2007 R1 Front and Rear end........

[Grey runner]

  That looks really cool, I will be interested to see how it works.

[axiom-r]

  That looks really cool, I will be interested to see how it works.

The bike has been fantastic...  to say I am newly in love with it again would be an understatement....  I did a full day's ride on HWY 33 into Ojai, CA recently and the bike performed flawlessly.  I am corning much deeper than I used to and my confidence is definitely bolstered - especially by the brakes.  With the old wheels, suspension and brakes I had substantial "chicken strips" on the tires.... now (with seemingly no effort in riding style) the strips are less than a 1/4" at the edges of the rubber!

After getting some saddle time I went back to adjust the suspension again and discovered that the shock is topping out with the amount of pre load I desire. So I contacted Penske and they sent me a 1200lb spring.  I should note that this will be the second time the shock is coming out- I installed the Torrington Bearing Kit (as Pat had suggested) and now I can actually adjust preload not just bend the skinny bar they send you to do the job- for anyone buying a new shock the bearing kit is a MUST HAVE.

Anyway,  compression pre load on the 1100lb spring was kinda high, compression dampening was near the max and I was not riding with touring gear or a passenger so the conclusion is I need more spring.  Also, the front end (in stock configuration) feels stiffer than the rear.  The hope is bumping up 100lb to 1200 total will allow me to set a lower pre load, and reduce compression dampening to closer to the middle of the adjustment range..... and make the rear end have the same stiffness that the front has.

Do you find it harder to "come in from the garage" these days? A couple last glances before closing the garage door? That's what I would do, anyway.

YES!!!  I sometimes sit there with a beer at 10:30PM just gawking it the FJ...  You know this was my first attempt at a major modification and I think I am still a bit startled that it worked out so well!!

tim

[derbybrit1]

How is that chain alignment?  I expect that the R1 swingarm and rear wheel are substantially offset to the left, and would require a countershaft sprocket with a lot of offset just to clear the tire.  Have you checked the centering of the wheel with respect to the front wheel?  Others have assumed centered in the arm is centered on the bike.  That would be a mistake. 

Back when I looked at R1 arms mid-2000 decade, the underslung 2004+ versions were new/rare/pricey/un-modded.  The earlier type, with reinforcing braces above the arm interfered with the subframe.  They can and have worked, but the underslung is much better.  I applaud your pioneering effort.

[axiom-r]

Hi Derby - Thanks for the props!  The mods have worked out awesome and the bike rides like a dream. The more miles I log the better it seems to get!

The chain is aligned nicely- you can read through the thread for details but it is a 1/4" offset from PBI Sprockets.  The thickness of the sprocket at the mounting splines area was too thin leading me to believe it was actually an R1 sprocket. I had a shim washer made to ride behind the sprocket (from memory 2.33mm thick - check the thread).  Had to use an XRJ wider sprocket cover, longer shift shaft & clutch push rod all obtained from Randy at RPM.

I did not get too worked up about alignment of the rear wheel to the front wheel because I used the entire rear end from the R1. All I had to do was make sure that equal amounts were trimmed off the swingarm mount areas and then deal with the offset in linkage.  As mounted on the R1, the R1 swingarm was designed to align the rear wheel with the front - as long as I did not attempt to alter the offset by trimming less from one side, the rear wheel would stay on center - so we trimmed equal amounts from the swingarm mount area until the unit fit into the slot - then looked to see if it would clear for its full range of motion.  The stock exhaust had to go as did the center stand but those were the only two issues.  While we could have made this issue highly complex- I realized that there really was no decent method to measure the alignment (with confident accuracy) so I gave up on trying to calculate the problem and instead focused on not making any change that would move the stock R1 rear wheel offset.

The stock FJ shock is offset to the left too (but not as much as the R1) and uses a very wide 40mm mount for the shock top- I was able to deal with a majority of the shock offset problem by moving the shock all the way left in the wide top mount and using a spacer for the gap at the right side.  The other offset compensation area was where the dogbone ties into the frame- a pretty large spacer (40mm or so) was used there too to push the linkage all the way left.

This approach allowed me to ignore alignment issues that would have come up using parts from multiple bikes IE: GSXR wheel into a Thunder-ace or stock swingarm or any other combo etc.  I did not have to make any changes to the way the R1 rear wheel mounts in the R1 swingarm... it was all about symmetry in the trimming of the swingarm mount.

