what's up with the playboy on the front page? ;)

[thad_carey]

--- In DSN_klr650@yahoogroups.com, "Jim The Canoeist" wrote:

> I'm confused. Isn't the KACR only energized when the starter is

engaged?

> Are we learning that it also releases compression at low engine

rev's?

> > Are you telling me I am damaging something by going real slow with

the

> clutch out and then applying throttle? Is the automatic

compression release

> energized during this? > > I want to be sure of this. > Is there somewhere where we can read the theory and operation of

the KACR?

> > -Jim in AZ > > ----- Original Message ----- > From: "Ted Palmer" > To: "1KLRlist" DSN_klr650@yahoogroups.com> > Sent: Monday, October 13, 2003 7:16 AM > Subject: Re: [DSN_klr650] Re:more carb jetting NKLR > > > > > > Plenty of times when I have had my bike tilted right over at near

idle

> > speed I could feel the back end twitch out a bit with each power > > pulse once the throttle was opened up. It is what a 600 single

does,

> > original big-bang theory. > > > > If you routinely get into trials situations then it might be

useful

> > to disable the KACR to reduce the chance of stalling at below-idle > > revs. > > You can ride through an activated KACR, I have done it, but it

takes

> > a lot of throttle and the exhaust valve and seat under the KACR > > won't thank you if you do it a lot. > > > > Mister_T > > Melbourne Australia

The other poster's comparison to an old style centrifugal advance ignition system is a good one. The KACR is controlled by springs on the end of the exhaust cam that operate at a certain RPM. Though it's designed to operate at an extremely low RPM (supposedly too low to be a factor when the engine is actually running), one wonders where you might "bump" that point when chugging a KLR in some slow and rough terrain. I remember seeing a Kawasaki tech bulletin about a hundred years ago when I worked at the shop that even stated the approximate RPM at which the KACR is supposed to disengage, but too much tequila since then has fogged my memory. On the other hand, I never heard or saw any KACR problems during the 15 years I worked there or with any of the 4 KLRs I've had since '85. Thad Carey A15 (but Barbie'fied)

[Arden Kysely]

I don't have my manual handy, or I'd check--but is the KACR's operating RPM specified in the Big Book? As for determining the RPM by experimentation, you might be able to hear it engage/disengage with a stethoscope held up to the valve train while you start the engine, then again as you slowly reduce the idle speed. The KACR device is there to make it easier for the starter to turn over the motor, so I'm guessing that its RPM range is pretty low. How low is the question. __Arden

> The other poster's comparison to an old style centrifugal advance > ignition system is a good one. The KACR is controlled by springs

on

> the end of the exhaust cam that operate at a certain RPM. Though > it's designed to operate at an extremely low RPM (supposedly too

low

> to be a factor when the engine is actually running), one wonders > where you might "bump" that point when chugging a KLR in some slow > and rough terrain. I remember seeing a Kawasaki tech bulletin

about

> a hundred years ago when I worked at the shop that even stated the > approximate RPM at which the KACR is supposed to disengage, but too > much tequila since then has fogged my memory. On the other hand, I > never heard or saw any KACR problems during the 15 years I worked > there or with any of the 4 KLRs I've had since '85. > Thad Carey > A15 (but Barbie'fied)

[kcuf_oohay_666]

My dealer told me when I bought the bike that if I let the engine drop below idle RPM that I would hear a knocking sound and that sound would be the KACR. On a few ocations I have let the RPM drop below idle speed (1300) while not giving enough gas when releasing the clutch. I heard the knock but just gave a little more gas and the bike kept going. It doesn't sound nice, and you may hear 3-5 knock before either your motor dies or you give more gas and the knock stops --- In DSN_klr650@yahoogroups.com, "Jim The Canoeist" wrote:

> This is exactly my point (how slow?) but I read where others warn

about the system energizing at low speeds and having experience 'driving through it', etc.

> > > > How low is too low? I wouldn't think the weights would swing in

until some where well below idle speed if the weights swing outward with anything over starter speed.

>

[Alan L Henderson]

At 09:07 AM 10/19/2003 -0400, you wrote:

>> Thank you Walt. How do you know the compression is released at 800 RPM? >> What is the indication? >> -Jim in AZ >> > >The engine power dropped off to almost nothing >and there was a distinct change in the sound. > >Walt >A14 "War Horse" >

I always thought the indication was that while in the middle of a very low speed turn one hears a sharp bangclunk and the bike and you fall over. Alan Henderson A13 Iowa

[adamavis]

Can we maybe show bikes? I just ate here......lol!

[D Critchley]

I get the same symptom if I turn that little key off when the engine is running... looks like the start of a major thread here. DC

[Alan L Henderson]

At 09:07 AM 10/19/2003 -0400, you wrote:

>> Thank you Walt. How do you know the compression is released at 800 RPM? >> What is the indication? >> -Jim in AZ >> > >The engine power dropped off to almost nothing >and there was a distinct change in the sound. > >Walt >A14 "War Horse" >

I always thought the indication was that while in the middle of a very low speed turn one hears a sharp bangclunk and the bike and you fall over. Alan Henderson A13 Iowa

[Alan L Henderson]

At 11:40 AM 10/19/2003 -0400, you wrote:

>> I always thought the indication was that while in the middle of a very low >> speed turn one hears a sharp bangclunk and the bike and you fall over. >> Alan Henderson A13 Iowa >> >> > >That's what happens when you let the engine >stall and don't get the clutch in fast enough. > >Walt >A14 "War Horse" >

I've just always had a funny feeling that if the compression release weren't there the engine wouldn't have stalled. Really no way of confirming without removing or disabling the KACR. Alan Henderson A13 Iowa neither famous or fast