Having trouble locating an 80mm GPS speedo?? Thought these were out there?

[Mayor_of_BBQ]

DOne a lot of searches, read a lot of threads!  I am looking for an 80mm GPS speedo to fit on my v65. All I need is speed, Odo and a resetable trip odo...

I thought Speedhut was the way to go, but they don't seem to produce 80mm gauges (I was certain folks had used them??)  I loked speedhut because I wanted a custom face (white face, Guzzi logo)

Also looked at Auto Meter, they don't have 80mm either.


I see some stuff on ebay, but the quality can be questionable over there?

Importantly, I want it GPS, illuminated face, and the trip/odo window.

Do not need any indicator lights etc on the face...


Anyone have a suggestion for me?


(it has to be 80mm because I have a beautiful SS 80mm cup from Gregor Halenda's LM IV project I want to use on this bike)

[Mayor_of_BBQ]

lastly, I see some automotive applications exist... but I need weatherproof, as this is a naked bike!

[Kiwi_Roy]

Yes I had the same problem for my Lario.
Did you try e-mailing Speedhut? Perhaps they might make one for you, I would buy a pulse input one but they don't advertise those either,

GPS seems a bit too modern for an old bike, it would be easy to adapt a pulse input.

[Mayor_of_BBQ]

Thanks Roy,

I did call speedhut, they said no custom sizes, only custom touches on their stock sizes...

I want a GPS in part because im trying to de-clutter the lines around my front end... it is a cafe racer after all :-).  My speedo pickup to the front wheel is ugly and overlong and flappy in the breeze!

[rbm]

Motogadget Chronoclassic is an 80mm unit but not GPS.  It uses a magnetic pickup to sense wheel speed.

Be careful as I've spoken with someone who provisioned their motorcycle with a GPS speedo and found it to be suboptimal.  It takes a long time to acquire enough satellites to get a reading; meanwhile it doesn't readout any speed at all.  It also looses acquisition easily especially if you travel in areas where visibility of the sky is poor, like tunnels, under thick tree cover, etc.  A sensor based speedo will be less frustrating in the long run.

[Kiwi_Roy]

I/m not sure the Motogadget ubit would fit in the rubber doohickey, it's a real beach to get in and out.
Besides it has integral lamps which you probably don't want.

If we can get rid of the cable I have a simple solution to a speed sensor

I spent a couple of days refurbishing the speedo on my Lario and it didn't work LOL.

I wonder if the VDO programmable unit would fit, its 84mm (3,32") across the bezel
About the same cost as a Speedhut.

https://www.summitracing.com/int/parts/vdo-437151/requiredparts

[charlie b]

http://kosonorthamerica.com/shop/motorcycle-mx/tnt-01/

I know this has more than you want.  It can be fitted with a GPS sensor instead of the mag pickup.

[Kiwi_Roy]

Charlie,
           I think that unit is too big also, the rubber dash is really tight.
If the only option is to scrap the dash and start again might as well get a pair of Speedhuts,

[Scud]

I used 3 3/8 gauges from Speedhut - including GPS Speedo.

80mm = 3.15 inches
3 3/8 inches = 3.375 inches

I used 80mm O-rings around the gauges when I mounted them in the stock dash on my LeMans. No modification to dash required (but I did modify the plastic bucket for mounting and to seal unused holes.

As for your concern with wires and clutter - you will still need to find a place to mount the GPS receiver, which needs to be connected to the gauge by a wire.

[rodekyll]

Perhaps a big grommet?

In the HID headlight conversion circles there is something called a 'centric ring' that allows a smaller diameter HID projector to be fitted in a larger bucket.  Perhaps there is one of those with a suitable ID/OD to mount your tach.  You might even get it to use a grommet to slip the gauge into.

But I agree that gps is too spotty for reasonable speedo use.  It can take us up to 5 minutes to acquire enough satellites to light up our marine nav charts.  We can have a full second to three seconds or more lag in reporting changes in speed and direction, and there are weather conditions and travel conditions that gps doesn't penetrate, like bridges, tunnels, and box canyons.  Most consumer marine gps systems report "no fix" several times a day.  Just food for thought.

[Kiwi_Roy]

I measured the Lario speedo tonight its ~ 3-3/8" to the outside of the bezel.

I believe the 3-1/8" VDO will fit, it's 3.3" to the outside of bezel

They seem to have 2 in 3-1/8"
437-050
437-151
One of them may be GPS, the web site is confused, it talks Hall Effect but shows a GPS module.
I doubt the reset button is waterproof.

Update:
The data sheets for both models describes a pulse input type so who knows.

[Zoom Zoom]

In the FYI department, those I know that have used the Speedhut gauges say they fit in the opening without the rubber grommet. I would probably place a large O ring on the body of the gauge before inserting it into the opening, just for giggles. Screws off the back allowed the use of the stock back cover. I recall seeing that posted somewhere here, but I don't recall exactly what was done there.

John Henry

edit: I don't know if this helps related to the Lario dash. I know several folks have used these on other Guzzi's.

[charlie b]

FWIW, the magnetic sensors are easily 'concealed' as opposed to cables.

I use my nav GPS unit a lot, partly because of it's accurate speedo.  Yes, even when running there is a little bit of lag in the readout.  Usually about 30sec to get a lock after starting back up, but, that much time is spent getting out of the parking lot.  Canyons (deep ones), city centers, tunnels are all places where you will looose the signal.  The danger to it is the speed just won't change so you can be led to believe you are still going 65 when you have sped up to 90.  I would hope that a GPS speedo would have a red indicator light to tell you when it has lost signal.

[Scud]

Kiwi Roy and I have both posted some details of our installations.  Here's a pic that may help the current discussion:



There are 80mm O-rings between:
1: Gauge bezel and dash panel
2: Dash panel and plastic bucket
I put them there to reduce vibration and take up some space that was previously taken by the stock rubber grommet that went around the gauge body and inside the hole in the dash panel.

Re reset button - I got the remote button ($10 option). You can barely see it in this picture - sticking out of the stock gauge bucket, close to where the OEM reset knob was. I angled it down and use some washers to prevent water getting in.

You can also see the GPS receiver on the dash.

[charlie b]

Since we are kinda on speedo topic, where can I get a speedo sensor that fits where the speedo cable normally goes.  I seem to remember someone using a Chevy unit?

And, yes, it's for the T5, Tonti big block 5speed.

I'm about to get a new speedo and would rather not have to deal with magents, and I don't want GPS.

[jacksonracingcomau]

Since we are kinda on speedo topic, where can I get a speedo sensor that fits where the speedo cable normally goes.  I seem to remember someone using a Chevy unit?

And, yes, it's for the T5, Tonti big block 5speed.

I'm about to get a new speedo and would rather not have to deal with magents, and I don't want GPS.

Acewell make one, goes straight into g/box cable drive, pick up inside first couple of inches, no cable to break.
I've been using one 2-3 years only issue was very early on, erratic reading, sorted with resistor plugs, was good stab in dark
But getting Acewell tach to not stray every now and then has proven beyond me, but not high on my priority list.

Digital speedo is, if anything, too accurate, reads to .1 Km/hr (or .1mph) so if trying for 60, it flicks 59.8-- 60.2 but I've got used to it now
Hooking Acewell cable pick up to analogue speedo should be easy enough,

[charlie b]

Thanks.