Bike computers

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Nick1972
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Bike computers

Postby Nick1972 » Mon Feb 18, 2013 12:11 pm

This may seem like a silly question but do bike computers work in the dark? I ride to work in the daylight and it works fine. I ride on the weekends again in daylight and its fine but when I ride home from work in the dark and it doesn't work..

Any thoughts?

Supermurph09
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Re: Bike computers

Postby Supermurph09 » Mon Feb 18, 2013 12:13 pm

Most will have a backlight facility that you can turn on.

Danlikesbikes
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Re: Bike computers

Postby Danlikesbikes » Mon Feb 18, 2013 12:50 pm

Supermurph09 wrote:Most will have a backlight facility that you can turn on.


^-^ what he said.

Personally I tend to find even with the back light on the glare from other road users, street lights can obscure the view a bit for me.
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dab_32
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Re: Bike computers

Postby dab_32 » Mon Feb 18, 2013 13:05 pm

I have a Knog Beetle light on my helmet so when I look down it lights up my edge 500, no need for a back light.

Nick1972
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Re: Bike computers

Postby Nick1972 » Mon Feb 18, 2013 13:46 pm

Seeing the display isn't the problem, it doesn't register speed or distance..

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Pross
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Re: Bike computers

Postby Pross » Mon Feb 18, 2013 14:14 pm

Nick1972 wrote:Seeing the display isn't the problem, it doesn't register speed or distance..


Seriously? It's not solar powered or something is it? They either work by a magnet passing a sensor or from a GPS signal so I don't see why being daylight or dark would make the slightest difference :?

crankycrank
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Re: Bike computers

Postby crankycrank » Mon Feb 18, 2013 14:19 pm

If you're using a light at night mounted close to a wireless computer it can cause interference.

Nick1972
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Re: Bike computers

Postby Nick1972 » Mon Feb 18, 2013 14:21 pm

Its battery powered. Thats the only explanation I can think of. Its so strange..

Simon Masterson
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Re: Bike computers

Postby Simon Masterson » Mon Feb 18, 2013 19:50 pm

Supermurph09 wrote:Most will have a backlight facility that you can turn on.


Among GPS computers this may be the case, but there remain plenty of simple options for those of us who prefer something simpler, and many of them aren't backlit...

SmoggySteve
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Re: Bike computers

Postby SmoggySteve » Mon Feb 18, 2013 19:53 pm

Simon Masterson wrote:
Supermurph09 wrote:Most will have a backlight facility that you can turn on.


Among GPS computers this may be the case, but there remain plenty of simple options for those of us who prefer something simpler, and many of them aren't backlit...


Sigma ones are. It isnt a solar powered one is it :-)

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Rolf F
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Re: Bike computers

Postby Rolf F » Mon Feb 18, 2013 19:54 pm

crankycrank wrote:If you're using a light at night mounted close to a wireless computer it can cause interference.


Indeed - though my experience of this was more getting warp factor speeds as the computer registered the lamp flashes as well as the magnet.

Easy one to check - I suspect your light is permanently on. Try setting it to flash and see your speed rocket up to 40mph.

The solutions are to buy a light with a metal case (eg my Raleigh RSP Asteris don't cause interference), to get a wired computer or to get a GPS.
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Simon Masterson
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Re: Bike computers

Postby Simon Masterson » Mon Feb 18, 2013 20:33 pm

SmoggySteve wrote:
Simon Masterson wrote:
Supermurph09 wrote:Most will have a backlight facility that you can turn on.


Among GPS computers this may be the case, but there remain plenty of simple options for those of us who prefer something simpler, and many of them aren't backlit...


Sigma ones are. It isnt a solar powered one is it :-)


My Sigma one isn't. :lol:

I'm actually David Dickinson though, and I power mine using the powerful radiation from my face.

SmoggySteve
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Re: Bike computers

Postby SmoggySteve » Mon Feb 18, 2013 20:37 pm

My Sigma one is so half true I guess

Nick1972
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Re: Bike computers

Postby Nick1972 » Tue Feb 19, 2013 13:31 pm

Thanks for all your replies. I adjusted the position of my light on ride home last night and it started registering. Hopefully thats the problem solved.

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Mikey41
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Re: Bike computers

Postby Mikey41 » Tue Feb 19, 2013 19:58 pm

Quite a lot can interfere with some wireless computers. I was waiting at lights behind a Peugeot one day and my computer was reading 23mph :lol:

The Garmin does not seem prone to this, which is a good thing.
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