Tyre pressure and temp sensor

[tony.mon]

I bought one of these for pennies- about £24- mainly because I needed to replace the usb port.
My Quadlock usb port isn't waterproof, that's what you get for being an early adopter. A few days after I fitted my usb port they announced a contactless one.

This has a voltage display as well, and us made for motorbikes and is claimed to be waterproof. Let's see how long it lasts...

The tyre sensors weigh a bit, I'm tempted to get the front at least rebalanced with it fitted.

And yes, I know the tyres need pumping up a bit!

[MacV2]

Isn't a bit hard to read being sideways...?

[sirch345]

Isn't a bit hard to read being sideways...?

Is this a bit better for you Mac

It looks the part Tony

Where does the tyre air pressure sensors fit, inside the wheel or on the valve

Chris.

[tony.mon]

On the valve.
They have a button cell but only send via low intensity Bluetooth when there is movement, so hopefully will last a while.

Thanks for turning the pics, I forgot to turn the phone sideways when taking pics for the forum.

[tony.mon]

That's odd, are we back to double posting again?
It's happened twice today.

[Cadbury64]

I've been using these across three bikes over the past few years and they work really well at catching an imminently flat tyre well before you feel anything amiss. Batteries last 1-2 years generally, but can be a little challenging to locate.

My only small gripe is the weight of the transmitter valve caps, if your rubber valve stem is old and bit more rigid (cue sniggers from the back of the class) then all is well, but I had some stems replaced with fresher, more flexible ones and the weight of the cap caused the stem to bend over, at one point I thought I saw a crack forming in the rubber but that turned out to be paranoia. To put my mind at rest I now have 90 degree alloy valve stems installed.

[tony.mon]

Yes, I also have the alloy 90 degree ones fitted.

[sirch345]

On the valve.
They have a button cell but only send via low intensity Bluetooth when there is movement, so hopefully will last a while.

I'm guessing that means the sensor screws down on the top of the valve pressing on the pin to open the Schrader valve

Thanks for turning the pics, I forgot to turn the phone sideways when taking pics for the forum.

No problem At least you know what you need to do to get them the right way up

I've been using these across three bikes over the past few years and they work really well at catching an imminently flat tyre well before you feel anything amiss. Batteries last 1-2 years generally, but can be a little challenging to locate.

My only small gripe is the weight of the transmitter valve caps, if your rubber valve stem is old and bit more rigid (cue sniggers from the back of the class) then all is well, but I had some stems replaced with fresher, more flexible ones and the weight of the cap caused the stem to bend over, at one point I thought I saw a crack forming in the rubber but that turned out to be paranoia. To put my mind at rest I now have 90 degree alloy valve stems installed.

That would have been my next question, but you're one step ahead of me

Chris.

[tony.mon]

You're right, the pin opens the schrader valve slightly, allowing the sensors to sample the air temp and pressure.

[Cadbury64]

On the valve.
They have a button cell but only send via low intensity Bluetooth when there is movement, so hopefully will last a while.

I'm guessing that means the sensor screws down on the top of the valve pressing on the pin to open the Schrader valve

Chris.

The sensors have some sort of motion detection in them; they (and the head unit display) go dormant when the bike is stationary, but you can usually wake them by spinning a wheel (or rolling the bike). That may be the only downside to using them with 90 degree stems as I think the motion detection is less sensitive when the caps are on their sides, but they still work OK.

[sirch345]

You're right, the pin opens the schrader valve slightly, allowing the sensors to same air temp and pressure.

On the valve.
They have a button cell but only send via low intensity Bluetooth when there is movement, so hopefully will last a while.

I'm guessing that means the sensor screws down on the top of the valve pressing on the pin to open the Schrader valve

Chris.

The sensors have some sort of motion detection in them; they (and the head unit display) go dormant when the bike is stationary, but you can usually wake them by spinning a wheel (or rolling the bike). That may be the only downside to using them with 90 degree stems as I think the motion detection is less sensitive when the caps are on their sides, but they still work OK.

Thanks for the detailed information

Chris.