Search found 140 matches

by KenS
Tue Sep 04, 2012 2:49 am
Forum: General Discussion
Topic: Accurate slope range
Replies: 13
Views: 9589

Re: Accurate slope range

I was also thinking numeric overflow but the issue could arise if you take your iBike off the mount and hold it upright (for instance while connecting it to your computer) causing it to crash with a divide by zero error. So extra code is needed to avoid that.
by KenS
Mon Sep 03, 2012 7:53 pm
Forum: General Discussion
Topic: Accurate slope range
Replies: 13
Views: 9589

Re: Accurate slope range

Not really wrong technically; but for practical purposes the simplification of using sin rather than tan is a sensible one to reduce the calculation time and eliminates possible divide by zero errors For angles less than about 15 degrees (or 26%), the difference between sin and tan is not very signi...
by KenS
Sat Sep 01, 2012 3:04 am
Forum: Newton Setup
Topic: Where's the Data?
Replies: 15
Views: 9151

Re: Where's the Data?

Another thought on this problem as it reminds me of some issues I had with my GenIII. Next time you get the problem check the gradient by pressing the Hill-Wind button. You may find it shows a big negative gradient. I used to get this on my GenIII if I didn't do a reset before a ride and it also see...
by KenS
Tue Aug 28, 2012 9:43 am
Forum: Newton Setup
Topic: Speed and Distance variance compared To Garmin 500
Replies: 10
Views: 6909

Re: Speed and Distance variance compared To Garmin 500

The max speed of 62.6 mph on the Newton is a pointer to something strange. Could be the speed magnet is not properly set up and you are getting a doubling up of the reading. With the Garmin reading speed from the GPS a couple of minutes of the Newton reading double your speed (60 odd mph instead of ...
by KenS
Sun Aug 26, 2012 4:48 am
Forum: Newton Setup
Topic: Speed and Distance variance compared To Garmin 500
Replies: 10
Views: 6909

Re: Speed and Distance variance compared To Garmin 500

The first and most obvious reason is a discrepancy between the wheel circumference recorded in Newton vs Garmin. I'm not familiar with the Garmin 500 but my 705 measures distance and speed using its GPS readings. It only uses the wheel circumference when the GPS is lost. But it also has a feature th...
by KenS
Wed Aug 22, 2012 6:15 am
Forum: Newton Setup
Topic: Analyze Route and Analyze Tilt Advanced View
Replies: 6
Views: 4752

Re: Analyze Route and Analyze Tilt Advanced View

The question is if there is a bug in the chart display resulting in the totally negative elevation traces in the charts. Question was not about the power calculation or dance locations. Isn't that just an error on the starting elevation? The Newton only measures the relative changes in elevation, n...
by KenS
Mon Aug 20, 2012 5:33 pm
Forum: Newton Setup
Topic: Where's the Data?
Replies: 15
Views: 9151

Re: Where's the Data?

Check your speed sensor is close enough to the magnet. If the speed sensor is not working your Garmin uses its GPS to determine speed (I'm assuming you have a Garmin with GPS) so appears to work normally but the iBike thinks you are stationary so records nothing. I've had this happen on several occa...
by KenS
Sun Aug 12, 2012 8:45 am
Forum: iBike Features
Topic: Merge with other data
Replies: 4
Views: 4576

Re: Merge with other data

Another issue is that when I want to use the ibike timestamps I always get the garmin ones. On the "Merge signals form another ride file" screen it doesn't make any difference whether I leave the "Time Stamp" box checked or unchecked under "Use from Other Ride File" - I...
by KenS
Sun Aug 12, 2012 8:36 am
Forum: iBike Features
Topic: Merge with other data
Replies: 4
Views: 4576

Re: Merge with other data

A few attachments to illustrate the issue: As you can see in the TCX file the lat and long use 6 decimal places. In the ibike CSV export there are only 5 decimal places. There is also a discontinuity in the ibike CSV file at 11:00:52 (row 108) where it skips back 8 seconds. By my own calculations, t...
by KenS
Tue Jul 24, 2012 12:54 am
Forum: Newton Setup
Topic: Bad Coastdown/Coast down procedure
Replies: 5
Views: 4268

