You can only say it wont move on a non locked
dist IF its already advance at idle.. the weights
would have already moved giving the advance... this
would be with weak springs.. at 3 or 4K it had better
be up on the advance.. a totally stock one would be

Mr P, I say it wont move even if the dist is into the weights at idle. That is: if you "freeze" the rotor position with your timing light with the can capped (& that is what the rotor phasing position is) that it will NEVER move from that position no matter what". Would you like to get (further) in on this (only $10 entry fee)!

unplug the can

yes this is with the hose off of the can/hose plugged so that we are only dealing with mech adv (slots/springs). Are you in brother!

Sure.. if you want to start at idle and work
up to 3k-4k... I will bet the timing changes..
the vac pot is open.. you will have the mech
advance for what ever its valued at... this is
of course it isnt already advanced by time its
idling.. do you know what the curve is(when the
timing is maxed out.. RPM).. let me know these
couple of factors

Gambling over state lines? Well, technically it's not gambling if its a sure thing... more like paying your tuition.
Seriously though, put a little thought into it. You don't have to bet on a losing hand.
For those that can accept it, here is a neat video on the purposes of needing rotor phasing.

www.youtube.com/watch?v=aWMlNwGW0tM

OK Rotor Phasing: position of rotor tip at cap terminal with it "frozen" in place with the timing light like a strobe light would do to people on a dance floor which is what the rotor tip/cap terminal relationship is when the eng fires. Vac can hose removed and hose capped (dont wanna vac leak). The can metal nipple capped or not capped or even the can removed as we are talking only if mech adv changes RP. I say it does NOT, not from idle to any RPM whether or not you DO or DO NOT have mech adv at idle (& yes at 4K you certainly will have adv in an unlocked "regular" dist. Any takers? Please! & I definitely will pay if I lose! EDIT It ain't gambling, it is "paid" edumacation (Moparts style). MORE EDIT yes the timing will change when the weights/springs move in the slots but the RP position will NOT change

AGAIN.. I will ask what your curve is.. is the
advance already in by idle.. and what the hell
is frozen in place... to me your saying its locked
because if you can turn the rotor with the engine
off then it has advance

Any curve (any springs/any slot length) whatever mech curve you have, the RP position will not change no matter how much or how little adv you have at any given RPM. "Frozen in place" I was referring definitely not to adv weights but to the timing light in effect "freezing" the rotor in its position in the hole you would drill in the dist cap. In other words the rotor ain't gonna move.

I have an old SUN distributor machine at work. I guess I could make a short video. I will have to see if I have any distributors.
Better yet, send me your distributor. I can:
A. show you how it works, or...
B. fix it so it does work.
No charge!
Have you ever put a light on the balancer? What is your idle advance compared to your 3000 rpm advance? No vacuum.
If you have advance, your rotor IS moving. That's not to say it will be out of phase, just that it is not in a "fixed" position.

Your on.. I say the rotor will move as the RPM
increases... a 10 spot.. the wife has paypal
so you can sent it

Thank you Mr P body! we're on brother! Tomorrow I will take a cap that already has the hole drilled in the top and I will install it & hookup the light and pull the hose and plug the hose & leave the can nipple open/as is and I will see if the rotor phasing moves at anytime. this is the dist in my 318 truck & it for sure has weights/slots & I will check from idle to ~4K so as to definitely be into the mech adv curve (slots/weights/springs). Trendz, you wanna in on this? My PP email is: rapidrobert at intergate dot com Just so we're clear, absolutely the timing will advance but we're talking "rotor phasing" & the RP positioning will not change. If it is pointed dead centered on the cap terminal (or slightly ahead or behind) now it will remain that way with the can out of the picture AND haveing a functioning springs/weights/slots advance system which is our point of contention.

Lookie here. Explain how the ignition timing can change without the rotor moving in a working mopar distributor with centrifugal advance.

I've done this on my dist machine before.. the
rotor has to move since its advancing timing

Trendz are you in! for real now ($10). Lets get the bets placed then we can get into the details on why it will or wont work. EDIT Mr P body, the rotor phasing (rotor tip to cap terminal alignment) does not change from the weights advancing the timing. MORE EDIT Trendz yes the rotor tip moves in a circle but the rotor tip to cap terminal alignment (rotor phasing) does not change no matter how much or how little mech adv there is at any given RPM. No mas, place your bet

Poker. You are bluffing. Just admit that you are wrong. It's the best thing for you. The next step here is an "up the ante" and that wont work out well for you.
Did you look at the picture? I'm GIVING you mercy. All I want here is for you to put "TRENDZ teaches truth" in your sig. No bet, but I'll gift you $100.00 if I'm wrong.

Crickets....

Lets do this: all (3) of us will tomorrow toss on a dist cap that has a hole drilled in the top or the side onto our non locked out dist then pull the vac can hose off & cap the hose & hookup the timing light then start & idle it & rev it & the rotor (tip) phasing seen in the dist hole will not change (I say). if it does change I will post what you ask. If it does not change then gift me $10 which is the same donation Mr P body is going to make (my conscience would bother me if I took a hundred)!. Are we on?

I'm in... I'll be happy to take the money...
I've played this game before(not as a bet but on
my dist machine)
EDIT
I wish I hadnt sold that dist machine.. I would
have put a dist on it with a camera/video to show
you that it HAS to move to have advancement

The rotors tip is about a 1/4" wide, why, because it does indeed rotate, but needs to be that wide because the spark event will occur between that rotational spectrum, based on mechanical and vacuum advance.

Keep me out of the bets.