Flightdeck Interference

[Sam Salt]

We have a wireless Shimano Flightdeck on the front of the tandem along
with a B & M Oval Senso Plus headlight which uses an LED.

I have discovered that when the LED is lit the speed and distance
readings of the Flightdeck don't function.Obviously there is some
interference of the computer signal between the sensor on the front fork
and the head unit caused by the LED.

I wondered if anyone else had had this problem and if they overcame it
as it has me stumped at the minute or is it,as I suspect, something we
will have to put up with.

Thanks.

 

[Camilo]

On Jun 27, 6:53 am, Sam Salt <[email protected]>
wrote:
> We have a wireless Shimano Flightdeck on the front of the tandem along
> with a B & M Oval Senso Plus headlight which uses an LED.
>
> I have discovered that when the LED is lit the speed and distance
> readings of the Flightdeck don't function.Obviously there is some
> interference of the computer signal between the sensor on the front fork
> and the head unit caused by the LED.
>
> I wondered if anyone else had had this problem and if they overcame it
> as it has me stumped at the minute or is it,as I suspect, something we
> will have to put up with.
>
> Thanks.

Can't help with your specific problem, but for what it's worth, you
can pick up a wired mount for flight deck from ebay sellers for pretty
cheap. Icyclesusa.com also sells them for pretty cheap. I had to
replace my wireless mount and went with wired because it was so much
cheaper and also easy to install. I hadn't had interference problems
though.

 

[Sam Salt]

Camilo wrote:
> On Jun 27, 6:53 am, Sam Salt <[email protected]>
> wrote:
>> We have a wireless Shimano Flightdeck on the front of the tandem along
>> with a B & M Oval Senso Plus headlight which uses an LED.
>>
>> I have discovered that when the LED is lit the speed and distance
>> readings of the Flightdeck don't function.Obviously there is some
>> interference of the computer signal between the sensor on the front fork
>> and the head unit caused by the LED.
>>
>> I wondered if anyone else had had this problem and if they overcame it
>> as it has me stumped at the minute or is it,as I suspect, something we
>> will have to put up with.
>>
>> Thanks.
>
> Can't help with your specific problem, but for what it's worth, you
> can pick up a wired mount for flight deck from ebay sellers for pretty
> cheap. Icyclesusa.com also sells them for pretty cheap. I had to
> replace my wireless mount and went with wired because it was so much
> cheaper and also easy to install. I hadn't had interference problems
> though.

Thanks for the Suggestion.

Sam Salt

 

[Bob Chambers]

Sam Salt wrote:
> We have a wireless Shimano Flightdeck on the front of the tandem along
> with a B & M Oval Senso Plus headlight which uses an LED.
>
> I have discovered that when the LED is lit the speed and distance
> readings of the Flightdeck don't function.Obviously there is some
> interference of the computer signal between the sensor on the front fork
> and the head unit caused by the LED.
>
> I wondered if anyone else had had this problem and if they overcame it
> as it has me stumped at the minute or is it,as I suspect, something we
> will have to put up with.
>
> Thanks.

I have had interference with a Polar 725X and a Lightbrain Twin Cycle
Light Pulse width modulated controller hooked up to dual 10 W halogen
lights. The adjacent wired Flight Deck computer was OK, whilst the
Polar went mad. With the bike stationary on the bike repair stand and
the headlights working my heart rate was 250 (should have been around 75
resting - but zero as I wasn't measuring it!) and the bike was doing 25
km/hr. Must have been a whole lot of RF radiating from the cables &
controller.

--
Bob C

--
Posted via a free Usenet account from http://www.teranews.com

 

[Doug Smith W9WI]

On Thu, 28 Jun 2007 16:16:46 +1000, Bob Chambers wrote:
> I have had interference with a Polar 725X and a Lightbrain Twin Cycle
> Light Pulse width modulated controller hooked up to dual 10 W halogen
> lights. The adjacent wired Flight Deck computer was OK, whilst the

Pulse-width controllers can indeed generate a fair amount of RF - I'd
think the Flightdeck (/Polar) would operate around 433MHz where there
shouldn't be enough controller RF left to cause problems, but never say
never with regard to stray RF...