Re: Bad Coastdown/Coast down procedure

For some reason each of your files shows you only got to 15 or 16 mph before you started to coast.
by KenS
Mon Jul 23, 2012 7:14 pm
Forum: Newton General Questions
Topic: Power readings sent to Garmin
Replies: 6
Views: 6226

Power readings sent to Garmin

When the Newton auto corrects its tilt or after things like a cal ride, tilt correction etc... with the GT key it sends a huge instantaneous power reading to the Garmin which messes up the average power and graphs in Training Center. By huge I mean 30000, 40000 even 60000+ Watts. Is it possible to s...
by KenS
Tue Jul 17, 2012 7:12 pm
Forum: Newton General Questions
Topic: Wind display
Replies: 5
Views: 4975

Wind display

I've noticed while out riding on a windy day that when my speed drops below 8 km/h (i.e. 5 mph) the Wind reading on the environment screen promptly drops to 0.0 But in the ride file the wind still seems to be recorded properly. Just curious as I was thinking it would be nice to be able to work out j...
by KenS
Mon Jul 16, 2012 9:52 pm
Forum: iBike Features
Topic: Merge with other data
Replies: 4
Views: 4576

Merge with other data

I've started using the iBike software feature that lets me merge with, in my case, a Garmin TCX trace of my ride to get Lat and Lon. I've found a couple of problems with this: When I use the Garmin timestamps the output often had them a bit jumbled, some timestamps are reused and out of order. Most ...
by KenS
Sat Jun 30, 2012 11:42 pm
Forum: Newton Setup
Topic: Workin?
Replies: 4
Views: 4135

Re: Workin?

The reading is instantaneous but my problem is that the necktop processor is slow to work out whats happening when the scale changes. Would be great to be able to fix the scale in one's profile or even better fix the lower and upper range
by KenS
Sat Jun 30, 2012 2:43 am
Forum: Newton Setup
Topic: Workin?
Replies: 4
Views: 4135

Re: Workin?

The dashes are a graph showing your instantaneous power. The number at the right shows the scale. If it shows, say, 400 then a full row of dashes is 400W and half a row is 200W
by KenS
Fri Jun 15, 2012 12:16 am
Forum: Newton General Questions
Topic: New Handlebar and Stem mount for Newton
Replies: 63
Views: 49072

Re: New Handlebar and Stem mount for Newton

Sounds like you've got the steerer tube mount
by KenS
Wed Jun 06, 2012 3:38 am
Forum: Newton General Questions
Topic: Newtons begin shipping today, June 4
Replies: 19
Views: 12159

Re: Newtons begin shipping today, June 4

Your iBike order was shipped to you on 06/05/2012
:D :D :D
by KenS
Thu May 24, 2012 3:00 am
Forum: Newton General Questions
Topic: At long last, the iBike Newton!
Replies: 165
Views: 124142

Re: At long last, the iBike Newton!

FelicianoVASA wrote:Anyone have received the new Ibike? :lol:
Anyone who has wont have a circuit board inside :P http://www.ibikeforum.com/viewtopic.php ... 378#p13055
by KenS
Wed May 16, 2012 8:47 am
Forum: Newton General Questions
Topic: Trade-In Conditions
Replies: 2
Views: 3841

Re: Trade-In Conditions

A bit of a moot point. The old twist-on mount won't work with the Newton anyway. Over in the other thread http://www.ibikeforum.com/viewtopic.php?f=51&t=2240&st=0&sk=t&sd=a&start=120#p13004 John says to return with the mount (but NOT sensors) But it seems it can be either the wir...
by KenS
Sat Apr 21, 2012 2:15 am
Forum: Newton General Questions
Topic: New Handlebar and Stem mount for Newton
Replies: 63
Views: 49072

Re: New Handlebar and Stem mount for Newton

Yes, the rechargeable mount will slide on to the new Newton mount. The rechargeable mount will NOT work with the Newton head... Thanks John but what we are really trying to find out is whether the Newton will slide onto the steer tube bracket. I've assumed it will based on the pictures but if it do...
by KenS
Fri Apr 20, 2012 8:53 pm
Forum: Newton General Questions
Topic: New Handlebar and Stem mount for Newton
Replies: 63
Views: 49072

