Computer Problem - Cycling Mob: Road Cycling, Mountain Biking and More

07-28-2003, 02:56 PM

Hello. If this question has been asked/answered a few times, I
apologize...its my its day on this board.

I received a Diamondback C8 Computer for my bike...after installing it
today, it appears that nothing works. What I mean is, there is a digital
readout, so the batteries work, but there doesn't seem to be any
communication from the magnet and sensor to the computer. The directions
are very bland and un-specific, especially when it comes to operation. Has
anyone ever heard of this brand before? Or, are all two-button systems
essentially the same thing? If so, how do I start and stop the readings
with each ride?

I even went to the "Diamondback" website and there wasn't any mention of
this product.

Thanks in advance.

Rich

07-28-2003, 04:44 PM

Thanks Doug...

To answer your questions:

the magnet is attached to the right side of the spokes...the senser is
attached to the inner (left) side of the right fork...so they pass each
other.

the distance is about one inch

yes...the computer is "locked" into place on the two points on the bracket

So to begin a ride, simply make sure everything is set at 0 and the m/h is
flashing? Is there a speedometer that should be constantly changing or just
the AVG and MAX speed readings? Also, does the trip timer work the same
way? Mine hasn't moved when I tried testing it by riding around my block...

Sorry for the stupid questions...I never used one of these things before and
its frustrating to see it not function.

Rich

PS. 27" code is 216

"Doug" <[Only registered and activated users can see links. ]> wrote in message
news:MAhVa.18794$[Only registered and activated users can see links. ]...
> Rich,
>
> I have the same computer on my bike. These may be obvious questions, so
> please bear with me:
>
> - is the magnet on the same side of the wheel as the pickup?
> - what's the distance between the magnet & pickup?
> - Is the unit fully seated in the carrier?
>
> I don't know much about other computers, and the instructions I had seem
to
> been misplaced. In normal operation, the right button is for pausing; the
> reset between rides hold down the left button while pressing the right. to
> have the unit start "counting" after reset, press the left button until
the
> m/h (or k/h) flashes.
>
> Hope this helps!
>
> Doug
>
> ps - can you tell me the three digit code for a 27" wheel?
>
> "Rich Reitman" <[Only registered and activated users can see links. ]> wrote in message
> news:R_gVa.26198$o54.859@lakeread05...
> > Hello. If this question has been asked/answered a few times, I
> > apologize...its my its day on this board.
> >
> > I received a Diamondback C8 Computer for my bike...after installing it
> > today, it appears that nothing works. What I mean is, there is a
digital
> > readout, so the batteries work, but there doesn't seem to be any
> > communication from the magnet and sensor to the computer. The
directions
> > are very bland and un-specific, especially when it comes to operation.
> Has
> > anyone ever heard of this brand before? Or, are all two-button systems
> > essentially the same thing? If so, how do I start and stop the readings
> > with each ride?
> >
> > I even went to the "Diamondback" website and there wasn't any mention of
> > this product.
> >
> > Thanks in advance.
> >
> > Rich
> >
> >
>
>

07-28-2003, 06:12 PM

"Rich Reitman" <[Only registered and activated users can see links. ]> wrote in message
news:RziVa.26206$o54.20626@lakeread05...
> Thanks Doug...
>
> To answer your questions:
>
> the magnet is attached to the right side of the spokes...the senser is
> attached to the inner (left) side of the right fork...so they pass each
> other.
>
> the distance is about one inch

One inch separation is way, way too much.
Move the magnet and sensor down closer to the axle. You want just enough
separation so that they don't touch as the magnet passes by. I usually shoot
for <1/8"

The magnet, as it passes by, operates a reed switch inside the sensor. The
cpu reads the 'clicks' as the sensor makes contact. Then computes the speed
from how fast the clicks happen.

Pete

07-28-2003, 08:36 PM

"Pete" <[Only registered and activated users can see links. ]> wrote in message
news:7SjVa.18456$[Only registered and activated users can see links. ].com...
>
> "Rich Reitman" <[Only registered and activated users can see links. ]> wrote in message
> >
> > the magnet is attached to the right side of the spokes...the senser is
> > attached to the inner (left) side of the right fork...so they pass each
> > other.
> >
> > the distance is about one inch
>
> One inch separation is way, way too much.
> Move the magnet and sensor down closer to the axle. You want just enough
> separation so that they don't touch as the magnet passes by. I usually
shoot
> for <1/8"

Yes, far too much distance.
By the way, you can check what the wiring is OK if you take the strongest
magnet you can easily find and wave it back and forth as near as you can
near the sensor. If this results in a speed reading, then the magnet
distance -- or a magnet that is too weak -- is to blame.

If you get no speed reading, the next likely culprit is not having the
computer fully snapped into the "cradle" so the sensors aren't making
contact.

Third likely scenario is that the wiring is shot. If it's been cut, you can
just link it back together like any other cut wiring.

07-28-2003, 09:00 PM

"Rich Reitman" <[Only registered and activated users can see links. ]> wrote in message news:<R_gVa.26198$o54.859@lakeread05>...
> Hello. If this question has been asked/answered a few times, I
> apologize...its my its day on this board.
>
> I received a Diamondback C8 Computer for my bike...after installing it
> today, it appears that nothing works. What I mean is, there is a digital
> readout, so the batteries work, but there doesn't seem to be any
> communication from the magnet and sensor to the computer. The directions
> are very bland and un-specific, especially when it comes to operation. Has
> anyone ever heard of this brand before? Or, are all two-button systems
> essentially the same thing? If so, how do I start and stop the readings
> with each ride?
>
> I even went to the "Diamondback" website and there wasn't any mention of
> this product.
>
> Thanks in advance.
>
> Rich

I had this same problem today because my batteries died.
you probally need to enter a code so the comperter knows your tire
size and how to judge miles. If you look on the tire you find a
number arragment like 26x1.9 or 27x2.125 or something like that.
someone gave me this handy website to look at today.
[Only registered and activated users can see links. ]
if you do need to enter a code look up on your tire what it says and
go to this website. Find your tire and match it with whats on the
chart and you should be able to follow the chart across to your code.
if you have any more questions about this and think I may be able to
help e-mail my hotmail account.
[Only registered and activated users can see links. ]
Hopefully you will find this very helpful.
Dale

07-28-2003, 09:22 PM

>The magnet, as it passes by, operates a reed switch inside the sensor.
>The cpu reads the 'clicks' as the sensor makes contact. Then computes
>the speed from how fast the clicks happen.

And this is why the compass doesn't work?

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