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Topic: Speedometer< Next Oldest | Next Newest >
rvt2002 Offline





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Posted: Dec. 26 2008,00:16 QUOTE

Merry Xmas to everyone :D

What does this circuit board do? Can i just disable it?





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Niño
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wullie3XV9 Offline
Wullie3XV9




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Posted: Dec. 26 2008,03:28 QUOTE

NO !! It's the speed restrictor circuit board.
The simplist way to disable the speed restrictor is to keep it installed & connected to the wiring loom, as per your photos. What you HAVE to do is TRIM the semi-circular metal tab DOWN, but DON'T remove it all, leave the part of the tab that is opposite the sensor on the circuit board AT REST, (again, as per photo above). This fools the speed restrictor circuitry into thinking that you are travelling slower than you actually are, because the sensor tab is NOT OPPOSITE the sensor again until much LATER during speedo operation.
When I bought my 3XV, it wouldn't rev. past 180 kph on the speedo. On dismantling the speedo to find out why, the small circuit board, (in your photos), was NOT attached to the speedo assembly at all. Found the circuit board still connected to the loom, but taped up to the loom OUTSIDE the clocks !! On reattaching the circuit board to the speedo mechanism AND trimming the semi-circular tab, my bike rev'd past 180 kph.  :D   Warwick B posted up the procedure on here somewhere a couple of years ago, but I can't remember when. Hopefully, someone else can point you in the right direction, as there are photos showing you exactly what to do.
I hope I made sense though, 'cause I've had a "couple" of double vodka & cokes tonight !!  :p

                  Anyhoo, Merry Christmas Mr RVT, Hope you had a good day.  :D


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rvt2002 Offline





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Posted: Dec. 26 2008,10:16 QUOTE

Sorry if the pics is a lil bit dark(its late here 2 am :) ) So is that circuit board purpose is not to let you pass 180 kph? If you disconnect it would it do anything to make the bike run bad ? The reason i was asking is because i just replace the kph into mph gauge(FZR600 speedometer gauge) so if it wont affect or make the bike run bad when disconnected that would be cool and i dont have to figure out where to put if that circuit board need to be connected .  





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Niño
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rvt2002 Offline





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Posted: Dec. 26 2008,10:19 QUOTE

I also transfered the tzr tacho, wires and temp gauge to the fzr casing as the one i have is beat up(cracked and repaired)

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Niño
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Warwickb Offline





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Posted: Dec. 26 2008,13:05 QUOTE

If using an FZR speedo unit and a stock Cdi, your easiest option is probably to use a Posh Firm Moto derestrictor box for your model as these just plug into the wiring that would have gone to the speedo unit from the instrument wiring loom (the black block connector and the single greem wire shown above) rather than needing to be plugged in 'in-line' into both that wiring and the wiring from the speed restrictor circuit board itself (like the m-max unit).

Alternatively, if you are good with auto electrics, perhaps you could play around with the deristrictor circuit board and work out the resistance it sends to the Cdi in the unrestricted position and make up your own little de-restrictor gizmo using a suitable resistor/capacitor thingie?

Can't quite remember how it works on the 3XV as it's a few years since I used this kind of set-up, but you'll either find that revs are a bit capped in all gears without the restrictor circuit board fitted (as happens on the 3MA), or it may just stop it revving out in top?  A quick road test will make it apparent Id think.

The more lo-tec option might be to wire in the restrictor unit with the drum turned and held in the unrestricted position (ie with the metal tab not between the little sensor plates) and tape it all up and stash it behind the clocks? Never tried that, but, logically, it should work OK I'd think ???.


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rvt2002 Offline





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Posted: Dec. 26 2008,19:59 QUOTE

Thanks Warwick for the reply and probably need to wait till i  can test ride as i havent started putting the engine together. Damn it  :angry:  That circuit board is PITA. Why they have to put that stuff in there  :p . Man this thing is so perfect already  :D

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Niño
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kqtzr Offline





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Posted: Dec. 26 2008,20:37 QUOTE

Hello & Merry Christmas to all.
I have a Posh unit for a 3XV I don't need if interested???
Kevin.
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rvt2002 Offline





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Posted: Dec. 26 2008,20:42 QUOTE

Excuse me for my ignorance but what is posh unit? :D

:Edit:
Opss nevermind i reread warwick post. sorry was in a hurry and reading to fast  :D

Let me know how much for the Posh?


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Niño
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jamietzr250r Offline





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Posted: Dec. 27 2008,00:41 QUOTE

there is an even simpler way with out even touching the wiring at all.
fit a speedo converter in line on the speedo cable, this has a reduction gearing in it with will now make the kph read as mph. and as (as far as i know) no 250 can do 180mph the restrictor does not ever get used!
i have one fitted and i can rev as hard as i want in any gear (except top as i'm a fat git! :p  :) )


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rvt2002 Offline





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Posted: Dec. 27 2008,01:03 QUOTE

Yeah i know the one your talking about but since i bought this fzr gauge all i need is to make it work, My mistake is i didnt research about the tzr, i just assume that since its mechanical i can just replace the guage and be done. I didnt know that stupid restrictor is attached to the speedometer.

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Niño
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kqtzr Offline





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Posted: Dec. 27 2008,02:42 QUOTE

How's $60. shipping included???
Kevin.
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rvt2002 Offline





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Posted: Dec. 27 2008,03:00 QUOTE

Can you send me pics of the item. nde854@hotmail.com

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Niño
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kqtzr Offline





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Posted: Dec. 28 2008,19:17 QUOTE

I can get picture up later today.
Kevin.
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rvt2002 Offline





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Posted: Dec. 29 2008,20:42 QUOTE

Ok ill wait. :D

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Niño
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kqtzr Offline





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Posted: Dec. 29 2008,21:11 QUOTE

Sorry, didn't get to it yesterday.

Kevin.
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jools Offline





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Posted: Dec. 29 2008,22:25 QUOTE

I also have a full set of 3XV clocks in excellent condition if you are interested. They have the pick up mod already done !

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rvt2002 Offline





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Posted: Dec. 29 2008,23:07 QUOTE

Jools thanks for the offer but ill go for the posh unit as the purpose of my mod is to used a mph clock not kph unless your clock is mph.  :)

Kgtzr ill pm you. :D


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Yuri Offline





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Posted: Jan. 01 2009,09:23 QUOTE

so if you have a sugo cdi then you do not need any thing ales ?
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Warwickb Offline





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Posted: Jan. 01 2009,14:10 QUOTE

Yes, Yuri. If using a Sugo box there is no need to use the derestrictor boxes as the Sugo Cdi is not configured to receive the restriction signal from the Speedo unit. You can remove the speedo completely in fact. This is easiest if using SP clocks:



Happy New Year all :D.


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Yuri Offline





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Posted: Jan. 01 2009,17:41 QUOTE

thanks
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