Notices
Electronics, Lighting, & Gadgets HRM, GPS, MP3, HID. Whether it's got an acronym or not, here's where you'll find discussions on all sorts of tools, toys and gadgets.

Digital Inclinometer

Old 08-03-10, 05:54 PM
  #1  
bktourer1
Senior Member
Thread Starter
 
bktourer1's Avatar
 
Join Date: Dec 2007
Location: Western Ma.
Posts: 867

Bikes: Diamondback "parkway" Spec. "expedition

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 25 Post(s)
Likes: 0
Liked 14 Times in 12 Posts
Digital Inclinometer

I would like to know if / where i can get a digital inclinometer?
just want to get an idea of the degree of the hills I ride.
I have seen the one with liquid & this is not what I want
bktourer1 is offline  
Old 08-04-10, 08:15 AM
  #2  
colleen c
I am a caffine girl
 
colleen c's Avatar
 
Join Date: Nov 2009
Location: Bay Area
Posts: 1,815

Bikes: 2012 Stumpjumper FSR Comp...2010 Scott CR1 CF...2007 Novara FS Float2.0...2009 Specialized Hardrock Disc...2009 Schwinn Le Tour GSr

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Have you tried doing a inclinometer search on Amazon. There are several digital incline meter. Problem is that the readout might be facing the wrong way depending how they read and how you mount it.

A cheaper meter would be a surface bubble Apps if you have an Iphone or a phone that can download apps. I have a Clinometer app on my Iphone that I can recalibrate to zero after mounting my Iphone to my handlebar. It can read it degree or slope and cost less than a dollar for the app.
colleen c is offline  
Old 08-04-10, 08:32 AM
  #3  
bktourer1
Senior Member
Thread Starter
 
bktourer1's Avatar
 
Join Date: Dec 2007
Location: Western Ma.
Posts: 867

Bikes: Diamondback "parkway" Spec. "expedition

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 25 Post(s)
Likes: 0
Liked 14 Times in 12 Posts
I have done a search already and can't find what I want, similiar to a liquid one that ACA sells.
I dont have the need for a phone that has apps
bktourer1 is offline  
Old 08-05-10, 08:49 PM
  #4  
gracehowler
Rod & Judy
 
gracehowler's Avatar
 
Join Date: Jun 2009
Location: Montrose, CO
Posts: 566

Bikes: Specialized S-works E-5, Davinci joint venture , CoMotion Pangea

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 20 Post(s)
Likes: 0
Liked 7 Times in 7 Posts
I have been thinking of a VDO cycle computer, as they have a model which reads incline, never used it though.
R
gracehowler is offline  
Old 08-08-10, 02:16 PM
  #5  
Raptor1956
Senior Member
 
Join Date: Nov 2008
Location: Salt Lake City
Posts: 116

Bikes: Trek Madone 4.7

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Likes: 0
Liked 11 Times in 4 Posts
A digital level, or for that matter, any level, is not going to work as you would like if the bike is moving. A level is fine if the bike is stationary, but as soon as it begins to move the measurement of inclination will be effected by acceleration and a moving bike is ALWAYS accelerating.

Some of the cycle computers calculate grade (inclination) by measuring the elevation change over the distance change but they are not going to be accurate to any supper fine degree over a short distance.

There are some mapping programs, like Delorme TopoUSA that will tell you elevation anywhere along the route you plot. In 2004/2005 I travelled the western USA in an old motorhome that would overheat on long climbs so I used TopoUSA to plot routes with less climbing. I travelled south from Cheyenne Wyoming to Colorado Springs and wanted to head west towards Salt Lake City but TopoUSA showed that all routes west through Colorado had massive climbs to 10,000 feet or more so I wound up heading back towards Cheyenne and then heading west on I-80 because it had easier climbs.


Brian
Raptor1956 is offline  
Old 08-10-10, 11:30 AM
  #6  
tarwheel 
Senior Member
 
tarwheel's Avatar
 
Join Date: May 2007
Location: Raleigh, NC
Posts: 8,900

Bikes: Waterford RST-22, Bob Jackson World Tour, Ritchey Breakaway Cross, Soma Saga, De Bernardi SL, Specialized Sequoia

Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 196 Post(s)
Likes: 0
Liked 4 Times in 3 Posts
Don't the Garmin GPS cyclo-computers show % slope?
tarwheel is offline  
Old 09-02-10, 03:10 PM
  #7  
SMH707
Senior Member
 
Join Date: Jun 2009
Location: Northern IL
Posts: 51
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Get an iSport powermeter from www.ibikesports.com-I use a iSport GT and save the data on an Garmin Edge 500. The iSport does what you want and is the most accurate way to measure instantaneous % grade. I use it all the time (have measured up to 19.0% grades, real-time). This is even more accurate than post processing barometric pressure altitude data from my experience, for finding the peak grades of a ride (and it measure the peak grade for a ride also).
SMH707 is offline  
Old 09-03-10, 10:02 AM
  #8  
tatfiend 
Gear Hub fan
 
