Wireless bike computers

terryc

On Thu, 08 May 2008 13:04:37 +0000, Ken & Stace wrote:

> Ive had one for a year now. The only problem I've had is if it is in ON mode
> when you take the bike on a train, the speedo imediately goes to 99kmh and
> stays that way for the whole train trip (even if the train stops at
> stations) with a large number of kms being registered on the odometer.

Would you mind less if the train was really going that fast?

John Henderson

Ken & Stace wrote:

> Ive had one for a year now. The only problem I've had is if it
> is in ON mode when you take the bike on a train, the speedo
> imediately goes to 99kmh and stays that way for the whole
> train trip (even if the train stops at stations) with a large
> number of kms being registered on the odometer.

Is 99 km/h just a maximum reading for your unit?

On at least one ride, my wired VDO C10 registered a maximum of
369.0 km/h. Given a wheel size setting of 2050 mm, that means
switching at exactly 50 Hz mains frequency.

John

thefathippy

On May 8, 2:30 pm, "verb" <v...@nobodyathome.com> wrote:
> "thefathippy" <thefathi...@gmail.com> wrote in message
>
> news:2508210a-33aa-4a92-a6f8-ab792e29a8fa@h1g2000prh.googlegroups.com...
> On May 8, 12:45 pm, "verb" <v...@nobodyathome.com> wrote:
>
>
>
> > "thefathippy" <thefathi...@gmail.com> wrote in message
>
> >news:b25b933f-f5eb-4d90-9e20-e7131474b344@z24g2000prf.googlegroups.com...
> > On May 8, 11:17 am, TimC <tconn...@no.spam.accepted.here-
>
> > astro.swin.edu.au> wrote:
> > > On 2008-05-08, ha...@uow.edu.au (aka Bruce)
> > > was almost, but not quite, entirely unlike tea:
>
> > > > Hi all,
>
> > > > my computer has died and I was considering getting a wireless
> > > > computer. I don't want to spend too much and I was thinking about the
> > > > Echowell Echo W2. It has all the functions I want and isn't too
> > > > expensive.
>
> > > > So how much of a problem is interference and drop-out with the
> > > > wireless models? Riding is usually a sole effort for me, so no need to
> > > > worry about "cross-talk." Pros, cons, all comments gratefully
> > > > received.
>
> > > What's the point of wireless? I doangeddit.
>
> > > Pros:
>
> > > · Clean lines?
>
> > > Cons:
>
> > > · But you don't notice the "lines" anyway, because you could just wrap
> > > the cable around your front brake cable.
>
> > > · You have to turn your computer on in the morning, otherwise it
> > > doesn't record anything. You can't just start rolling, and the reed
> > > switch causes the computer to turn itself on, because if it was
> > > running the receiver permanently, it would drain the battery more.
>
> > > · Extra batteries. Twice the chance of failure in any given ride.
> > > Except more, because transmitters aren't exactly light weight on
> > > batteries.
>
> > > · There's a transmitter involved, and usually some metal in the
> > > sightline. Constantly, they're as unreliable as buggery.
>
> > > · And for the roadies, they weigh an extra 0.3 nanograms over the
> > > cabled version.
>
> > > In summary. Why?
>
> > They're cool?
>
> > Seriously, for mtbs, they're brilliant. No wires to get ripped off by
> > stray foliage.
>
> > Except my Aldi one sucked big time. I was doing 99 kmh regularly (max
> > reading), managing incredible speed uphills, and covered some
> > incredible distances - even when I wasn't moving. Strangely, my wife's
> > Aldi wireless computer works perfectly - luckily for me!
>
> > Tony F
>
> > 99kmph uphill?
>
> > BULLSHIT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>
> ummm... errr... well, derrr.
>
> That was my point when I wrote "I was doing 99 kmh regularly (max
> reading), managing incredible speed uphills, and covered some
> incredible distances - even when I wasn't moving." My Aldi computer
> suck-diddly-uck-sucked!
>
> Tony F
>
> - errr sorry , im retarded :-/

hehe, no wuckas. I have my own set of socks that say "ignore me, I'm
an idiot". ;^)

Tony F

thefathippy

On May 8, 5:12 pm, "hemyd" <myd!!!...@optusnet.com.au> wrote:
>
> Ha! I'm glad you mentioned the Aldi. Mine did the 99kph bit, and random
> speed readings in between - all even when standing still. I communicated
> with the suppliers, a place in Switzerland (yes! Not in China!). A
> distinguished gentleman (at least I pictured him that way) informed me that
> the meter can pick up interference from many sources. On further
> investigation I found that the random speeds were being generated by a
> blinking LED front light. I moved the light and the meter away from each
> other, and that fixed the fault - or so I thought. unfortunately there was
> still the odd burst of random speed here and there, with the odometer
> advancing in time. Basically the unit can pick interference from a variety
> of sources.
>
> I haven't returned the meter. I'm using the speedo in conjunction,
> currently, with the temperature meter. I've yet to see if the temperature
> meter is picking up any readings from a nearby stove.... or volcano
> somehwre in the world.....
>
Hmmm... Sunspots perhaps, or magnetic resonations, or my heartbeat, or
that stove or volcano you mention. Maybe funny smells, or cicadas
drumming.

I was about to say that I've been out in the bush, well away from
civilisation, and still had 99 kmh speeds shown, despite being well
away from any potential interference, when I remembered my phone. I
guess that *could* be the cause of the problems - I never tested it by
riding without my phone (stored in my backpack). Bah. I'll either
spend more money for a decent wireless system, or weight until Aldi
has their wired computers on sale again - that one only failed due to
my own stupidity - I pulled out the wires removing it from the bike. I
did appreciate their temperature and individually resettable max speed
functions.

Tony F