Dear forum members,
I am new to this forum, that why I am asking for your understanding. (at the beginning I tried to find a similar topic / discussion but I can't found nothing, that why I ask you for support)
I am the new user of the "KURA" Trainer Elite in combination with the Polar V800 sports computer.
After several trainings, I noticed that the speed and the distance traveled is wrong (many times higher than it actually should be).
In the computer settings: Polar sets up:
 crank length: (172.5)
 circumference wheel (2150)  Same like in 28''  bike has)
it seems logical that the value of the circumference of the wheel should be different  after the bike is put in the KURA Trainer  nevertheless I'm not able to set lower value in my POLAR V800 Computer: like 1000.
Dear members have you found similar problems  how can I solve this problem?
Any ideas for support?
Dear Elite Service Specialists  can you have any idea for this problem  how to solve it?
Best Regards
Wini
ELITE KURA + POLAR V800  Speed problem
Moderators: Elite Admin S, Elite Admin M
 Elite Admin S
 Posts: 1057
 Joined: Tue Nov 08, 2016 10:18 am
Re: ELITE KURA + POLAR V800  Speed problem
Hi
You have to insert in your Polar a circumference value that also consider the internal ratio of the trainer.
In your case, you have to set a circumference equal to your wheel circumference divided by 3.43.
So, for example, if your wheel measure 2100mm, on the Polar you have to set a circumference of 612mm.
Not all the Polar (or the Garmin) allow to insert a so low circumference value unfortunately.
Check with the manufacturer if it is possible for your model.
Regards
You have to insert in your Polar a circumference value that also consider the internal ratio of the trainer.
In your case, you have to set a circumference equal to your wheel circumference divided by 3.43.
So, for example, if your wheel measure 2100mm, on the Polar you have to set a circumference of 612mm.
Not all the Polar (or the Garmin) allow to insert a so low circumference value unfortunately.
Check with the manufacturer if it is possible for your model.
Regards
Re: ELITE KURA + POLAR V800  Speed problem
Thank You for your explanation and support.
I already contact Polar  and now I'm whait for the information from them.
I will inform you what will be the final results of our descoution.
Best Regards
Marcin
I already contact Polar  and now I'm whait for the information from them.
I will inform you what will be the final results of our descoution.
Best Regards
Marcin
Re: ELITE KURA + POLAR V800  Speed problem
I have the same problem with the Polar V800 and the Elite Direto. The speed shown on my watch is 10x higher than the speed shown in Zwift. Is there a know fix for this issue? The circumference in the V800 is set to the same value as the in the Direto. Zwift shows the correct speed with the same settings.

 Posts: 1
 Joined: Thu May 10, 2018 4:20 pm
Re: ELITE KURA + POLAR V800  Speed problem
Hi! Same issue there with V800 and Elite Direto: we would need to divide the circumference in mm by 12.1, but in Polar V800 we cannot set values so low for the circumference... Very disapointing...
 Elite Admin S
 Posts: 1057
 Joined: Tue Nov 08, 2016 10:18 am
Re: ELITE KURA + POLAR V800  Speed problem
Guys,
as speed is calculated on the number of turns of the fan (where the magnet is) and not on the number of wheel turns, you have to divide the wheel circumference by the ratio of the trainer (12.1). If Polar doesn't allow you to insert this value, contact Polar and ask if there's a possible solution.
Regards
as speed is calculated on the number of turns of the fan (where the magnet is) and not on the number of wheel turns, you have to divide the wheel circumference by the ratio of the trainer (12.1). If Polar doesn't allow you to insert this value, contact Polar and ask if there's a possible solution.
Regards
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