I pulled mine out, it made the bike clattery, then I put them back in before I sold it. It sounds much better with them in. I never had any trouble, but I figure it really is not worth the work.
Here is an interesting article that may apply as well. It may be the cams need a certain amount of "flywheel" and isolation from the sharp power pulses of the big V-Twin engine for accurate valve timing at high RPM. The scissor gears provide both things. I would leave them in.
yeah it is loud as hell.I am now used to it though and don't care. WHen you take them off and put all of the pieces in your hands you will be amazed at the weight savings. You can put them back on in an hour( at least the cam scissors) so no biggie.
And I am wondering, why are TLs so loud without scissor gears? Other bikes don't have them and they don't make that racket.
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