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Re: Singing the praises of the rev limiter

To: Andrew Murphy <solex675@hotmail.com>
Subject: Re: Singing the praises of the rev limiter
From: RWM <RWM@rwmann.com>
Date: Tue, 03 Aug 2004 15:31:56 -0400
Glad it worked for you.  One point, however.  Electronic limiter or not, 
it is possible to drive the engine beyond limits due to inertia effects 
in a missed downshift, and especially with a lightened flywheel/pressure 
plate.  Can't bet on a limiter to protect from that.  The limiter works 
best in an un-loaded missed shift, as in an upshift to neutral.

- Bob Mann  (BTDT, got the bent valves to show for it)

Andrew Murphy wrote:

> Hey All,
>
> A couple weekends back I took the roadster out and drove to one of my 
> favorite roads- Harbor Drive in Dana Point. It's a four lane road that 
> runs along the harbor and has some great sweeper turns on it. I like 
> sweepers as I find that balance point where I can hold the turn at a 
> constant rate of speed and test the grip of my yokos. Great fun.
>
> On this trip I was doing a left hander at about 75 MPH and I was in 
> the far right lane. Up ahead I could see a car pulling out of the 
> yacht club and making the left that would put him in the same 
> direction as me. Now as I was in the right lane I assumed he was going 
> to take the left lane as it was open. He didn't. He was an elderly man 
> driving a mercedes and he was going so slowly that he was actually 
> blocking both lanes by the time I had to make my decision as to what 
> to do.
>
> I was in 5th and quickly downshifted to what I thought was fourth but 
> I missed it and put into second instead. I know- the 5 speed 
> transmission is self-centering and I should have just let the shifter 
> find fourth but I was a little panicked due to the looming collision 
> so I pulled harder than I normally would have. I hit second gear at 
> about 65 mph.
>
> Luckily for me, my MSD 6AL has a built in "Soft Touch" rev limiter 
> that kicks in at 6000 RPM. It reduces the intensity of the spark and 
> also  fires every other cycle to ensure that fuel does not build up in 
> the cylinder. Worked like a charm. The thought of what might have 
> happened if I did not have it in place scares me. Well worth the money 
> I paid for it considering the price of a rebuilt head.
>
> So for those of you considering a Gary Boone EI dizzy (great product), 
> you may also want to consider a MSD 6AL. It may just save your engine 
> someday.
>
>
> Andrew Murphy
> 1967.5 2000 Solex
> SRL311-00489






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