Search found 7 matches

by DaveTriska
Sat Jun 24, 2017 1:48 pm
Forum: Newton TT
Topic: CDA estimate hopelessly out
Replies: 10
Views: 16845

Re: CDA estimate hopelessly out

For the benefit of the forum users, John is being more than a legend and deserves a shout out for it
by DaveTriska
Sat Jun 24, 2017 9:05 am
Forum: Newton TT
Topic: CDA estimate hopelessly out
Replies: 10
Views: 16845

Re: CDA estimate hopelessly out

This is the arm and bar position, I was worried about the noisy air in between the bars if the newton was mounted there, hence the side mounting.

Alas can't get RWS for love nor money here.
by DaveTriska
Sat Jun 24, 2017 9:01 am
Forum: Newton TT
Topic: CDA estimate hopelessly out
Replies: 10
Views: 16845

Re: CDA estimate hopelessly out

Ah.... That'll be it, it's a wahoo speed sensor :-( This is the mounted Newton. Rare as hens teeth in the UK shops now and unable to get the TT mount kit here, had to make one using a 3d printed garmin 'male' attachment and a normal TT mount reversed to go to the outside of the bars. Are Wahoo senso...
by DaveTriska
Sat Jun 24, 2017 7:30 am
Forum: Newton TT
Topic: CDA estimate hopelessly out
Replies: 10
Views: 16845

Re: CDA estimate hopelessly out

Thanks that's really helpful. Dunno why the speed sensor was dropping - its on the front wheel. Will have a fiddle

I'll try and get a ride in today with the cal file then the normal ride after
by DaveTriska
Sat Jun 24, 2017 1:45 am
Forum: Newton TT
Topic: CDA estimate hopelessly out
Replies: 10
Views: 16845

Re: CDA estimate hopelessly out

Oh and yes a TT bike, full aero kit etc.

Not too fussed if it isnt BANG on the money for accuracy purposes as I am more interested in differences but the discrepancy led me to think either i am doing something wrong or the sensor is broken
by DaveTriska
Sat Jun 24, 2017 1:43 am
Forum: Newton TT
Topic: CDA estimate hopelessly out
Replies: 10
Views: 16845

Re: CDA estimate hopelessly out

hi, in a wind tunnel. I assure you it is correct; my coach has a lower one at 0.175 so not the lowest I've ever seen. i am just an obsessive TT rider ;-) As I was saving the file I ran the estimate again - now saying 0.100 ???? Normally I'm not such a technical dunce but I seem to be doing something...
by DaveTriska
Fri Jun 23, 2017 2:07 am
Forum: Newton TT
Topic: CDA estimate hopelessly out
Replies: 10
Views: 16845

CDA estimate hopelessly out

I had a couple of goes doing calibration rides to use the CDA feature on a Newton. Knowing what my cda actually is, it was hopelessly out despite the newton being clear of obstructions. When coming to the calibration check, the DFPM was 100s of watts under looking at the graph and the CDA was given ...