Open your Clocks

Derick · Mar 1, 2016

If you need to get into the outer shell of the speedometer unit for any reason here are some detailed instructions on how to do so:

Once the clock is removed from your bike, set yourself up with a clear work area and a mug of tea or coffee. Patience is a virtue when attempting this.
Tools required are a couple of flat blade butter knifes and a small torx driver.
Using the Torx driver remove the small black screws from the back of the speedometer unit.
Using one of the knives, wedge the blade into where the unit joins together and start to prise apart. This is easier said than done because the join is glued with silicone sealant.
Once the gap is big enough, wedge the second knife in together with first knife and continue prising apart.
With a bit of time, patience, brute force and some swearing the unit should split apart. Few!
Remove the old silicone sealant.
When the unit is put back together, renew the silicone with a low modulus silicone sealant (this type is also used in the window framing industry).
Or, do what I did and refit the screws and use insulation tape to seal up the join. Just in case I need to open up the clock again.
Job Done!

Rizla · Mar 1, 2016

Funny you should post this up.

I was out on Sunday and noticed a little condensation on the inside of my clocks :thumbup

Derick · Mar 1, 2016

yeah Mine keeps fogging up. It a common problem with the Tuono V4 and V2.
Although there is loads of info about this problem their isn't so much about how to get into the V4 Tuonos clocks.
I bit the bullet and opened up mine and cleaned out under the glass which was starting to stain.
I may add some extra vents at some time but I'm happy with it for now.

Rizla · Mar 1, 2016

Derick said:
yeah Mine keeps fogging up. It a common problem with the Tuono V4 and V2.
Although there is loads of info about this problem their isn't so much about how to get into the V4 Tuonos clocks.
I bit the bullet and opened up mine and cleaned out under the glass which was starting to stain.
I may add some extra vents at some time but I'm happy with it for now.

I wonder if there is room in there to put one of those little silica bags that you find in all kinds of packaging these days to prevent the contents getting damp.

I have little ones in my vitmamin tubs etc.

Derick · Mar 1, 2016

There is space under the RPM dial face. This is a thin printed card which covers a small hollow. A small silica gel pack could probably be placed under the dial face.

hilift · Mar 2, 2016

I wouldnt recommend putting silica desicant packs in your clocks ,

it was the norn at work until a few years ago to put dessicant packs into underground cable joints . when the bags absorbed moisture they would hold it and have disasterous consequences . creating soaking wet cable joints .

i fear the same situation would apply and bugger up your clocks , stick with the tried and tested method of a tiny vent hole underneath

Rizla · Mar 2, 2016

hilift said:
I wouldnt recommend putting silica desicant packs in your clocks ,

it was the norn at work until a few years ago to put dessicant packs into underground cable joints . when the bags absorbed moisture they would hold it and have disasterous consequences . creating soaking wet cable joints .

i fear the same situation would apply and bugger up your clocks , stick with the tried and tested method of a tiny vent hole underneath

Thanks for that :thumbup

Paul D · Mar 3, 2016

hilift said:
I wouldnt recommend putting silica desicant packs in your clocks ,

it was the norn at work until a few years ago to put dessicant packs into underground cable joints . when the bags absorbed moisture they would hold it and have disasterous consequences . creating soaking wet cable joints .

i fear the same situation would apply and bugger up your clocks , stick with the tried and tested method of a tiny vent hole underneath

Exactly! They will absorb water for a while but once saturated will retain it until removed and dried out! I took my Gen1 clocks apart recently to replace a bulb and found a silica gel sachet. But removed it before re assembling!

At least Gen1 clocks are a doddle to take apart compared to V4 clocks by the sound of it! Just 8 (approx) screws. Just remember only to retighten gently or the plastic mounting pillars break off or threads strip.

I also sealed off the two rear panel vent holes with silicon sealing compound plus around the white connector to stop moisture getting in. Will be interesting to see if that works!

Derick · Mar 3, 2016

I've been having a close look at the inside of my V4 clock. I think the lack of air flow is the key to the problem. Moisture will always get in no matter how sealed up you think you can make them. I'm about to mod mine and will start another post when I've done.

Paul D · Mar 4, 2016

Interesting. I wondered that. Bit like the need to vent the soffits in a loft! I'll see if sealing mine makes a difference. If not, my plan is to open the vent holes more... but I have read of guys on Tuono forums who had success by sealing the units!

The Gen 1 clocks have two 4mm diameter vent/drain tubes, plus a gap around the white connector, which all let damp air in!

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