Join Date: Nov 2008
Location: Reno, NV
Posts: 2,829

Bikes: Civia Hyland Rohloff, Swobo Dixon, Colnago, Univega

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
The new Cateye Adventure cycle computer includes a slope readout. No idea how instantaneous it is as there is also an altimeter function.

https://www.cateye.com/en/product_detail/604
__________________
Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro

Visit and join the Yahoo Geared Hub Bikes group for support and links.
https://groups.yahoo.com/group/Geared_hub_bikes/
tatfiend is offline  
Old 09-03-10, 12:03 PM
  #9  
dougmc
Senior Member
 
dougmc's Avatar
 
Join Date: Jul 2008
Location: Austin, TX
Posts: 3,039

Bikes: Bacchetta Giro, Strada

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Raptor1956 View Post
A digital level, or for that matter, any level, is not going to work as you would like if the bike is moving. A level is fine if the bike is stationary, but as soon as it begins to move the measurement of inclination will be effected by acceleration and a moving bike is ALWAYS accelerating.
You exaggerate the problem.

Yes, acceleration and deceleration will affect the results. But not very much -- you get up to speed and while you'll speed up and slow down a bit with each pedal stroke, the meter will find an average value. (This might become a problem if you're standing on the pedals in a high gear and a low cadence powering up the hill, but it might not too.)

The meter will be inaccurate as you accelerate and brake, but most of the time you're trying to go a pretty average speed.

Some of the cycle computers calculate grade (inclination) by measuring the elevation change over the distance change but they are not going to be accurate to any supper fine degree over a short distance.
Yes, my Garmin Edge 705 does this. Its reasonably accurate as long as the hill is long and steady and I'm going reasonably fast, but there's a significant lag.

Something that actually measure the angle your bike is at is likely to be more accurate with less lag. Depending on how it's designed, it may require a few seconds of pretty constant speed to settle, but most hills that you'd really care about take more than a few seconds to climb anyways.

Last edited by dougmc; 09-03-10 at 12:06 PM.
dougmc is offline  
Old 09-04-10, 11:37 AM
  #10  
Raptor1956
Senior Member
 
Join Date: Nov 2008
Location: Salt Lake City
Posts: 116

Bikes: Trek Madone 4.7

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Likes: 0
Liked 11 Times in 4 Posts
Yes, if you average over several pedal strokes and the average speed is more-or-less constant then measuring the angle many times over that interval will provide a reasonably accurate indication of the AVERAGE slope over that interval. However, it will NOT provide a true instantaneous slope reading for the reason I've already stated -- acceleration. If the software were smart enough to know when to start and stop the averaging you should get decent results but if it does it for a set time window, and that window is short, then the indication is likely to be much less accurate.

In practice, it isn't critical to know the angle over really short intervals as you and your bikes momentum will average out very short variation in slope. I am OK with the results my 705 gives me...


Brian
Raptor1956 is offline  
Old 09-04-10, 02:30 PM
  #11  
dougmc
Senior Member
 
dougmc's Avatar
 
Join Date: Jul 2008
Location: Austin, TX
Posts: 3,039

Bikes: Bacchetta Giro, Strada

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Raptor1956 View Post
Yes, if you average over several pedal strokes and the average speed is more-or-less constant then measuring the angle many times over that interval will provide a reasonably accurate indication of the AVERAGE slope over that interval.
Averaging over one pedal revolution is sufficient -- and if your sensor is mechanical, its own inertia could do the averaging on it's own -- no software needed.

Still, I'm not aware of anybody actually selling such a device meant for use on a bike. They certainly do sell devices meant for finding the slope of something, and it's easy enough to do with a level and some rulers, but I've never seen anything meant for a bike. It could be done, however -- it mounts to your top tube (close to level already) then is calibrated somehow (ride in circles and it measures the angle constantly if it's electronic, or manually with a level) ... but I haven't seen it.

My 705's grade measurement is certainly adequate, but it could be done a lot more simply and cheaply. A spirit level would do it, once mounted on a bar level (with shims if needed) and with marks put on the glass to indicate the grade when the bubble is at various spots. Ideally, it would be long enough to give readings for angles between -20% and +20% or so accurate to within 1 or 2%.
dougmc is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Norboo
Electronics, Lighting, & Gadgets
12
04-30-16 08:42 PM
TheLibrarian
Electronics, Lighting, & Gadgets
3
08-31-15 08:29 PM
socalrider
Electronics, Lighting, & Gadgets
6
08-22-13 03:42 PM
kevmk81
Road Cycling
4
04-04-12 11:54 AM
noglider
Classic & Vintage
1
12-08-10 09:41 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.