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25T Kawasaki Pulley (Read 2482 times)

650Finch

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Re: 25T Kawasaki Pulley
Reply #150 - 09/18/24 at 20:40:41

I would be doing this in my dirt driveway with limited tools. Think I’ll just go for the pulley. The speed limit is 75 on the freeway in AZ and I feel like I have to push it a little hard to keep up with traffic. This seems to be the easiest upgrade to achieve some sort of rpm reduction while cruising at 80+mph. Please correct me if I’m wrong…

1998 LS650 Bone Stock

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Armen Serious Thumper Offline Half-Witted Wrench-Jockey from Jersey Posts: 1454	Re: 25T Kawasaki Pulley Reply #151 - 09/19/24 at 10:50:50 The rear axle spacer swap is only little more involved than removing the rear wheel. Just for giggles, grab the rear pulley at 3 and 9 o’clock and see if it rocks back and forth.
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Dave YaBB Moderator ModSquad Offline SuzukiSavage.com Rocks! Posts: 18313 Camp Springs, Kentucky Gender:	Re: 25T Kawasaki Pulley Reply #152 - 09/20/24 at 03:21:41 650Finch wrote on 09/18/24 at 20:40:41: This seems to be the easiest upgrade to achieve some sort of rpm reduction while cruising at 80+mph. Please correct me if I’m wrong… Cruising at 80mph........Perhaps you have the wrong motorcycle!
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ThumperPaul

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Re: 25T Kawasaki Pulley
Reply #153 - 09/20/24 at 04:43:08

To answer your question, changing the front sprocket is probably the easiest way to reduce rpms at higher speeds. Go for it!

Personally, cruising at anything over 65mph on this bike feels unnerving. It feels like it’s gunna blow up, get death wobbles, or the vibration is gunna make the bike fall apart. Add a little wind and funky road contour, and who knows where you’ll end up.

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Re: 25T Kawasaki Pulley
Reply #154 - 09/21/24 at 04:57:39

Using a 140/90-15 rear tire can also bump up your gearing a bit.

Several members use this oversize tire to gain some reduced rpm and high speed stability. The tire is big and heavy - so you will give up a bit of acceleration and the "flickability" of the bike (Physics declares a larger/heavier tire will resist changes in speed and direction more than a smaller/lighter tire). You may need to change the bolts that hold on the chrome side rails to ones with flatter head - the stock bolts have flanged hex head that are tall and can rub the bigger/wider tire.

Someday I will be old......But not today!

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650Finch YaBB Newbies Offline Born to ride, Ride till I die! Posts: 10 Tucson AZ 🌵 Gender:	Re: 25T Kawasaki Pulley Reply #155 - 09/21/24 at 13:08:50 I am already running a metzler 140/90 15. I’m in the market for a new bike but my budget is low. I picked this 98 ls650 for $200 and put another $500 into it for my Daily. If anyone in AZ near Tucson has a cheap bike for sale that would be better equipped to run the freeways out here i would love to come take a look.
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650Finch

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Born to ride, Ride
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Tucson AZ 🌵
Gender: male

Re: 25T Kawasaki Pulley
Reply #156 - 09/21/24 at 13:19:04

Armen wrote on 09/19/24 at 10:50:50:

The rear axle spacer swap is only little more involved than removing the rear wheel.
Just for giggles, grab the rear pulley at 3 and 9 o’clock and see if it rocks back and forth.

Wiggles only very slightly if any. Bike has just over 18k on it. Is this something that wears out quickly or a design flaw?

Is my belt supposed to have slack or should it be snug? When I replaced the rear innertube I tightened it up snug.

1998 LS650 Bone Stock

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ThumperPaul Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 2150 Houston, Texas Gender:	Re: 25T Kawasaki Pulley Reply #157 - 09/21/24 at 15:49:28 At the lowest point in the middle between the front and rear pulley, you want about 3/4” of free play on the belt. 1/2” is too snug, 1” is too loose.
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