Topica Loopframe_Guzzi Archive


Subject: Re: speedo

Author: Zerhackermann .

Date: May 31, 2001, 9:16 PM

Post ID: 1706945800


I used a sigma (if I recall) on my BMW. It needed a maximum of 5mm petween
the magnet and the sensor. I mounted the sensor on the forkleg and the
magned I glued to a penny and that went onto a mounting bolt for the brake
rotor.

The problem is that the guzzi drums (which 90% of us have) don't offer a
nice flat rotating surface like a disk does. I would suggest getting
creative. With enough wire from radio shack, you should be able to run the
sensor to the back wheel. so maybe on the inside of the dirve shaf housing
with the magnet on the wheel rim? Or on the front fender mount with the
magnet on the wheel rim? you might have to make a block to get the pickup in
close enough. a little wood, some carving and clear silicone sealer will fix
that. remember on the front forks you have to leave some slack in the wires.
the bikes weight compresses the springs a little. a good hard bump will
unspring and rip the wires loose. don't bother with spoke mounted magnets.
MC spokes are much too thick. you want one that has a good flat surface to
get some glue under it so you don't fling the thing off into the weeds as
you discover that when you thought you were doung 80 you were really doing
90.......

mostly you need to look at:

how it mounts on the bars. Mine clips in and out of a small cradle

the information it holds - mine goes to 100 (I think) and holds other
incriminating evidence...but holding down one big button for 3 seconds
erases that from the memory.

do the instructions deal with MC sized wheels? most bicycle wheels are
bigger right?

how the magnet and pickup mount. look at the instructions and the peices and
picture the whole shebang on your bike. I was lucky and the bicycle shop guy
was pretty helpful and let me paw through a ton of them before I found what
I wanted.

Oddly enough, I picked a spoke mount magnet, knowing that it would not fit.
It had more give (5mm as opposed ot 2) and the thickness of the magnet, even
after carving the spoke clip off, meant only using a penny to get it close
enough to register.

I'll look at the model tonight

 From: Chris Berry <guzzis-@hotmail.com>
Reply-To: Loopfram-@topica.com
To: Loopfram-@topica.com
Subject: Re: speedo
Date: Thu, 31 May 2001 23:28:37 -0400

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Zer and all-
I wanted to attach a bicycle speedo to my eldo too, but the ones available
locally are not suitable. I was told of a brand called Sigma which may
work. My problem was that I could not get the sensor close enough to the
magnet...usually they need to be 1-2 mm apart to work. The Sigma's sensor
and magnet are supposed to work further apart, thus possibly facilitating
mounting it on my loop. What brands have y'all who have done this used and
how did ya mount it? I'd love to see exactly how fast I'm going!
Cheers!
Chris in NC



 From: "Zerhackermann ." <chopp-@hotmail.com>
Reply-To: Loopfram-@topica.com
To: Loopfram-@topica.com
Subject: speedo
Date: Thu, 31 May 2001 17:59:36 -0000

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As some may recall...I need to get my bike inspected. And because I need
to
have a working speedo....

I worked up a couple solutions -
1) ask 'em stright out if I can run a bicycle speedo.

2) a BMW /5 speedo/tach cluster will fit and has the plugs for the idiot
lights. And I think it will be reasonably accurate (2:1 drive which I
think
the veglia is as well.) the only problem here is that the idiot lights on
the BMW are 2 wire. They each have their own hot and the Ambo uses a
common
hot with each light gronding at the instrument. This means I may have to
do
some weird wiring to make it work. Why go to the effort when a 30 buck
bike
speedo will work? This way I have a cluster that looks okay, works well
and
I don't have a big hole while the stock unit is rebuilt.

anything I missed?

I am assuming that the ratio in the speedo did not change between the V7
and
the ambassador
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