MSD Part 7561 RPM Launch Controller [Archive] - Chevelle Tech

: MSD Part 7561 RPM Launch Controller


mc71454
Aug 16th, 04, 10:39 AM
Part number 7561 - Aymone using this unit, It plugs into the rev limiter socket on your ignition box it is supposed to gradually let the RPM's go up as you launch and is activated when you hit full throttle by use of a switch of some kind.


Is this legal in Non-electronics racing, since it is a launch aid and shuts down after a second or two??

Description From MSD.....

Programmable Launch Rev Limiter,
PN 7561*
Too much power can actually be a hindrance when it comes to hooking up a small tire or the prop of a drag boat. For anyone with this “problem” the Programmable Launch Limiter is the answer.

Improve your 60-foot times through precise timing and rpm control.
Easy to program from a PC with MSD’s Pro-Data+ Windows based software or with the optional Hand Held Monitor.
Quick microcontroller produces a smooth rev limiting action.

By ramping the rpm in during the launch you can improve your holeshot and get the car or boat rolling before applying all of the engine’s power. You can also run the engine and watch the curve change in real time!

This microprocessor controlled Limiter plugs in place of an rpm module in an MSD Ignition or Soft Touch unit. You can then go in and program a launch based rpm ramp based on rpm and time. This is set in 100 rpm steps down to 0.001-second increments by using MSD’s Pro-Data+ software on a PC or with the optional Hand Held Monitor, PN 7550. There is also an adjustment that sets a delay time before the rpm limit activates. This way, when you launch the rpm limit will kick in exactly when you want it to and ramp up to your race rpm for the rest of the run.

This Limiter can be used with any of MSD’s Rev Controls that use the plug-in rpm modules. The Pro-Data+ software is supplied or can be downloaded here.

Programmable Launch Limiter
PN 7561*

mc71454
Aug 16th, 04, 1:24 PM
Never Mind, it is considered an electronic device and will not be allowed..