I attempted to do the Burgberg sprint ride…
But when i got to the first sprint at 690 watts my trainer increased resistance until i couldn’t pedal. I was in erg mode, i tried a few more times with same result. I then changed out of erg mode which was better but not great. Is this ride not suitable for erg mode
Hmmm. That’s odd. If I may ask, at what cadence were you at when the resistance for the sprint started to come on? I Only ask because I was doing a workout at one time and I was at a such a low cadence during the recovery section that when the resistance started to come on for the next HIT interval it made it very tough to pedal but as I increased the cadence it got, well, “easier” to pedal. There is a correlation between cadence and resistance. I assume that since this was a sprint interval that you were increasing cadence during the sprint so did it feel like it got “easier” to pedal as the cadence increased or harder?
Oh, and welcome to the community!
Thanks for the welcome to community…i usual spin at 90 and was on this occasion…my peak sprint power is 860… I knew it would be challenging…I tried the first 4 sprints in erg…the change to .5 which was still difficult…but manageable…
Sorry I didn’t answer completely , the resistance just kept building until I could pedal no more. I thought at first it was a case of when it locks up when you stop pedaling and try to restart, but cadence was high and I tried to increase it before the expected 690 target
@bob_goodkill In general ERG mode is more difficult for sprints. Try to increase cadence just before the sprint so you are on top of the power change and then continue to increase heading into the sprint.
In general, switching to level mode is better for sprints but it depends on how dramatic the change is from the prior power setting.
Have you tried another workout with sprints, such as this one (picture) to see if you get the same results?
I have found with my KickR Snap that if I increase cadence right before the resistance starts to come on that it dramatically effects “when” the resistance comes on so I have to actually wait until I feel the resistance coming on before increasing cadence. With that being said, if the app tells me that I’m going from, say, 120w at 80rpms to 220w at 90rpms at the 10sec mark, sometimes I can gradually increase the cadence within that 10sec window and the resistance comes on in time BUT if tells me that I’m going from 120w at 80rpms to a sprint at, say, 700w at a cadence of 120rpms and try try to get “on top of the gear” at 120w before the sprint starts the resistance will never come on.
@Eric Sure - good point as it will definitely vary by trainer as well. I did the below sprint workout yesterday with a Kickr V6 and was able to manage it in ERG mode but where the trainer doesn’t cooperate level mode is probably the better selection.
Thanks for all advice I will try another sprint ride …sounds like level mode might do the trick
You didn’t say which Wahoo trainer you are using, but if you are on the SNAP you WILL have to switch to level mode. If you are using any of the other trainers, a support ticket is in order as your trainer is continuing to apply resistance and it should be leveling off. One thing to look at first is are you on the latest and greatest firmware release as some issues were resolved in the latest few with sudden power application.
Why do I HAVE to switch level mode? I’ve never had issues with sprints while in ERG mode on my SNAP unless I try to ramp up the cadence before the power/resistence starts to come on.
I did testing on the SNAP for a local bicycle shop and it was unable to pull hard efforts after a relatively easy one in time for the effort. We also had issues with partial lockups. Even Wahoo recommends doing short efforts, like Violator, on level mode.
I.will check later and then check for any firmware updates. It’s a kicker core and it was second hand to me…so maybe 4 years old
@GPLama had an update video recently on the CORE and the version there was 1.5.36. You should be on that version or later to avoid some nasty firmware issues.
So checked my firmware and I had been using an older version…so updated it. I had never performed a spin down test …so I thought I’d try it, it failed everything. Is the spin down test necessary, I’m sure I read somewhere it was not
On the CORE, it’s recommended that you don’t perform a spin down test unless it is recommended by CS. The latest firmware updates enable automatic calibration and will solve most issues over a few rides.
Thanks I thought as much
