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How does the more modern Harley speedo work

1583 Views 19 Replies 7 Participants Last post by  Racepres
My Speedo has stopped working on my 85 FXRS, the drive down at the wheel and cable is ok. Is it possible to use the newer HD speedos on the FXR how do they work?
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Up until they went with electronic . I don't know what year. I think the ratio's were changed in the drive unit for different tires.
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Up until they went with electronic . I don't know what year. I think the ratio's were changed in the drive unit for different tires.
No... Nothing to do with Tires... the runout is so Very close anyway...maybe excepting the 21!!
The Ratio seems to me to have changed to get to some Standard... probably cast in Rice!!! It is 2240:60 kinda 3.7 to 1
H-D still had 2 ratios prior to that,,, 2:1 and 1:1
The New, Non Mechanical Speedo????? Must be Magic...IDK
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No... Nothing to do with Tires... the runout is so Very close anyway...maybe excepting the 21!!
The Ratio seems to me to have changed to get to some Standard... probably cast in Rice!!! It is 2240:60 kinda 3.7 to 1
H-D still had 2 ratios prior to that,,, 2:1 and 1:1
The New, Non Mechanical Speedo????? Must be Magic...IDK
Non mechanical on an FXR works great.

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Its just a question of what speed sensor you run. In my case the Delkron trans case had a hole for an oem style speed sensor.

Many of the aftermarket gauges will work with any of the three main styles of speed sensor, it's just a question of how you wire it up. And in the case of these, the gauge supplies power to the hall effect style sensor that Harley uses. The gauge has to be calibrated after its installed, I just used the oem speedo to pace it.

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Non mechanical on an FXR works great.

View attachment 275879

Its just a question of what speed sensor you run. In my case the Delkron trans case had a hole for an oem style speed sensor.

Many of the aftermarket gauges will work with any of the three main styles of speed sensor, it's just a question of how you wire it up. And in the case of these, the gauge supplies power to the hall effect style sensor that Harley uses. The gauge has to be calibrated after its installed, I just used the oem speedo to pace it.

View attachment 275880
What gauges are those you have? I just have the original 85 gearbox, so no hole for speed sensor that i know of.
But im guessing its no problem to have sensor on my front wheel and a pick up on the fork like on a KTM dirtbike.
There are several sensors that can be used with the dakota digital gauges,,, 1 reads the oem speedo drive and cable,, another is mounted on the swingarm, and counts the revolutions of the 5 pully bolts..
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There are several sensors that can be used with the dakota digital gauges,,, 1 reads the oem speedo drive and cable,, another is mounted on the swingarm, and counts the revolutions of the 5 pully bolts..
Was just looking at those dakota digital gauges, they are a great product but man expensive. I see they have the tacho also so i would need a new housing for single speedo.
Non mechanical on an FXR works great.

View attachment 275879

Its just a question of what speed sensor you run. In my case the Delkron trans case had a hole for an oem style speed sensor.

Many of the aftermarket gauges will work with any of the three main styles of speed sensor, it's just a question of how you wire it up. And in the case of these, the gauge supplies power to the hall effect style sensor that Harley uses. The gauge has to be calibrated after its installed, I just used the oem speedo to pace it.

View attachment 275880
Are those Dakota gauges?
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I use that little sensor with magnet on all bikes with aftermarket gauges of choice.
Not much to see of it when done with care.
Just don ́t use the mounts that are attached to the gauge kit, which can be bolted to the fork or fender mount, they are bulky and look awful.
Simply glue on.
Thin wire attached to the brake line.
Still less obvious than any mechanical tach drive.
On that wheel it was installed that way 22 years ago, magnet had to be renewed (or glued back) only one time during all these years, which is about 15+ years ago.
Brake disc bolts could be used also, but I prefer it that way, since the sensor can be hidden better underneath the fender mount.
Right now doing the same thing on the 88 FXR with a Koso tach.
I like electronic gauges but not with digits, I need them old style with analog face and a needle.
Matter of taste of course, but - Koso and alike also cost a fraction of Dakota (..edit..: ..depends on what type Dakota is used..)
So in my case, I get away way cheeper with stuff I like better to look at (it usually always is the other way round).
Their rpm speedo also is a good match with the early style (Shovel design) FXR fuel gauge that I'm using (connects to the coil).
Don´t know if they have that same tach with miles face, but I'm sure there are other brands priced similar.


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Thats a good setup, Do you know if that Koso speedo fits in the original FXR speedo mount? Im trying to keep it looking originalish.
I picked a small speedo, not much bigger than the fuel gauge.

But having seen bigger ones on their site, I don`t remember the details of them.

You might have to compare measurements from them with your mount.
That`s the tach I will use, whereas the speedo that I have in the picture up is smaller, which is how I wanted it.
Just perfect face with my early style oem gauges, same sleek and simple (and most important, analog face).
housing measurements are 85 x 68.5 x 44.1 mm (sorry for the metric...) (convert measurements here
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That`s the tach I will use, whereas the speedo that I have in the picture up is smaller, which is how I wanted it.
Just perfect face with my early style oem gauges, same sleek and simple (and most important, analog face).
housing measurements are 85 x 68.5 x 44.1 mm (sorry for the metric...) (convert measurements here
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My Tacho is fine, was just hoping to get a speedo without all the bells and whistles to match the original tacho like yourself.
Im an Australian living in Norway so im more use to metric .


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I see.... I do not remember oem measurements, but maybe you check out the 85mm version with chrome ring...
This one is 30mm bigger than mine, 85 mm no bells and whistles
Maybe a better fit to the oem mounts.
240 mph is somewhat over the top, but you could still add bigger engine and brakes !
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There's a 140mph version too 140mph Koso
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Signal option, if you do not like the magnet on wheel or brake rotor :
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Harley Davidson Mechanical to Digital Cable Drive Adapter 3 Pin Connector (Wide Plug)
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....so you would need a red pointer....to match the tach....
Non mechanical on an FXR works great.

View attachment 275879

Its just a question of what speed sensor you run. In my case the Delkron trans case had a hole for an oem style speed sensor.

Many of the aftermarket gauges will work with any of the three main styles of speed sensor, it's just a question of how you wire it up. And in the case of these, the gauge supplies power to the hall effect style sensor that Harley uses. The gauge has to be calibrated after its installed, I just used the oem speedo to pace it.

View attachment 275880
Do these gauges mount straight up to the original FXR speedo/tacho bracket? Is it possible to get a picture from the side and back of the gauges.
Thanks,
Bob
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Do these gauges mount straight up to the original FXR speedo/tacho bracket? Is it possible to get a picture from the side and back of the gauges.
Thanks,
Bob




Betzel is oem, no mods. The cans are Autometer.

I couldn't get the oem cans to work well, and even a set of the new larger cans didn't fit them well. The Autometer cans fit like a glove.
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I have a 2003 FLSTCI with 27,000 and speed/tac with far less less mileage. How do I update/reset it to reflect my bikes true mileage?
^^^ Drill Motor comes to mind!!! BTDT
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