S4RT - Speedometer intermittently stops working

[Heath]

First.. no the needle is not slipping 

I have a 2007 S4RT with the gauges replaced by SOS Diagnostics. Not sure what bike the gauges came from (the face is black), but something with a different magnetic pick up because the speed was way off. It was reading 44% too low. So I run a 12oclocklabs SPEEDODRD speedometer corrector to fix it. I've been on this set up for a couple years now with no problems. It was way more accurate then any bike I have had.

Recently after a hard acceleration the speedometer will just go to zero. No movement while riding, the needle hasn't slipped, it just doesn't move. This has happened twice so far on two different days.  I can pull over, shut the bike off and turn it back on. The gauges will sweep and start working like nothing happened. Is there anything I should look at in particular? I have been riding more aggressive lately so it seems like I am accelerating faster than how I have ridden in the past. I didn't think I was too quick for the gauges though haha.

[Howie]

Either of four things, not necessarily in any order.

    Bad Speedo
    Bad speed sensor (count that one out if the odometer
    works)
    Bad speedometer corrector
    Wiring

I would start by eliminating the speedometer corrector.  Problem disappears, you found the culprit.

[ducpainter]

I agree with howie, except i'd verify good connections before disconnecting.

[Speeddog]

DSS Monsters pick up off of the 6 brake rotor bolts.
Excluding M1200, 1100, 796 ABS models, SSS Monsters pick up off of 4 pegs attached to the rear disc itself.

Swapping speedos across configurations will read 50% high and 33% low, aided and abetted by the built-in ~10% high speedo reading if you're comparing against GPS or some other accurate method.

[Heath]

I'll check the connectors to see if anything looks out of the ordinary.  I know the bolts that I have are titanium but looking at it today looks like there are magnet pick ups near by? I don't know what I am looking for though.

[S21FOLGORE]

Speedo pick ups (4 pegs attached to rear disc)

[Howie]

If you did any swing arm work recently there is an air gap spec for the sensor, .6 - 2.2mm.

[Heath]

S21FOLGORE - that is exactly what they look like. Thanks for that.

Howie - nothing, just been riding and checking tire pressure. She needs a good wash and hasn't gotten that for a while either.

[Heath]

I am going to give a good look at it tomorrow. Tonight I was riding along just cruising 70mph, happened to look down and it wasn't working.  A few minutes later I glance down again and its working again.  Silly gremlins