YZF600R wheel mod wrap up...... or why I'm not a dive bomber pilot

Fred · October 12, 2009, 06:02:50 AM

Quote from: higbonzo on October 11, 2009, 08:20:45 PM
Fred,

I have a question though, did you change your Dog Bones out? The need to be changed in length to compensate for the rear tire change. I am sure one of the Guru's here know how to determine the length. I couldn't tell you if it needs to be shorter or longer, I think it may depend on the bike, but I do know it puts the rear tire much closer to the ground when it is on the center stand. It will quicken your steering up even more.

Ride on......

Later......

No, there are no dog bones on an 86. I'm saving up for a Penske. Which leads me to a question. Is the top shock mount the same for an 89? I've given some thought to to putting an 89 swing arm on so I could play around with the dog bone length, but I am unsure if the shock is the same at the top

higbonzo · October 12, 2009, 06:48:20 AM

Fred,

The tops are the same, but the bottoms are different. I am not sure that the 89 is any better than the 86 design. You could purchase a newer rear shock and have the ride height designed into the shock, as well as purchasing a shock with adjustable ride height. Here is a pic of an 86 with the FZR1000 wheel and you can see how close it set to the ground, and you can also see the shackle for the swingarm are original looking. http://www.powaymotorcycle.com/gallery/yamaha/Bills_1986_FJ1200.html Bill is a great guy, and you could ask him how he determined the new ride height and how he accomplished this goal, although he is riding a ZZR1200 at the time he is still a great advocate of the FJ's.

He should also be able to provide the service and parts to get you were you want to be. This is a full time shop so if you contact him he may be a little slow getting back with you, but he will get back with you.

Later....

FJmonkey · October 12, 2009, 11:56:15 PM

Highbonzo, cool front fender, is that one piece? How much did it cost, where did you get it? If you don't mind my asking that is....

Fred · October 13, 2009, 05:46:49 AM

I'm not asking for much from switching the swing arm. It's just I would most likely go with the less expensive Penske, which I assumed wouldn't have the height adjustment. I know they will make it longer for me, but how long? What if I don't like it? With a later swing arm that uses dog bones I could find what works for me.

racerman_27410 · October 13, 2009, 09:51:06 AM

The Penske Sport shock does indeed have ride height adjustment.... you can ask traxxion to make it have extra ride height adjustment to give you more room to play and they will do it.

you really dont want to swap early for late model swingarms as there really is nothing to gain from it.

Kookaloo!

Frank

SlowOldGuy · October 13, 2009, 10:47:17 AM

Quote from: Fred on October 13, 2009, 05:46:49 AM
I'm not asking for much from switching the swing arm. It's just I would most likely go with the less expensive Penske, which I assumed wouldn't have the height adjustment. I know they will make it longer for me, but how long? What if I don't like it? With a later swing arm that uses dog bones I could find what works for me.

The Penske height adjustment (even on the Sport Shock) is a threaded adjustment on the lower mount. Therefore, it has infinite adjustment over the length of the threads. Witht he YZF rear wheel (and its slightly smaller overall diameter compared to the stock 16" wheel/tire assembly) you would want to get a slightly longer threaded lower mount. I'm almost at the end of the acceptable adjustment range with my '85 and the stock rear wheel. You've got to maintain a minimum of threads in the shock body for safety.

DavidR.

jvb_ca · October 13, 2009, 12:23:18 PM

Fred. My shock is installed exactly like it is in this pic....

You can see that there is more adjustment to go on the bottom mount. With this setup my rear wheel is about a 1/4 inch off the ground when it is on the center stand. I also have the YZF600 rear wheel, with a 170/60 Pilot Road tire. I am not sure exactly how much it raised the rear,as I never measured it before, but I do know that it quickened the steering.

Cheers...Jake

Fred · October 13, 2009, 04:01:22 PM

Ah OK, Thanks guys. I see how it works now. I haven't looked into it too deeply yet. Why get excited before I have the cash

Yamifj1200 · October 13, 2009, 05:57:32 PM

Quote from: Fred on October 13, 2009, 04:01:22 PM
Ah OK, Thanks guys. I see how it works now. I haven't looked into it too deeply yet. Why get excited before I have the cash

Fred Xmas is comming, ask fer cash... You wont regret the price once you have the Penske installed....

Eric M

thuber3040 · October 13, 2009, 06:00:50 PM

So is Penske the cult we all have to join?
Does it come with a pack of koolaid?
just kidding, I will be buying as soon as I sell my h2 or get a mood to sell it

higbonzo · October 13, 2009, 06:04:24 PM

Quote from: FJmonkey on October 12, 2009, 11:56:15 PM
Highbonzo, cool front fender, is that one piece? How much did it cost, where did you get it? If you don't mind my asking that is....

Couldn't tell you, not my bike. But it is probably a FZR1000 usd front fork set up, so I don't imagine finding that fender would be to particularly difficult.

This could be it for all I know, Bill does a lot of Fabricating and Modifications http://cgi.ebay.com/ebaymotors/Carbon-Fiber-Front-Fender-Yamaha-R1-YZF-1000-R1-04-06_W0QQcmdZViewItemQQhashZitem3a53b686d5QQitemZ250512574165QQptZMotorcyclesQ5fPartsQ5fAccessories

Later....

the fan · October 13, 2009, 08:11:00 PM

Its a 94-98 YZF750 or 94-96 YZF600 front fender. Its exactly the same as the one on my bike.

I purchaded mine off ebay a few years ago after crashing my bike and destroying the factory parts.

Fred · October 15, 2009, 10:24:03 AM

Quote from: thuber3040 on October 13, 2009, 06:00:50 PM
So is Penske the cult we all have to join?
Does it come with a pack of koolaid?
just kidding, I will be buying as soon as I sell my h2 or get a mood to sell it

No cult, just advice from trusted friends. The folks here have saved me headaches and pulled my butt out of the fire more than once. So when they tell me Penske is the way to go, I believe them. If I didn't have a good stock shock, which I have because of someone on this list, I would have to go with something else, but that would not make me think less of the advice I was given. It would just be a reflection of my financial position at this time. So while I know my mod will be even better with an aftermarket shock, I am willing to wait and save my pennies for a Penske, rather than take a chance on something else.

Yamifj1200 · October 15, 2009, 03:57:49 PM

Good thinking Fred. I bet ya wont be sorry for saving for the Penske....

Eric M

threejagsteve · November 12, 2009, 07:33:58 PM

Say, Fred,

Are you still running that uncut stock brake stay arm?

How much clearance between it and the 170? (Sure looks tight in the pic!)

TIA, and cheers!

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YZF600R wheel mod wrap up...... or why I'm not a dive bomber pilot

SlowOldGuy

the fan