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Old 09-18-13, 09:24 AM   #1
Still Pedaling
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Wireless speedo - heart rate monitor that will fit a 20" wheel (Brompton)

While on my ride this morning I thought of how it would be a good idea to have an on-board device to monitor speed, mileage, but most important to me -- heart rate. Considering that I do have some issues with the ticker, it might be prudent to keep it in check while out riding. I recall a number of years back having a simple speedo by CatEye. I would like a wireless one that will fit or work with my Brommie. I know there will be an attachment/sensing device that will need to be placed on the forks (front or rear), but I'm concerned that it might get in the way when the bike is folded. Any thoughts? Here's one I saw on Performance Bike:

http://www.performancebike.com/bikes...400023__400023

Would something along that line work?

Cheers
Wayne

Edit: I messed up on the title. It should refer to 16" wheels -- not 20". Unfortunately I can't edit the title of the the thread once its posted. Something for the operators to think about perhaps .

Last edited by Still Pedaling; 09-18-13 at 03:25 PM. Reason: Wrong reference on thread title.
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Old 09-18-13, 09:44 AM   #2
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The Brompton does not have a 20" wheel though (it has 16" wheels), so if you get a bike computer for a 20" wheel, your numbers will be slightly off. Although, I know that some higher end bike computers allow you to enter specific wheel size parameters.

Of course, the incorrect wheel size issue won't affect the heart rate numbers all that much (..I think?) ...it really only would affect speed and mileage.

Last edited by darukhan; 09-18-13 at 09:55 AM.
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Old 09-18-13, 10:00 AM   #3
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Check its compactable with 16" wheels and that the range of the sensor transmitter will get to where you place the computer.

Cycle computers are cheap. Heart rate moniters are cheap, however if you combine the two it is very expensive and less flexible consider a watch type moniter that you can also use in the gym and attach to your bike with a little thought possibly?
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Old 09-18-13, 10:14 AM   #4
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Here is a report with a similar wireless (no cadence) unit http://brommieskywalker.blogspot.com...reless-on.html

We have used the strada wireless for years (looks similar to the one you posted but no cadance and heart rate). Never used a cadence sensor. I presume it is optional if you don't want to install the second sensor. Our strada wireless unit is simple, reliable and has long battery life (it turns itself on and off automatically).

My GPS (Garmin 705) happened to have heart rate function and I used it few times for curiosity (on a second thought, I should use it more, especially on harder routes). It has a strap that you put around your chest, directly on the skin. The strap has a battery and transmitter that transmit the signal to the head unit. A little bit annoying but you get used to it.

I would search Amazon.com for reviews, for example here http://amzn.com/B007IGSWIG . Also, if you buy from a place that accepts returns, you can see how it works for you with minimal risk.

BTW, there are other kinds of portable heart rate monitors, at different price points. http://www.amazon.com/Heart-Monitors...8&node=3407971
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Old 09-18-13, 11:02 AM   #5
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Garmin GPS units are a great idea here (so you don't need a wheel speed sensor at all).

A lot of them come with speed/cadence sensors and you can have it auto-calibrate the wheel size (it counts wheel revolutions and distance and does the calculation for you).
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Old 09-18-13, 11:12 AM   #6
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Quote:
Originally Posted by darukhan View Post
The Brompton does not have a 20" wheel though (it has 16" wheels), so if you get a bike computer for a 20" wheel, your numbers will be slightly off. Although, I know that some higher end bike computers allow you to enter specific wheel size parameters.

Of course, the incorrect wheel size issue won't affect the heart rate numbers all that much (..I think?) ...it really only would affect speed and mileage.
Sorry, you're right. You have to excuse us old folks -- we often go through our day having the odd brain fart. Would you not agree that this is or was a good one.
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Old 09-18-13, 11:34 AM   #7
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A lot of them come with speed/cadence sensors and you can have it auto-calibrate the wheel size (it counts wheel revolutions and distance and does the calculation for you).
Wow, great info, Charles! I didn't realize that this was even an available option on some units!? I have only ever used the cheap-o $15 to $20 units with minimal options.

Actually, I never look at my cycle computer anymore since I started using the Strava Cycling app on my (Android) smart phone (also available for iPhone).
It uses GPS to track my rides, speed, elevation, etc.. etc.. has a heart rate option if I purchase a monitor to sync with my phone.

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Sorry, you're right. You have to excuse us old folks -- we often go through our day having the odd brain fart. Would you not agree that this is or was a good one.
No worries, Wayne. I believe that experience, wisdom, and endurance have given "old folks" the right to automatically be excused when encountering the occasional, odd brain fart.
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Old 09-18-13, 11:47 AM   #8
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look for ones that let you input the wheel radius or diameter in MM.

I wouldn't bother with a 2 battery wireless .. never have ..

the HRM I've used is just paying attention .


and getting off and walking if it feels too high .

