Bicycle computer install successful

[NC Steve]

Beyond a few problems with adhesives, I managed to get the new Sigma 1606L computer  installed, calibrated and tested last night & today. Now I've got accuracy with speed, distance, twin tripmeters, a clock, 2 stopwatch timers, all sorts of useful info.
I wanted to do a neat installation and debated several ideas, finally deciding to replace one of the dummy "plugs" in my R65's dash with the gauge, angled upward like the stock speedo & tach.

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I used a slightly tweaked 3/4" 1-hole conduit clamp as a mounting base for the computer head, basically matching the curve and diameter of the stock handlebars.

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Ta-Da!

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I also notched the blank plug to allow the bracket's curve thru and to route the wiring to the front wheel.

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Tie-wrapped wires along existing brake hose, leaving slack for fork compression & turning.

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Stuff on the right works great, junk on left, not so good. I went thru 3 epoxies/adhesives before finding one that liked joining magnets to brake discs.

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Back from a trial run, everything working fine, Also a chance to try out a new tail bag.  [smiley=thumbsup.gif]

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Checked against mile markers & 2 car speedos, and everything appears to be very accurate.
Not bad for a few hours and about 30 bucks!

[MrRiden]

Images?

[Justin B.]

Timely post, the odometers on both my wife's '84 R65 and my '81 R100 quit working today!  

[NC Steve]

Mr. Riden, Images?
There are 13 photos: are they not visible? :-?

[Justin B.]

I can see 'em...

[Ed Miller]

Looks like a neat installation.  I wouldn't have guessed the silicone for sticking the magnet.  Does that thing read over 99 mph?

[NC Steve]

Ed, yes, it can be set up to read up to 199.9 mph (almost wide open in 5th ), as well as average speeds, trip times, calculated time remaining, all kinds of neat stuff. This particular model's also back-lit, which most aren't, although I don't do a whole lot of night riding.

I'd seen a couple of installations here and on other boards, and it seemed like a pretty inexpensive and noninvasive alternative to shipping the stock speedo to Palo Alto in a large crate of $$$, although I'll probably do that down the road, someday, maybe...

[SCJJR65]

Cool "Show 'n Tell", Steve!   [smiley=thumbsup.gif]

As "Borat" would say, "Very Nice!"  

[Semper Gumby]

Jeez.  34946!  Only a baby!

Love the Blue.  My odo works just fine and the speedo is accurate to 0.5 mph per my GPS.  Perhaps one of the benifits of going  through Palo Alto.

I gave one of those to my brother for Christmas for his Bicycle!  Might have to get one for the BSA as the trip odo will not reset. (Hurrumph..everything else works!)

[VaSteve]

What calculation did you use for the size of the wheel?

[NC Steve]

Steve, the instructions (yeah, I actually read 'em) give 3 options for calculating wheel size;
1) Using their table of wheel/tire combinations and the correlating factor (bicycles only, so useless.)
2) Measuring the actual outer circumference, or
3) Measuring diameter x 3.14. Then, in #2 or 3, you need to convert inches to millimeters, so multiply by 25.4.

I had a spare wheel & tire, so I measured the circumference of that and compared to the diameter x pi calculation of my mounted wheel, and came up with 2000 mm for both, which I entered into the computer. Then, by designating kmh or mph, the computer does the rest.
I went out again today and put on about 80 more miles out in the country, and so far, so good. [smiley=thumbsup.gif]

[Melena]

I'm glad to see a successful installation.  I started to do this last year but what I did didn't work.  I'm just having trouble finding a place to put the sensor on the forks.  

I have the cordless one on my bicycle and it seems to work great.  

How did you attach the sensor to the forks?  

[NC Steve]

Melena, Sigma gives you several heavy-duty "rubber bands", for lack of a better term, about like hair bands, that you can loop together & around the lower fork leg. You can kinda see these in the 1 pic of the magnet & sensor. I used 2 in a figure 8-type configuration and secured the sensor at its' curved mounting edges. They also include several small tie wraps, for the same purpose as well as securing the computer itself, and these could be used if preferred.

Now that I've gotten the unit tested and calibrated, I think I'll additionally secure the sensor with another dab of the silicone adhesive. There's only a 5mm maximum distance between it and the magnet, so I don't want it slipping or jumping around any.  

[VaSteve]

What was the glue that worked?  I just picked one of these computers up and wanted to install it tonight.  I can't see the images.

[Jon_P]

i can see half of the pixs? i was thinking about doing that on the cafe so i could keep it real clean looking. thought about a gps unit and join rob in the geo hunting thing, guess it will come down to how much $$ i have and when i am going to do something about it.