Wildguzzi.com
General Category => General Discussion => Topic started by: Irishflyer on August 04, 2020, 05:04:20 PM
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Previous owner of my 96 Cal III had purchased some very nice Speedhut Gauges, but was having a hard time with the drive adapter to send the pulses. I found an adapter on Amazon, the DAYTONA Motorcycle Speedometer Conversion Adapter. It threads right onto the speedo output on the transmission, and has three wires. The instructions are in Japanese. I looked up symbols for colors. 12v is Red, Output to speedometer is Yellow, and Black is ground. $61 on Amazon.
(https://i.ibb.co/BnmKn6k/signal-2020-08-04-161529.jpg) (https://ibb.co/BnmKn6k)
anonymous image hosting (https://imgbb.com/)
https://www.amazon.com/gp/product/B01A7VLTFQ/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1
Hopefully this helps anyone looking for a cut and dried solution. It does have a pass through to drive a cable driven speedo as well, I am actually using it differently than what they intended, I turned it around and screwed it right to the output threads. I will find a cap that is 18mm to seal it.
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Looks pretty fancy, I used a small magnet spinning in the square hole and a reed switch for mine, no bearings required as it spins in the original drive.
(https://i.ibb.co/sqKgpqr/Speed-Sensor.jpg) (https://ibb.co/sqKgpqr)
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Do you know pulses per revolution? Or some way to match up accurately?
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Thanks for that. :thumb: I've saved KR's sketch in my "Roy's Guzzi stuff" file in case I had to make one, but I'd rather just bolt something on and be done with it in my waning years. :smiley:
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Do you know pulses per revolution? Or some way to match up accurately?
Speedhut has a calibrate mode, as long as you have pulses, it can calibrate basically. Drive to 25mph, hit save, and it extrapolates from there. I'm not sure of Daytona's pulses per mile.
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My VDO speedometer has you drive exactly one mile while in programming mode, speed doesn’t matter. It counts the clicks in a mile and does all the math from there. I looked on my state Highway Department website and found a map showing all the posted Measured Miles, went to the nearest one and drove from post to post.
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I had a spare sensor from MotoGadget lying around so incorporated it onto the rear brake mount where it reads off the disc bolts.
(https://lh3.googleusercontent.com/pw/ACtC-3eJ8l4x2qROkC8PY9VbRP209Z-pG-iXZlNCkTMymqsXjfpPclfgZltMtPKIWj2SKNJcfbMQp2IUCroqBdEmP2mYduui8BuaN6qXAoEE_envAWn59qyi3wiS3OxSALjHGCpMokV6F8gTKbmBTLR5fMM0=w1466-h977-no?authuser=0)
I chose the Speedhut over Marshall, I preferred the looks of the Marshall, but they were thicker and their pulse range more limited so I opted for Speedhut.
Speedhut is great, but I did find all the button press m'larky to calibrate it a bit of a PIA. Trying to sets the modes, get it to the correct speed then hitting the cal while trying to keep a constant speed via a GPS mounted on the tank was tricky and I had eventually to take my gloves off to do it. As I recall the problem was the speedo reverted out of cal mode after a given number of seconds, which was irritating.
All that said it didn't take long to do once I worked it out and it works.
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I noticed Amazon lists it as currently unavailable although I'm sure they'll get more.
If I remember, there was also a GM hall sensor that worked. I don't recall the application or cost though. Perhaps someone remembers.
I was thinking about posts like this providing helpful info. Some of this stuff ought to be added to the tips and tricks page.
John Henry
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The GM sensor is about $25 or so. The problem is that it does not have the correct size end to fit the trans.
Tom