Re: New Handlebar and Stem mount for Newton

Is the GenIII rechargable the steer tube mount compatable with the Newton ? No. John - Isn't the steer tube mount for the GenIII rechargeable was the same as the Dash - the one in this video http://www.youtube.com/watch?v=8wM2OJvznUA When I got my GenIII wireless rechargeable mount I had to order t...
by KenS
Wed Apr 18, 2012 2:40 am
Forum: Newton General Questions
Topic: At long last, the iBike Newton!
Replies: 165
Views: 124142

Re: At long last, the iBike Newton!

1. I cannot find a picture of the steerer tube mount and the stem mount will not available until June. Which is/will be the most aerodynamic? I do recall seeing a photo of the idash steerer tube mount some time ago and it looked like it stood very tall on top of the tube. I posted a link to the You...
by KenS
Mon Apr 09, 2012 9:26 pm
Forum: Newton General Questions
Topic: At long last, the iBike Newton!
Replies: 165
Views: 124142

Re: At long last, the iBike Newton!

I think I get the mount options now: There's the steer tube mount like this http://www.youtube.com/watch?v=8wM2OJvznUA There's the universal mount like this http://www.youtube.com/watch?v=iEg1O4Q6A_E Which can be ordered without sensors at http://www.ibikesports.com/detail.aspx?ID=106 And there's a ...
by KenS
Mon Apr 02, 2012 6:07 pm
Forum: Newton General Questions
Topic: At long last, the iBike Newton!
Replies: 165
Views: 124142

Re: At long last, the iBike Newton!

Can I obtain the GT upgrade at a later date? I'm assuming I can but want to be sure.
Right now I have the iSport and use the GT option to record and download the power data, but if I get the Newton I probably wont need to do that.
by KenS
Sun Apr 01, 2012 5:17 pm
Forum: Newton General Questions
Topic: At long last, the iBike Newton!
Replies: 165
Views: 124142

Re: At long last, the iBike Newton!

Is the steer tube mount the same as for the Gen III rechargeable wireless mount? No, the mount is a completely new system. <snip> 2) If I wanted extra steer tube mounts! Do I order the one for the dash? <snip> <snip> 2) Yes, the iDash steer tube mount is compatible. <snip> Just looking for some mor...
by KenS
Sun Apr 01, 2012 2:34 am
Forum: Newton General Questions
Topic: At long last, the iBike Newton!
Replies: 165
Views: 124142

Re: At long last, the iBike Newton!

Is the steer tube mount the same as for the Gen III rechargeable wireless mount?
Also, if I've got the GT option, can I transfer that to the Newton?
by KenS
Thu Mar 29, 2012 7:30 am
Forum: iBike Dash Setup
Topic: Calories X Joules Readings
Replies: 7
Views: 5923

Re: Calories X Joules Readings

I think you have a problem with your math. If 1 joule= 0.2390 cal then 569 kJ = 136 kcal and not 2,380 kcal (you divided by 0.2390 instead of multiplying) The human body is only about 25% efficient at producing energy, so to produce 1 kcal of energy you need to burn 4 kcal. To produce 136 kcal you n...
by KenS
Wed Feb 15, 2012 11:30 pm
Forum: Frequently Asked Questions
Topic: iBike iSport Gen 3
Replies: 5
Views: 5100

Re: iBike iSport Gen 3

I wonder if I get a commission :lol:
by KenS
Wed Feb 15, 2012 7:32 am
Forum: Frequently Asked Questions
Topic: iBike iSport Gen 3
Replies: 5
Views: 5100

Re: iBike iSport Gen 3

That was I. :)
by KenS
Tue Feb 14, 2012 6:13 am
Forum: Frequently Asked Questions
Topic: iBike iSport Gen 3
Replies: 5
Views: 5100

Re: iBike iSport Gen 3

Go into Setup; advance to Batt; then press the centre button