Hi from Corona central (UK) Looking for advice ;)

[cockneyrick]

Hi there, Needed to join & find advice about an issue & i found the "Clang" writeup on theflyingbanana.com that gave a shortcut to here.

However that no longer worked so i have had to take the direct route!

So before i dive in, i thought i'd best apologise first as i do not own a Katana. I have the following:

1978 Yoshimura Bigbored GS1098
1984 GSX1100EF
1986 GSXR1100F with 1127F Engined Drag Bike
79-81 Enough parts to make 3 GT250X7's

Anyhoo, the shortcut was to take me to somewhere on here that showed how to modify the ATU Bob weight to avoid the kickback damage.

I have 2 ATU's & have modded one but just need to see the writeup to make sure i'm not about to make a bad thing worse?

Many thanks for any help you can supply ;-)

 

[swoopswoop]

Welcome rick, I'm sure the boys will make you feel comfortable and get you the advice you need. Pretty sure there was talk of shaving down the counter weights.

 

[gtboy]

I've done this mod to my GS - it involves a bit of Dremel-ing of the bob weight stops to allow the ATU to rest (start?) in a more retarded state, i.e. you're resetting the advance curve to start at a lower advance point on startup which prevents kickback to the starter clutch and eliminates the 'clang' (and further damage).

I think.
Suffice to say, my GS hasn't 'clanged' since I've done this and my starter clutch is still in great shape.

I'm sure there's a write up elsewhere, I'll see if I can track it down.

 

[cockneyrick]

I've done this mod to my GS - it involves a bit of Dremel-ing of the bob weight stops to allow the ATU to rest (start?) in a more retarded state, i.e. you're resetting the advance curve to start at a lower advance point on startup which prevents kickback to the starter clutch and eliminates the 'clang' (and further damage).

I think.
Suffice to say, my GS hasn't 'clanged' since I've done this and my starter clutch is still in great shape.

I'm sure there's a write up elsewhere, I'll see if I can track it down.

Excellent thanks, i may have done it right already.
The one on left has the "lip" shaved down & one on right untouched.
This runs a Dyna S so the tiny gap tha appears to be on the LH one will be taken up by the Dyna rotor.
Does this look correct?