I have the Edge 520 and a Powertap hub. No issues. The 520 keeps recording during an interval session, even without a GPS signal. In fact, there is an "indoor" mode you can set to avoid searching for GPS signal if you are on your indoor trainer.

No idea on the Bolt. But I know that when I raced with my 520 in Norseman, which has a few tunnels (including one that is almost 2km long) where you lose GPS, the timer kept going the whole time.

I don't know what would have happened if I stopped pedaling. But I do know that the 520 has an accelerometer (as well as GPS; this is what it uses for incident detection) and I think that may also be part of how it determines if you are moving or have stopped even if it doesn't have a GPS signal.

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"Non est ad astra mollis e terris via." - Seneca | rappstar.com | FB - Rappstar Racing | IG - @jordanrapp

I don't have powertap any more which is why issue has popped up

They both have auto-stop settings based on speed. You can turn it off or on.

/ end thread.

Jordan- do you have your auto pause on or off

Auto-pause is on.

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"Non est ad astra mollis e terris via." - Seneca | rappstar.com | FB - Rappstar Racing | IG - @jordanrapp

My 520 was giving me an increasing number of dropouts, mostly under tree cover. I also had a lot of mid-ride/interval reboots. I replace it with a Bolt and have been quite pleased. Being able to change the settings through a mobile app is a really nice feature.

There was a thread on same topic a few weeks ago: http://forum.slowtwitch.com/...F_P6397620/#p6397620

I've had half a dozen or so Garmin devices. Bought a Bolt and it's best sports computer I've ever had. My only gripe when I bought it was lack of ANT-FEC control of trainers other than a Kickr. But they fixed that. I literally have zero gripes in the 3 months I've owned it.

Same here, bought a bolt and love it. The zoom in feature is great!!