Re: Farmall A HAND CRANK KICK BACK

Posted by John T on April 13, 2007 at 11:43:09 from (66.244.90.5):

In Reply to: Re: Farmall A HAND CRANK KICK BACK posted by A. Bohemian on April 13, 2007 at 10:40:24:

Wow, Greattttttt n fun discussion guys, buttttttttt if IH Mags are anything like Wico ?????????

AT HAND CRANK RPM AND AT ANYYYYYYYYYYY RPM LESS THAT 150 TO 250 OR SO (i.e. while starting) the Impulse trips (according to where its adjusted of course) which should be somewhere around dead TDC....

Then (how Wicos perform at least) the timing advances to the 25 to 35 BTDC ONLY AFTER the 150 to 250 RPM range when the impulse becomes disabled i.e. she snaps/impulses (depending on where its adjusted) to fire near TDC at hand crank RPM and CONTINUES TO FIRE THEN UNTIL AFTERRRRRRRRR 150 TO 250 RPM when the impulse is disabled PERIOD ..............WITH NO 25 TO 35 "RETARD" SOMEWHERE IN BETWEEN.

I just fail to see how or why they would somehow snap at the adjusted point (near TDC) when hand cranking,,,,,,,,,,,,,,,,,,,,,,,,,,,,, but then somehow change to 25 to 35 RETARD,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, and then over 150 to 250 RPM change again to 25 to 35 BTDC ADVANCE?????

On the Wico Mags the reason n how they advance over 250 RPM is simply cuz centrifugal force causes the engage dogs to suck in whereby the spring wind n trip (impulse) mechanism IS DISABLED That way they fire at the static starting timing (which one adjusts to near TDC) while cranking and up until 250 RPM, butttttttt above that since the engage dogs dont extend they fire at the advanced run timing which is a function of the drive cup (like if its a 25 or 35 BTDC cup) plus the dynamic rotational mag timing adjustment.

The so called "Lag Angle" is how much the static start (impulse) timings Lagsssssssss the advance run timing and its adjustable. On the Wico Mags (and I would guess IHC are the same) theres ONLY TWO times, the static start (Impulse) timing and the advance run timing over 250 RPM with no other 25 to 25 RETARD at some time after hand cranking but before 150 to 250 RPM ??????????????

HOPE THE IHC MAG EXPERTS CAN CONFIRM OR SHOOT THIS DOWN LOL Do they have ONLY a static start time (impulse) and an advance run time over 150 to 250 RPM

orrrrrrrrrrr

Do they fire at TDC,,,, then Retard to 25 to 35 AFTER TDC,,,,,,,,,then go back to 25 to 35 BTDC Advance

My bets on the former i.e. ONLY a start impulse static timing and an advance run timing over 150 to 250 RPM PERIOD??????

God Bless yall, take care SPRING IS CLOSE BYYYYYYYYYYY

Will an IHC Mag expert PLEASE answer all this ??? makin me curious

John T in Indiana

Replies:

• I Will Defer... A. Bohemian 12:11:13 04/13/07 (4)
  • Re: I Will Defer... John T 13:29:14 04/13/07 (3)
    • Re: I Will Defer... Owen Aaland 15:05:24 04/13/07 (2)
      • Re: I Will Defer... John T 15:45:30 04/13/07 (1)
        • Re: I Will Defer... Owen Aaland 05:46:05 04/14/07 (0)

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