General Discussion Triathlon Talk » garmin 920 pace Rss Feed  
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2016-04-18 12:35 PM


439
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nashville, Tennessee
Subject: garmin 920 pace
I've been using the 920 for a couple of months now and have been pretty satisfied except for the run pace. Has anybody else had trouble with your 920 not picking up pace accurately. Sometimes it will just have a pretty significant lag. But sometimes I just know I'm running way faster than what my watch reads. The 910xt never had that issue. It picked up changes in pace almost immediately.


2016-04-18 2:01 PM
in reply to: mchadcota2


304
100100100
Subject: RE: garmin 920 pace
I have a similar issue. but mine seems like the delay is based off the increments.

I notice with mine is that i seems to calculate in 5sec increments. For instance my 310xt would calculate down to my normal runs at say 9:12, 9:11,9:09...etc 1sec increments. With the 920 it calculates at 9:05, 9:10, 9:15 an so on. I have not looked at any settings to see if it's changeable, but it is annoying.
2016-04-18 2:02 PM
in reply to: mchadcota2

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137
10025
Birmingham, Alabama
Subject: RE: garmin 920 pace
I have the Fenix 3 and I have that trouble, but it seems especially bad after the software is updated.

I just sort of ignore the pace until I'm several miles into a run. For what the watch costs it should work right away, but it's not that big of a deal to me.

The funny thing is it will tell me I'm running about a minute/mile slower than reality, even after I've finished my first mile. So, the pace will read something like 8:30, then I'll finish the first mile in 7:30 and the pace doesn't really adjust any. By mile 3 it seems to know how fast I'm actually running and on my last HM it was spot on for most of the race.

2016-04-19 9:04 AM
in reply to: marti038


439
10010010010025
nashville, Tennessee
Subject: RE: garmin 920 pace
Yeah I shouldn't worry about it I guess. But anytime I pick up the pace for a minute and run hard I want to know exactly what I'm running. So when I know I'm running a 6:30 pace or faster, and I'm working hard and huffing and puffing, and I look at my watch and it says 7:15, its kinda discouraging mentally. I like to see those good numbers. Maybe I'll just run with the 910.
2016-04-19 10:23 AM
in reply to: mchadcota2

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261
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Subject: RE: garmin 920 pace
I never use the instant pace and instead go with lap pace. It can be off for the first few seconds of a lap (mine is set to lap every mile), but settles down rather quickly.
2016-04-19 10:37 AM
in reply to: Toefuzz

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Deep in the Heart of Texas
Subject: RE: garmin 920 pace

Instant pace has never really been spot on accurate.  The devices used to smooth the changes internally and purport to show exact pace.  Now most of the Garmin units compute instant pace in increments of :05.  Either way, at the end, you will get a true pace down to :01.

I find the lag greatest at the beginning or after a walk break.  Once I get going, I find the instant pace fairly accurate.



2016-04-19 10:49 AM
in reply to: Hook'em

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Pro
6520
50001000500
Bellingham, WA
Subject: RE: garmin 920 pace

The instant pace has been all but unless for me.  I just turned it off.  I do like to monitor my pace pretty closely so I've set my audible alarm at every quarter mile and my time split at every half mile.  Works very well for me.

2016-04-19 1:39 PM
in reply to: mchadcota2

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47
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Subject: RE: garmin 920 pace

Does your garmin pick up the GPS signal from the get go? I had a problem with my 920 not picking up the GPS for probably 10-15 minutes at the beginning of my runs, which naturally caused the run pace to be complete crap. Then I connected the 920 to my wifi at home, and after that it finds the GPS signals in a matter of seconds and the pace is fine as well.

2016-04-19 3:52 PM
in reply to: MikaelEriksson


439
10010010010025
nashville, Tennessee
Subject: RE: garmin 920 pace
Mine picks up GPS very quick. So am I the only one that wants to know instant pace. For example if I am doing intervals and I know I want to maintain a 6:00 pace for say a 30 sec-1 min interval, I want to make sure I'm hitting that pace. I can understand for longer runs not being concerned with it but for short intervals I rely on it pretty heavily.
2016-04-19 4:22 PM
in reply to: #5177700

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Member
622
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Franklin, TN
Subject: RE: garmin 920 pace
I would just use lap pace. It settles in pretty quickly on my Forerunner 220. For intervals, make sure you set your laps to "open" so you get proper lap splits.
2016-04-20 8:42 PM
in reply to: Toefuzz

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Subject: RE: garmin 920 pace
Originally posted by Toefuzz

I never use the instant pace and instead go with lap pace. It can be off for the first few seconds of a lap (mine is set to lap every mile), but settles down rather quickly.


This. Instant pace is going to be worthless with the amount of GPS error there is. GPS is accurate to 3-4 meters so if it's trying to calculate pace every few seconds based off those data points...well it's not going to be pretty. Whereas it can do some smoothing later on with a lot of data points to figure out about what line you were running. Lap pace is way better. It normally initially starts off at the previous lap time and then adjusts quickly after that.


2016-04-21 12:37 PM
in reply to: #5178034


1

Subject: RE: garmin 920 pace
I use my 920xt in a similar manner, for example tempo intervals, and have the same issue. I'm thinking I may have to use a different metric such as cadence.
2016-04-23 2:01 PM
in reply to: mchadcota2

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Coach
9167
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Stairway to Seven
Subject: RE: garmin 920 pace
here's a good article about GPS accuracy. After reading it the main question i would have if there is a difference bweteen your 910 and the 920 is did Garmin use a different reciever in the 920?

Beyond that many factors are out of anyone's control (like weather) and the range if inaccuracy is going to make instantaneous, short range, short effort or small area running speed pretty inacurrate.

If you need paces for short efforts based on your perceived effort, best to use a stopwatch and a track.
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