HRM chest belts + a wrist watch monitor are out there , the runners
that do a data based training like them . never been one.

I have a computer on my touring bike , just as an Odometer .

I never buy batteries for it between tours.

data junkies need data .. good luck with that, kids.

Last edited by fietsbob; 09-18-13 at 11:56 AM.
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Old 09-18-13, 12:06 PM   #9
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Quote:
Originally Posted by cplager View Post
Garmin GPS units are a great idea here (so you don't need a wheel speed sensor at all).

A lot of them come with speed/cadence sensors and you can have it auto-calibrate the wheel size (it counts wheel revolutions and distance and does the calculation for you).
Wow, that sounds awesome. How does it do that without putting a sensing device on the forks and the little sensor on the spoke? So all you do is attach the Garmin GPS to your handlebars and that's it -- no other attachments needed?
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Old 09-18-13, 12:11 PM   #10
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No worries, Wayne. I believe that experience, wisdom, and endurance have given "old folks" the right to automatically be excused when encountering the occasional, odd brain fart.
Thank you for your understanding . Brain farts come during the day, but what worries me is when they come very often and close together. That's what's referred to as "oldtimer's disease" . Memory issues are many. If I forget something I simply tell the person -- "Actually I have a photographic memory. Problem is -- I've run out of film".
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Old 09-18-13, 12:16 PM   #11
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Wow, that sounds awesome. How does it do that without putting a sensing device on the forks and the little sensor on the spoke? So all you do is attach the Garmin GPS to your handlebars and that's it -- no other attachments needed?
Yup. It uses GPS to record where you've been and figures out how fast you're going. You can even upload your routes to their (and others) websites. It is particularly useful if you have more than one bike.

(You can use your smart phone with GPS the same way - a cheap bike computer is to use your old smartphone.)
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Old 09-18-13, 01:16 PM   #12
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Some of the smart phone apps I have looked at also have the heart rate monitor option.

It obviously requires a separate chest strap.

Not sure how smart phone calibrates with the chest strap, radio scan I guess.

Can katsma gives us the low down on the garmen verse smartphone app please?

I have considered getting a garmen, but I can attach my phone to my bars for the cost of a 10 bracket. Many of the same features are on he appS?

Is it like a car gps. Its just simplier causes it all it does? So its a better user interface?
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Old 09-18-13, 01:26 PM   #13
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Quote:
Originally Posted by bhkyte View Post
Some of the smart phone apps I have looked at also have the heart rate monitor option.

It obviously requires a separate chest strap.

Not sure how smart phone calibrates with the chest strap, radio scan I guess.

Can katsma gives us the low down on the garmen verse smartphone app please?

I have considered getting a garmen, but I can attach my phone to my bars for the cost of a 10 bracket. Many of the same features are on he appS?

Is it like a car gps. Its just simplier causes it all it does? So its a better user interface?
Charles mentioned using a Garmin GPS unit on the bike, so I got in touch with a Garmin tech support rep. Sure enough, it will give you all the info you get on a regular cyclometer except you don't need sensor devices attached to the bike. They also have the navigation ability as well. The Garmin support rep mentioned that they are coming out with a new device called the Edge Touring Plus. It comes with a handlebar attaching device so all you do is clip the GPS unit on the bars and off you go. Its apparently very sensitive giving it accurate speed and distance readings. It allows for the use of a separate heart monitor that will be available for this unit. One other thing I like about the unit is I can also use it in the car as it navigates the same as a regular GPS unit without the voice direction ability. here's the link:

https://buy.garmin.com/en-US/US/into...rod143677.html

Cheers
Wayne
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Old 09-18-13, 01:30 PM   #14
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interesting topic. my mates and i always go with wireless speedos as it is well known that the wired type are infamous for causing massive chafing.

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Old 09-18-13, 01:38 PM   #15
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interesting topic. my mates and i always go with wireless speedos as it is well known that the wired type are infamous for causing massive chafing.

So, which one is you?
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Old 09-18-13, 01:49 PM   #16
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So, which one is you?
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Old 09-18-13, 02:02 PM   #17
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Well played, Smallwheeler! ....well played sir.
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Old 09-18-13, 02:59 PM   #18
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They look lost,
are they wearing gps speedo?
Lol


Ps the us military gps should be better as the civil gps version was deliberately made inaccurate to a few tens of yards.

But then someone thought of using three reading and taking an average in the middle of the triangle.

Then the civil available gps system became precise enough for road navigation etc.
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Old 09-18-13, 03:49 PM   #19
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I could tell from the women's faces that was you behind them in a speedo.
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Old 09-18-13, 04:16 PM   #20
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good eye, bass. but, seriously, i don't blame them for not being able to handle my sexiness. few can.. few can..



(completely wireless speedo, btw. staying on topic!)
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Old 09-19-13, 03:48 AM   #21
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Have a look at the Garmin Forerunner GPS devices for runners and cyclists, some models come with a heart rate monitor.
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