Possible to climb standing ?

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wheelz
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Possible to climb standing ?

Post by wheelz » Mon Mar 04, 2013 3:47 pm

HI,
I have a Fortius with the latest TTS3. I have no problem with the motor for anything I did so far (lets say about 15%), but at about 6% if I stand on the pedals I get the jerky sensation. I'm not sure why it does that ? Less of a round pedal stroke when I do that ? but I was thinking it's when I stand that the tire on the roller might be moving more, thus losing traction.

Any solutions or experience ?

thanks in advance !

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malfukt
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Re: Possible to climb standing ?

Post by malfukt » Mon Mar 04, 2013 3:54 pm

Just the difference in your effort as pedal stroke not as smooth, the FORTIUS brake is not a smooth as the GENIUS anyway whilst climbing even when in the saddle, unless you can maintain cadence in excess of 60 (keep average of 250w), don`t worry it is normal for fortius to feel this way.

It could also be you need more tension on the roller brake (by adjusting the screw/nut underneath) & re-calibrating.. what calibration figure do you have, somewhere between +1 & +3 is ideal with minimum of 110psi in tyre after a 10 minute warmup of Tyre/Brake
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BobBreton
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Re: Possible to climb standing ?

Post by BobBreton » Mon Mar 04, 2013 9:13 pm

As malfukt said the magic number for cadence is 60 rpm, if you stay above that it should not be jerky. I also found out that if you stay over 10 km per hour it is much smoother.

I was climbing a 17,6% hill yesterday as I was doing Tour of Flanders 2007 and it was smooth all along. I got some jerkinees for about 10 seconds when I dropped under 10 kph and under 60 rpm. Then I kicked myself in the but and started pedaling faster and it all went back to normal.

I see this limitation as the trainer telling me to stop being a wuss and get my to legs going lol :lol:

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mcorn
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Re: Possible to climb standing ?

Post by mcorn » Mon Mar 04, 2013 9:58 pm

I don't think it is a cadence issue as much as speed. Under 10 mph/16 kmh the Fortius is inherently rough. I suspect your speed is low, which is why you want to stand.

Due to design of their brakes, the Genius and Imagic are much smoother at lower speeds.

wheelz
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Re: Possible to climb standing ?

Post by wheelz » Mon Mar 04, 2013 10:17 pm

I was just testing. As I said, sitting I do not have any issues. I do shift 1-2 gears before standing and find it better even if it lowers the cadence. I would actually do the same outside.

Thanks for the answers. I will try to notice the speed but again nothing to fault when seated.

I do have no issues standing when I punch the end of a hill.

I will also take note to warm up longer before calibrating.

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