Help with throttle body linkage

[pacote]

I need a real scale template of the RXV OEM throttle linkage to made a new one.


The point is that I bought a RXV550 used and the previous owner changed the map and the throttle body linkage to the asynchronous model.


Now I want to sync the throttle bodies but I need the OEM linkage and I dont have that element.


Now or Aprilia only sells the whole throttle body or I am to silly to find a part number.


Can anyone take a real scale drawing of the oem linkage?


If anyone has one and want to sell it please contact me.


Thanks in advance

[tehdutchie]

I was told you dont need to sync the async throttle bodies...

[SXVINWA]

I was told you dont need to sync the async throttle bodies...

There is a factory procedure for the asym setup. I would think you would need to do the procedure to keep the second TB 10 deg behind.

[pacote]

I was told you dont need to sync the async throttle bodies...

There is a factory procedure for the asym setup. I would think you would need to do the procedure to keep the second TB 10 deg behind.

Hi techduty,
As SXVINMA said, to perform the factory procedure about the asymetric setup you has to replace the asymetric rod with the standar rod.


Thanks to amauri here you have the related procedure : http://www.apriliaforum.com/forums/s...=1#post2630979


if you read point 3 then you can see that you need to repalce the asymetric connection rod with the standar rod.


... So I still need the standar connection rod.

If anyone has one standard connection rod dismounted it's easy to draw a copy and scan it .

Please help.

[amauri]

The asymmetric rod is just a std rod with the front hole elongated closer to the rear hole.
Just make a new rod with the holes spaced at 78.8mm center to center.

BTW, contrary to what the procedure states, you don't need the std rod just to synch the TB.

[pacote]

The asymmetric rod is just a std rod with the front hole elongated closer to the rear hole.
Just make a new rod with the holes spaced at 78.8mm center to center.

BTW, contrary to what the procedure states, you don't need the std rod just to synch the TB.

Ok, thank you very much for the info Amauri.

From here is only a theorical discussion: ( Please understand that I have no doubt about your answer, I only want to learn)

In that case I don't understand how it works.
I assumed that they should have different curved sections to compensate the delay between the butterflies after the hole elongation is reached...

If they are the same... one cylinder is always undercharged in relation with the other one and not only at the begining of the throttle opening.
That could be good for better (soft) throttle response but is bad for the reliability / pure performance...


Ok, now I'm sure that I need built that rod and load an arrow map or alice map to the ECU...

Thanks for the info again.

[amauri]

I assumed that they should have different curved sections to compensate the delay between the butterflies after the hole elongation is reached...

Yes that is correct.

Now what is not quite right is that you have an Asymmetric linkage on an RXV550.
To my knowledge, the only Asymmetric maps available are for the VDB550 and the Merriman 450, not the RXV550.
What map number were you using on your RXV550 with that linkage?

[pacote]

Hi Amauri, tomorrow I will check what map is in my ECU.
The linkage has the hole elengation but I dont know if it is the oem modified or the asymetric one.

I will tell you more info tomorrow.

Thanks

I assumed that they should have different curved sections to compensate the delay between the butterflies after the hole elongation is reached...

Yes that is correct.

Now what is not quite right is that you have an Asymmetric linkage on an RXV550.
To my knowledge, the only Asymmetric maps available are for the VDB550 and the Merriman 450, not the RXV550.
What map number were you using on your RXV550 with that linkage?

[pacote]

Yes that is correct.

Now what is not quite right is that you have an Asymmetric linkage on an RXV550.
To my knowledge, the only Asymmetric maps available are for the VDB550 and the Merriman 450, not the RXV550.
What map number were you using on your RXV550 with that linkage?

Hi Amauri, my software can't recognize a map number...



The dealer of the previous owner was jjchorro and they have a racing team.
They race the spanish "Baja Aragon" with the 550 so this map could be any kind of special / customized / racing map.


The problem is that I live so far from him and in fact I would like to do the bike myself.


I'm not sure.
If you want I can send you the .bin file downloaded from the ECU.


Thanks for your help.

[pacote]

At the end I bought used TBs and I replaced the Async linkage in my TBs.
Now I am setting up the bike, loading Alice Racing Map, performing TB syncronization... everything is in process...
But I don't know how I can read now the map previously loaded but I have read it and it is a 25060 MAP...


Could this map work all right on a RXV 550 with Async Throttle?


Cheers

[protogeo]

To my knowledge, the only Asymmetric maps available are for the VDB550 and the Merriman 450, not the RXV550.

what is the advantage of having asymmetric TBs?

sorry for the noob question :p

[swerver]

But I don't know how I can read now the map previously loaded but I have read it and it is a 25060 MAP...
Could this map work all right on a RXV 550 with Async Throttle?

I can't even see that map (25060) in the map list - even on the latest beta version of XVTuner.

[KWest]

25060 more then likely a custom map, or an Aprilia map that was never released.

pacote you have a PM.

[pacote]

what is the advantage of having asymmetric TBs?

sorry for the noob question :p

Asymetrics TBs is used to smooth the power delivery at low throttle opening.
In fact from 0 to 10 % of the TPS only works one cylinder.


After that point the linkage curve corrects the situation doing that both cylinders work paired.
This appears at first time with the RXV-450 Merriman.


I am an old school guy. So I prefer standar working mode (paired) from 0 to 100 %.
I think thats better for the reliability and pure performance.

[protogeo]

Thanks pacote for your answer

i hane another one :p

what parts are needed to make the oem tbs asymmetric?