X12 motor timing explained??

[c0sie]

My X12 6.5 comes with timing insert number '4', which is X-10'

Firstly, as a total timing n00b, is -10' a higher timing than the +10' that is given when using insert number '-' ??

Also, the printed instructions that came with the motor shows timing number '2' as the standard insert whereas the LRP online manual states that number '4' is standard. Any ideas which is correct?

Thanks

[chris_dono]

"-" = retarding the timing
"+" = advancing the timing.

You have a standard insert which is marked 0 (if i remember rightly). It's the one that isn't rotated either way when inserted.

The two other inserts, depending on how you put them in, will give you
-10
-5
+5
+10

[c0sie]

Hi Chris,

The motor came out the box with insert 'oooo' which is -10'. This is, according to the LRP online X12 manual, the standard factory setting...
However, the printed X12 manual that came with the motor says that 'oo' is the factory standard setting, and that insert is 0' timing.

Im confused though. 'oooo' is equal to -10' timing, and is the same timing that Hupo used at the Euro's. What would minus timing do then compared to zero? Offer more bottom end grunt? Run cooler??

Any answers are greatly appreciated as im totally learning this all here

[_sleigh_]

The main thing to remember here is that the timing it being described as either +/-10 from a known timing point. It isn't +/- from 0.

I think from memory Reto from LRP told me the X12 motors are timed to 40deg and you can adjust -/+10deg from this point.

[c0sie]

Thanks Phil.

Do you run the same timing insert at all meetings or do you switch and change dependant on the venue?

Also, do you know what the difference in performance is between the minimum and maximum timing avaliable?

Cris

[DCM]

+40' timing is a lot, so to run the -10 insert would be about right.