Read through the thread and check the pictures on these details- I would encourage anyone with an FJ to consider the R1 stuff..

cheers- tim

[pajoXJR]

I know its older topic.

Please could you give more info how did you extend forks. Thank you.

[giantkiller]

I had extensions made for my gsxr front end. Mine are a little over engineered a slot with 3 pinch bolts on the part that slides over the top of the forks. Billit bike bits in the uk will make them to your specs. They just use a set screw to hold the top of the forks. Check my pictures

[Woodsman]

I take my hat off to you sir. Great job. Did you ever fit the 4 into 1 from sandy? I was in touch with them today and they have none left in stock and said they wont be making any more till the spring. Guess i will have to wait till then so.
Do you foresee any issues fitting it on the fj? 

[axiom-r]

I know its older topic.

Please could you give more info how did you extend forks. Thank you.

If you read through the thread you can find the link to Cycleoneoff - they are made for the V-Max to receive an upside down front end.  I actually intend to have some custom ones made with pinch bolts as mentioned by giantkiller in his post- the set screw approach is what I want to change about mine.  They should have pinch bolts... but they do work.

I had extensions made for my gsxr front end. Mine are a little over engineered a slot with 3 pinch bolts on the part that slides over the top of the forks. Billit bike bits in the uk will make them to your specs. They just use a set screw to hold the top of the forks. Check my pictures

Would love to see the shots of yours giantkiller - are they uploaded?  I could not find them.

I take my hat off to you sir. Great job. Did you ever fit the 4 into 1 from sandy? I was in touch with them today and they have none left in stock and said they wont be making any more till the spring. Guess i will have to wait till then so.
Do you foresee any issues fitting it on the fj? 

Thank you Woodsman- I have only installed the down tubes from Sandy's so far.  The 4 into 1 is still in cardboard- I will likely put it on this spring.  I do not expect any problems but I do expect that it will have to be trimmed a bit at the muffler connect.

Cheers- all!


tim

[Pat Conlon]

Hey Tim, FYI Derbybrit is none other than the infamous Marc Rittner, who knows a thing or two about modifications....and what it takes to get a 1000cc twin to do 200mph in a standing mile....$$$$

Marc, Tim you two gotta meet....

[NOX]

Good project! 

I have a similar project..
- rear end - R1 2006 + wheel 190 (use offset front sprocket), Shock from R1 + spring Hyperpro 1300lb
-front end - Busa 2006 + handlebar ProTaper
+big oil cooler with fan, temp sensor, wiseco 1314, Barnett, Dyna20000 and many delicious

http://webfile.ru/6631710
http://webfile.ru/6631739
http://webfile.ru/6631740
http://webfile.ru/6631738
http://webfile.ru/6631736


....unable to insert photos...

[aviationfred]

Good project! 

I have a similar project..
- rear end - R1 2006 + wheel 190 (use offset front sprocket), Shock from R1 + spring Hyperpro 1300lb
-front end - Busa 2006 + handlebar ProTaper
+big oil cooler with fan, temp sensor, wiseco 1314, Barnett, Dyna20000 and many delicious

http://webfile.ru/6631710
http://webfile.ru/6631739
http://webfile.ru/6631740
http://webfile.ru/6631738
http://webfile.ru/6631736


....unable to insert photos...

Great photo's and awesome looking mods. Put a post in the 'Introductions" section and introduce yourself.

Fred

[rktmanfj]

Here you go:

[jscgdunn]

This set moved the key back to center- only minor hassles getting the ignition mounted up and allows the steering lock to work as is....  You can see the Cycle One Off fork extenders below the triple clamp.  These added 2" to put the total fork length back to stock and they have some room below the clamp so if needed I can reduce the total length a bit by dropping the clamps down the forks...  Best part- this cost about half of the cost of an Gen II FZ1 set which was the other suggested path...  

tim

Hi Tim,

Your project has inspired my winter modding madness;  Currently installing 2009 R1 front end with 2009 FZ! top triple and bars.  I followed your approach for the triple, using the FJ stem and the R1 lower.  What did you figure out for the steering stops?

Thx,

Jeff

[Pat Conlon]

Hey Jeff......Tim (axiom-r) has not posted here in awhile (last post was in Jan.)

I suggest you contact him via e- mail, otherwise it might be some time before you get a reply.

Cheers, Pat.

[jscgdunn]

Thanks Pat,
Appreciate  the heads up,

Jeff