Maximum activity duration (storage space)
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Super feedback on how the 9PP handled the race. Fantastic result @MKPotts 5th male overall! Absolutely over that distance. https://live.opentracking.co.uk/spinerace23/
Did you use it for navigation also?
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The race was really, really good. It’s the third time I’ve done it - twice in winter, once in summer - so I knew what to expect.
The weather was good this year after the first few hours - cold (by UK standards) with lows down to about -6°C with snow and ice at all levels - but relatively light winds and clear skies. As always, managing sleep deprivation was probably the hardest thing - I only slept for 3.5hrs in a total time of 101hrs - and had to sleep for 20mins in the snow on the last night when I kept falling asleep on my feet. Unfortunately I had a tendon problem from about halfway which meant I had to walk a lot of the second half, but I managed not to slip too far back in the field.
Irunfar.com have posted a summary of the races (I’m the one shown crossing the finish line with my children). For anyone interested the race also publish excellent daily video summaries, on their Facebook page and YouTube channel. -
@matthinsh said in Maximum activity duration (storage space):
Super feedback on how the 9PP handled the race. Fantastic result @MKPotts 5th male overall! Absolutely over that distance. https://live.opentracking.co.uk/spinerace23/
Did you use it for navigation also?
Yes, I used it to navigate throughout the race and it was generally excellent. I also added key waypoints into the race gpx files - really easy to do with SA - and used ETE/distance to fields in the watch, which was very helpful for making decisions about whether to push on, sleep etc.
The only problem I had was on the last overnight stretch when the watch was struggling to orientate the navigation track and often doing so with a 180° error. I’m not sure if this was a compass calibration error - because I couldn’t find a way to manually calibrate it during an activity - so I had to switch to my handheld gps (mandatory to carry one).
I’ll test it a few times (once I’ve recovered) to see if the behaviour repeats itself. I also need to test the barometer because altitude readings were wrong throughout the race - consistently about 10% to high for the first recording and 10% too low for the second - but I wasn’t using altitude for navigation so it didn’t cause a problem in the race. -
Also to add, I had my S9P on my other wrist, recording in Endurance mode. FusedTrack produced a very impressive track, considering it was only getting a satellite fix every 60sec. Total distance was also close, showing 422km vs 435km with the S9PP in 1sec mode.
I can post links to the activities for comparison if anyone would find this useful. -
@MKPotts Congratulations!!! that was awesome. Read the report on iRunFar and sounds like a stout event this year.
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@MKPotts in the navigation options, lower button on navigation screen, you should find compass calibration.
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@isazi
Thank you. I’ve now found it under “navigation settings”. During my race when navigating a route, I’d looked under “compass” and couldn’t find it.
I assume the compass lost calibration when I was charging the watch, though I’m not sure why it didn’t ask me to calibrate it.
Hopefully, if I get track orientation issues in the future, calibrating the compass will fix it. It’s only ever been a problem when moving slowly on long races, I assume when moving more quickly gps is used for orientation. -
@MKPotts Well done on the Spine. You were one of the dots I was watching. I’m thinking about doing a race like TOR/Swiss Peaks/Spine with my S9PP next year so I’d love to see a link to your activity for the race.
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I have nothing constructive to say on the actual topic, but from someone who is half way through the couch 2 5k program the fact you can run 268 miles in just over 100 hours continuously is staggering!
I have huge respect for you
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'@MKPotts said in Maximum activity duration (storage space):
@isazi
Thank you. I’ve now found it under “navigation settings”. During my race when navigating a route, I’d looked under “compass” and couldn’t find it.
I assume the compass lost calibration when I was charging the watch, though I’m not sure why it didn’t ask me to calibrate it.
Hopefully, if I get track orientation issues in the future, calibrating the compass will fix it. It’s only ever been a problem when moving slowly on long races, I assume when moving more quickly gps is used for orientation.The other issue to consider is magnetic interference. If you have magnets on your pack to hold pockets together or to hold your bladder tube, these could interfere with the compass in the watch and require recalibration.
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@jasoncuddy said in Maximum activity duration (storage space):
@MKPotts Well done on the Spine. You were one of the dots I was watching. I’m thinking about doing a race like TOR/Swiss Peaks/Spine with my S9PP next year so I’d love to see a link to your activity for the race.
I’m not sure how to best share activities in SA, so if these links don’t work, let me know what I need to do.
Two activities recorded with S9PP:
https://maps.suunto.com/move/markpotts/63c71eb414f9267dafeea053
https://maps.suunto.com/move/markpotts/63c95010a3fc32176b5be341
(In the first one particularly, I didn’t pause the watch when inside checkpoints, so you’ll see wandering of the track at these points).
One activity recorded with S9P in endurance mode (so 60sec/FusedTrack):
https://maps.suunto.com/move/markpotts/63cbb13478d4d17415e65650 -
@James-Howes said in Maximum activity duration (storage space):
I have nothing constructive to say on the actual topic, but from someone who is half way through the couch 2 5k program the fact you can run 268 miles in just over 100 hours continuously is staggering!
I have huge respect for you
Thanks! It’s not as hard as it looks though - there’s a lot of walking, even if I hadn’t developed tendinitis. And I find that after a point, the distance no longer really matters, you can just keep going if you look after the basics (feet, food, sleep).
I’m not saying it’s easy but, in a different way, shorter ultras (e.g. fast, runnable 100km) are as hard/harder. Definitely don’t be put off if you’re thinking of something similar in the future. -
Hi,
An update about storage space on the S9PP after I’ve continued to use my watch as I get back to running.
The original estimate I gave was too low - I forgot that the watch firmware updated after I used it for the first time and this is why the first activity showed summary data only (not because it had been overwritten). My watch has just now overwritten (graphs/tables no longer available) the first activity I recorded after the firmware update. I had the following stored in the watch:
90.4hrs running in endurance mode - with power but no HR.
19.2hrs running in performance mode - power and HR data (Polar Verity Sense - I assume the same/very similar contribution to file size to the watch OHR but less than a belt because r-r interval data isn’t recorded).
7hrs walking in performance mode - HR data (watch sensor).
A total of about 117hrs of mixed use. From this I’d estimate at least 120hrs of activity storage space if recording in endurance mode without HR data.
All of the above assumes that the presence/absence of graphs and tables in the watch file still indicates that it does/doesn’t remain in the watch memory.
Hope this is useful to anyone else looking to record continuous multi-day activities.
