Simple speedometer?

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mobi

Well-Known Member
Location
S E England
Why cycle computers are so complicated? I mean attaching sensor in wheel and programming etc?

Can it not be a small cheap device which you can fix on handlebar and will show speed via GPS?

The smartphone apps do it fine. But as my phone costs £££ don't want to strap it to handlebar. On other hand, Garmin GPS sat navs cost more than my bike!

I expected a simple device to show speed and distance via GPS which can be bought under £20 or so.

If I could buy a smartphone at that price, I might strap it to handlebar :-)
 

MontyVeda

a short-tempered ill-controlled small-minded troll
why not keep the phone in your pocket?
 

raindog

er.....
Location
France
I've got the smallest, neatest and most simple Sigma Sport computers on both my bikes. I only use them for distance travelled, although they indicate speed too. They cost me about €14 each a few years ago (about £11) superbly reliable - done 25500 k with one of them and it's never missed a beat.
 

KneesUp

Guru
Why cycle computers are so complicated? I mean attaching sensor in wheel and programming etc?

Can it not be a small cheap device which you can fix on handlebar and will show speed via GPS?

The smartphone apps do it fine. But as my phone costs £££ don't want to strap it to handlebar. On other hand, Garmin GPS sat navs cost more than my bike!

I expected a simple device to show speed and distance via GPS which can be bought under £20 or so.

If I could buy a smartphone at that price, I might strap it to handlebar :-)

Quite. Why go to all the complication of having a reed switch and a magnet so the computer can tell how many times your wheel has turned when you can instead simply receive broadcast messages from four or five mult-million pound satellites in space and use those to triangulate your location numerous times per minute, from which you can calculate your speed? :smile:

Aldi do a cheap computer every now and again. The basic model from any of the big manufactures will do what you want. I've had no problems with Cateye ones in the past.
 

FeistySquirrel

Professional Jelly Baby Decapitator
Most cheap ones, the only programming you have to do is enter the circumference of your wheel (so it can calculate distance etc). Pick them up for about a tenner from Asda etc.
 
U

User6179

Guest
I do that but then I can only check it occasionally.

What are you checking for ?

Best thing I ever did was lobbing the computer and just recording run on the phone in my back pocket.
 

MikeG

Guru
Location
Suffolk
So hang on, let me see if I have this right. The OP thinks that a magnet on the spokes and a £10 "computer" is complicated, but a device which receives signals from an array of dozens of satellites in geo-stationary orbit, (costing billions of pounds to build and launch, and made by rocket scientists), which does thousands of calculations per second, adjusting for time and elevation...........is simple?

Have I got that about right?
 
Problem with getting a £10 GPS speedo is that it would consume far more power than a simple reed switch/magnet jobby so would either need replaceable batteries or built in rechargables. Either way it would either be not doable for low cost (buit in) or high cost of ownership (replaceables)
 

Rickshaw Phil

Overconfidentii Vulgaris
Moderator
As mentioned above, if it's simplicity you want, surely a few minutes spent checking the wheel size and programming it in is worth it for lack of time spent replacing/recharging batteries on a GPS device. The batteries for the speedometers on my bikes were last replaced in 2011 and 2012.:thumbsup:
 

jack smith

Veteran
Location
Durham
Is it true that the Brytons fit on the same mounts as garmin @Nigelnaturist ? As I am after a computer I can. Out on an out front mount but want a cheap one, although the bryton would be way over budget still but could be considered later thisyear
 
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