Topic: Daytona Velona Gauges

[Ellz10]

I'm hoping Cal or someone else can provide some quick insight for me on this matter.

Bike is a '77 750K.

I bought 2 separate gauges, one speedo and one tach, instead of a combination because that's what I preferred. Both are Daytona Velona 60mm type 2.

My issue that I'm thinking I'm going to run into is that I'll need some of the sensors that were promoted under the description when I was purchasing it online.

Is this the case? For example, do I need an Active Speed Sensor or a 10Hz GPS Speed Sensor or a Universal Cable Drive Converter to make this speedo and tach work properly?

I've got an m.Unit, lithium Ion battery (antigravity) and all the accompanying parts that go with such a setup.

Thoughts?

[Ellz10]

The tach is driven off a signal from the coils. The speedo can be driven off a sensor (magnetic, hall type) or a cable conversion. I think the sensor approach is easier and more accurate. I’ve mounted the magnet on the front drive sprocket replacing one of the sprocket bolts with a bolt that already has the magnet embedded on the head. Then just position the pick up under the shift cover. Or install on the front wheel tying the wire to the forks (less attractive).

Are either of these 2 what you're referring to??


Or can you post a reference picture so I know what you're talking about exactly so I know what to order please.

[Ellz10]

I'm having an annoyingly rough time trying to understand this. I'm looking at all these options and the main one being the proximity speed sensor that goes on the wheel or sprocket (Front sprocket like you mentioned) but how exactly is it supposed to mount and how is it relaying the information, what exactly is it reading, the teeth going round and round?

So after watching a few YouTube videos on the proximity sensor, I realize that yes it's reading the revolutions of the sprocket to measure the speed.

My next question would be this - why wouldn't I just use the motogadget speedometer sensor? Would it be easier going with the m.unit setup or about the same in terms of accuracy and ease of setup?

[Ellz10]

The tach is driven off a signal from the coils. The speedo can be driven off a sensor (magnetic, hall type) or a cable conversion. I think the sensor approach is easier and more accurate. I’ve mounted the magnet on the front drive sprocket replacing one of the sprocket bolts with a bolt that already has the magnet embedded on the head. Then just position the pick up under the shift cover. Or install on the front wheel tying the wire to the forks (less attractive).

Are either of these 2 what you're referring to??


Or can you post a reference picture so I know what you're talking about exactly so I know what to order please.

The top one if you want to retain your original speedo drive on the front wheel. This simply replaces the stock speedo cable and this new cable plugs into your Daytona gauge.

So I did a 2019 GSX-R 600 front end conversion on this build, not sure how that plays into things?

Would going with the top one (proximity speed sensor) still be the most accurate and easiest way to go? And placing in under the cover of the front drive to read the sprocket?

I apologize for my lack of knowledge here, there isn't too many videos or material I've found on the web to help me and I'm ordering these gauges from overseas as they don't sell these 2 in the states and I'd rather get the correct parts the first time around to save money shipping anything back.

[Ellz10]

No, the top item is for reusing the original speedo drive, which you cannot. You need a speed sensor (like the approach I described for reading the revolutions from the front drive sprocket). Option two is your path forward.

You then need to design/determine how to affix the sensor opposite of the sprocket if you desire to use the sprocket bolt as the counter.

I took the shift cover off my 550, welded a thin piece of sheet metal parallel to the chain line. Drilled a small hole in that metal, passed the sensor through so that it would be suspended 4mm outboard of the sprocket. I then ran the wiring forward and up/out along the Stator wiring and finally up to the gauge. Sorry, I don’t have pictures, but if you sit in front of your bike, it should become clear.

If you can’t locate 6mm bolts with a magnetic head (I’ve seen them sold at places like Cognito, Revival Cycles, etc) then simply epoxy a small magnet to the head of whatever you’re using for a sprocket bolt. Just space the sensor away accordingly.

So this is the one that Daytona sells for their guages and is what I believe you're referring to. However they state that there's no magnets required, so I'm curious how that would work ‐ what would the sensor be fixating on to be able to count each revolution?

[Ellz10]

This was also on the list of appropriate speed sensors that work with these Daytona gauges - not sure if this would be easier and/or suitable?

Only downside that I read was that there would be interference when driving in a tunnel or under a long bridge, but we don't have anything like that up here in Michigan.

[Ellz10]

No, the top item is for reusing the original speedo drive, which you cannot. You need a speed sensor (like the approach I described for reading the revolutions from the front drive sprocket). Option two is your path forward.

You then need to design/determine how to affix the sensor opposite of the sprocket if you desire to use the sprocket bolt as the counter.

I took the shift cover off my 550, welded a thin piece of sheet metal parallel to the chain line. Drilled a small hole in that metal, passed the sensor through so that it would be suspended 4mm outboard of the sprocket. I then ran the wiring forward and up/out along the Stator wiring and finally up to the gauge. Sorry, I don’t have pictures, but if you sit in front of your bike, it should become clear.

If you can’t locate 6mm bolts with a magnetic head (I’ve seen them sold at places like Cognito, Revival Cycles, etc) then simply epoxy a small magnet to the head of whatever you’re using for a sprocket bolt. Just space the sensor away accordingly.

So this is the one that Daytona sells for their guages and is what I believe you're referring to. However they state that there's no magnets required, so I'm curious how that would work ‐ what would the sensor be fixating on to be able to count each revolution?

That sensor is a “proximity sensor”. In their manual they state place it opposite a bolt in the front rotor as an example. So the principle is the same as I described less the magnet. You can still use this one opposite the chain sprocket bolt under the shift cover if you desire.

Okay perfect! Awesome Cal, thank you very much!