Scissor Gears

[Aaron[MA]]

This might look familiar; I cut and pasted exactly what I posted on the blue board:

Can anyone who has removed them comment on how much louder the engine is with the scissor gears removed? Thought I had a bad cam chain tensioner, so I replaced them but the noise I was hearing persisted. We took the cams out and found that the scissor gear on the intake cam of the front cylinder looks like it's been binding up somehow. There was a bunch of brown/rust colored crud/gunk between the scissor gear and the cam gear, and the ends of 3 out of the 4 springs are chewed up/ground down as is the place where they contact the scissor gear.

So, thinking about just removing them. Any opinions on just removing them from the cams in the front cylinder? - leaving the rear cyl alone- I'm lazy.
Thanks guys

[Duken4evr]

For what it is worth, my opinion is that if there is grinding and weirdness going on, by all means, remove them from the front cylinder. You don't want shavings and breaking things dropping into your crankcase.

AS the front cylinder is more work to get to than the rear, which is gonna be pretty much accessible anyway. You might as well do both cylinders, despite the laziness factor.

Might as well take off the decompresser hardware too while you are at it.

[Aaron[MA]]

No one has removed them? C'mon!

[SDTLR]

Do them both lazy ass

[Dover338]

what the heck is a scissor gear?

[Duken4evr]

People have removed the scissor gears and the decomp mechanisms. Been thinking of doing it myself. Maybe during the next valve adjustment. Here is a thread on the subject.

http://www.tlplanet.com/forums/showthread.php?s=&threadid=8006&highlight=scissor+gear

I suppose the bike will make more cam gear whine with the scissor gears gone. That might be a good thing. I have always liked the TL's cam gear whine over the throb of the exhaust. Go for it!

By the way, for Dover, the scissor gear sits alongside the cam drive gear and is spring loaded and offset a bit. It is supposed to take up the "slack" in the straight cut cam gear drive and make it quieter. Makes sense then that the whine of the gears gets louder when you take it out.

[kiwi]

Have a talk to these guys I know they make cam gears that get rid of the scissor gears,good luck http://www.faliconcranks.com/whathot/wh.htm

[TLR-NUT]

I removed the scissor gears and de-compression crapp about five years ago. Removes 1.5 LB off the cams. The gear whine doesn't get any louder, just a little different tone. The motor will rev quicker and pick up 1 or 2 hp. This is a great mod. I've since switched to VeeTwo cams that also don't have the scissor gears.

[Flood]

If you are going to remove them from the front, do the rear cylinder at the same time. Might as well do the decomp lever as well.

Dont be lazy. do it right and do it soon or dont ride until you can... shavings in the motor are not a good thing.

[JarkkoT]

Honda's SP01 & probably SP-2 too has also scissor gears. And it is usual mod to remove them... Performance Bike magazine succested that Honda also gets 1-2 hp more with this mod, and revs quicker..

And you loose some weight, 1.5lb is alot, is that with decompression system or not..?


JT

[russomf]

scissors gears?

OK so I got out the manual and started loking through it to see how to remove all of this since i have to go in there this winter anyway (12k service) and cannot see what you are talking about. :dunno could someone please post a pic of the gears that need to be removed. I have the manual and it gives a pretty good parts breakdown on 3A-0 and cannot make out what has to be removed. I am just . I attached the page from the manual.

[Aaron[MA]]

They are on the outside face of the gear on the end of each cam. There are 4 springs - forming a square shape - that provide the tension.

Is the decompression stuff just for easier starting? Removing it doesn't stress the starter motor?

[Flood]

Originally posted by Aaron[MA]
They are on the outside face of the gear on the end of each cam. There are 4 springs - forming a square shape - that provide the tension.

Is the decompression stuff just for easier starting? Removing it doesn't stress the starter motor?

That is your scissor gear. easy to remove. Pull the c-clip and pry the gear off slowly. watch for flying springs as you dont want to get one in the eye.

The decomp lever does make for easier starting, however, my last motor had very high compression... no problems with starting it. Removing the decomp lever is a little harder as you have to cut it off. be careful and take your time so you do not nick the cam lobs. wrap the lobs and duct tape em with a few layers in case you slip with whatever you cutting it with.

[Screwloose]

only thing i have heard that when removed ...engine ticking n stuff is much louder....


i think mine must already be out

[metwohot4you]

What kind of effect will this cause with daily street use. Any down sides to this FREE HP?