2-Stage Rev Limiter - Can I use the stock clutch switch?

Hondata installation questions / answers / issues.
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ben
Posts: 81
Joined: Thu Feb 12, 2004 8:14 pm
Location: Bloomington, IN

2-Stage Rev Limiter - Can I use the stock clutch switch?

Post by ben »

The dilemma is that I'd like to keep the cruise control (if possible), but I don't have a way of fabricating a locating bracket for the Hondata clutch switch.

So, I'm wondering if it's possible to use the stock clutch switch and simply tap into the stock PNK and BLK wires before and after the clutch switch for the Hondata box to use for the 2-stage rev limiter.

I'm guessing that the stock cruise control clutch switch is normally closed with the clutch engaged and the pedal is up, and then it breaks open the circuit when you push the pedal down to disengage the clutch (thereby also disengaging the cruise control).

The two systems would be working in conjunction with each other, so I don't foresee any potential for conflicts.

I just wanted to hear from others' experiences and insight.
ben
Posts: 81
Joined: Thu Feb 12, 2004 8:14 pm
Location: Bloomington, IN

Post by ben »

I got it figured out. You cannot use the stock clutch switch as is in conjunction with the Hondata 2-stage rev limiter.

The stock cruise control clutch switch circuit is normally closed with the clutch pedal up (clutch engaged) and then open when you push the clutch down. The Hondata clutch switch circuit works completely opposite to the stock switch so that the primary stage of the rev limiter is on when the circuit is closed (not open like I had hoped).

I'm not exactly sure of the repurcussions, but I think cruise control disable clutch switch would be ineffective and the Hondata would be stuck on the primary rev limiter all the time (until you pushed the clutch in).

It'd be nice if they would work on the same design so that you could use the stock clutch switch, still retain the functionality of the clutch switch for the cruise control, and be able to integrate the Hondata 2-stage limiter into the stock wiring....all without compromise.

I've resorted to removing the stock cruise control disable clutch switch and putting the Hondata clutch switch in its place. I'll just have to be careful with the cruise control (and possibly remove it again).
ben
Posts: 81
Joined: Thu Feb 12, 2004 8:14 pm
Location: Bloomington, IN

Post by ben »

My friend gave me an idea to use a relay to flip-flop the trigger pattern on the stock clutch switch so that the Hondata box can see the proper trigger.

I'm not real familiar with using anything but SPST relays, so I have to accustom myself to them so I can wire it properly.

The idea is that when the stock clutch switch breaks open the circuit, the relay will click over and provide battery voltage to the Hondata trigger and allow the primary launch rev limiter to activate when the clutch is down and vice versa to keep the primary rev limiter from being in effect when the clutch is up.

I hope it works.
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Spunkster
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Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Post by Spunkster »

If you place battery voltage into the interface box, you will damage it.
ben
Posts: 81
Joined: Thu Feb 12, 2004 8:14 pm
Location: Bloomington, IN

Post by ben »

Poop. Guess I'll have to figure out another way.
ScrapinSi
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Joined: Mon Apr 12, 2004 12:20 pm
Location: Norwich, CT

Post by ScrapinSi »

Instead of using the Cruise Control Switch, why not use the manual start lockout switch? Just Jumper out the OEM Wires so it will start without the clutch in, then use that switch for the rev limit.
DaX
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Joined: Tue Mar 18, 2003 3:48 pm

Post by DaX »

ScrapinSi wrote:Instead of using the Cruise Control Switch, why not use the manual start lockout switch? Just Jumper out the OEM Wires so it will start without the clutch in, then use that switch for the rev limit.
Is this how you did it? I want to know what it's like...if the switch has the correct amount of throw or not [I don't want the RPMs to drop before the clutch is fully disengaged].
kender
Posts: 25
Joined: Mon Aug 02, 2004 9:29 pm

Post by kender »

what voltage can the hondata box deal with? or better what voltage does it use with the normal switch? either use a resistor to lower the voltage that the box sees or if the hondata switch and the stock cruise control use the same voltage then tap the relay contacts ( not the coil ) just the contacts to the cruise switch and to the box and that way you can use 12v to energize it but the lower voltage to feed the signal. just some thoughts.
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