flange)
If you count a total of 3 crossed spokes, you're set!
3) The battery box must have sufficient clearance to be installed
in the frame. (male bike) If you're installing the kit
on a woman's
bike frame, you'll be using the rear mounted battery
pack. You
can disregard the following.
3a) Using the following diagram
as a guide, cut out a cardboard
template with
the following dimensions:
3b) Use
the cardboard template you made to determine if there
is
enough space in your
frame as shown below.
3c)
Place the locking tab (A) on the down-tube as indicated. Slide the
rear end of the
template (B) against the seat-tube so that it is
parallel to
the SEAT tube. (not the top tube) This is critical, since
this will determine
exactly where the locking tab (A) touches the
down-tube. There
must be about one (1) inch or more between the
top of the template
and the top-tube. (C) It does NOT matter if the
top of your
template is parallel with the top-tube of the bike as seen
in the above
diagram, only that the rear of the template (B) is parallel
with the seat tube!
4) If your bike meets all the
above criteria, you stand a 95% chance of
having a successful installation.
****NOTE: If your bike
doesn't meet some of the requirements outlined
above, don't give up! With a little mechanical
ingenuity you can adapt
the system to virtually any bike! As a member of
the Yahoo Power-
assist group recently noted:
"Both Tim and I (and probably many others
with thick tubes) did not have the space so we
removed the locking tab on the
battery box and eliminated the locking tab on the
down-tube - then used a hose
clamp. This will qualify many more bikes for the
kit."