TomTom Rider

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chinachile
Posts: 13
Joined: Sun Apr 24, 2005 7:10 pm
Location: Frome Somerset

TomTom Rider

Post by chinachile »

Does any bright spark have any idea how to fix this little bastard to my R1100s with the supplied brackets or do I need to find/purchase a special mounting kit from somewhere?

I am completely done in from trying every configuration and am probably just too dim to see the obvious, Gaffa tape and sponge just looks too rough!

Many thanks in advance
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Ade B
Posts: 915
Joined: Sun Mar 21, 2004 6:11 pm
Location: London

Post by Ade B »

You could try a search in recommended products bit - there was some discussion of Garmin stuff lately..

or do what I do and stick it in the map pocket of your tank bag.

Having said that, presumably the Tom Tom rider is specifically for bikes.... most peculiar

Ade
2000 R1100S Sport
1980 Vespa P125X
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twodear
Posts: 104
Joined: Sat Sep 24, 2005 6:10 am
Location: Adelaide Australia

Rider mounting

Post by twodear »

The TomTom Rider is obviously for motorbikes with handlebars and not clipons. I've got one on my R1150GSA and the supplied mounting kit seems to hold Rider in place just fine. Now If I could only get the ba*tard to charge.

TomTom have shipped two mounts (which has the charger circuitry inside) to no avail. I've returned the whole kit which they shipped back as 'repaired' but the internal battery still goes flat. There is 12.5 volts at the plug to the mount with the engine off and over 14 volts with the engine running. No matter, the Rider battery still goes flat after four hours or so.

Buggered if I know what is going on. I hope yours works better than mine.
If enough is enough and more is better than too much should be just about right.
Me-109
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Post by Me-109 »

Sounds like it's not making contact with the unit. What sort of plugs/sockets are they? Can you bend any tabs out to take up any gaps?
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twodear
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Location: Adelaide Australia

Post by twodear »

Me-109 wrote:Sounds like it's not making contact with the unit. What sort of plugs/sockets are they? Can you bend any tabs out to take up any gaps?
Hi! There are four spring loaded pins on the cradle that line up with contacts on the back of Rider. The contacts all bear marks that show the pins are connecting. The plug that mates with the socket on my GS is making positive contact; I've tried moving it around to simulate vibration but my VOM continues to register an unbroken voltage potential.

My theory is that TomTom may have built in a large safety margin in the cradle. Rider only needs something like three volts. Perhaps something less is actually getting through the cradle, not enough to meet demand. With the GS engine running, 14.5 volts is input into the charger but I've seen as high as 16 volts on other vehicles. I've asked for a circuit diagram of the charger to see what potentials should be present on the pins of the cradle but that ain't happening. With the charger plugged in my VOM registers no voltage on any pin, however two of the pins seem to be earthed.
If enough is enough and more is better than too much should be just about right.
Me-109
Posts: 863
Joined: Mon Feb 06, 2006 12:13 pm
Location: Trauma Ward

Post by Me-109 »

If it is only power through the cable then it should really only need two wires, not four. I can't see it needing separate switched and permanent feeds.

Did you test for voltage with the springs depressed? There could be something not making contact once they are retracted into the plug as the current is likely to be passed through a spring to retain contact - at least some form of reduced contact area which increases the likelihood of no power actually getting to the contact point with the Rider. Assuming it's new, I'd just be taking / sending it back for another one.
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twodear
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Location: Adelaide Australia

Post by twodear »

Me-109 wrote:If it is only power through the cable then it should really only need two wires, not four. I can't see it needing separate switched and permanent feeds.

Did you test for voltage with the springs depressed? There could be something not making contact once they are retracted into the plug as the current is likely to be passed through a spring to retain contact - at least some form of reduced contact area which increases the likelihood of no power actually getting to the contact point with the Rider. Assuming it's new, I'd just be taking / sending it back for another one.
Thanks for the help 109. Good suggestion to try depressing the pins. the Rider they sent back had the protective cellophane sheet on the touch-screen so I believe they've they've actually sent a new one (I'll have to look at the S/N when I get back home).

I'm thinking that the TomTom somehow completes a circuit when it is in the cradle and switches on the charging cycle?? I've opened the back of one of the cradles and it seems to have more circuitry than needed for a simple voltage splitter. It is all conjecture until I can work out a circuit diagram.

Apologies to chinachile for hijacking this thread.

Jim
If enough is enough and more is better than too much should be just about right.
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