GoldenMotor.com Forum

General Category => Magic Pie & Smart Pie Discussions => Topic started by: Shane on November 11, 2017, 06:12:02 PM

Title: cycle analyst speedometer + Magic Pie III
Post by: Shane on November 11, 2017, 06:12:02 PM

Hi!
Has anyone succeeded in mounting the speedo wire and magnet for the cycle analyst v3. I have a CA3 and Magic Pie 3 back wheel. I am having trouble working out how I can have 6 mm highest distance between the magnet and speed sensor (to be mounted on the rear frame of my recumbent. I have a mag wheel without the conventional spokes.  :-\

Help appreciated

Shane

Title: Re: cycle analyst speedometer + Magic Pie III
Post by: Bikemad on November 14, 2017, 01:03:49 AM

Hi Shane,

Can you post some close up pictures of the frame and disc mounting area so we can see what space is available for mounting the sensor.

If you have a brake disc attached, it should be possible to glue a suitable magnet directly to one of the spokes on the brake disc and then fabricate a bracket to mount the sensor and then clamp the bracket onto the chainstay or under a brake caliper mounting bolt etc.

Alan
 

Title: Re: cycle analyst speedometer + Magic Pie III
Post by: Shane on November 14, 2017, 09:29:05 AM

Hi Alan,
I had also thought about glueing the magnet but not sure what glue I should use. Suggestions? I do not currently have a brake disc and I will create a photo later on today.

A bracket will almost certainly have to be constructed.

Shane

Title: Re: cycle analyst speedometer + Magic Pie III
Post by: Shane on November 14, 2017, 12:26:03 PM

Quote from: Bikemad on November 14, 2017, 01:03:49 AM

Hi Shane,

Can you post some close up pictures of the frame and disc mounting area so we can see what space is available for mounting the sensor.

If you have a brake disc attached, it should be possible to glue a suitable magnet directly to one of the spokes on the brake disc and then fabricate a bracket to mount the sensor and then clamp the bracket onto the chainstay or under a brake caliper mounting bolt etc.

Alan

Thanks Alan,
I had not thought about placing the magnet + sensor on the left side of the wheel. Here are the approximate measurements:

right hand side distance between frame and wheel rim:
about 4 cm
(https://i.imgur.com/HAAcoGM.jpg)

left hand side distance between frame and middle if wheel:
about 3.5com
(https://i.imgur.com/NGbbs7K.jpg)

left hand side distance between frame and center of wheel:
about 1½cm
(https://i.imgur.com/XWYxZAT.jpg)

I suppose I would have to make some adjustment to the configuration of the cycle analyst depending on where I placed the magnet + sensor?

best regards
Shane

Title: Re: cycle analyst speedometer + Magic Pie III
Post by: Shane on November 23, 2017, 03:45:19 PM

Alan,
I decided to hook up the sensor to this: https://www.aliexpress.com/item/2017-Bike-Bicycle-Cycling-Handlebar-Mount-Water-Bottle-Cage-Holder-Rack-Clamp-Newest/32797650901.html?spm=a2g0s.9042311.0.0.P22EIu

and the magnet to this 10mm spacer: https://www.aliexpress.com/item/100pcs-lot-M3-10-M3-X-10-Female-to-Female-double-pass-thread-Black-Nylon-Plastic/32766992093.html?spm=a2g0s.9042311.0.0.V6p7j0

and one of these M3 nuts, bolts and washers: https://www.aliexpress.com/item/300pcs-M3-3mm-Black-Alloy-Steel-High-Tensile-Allen-Bolts-Hex-Button-Flat-Socket-Head-Cap/32800762300.html?spm=a2g0s.9042311.0.0.XdGJ1n

inside one of the gaps of the 20" back wheel.

I'll let you know how I get along when the parts arrive :)

Hope the parts fit well.

Title: Re: cycle analyst speedometer + Magic Pie III
Post by: Shane on January 01, 2018, 09:49:25 PM

The parts above fit well. I just need to wait until I get may battery and chain stay in order  ;D