facebook1 youtube1 twitter1 instagram linkedin1 pinterest1

NOTICE:  If you are not a free registered member of the site, you will not see the photos in the forum, and you won't be able to access our premium member content. Please consider joining our community! REGISTER AND MAKE THIS BOX DISAPPEAR!

×

Pictures Posting Not Working (12 Jun 2023)

Picture uploads is again unavailable. We are working on the problem. Thanks for your patience.

Makotosun

AT3 125 Timing

  • Posts: 10828
  • Likes received: 4695

Replied by RT325 on topic AT3 125 Timing

Umm--interesting there TEE_CEE & welcome by the looks. So are using your dial gauge with the angled plug hole?. I don't want to open a can of worms--don't even like worms lol, so i'll 'say no more'. Sorry, say no more, reminded me of this. Don't even watch it lol. Ok, removed it haha its so #$%^ stupid--monty python.
 
The following user(s) Liked this Post: MarkT, Ht1kid, tee_cee
Last edit: 05 Jul 2022 23:11 by RT325.
05 Jul 2022 23:08 #11

Please Log in or Create an account to join the conversation.

  • Posts: 13
  • Likes received: 1

Replied by tee_cee on topic AT3 125 Timing

The angled plug hole does mean that the measurement is not exactly the piston travel. We are measuring the long side of a narrow triangle. It's probably pretty close.

Yamaha's method using a fixture that screws in the plug hole works the same way, so it seems they have already made allowance for this.

I found an online piston travel calculator. With a 105mm con rod, the points open at 20 degrees BTDC when advanced.

Setting the advance to open at 3mm only gets you to 25 degrees, so It doesn't seem super critical.
06 Jul 2022 11:45 #12

Please Log in or Create an account to join the conversation.

Moderators: yamadmin, Makotosun, DEET, Vinnie, James Hart