Not being a night rider I'll have to beg considerable ignorance... is the
Lightbrain a single unit? Or are there cables connecting multiple units?

"Ferrite choke cores" (available at Radio Shack) can do wonders to filter
this kind of interference. Following the provided instructions, put one
core on each cable as close to the body of the controller (the unit with
the knob) as possible.

 

[M-gineering]

Sam Salt wrote:
> We have a wireless Shimano Flightdeck on the front of the tandem along
> with a B & M Oval Senso Plus headlight which uses an LED.
>
> I have discovered that when the LED is lit the speed and distance
> readings of the Flightdeck don't function.Obviously there is some
> interference of the computer signal between the sensor on the front fork
> and the head unit caused by the LED.
>
> I wondered if anyone else had had this problem and if they overcame it
> as it has me stumped at the minute or is it,as I suspect, something we
> will have to put up with.
>
> Thanks.

Try moving sensor and wire for the headlight apart as far as possible,
ie move the sensor over to the lh side of the fork.

--
/Marten

info(apestaartje)m-gineering(punt)nl

 

[Bob Chambers]

Doug Smith W9WI wrote:
> On Thu, 28 Jun 2007 16:16:46 +1000, Bob Chambers wrote:
>> I have had interference with a Polar 725X and a Lightbrain Twin Cycle
>> Light Pulse width modulated controller hooked up to dual 10 W halogen
>> lights. The adjacent wired Flight Deck computer was OK, whilst the
>
> Pulse-width controllers can indeed generate a fair amount of RF - I'd
> think the Flightdeck (/Polar) would operate around 433MHz where there
> shouldn't be enough controller RF left to cause problems, but never say
> never with regard to stray RF...
>
> Not being a night rider I'll have to beg considerable ignorance... is the
> Lightbrain a single unit? Or are there cables connecting multiple units?
>
> "Ferrite choke cores" (available at Radio Shack) can do wonders to filter
> this kind of interference. Following the provided instructions, put one
> core on each cable as close to the body of the controller (the unit with
> the knob) as possible.
>

The Lightbrain is just the controller (see
http://lasertagparts.com/lightbrain/index.htm) it dangles on the wiring
under the bars in a film container. Headlights (twin) are on either side
of the stem and are connected to the controller with shielded cables.
There is also a shielded cable for the operating pushbutton. I'll try
the cores, Tandy=Radio Shack down here in OZ) but I still may need to do
something about the controller and internal wiring nestling unshielded
in the film container. (Can't see the Polar readout or the Flightdeck
display at night anyway!)
--
Bob C

--
Posted via a free Usenet account from http://www.teranews.com

 

[Sam Salt]

M-gineering wrote:
> Sam Salt wrote:
>> We have a wireless Shimano Flightdeck on the front of the tandem along
>> with a B & M Oval Senso Plus headlight which uses an LED.
>>
>> I have discovered that when the LED is lit the speed and distance
>> readings of the Flightdeck don't function.Obviously there is some
>> interference of the computer signal between the sensor on the front
>> fork and the head unit caused by the LED.
>>
>> I wondered if anyone else had had this problem and if they overcame it
>> as it has me stumped at the minute or is it,as I suspect, something we
>> will have to put up with.
>>
>> Thanks.
>
> Try moving sensor and wire for the headlight apart as far as possible,
> ie move the sensor over to the lh side of the fork.


Marten,

Have just tried that,moved the sensor over and as high up the fork as
possible,still the same.

Having thought about it I wondered if the problem may lie with the
magnets in the Schmidt dynohub causing the interference.

Anyway with the sensor as far away as it can go we will have to put up
with it.

Thanks,

Sam Salt