jrrgd
Parking Attendant
Posts: 6
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posted January 26, 2005 07:27 PM
Timing Retard Device
Greetings, and thanks for your attention. My mechanic called me tonight and asked me to help him with a new timing retarder device that he and a partner will be marketing. My part in the deal is to provide my ZX-10R so that it can be used as an example - to be photographed for their instruction manual. My payment is a free device, (installed), and a free oil change. I trust this guy, and I always like free stuff....
I checked-out several threads on this site and others regarding said topic, (and visited TRE product provider Ivan so-and-so's web site)...And as a degreed engineer, I'm ashamed to say that I still do not undertsand how this device will help me/my bike. Apparently the throttle on/off will be less harsh...OK. That's somewhat of a benefit...But I'm sorta getting used to the 10's tense throttle. I'm pretty sure that my mechanic said that overall, I can expect more hp throughout the rpm range...That's definitely something I'd like to have. I'm not sure how to reconcile the idea that the throttle will be less responsive, while at the same time I'll be experiencing more power...But, I'm not a mechanic. Maybe someone here can tell me what I can expect in real hp or torque numbers...or what I can expect with respect to my riding experience? I'm not looking for an endorsement or buying advice as much as I'm looking to understand what I'm about to do to my bike...I'd really appreciate any info you guys can provide.
Thanks.
  
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CanyonCarver
Expert Class
Posts: 121
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posted January 26, 2005 08:18 PM
If it's like Ivan's device, which I have purchased but have yet to install, it intercepts the Gear Position Sensor signal and tells the ECU that the bike is always in 5th gear.
In stock configuration, the timing is altered in 1-4 gears and in 6th gear, hence the selection of 5th. My understanding is that the fuel delivery is also shut off when you roll off the throttle and then switches back on again when you roll back into the throttle. This provides a jerky (for lack of a better word) transition that hampers smooth transitions in slower corners.
I don't believe that such a device can increase HP (nor does Ivan make any such claims). It is intended to provide a smoother running bike and more predictable response to throttle changes. Evidently, stock timing is retarded in the lower gears to soften the power delivery, for what purpose I can only guess.
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jrrgd
Parking Attendant
Posts: 6
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posted January 26, 2005 09:07 PM
Thks for the response. That definitely helps...
From my web/forum searches, these are two reasons I've seen for stock timing being retarded in lower gears:
1) Reduced exhaust emissions.
2) Safety.
Maybe someone can confirm or reject those statements...
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10rmotor
Novice Class
Posts: 100
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posted January 28, 2005 07:37 PM
CanyonCarver
If you haven't installed the TRE yet, could you run the part through an Ohm meter and find out what the value of the resistor is?
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