Much to the chagrin of a few here, I previously installed a 17T front sprocket, because I thought the bike was geared too low.
Since the speedometer ouput is taken from the transmission shaft, obviously my speedo was off because of that change.
So I installed the V4 speedo healer.
the electrical plug to get to, it deep under the air filter box, so heres a few pictures of how I got to it, and plugged it in. deep under the air filter, is the connector, couple pics showing it being unplugged.
here showing pushing the new harness splice back into the original location, with long screwdriver.
and finally temporary location at the tool tray, with easy access, and instructions on how to reset.
(much like setting a watch, sel and set, to P blinks, then 0,0,0,0, and using the chart on the speedo healer site, 7.
this changes, more accurately modifies the signal, to read properly.
well, off to go out and ride, I'll post more later. Time for a test ride, enjoy the bike, and see how my speedo reads compared to how it used to read, as far as I can remember and feel from yesterday, before the modification.
Last edited by suzukijo; 03-02-2013 at 03:01 PM.
Interesting, has anybody actually clocked the CB using GPS or whatever?
Normally the speedo reads high, so that we all keep within the limits, so if you geared it up (17t front) then wouldn't this bring it only slightly slow (low)?
When I had standard exhaust I was convinced it was too low geared so purchased a 17 tooth. Since fitting the akrapovic I'm not so convinced so haven't as yet installed it.
Nice install but for me it would have to go somewhere else other than under the seat as with a PCV, toolkit and a small lock there ain't a lot of room left and don't forget my thread a while back about the seat lock jamming.........
Hi El - I've run my sat nav as standard and on mine, as you say, it over reads - at 32mph the GPS says 30 (so not much difference) , but at say 70mph on the GPS I can be doing around 75 on the speedo - bank on about 5-10% depending on your bike.
The bike picks up the road speed from the front sprock speed (or something similar), so a re-geared bike (either front of rear or both sprockets) will have varying results I reckon.
One thing you could do is change the gearing then use a sat nav gps to see what your margins of error are ..might be useful.
Great write up from S-Jo above...
Last edited by sovrec; 08-08-2014 at 11:08 AM. Reason: can't type
The SpeedoDRD from 12 o'clock labs has the same function as the Healtech Speedohealer, but it's smaller, cheaper and watertight.
I have the SpeedoDRD installed behind the left side cover, not taking up much space.
The Black N Blue Bike
So has anybody GPS speed checked a standard set up with a 17t front?
I would guess it would only be out by <5% low.
How much room is it when you install a 17 tooth and what is part # and where do you get them etc.
Cheers Sovrec, so I make that about a 6% average "over read".
What's the standard rear tooth count?