The Projects Page
last update:
12 Dec 1997
In this page you can find actually 2 project for biker:
the first, and the old one, is the INTERPHONE
a very nice thing to use when you are on the bike and you are not alone
well I use this object very little since I changed my bike, it was an Aprilia Pegaso 650 and
my girlfriend was very happy to ride with me on that, actually with CBR 900 RR she don't
like to much to have ride with me because if I think "Yawn, too slow...." she still think
"OOOOOh!!! ... too fast!!!!" :-)
So if you have any good suggestion for my interphone I will be very happy to input in mine ....
and if you have even a good suggestion for my situation with my girlfriend and my CBR ...
TELL ME!!
The second circuit is much more RACE !!!
It's an RPM meter, actually tested only for CBR 900 RR,
but it could be used for all the bikes with some changes at the input circuit
The idea of this object is just an expansion of an original idea taken from F1 RPM over-range signal used by
driver to avoid demage to the engine due to the too high RPM
When I started to develop this circuit I think at just 4 or 5 warning-lamp, well my step was a little wide and
now I've got a complete RPM meter with warning-light and 3 operating modes !
I'd like to share with you this simple project I build by myself,
done to "try" to solve one of the most frequent problems for biker with "bikerESS":
HOW to TALK while you are rideing ?!?!
hmmmm ... these work good only if you take a slow drive due to the wind noise,
but if you decide to pass through the sound-barrier they don't work at all!
So my idea is to use a vibration sensor instead of classic microphone, this sensor must be placed
on the throat, protected by the wind under some cloth or whatever you want
The result of this is that the sound you hear is just a little strange but you can hear it
at every speed you drive!
Here the project scheme:
The project is still in test, I tryed it few times, but it works good till 130 Km/h (~80 mph)
I'm not very expert in analog electronic (I know better the digital world) so I used in my
circuit the standard component suggested by Philips, without wonder myself about what can be
better!
So if there is someone interested in this project willing to share his know-how with me I
will very happy to learn!
I wanted to develop just an RPM over-range warning lights set, but during my work I discovered
that usually the analog-meter are slow.
If I quick open the throttle in "Neutral" gear on my CBR 900 RR I discovered that there are 3000 missing RPM
on the original RPM meter vs. my digital RPM meter (and a friend of mine say that Honda RPM are all balanced to
avoid this delay, well what about others !!!), naturally all this difference is reduced to 0 when you
let the engine to reach a constant rotation.
I don't know what could happened on other bikes, but I think that this circuit could be VERY USEFULL on bikes
that are WITHOUT a LOCK on the maximum RPM threshold, or just to be NOT-LIKE-ALL !
O.K. and now let's start to work!