Inverted fork install.

[hogrider]

I would be highly interested in pictures, and details of said shimming. You mention boring out a race. Did you change out to tapered bearings? It doesn't seem so. The front end looks great, and is inspiring.

I highly desire an inverted front end, without radial brakes. That 2001 GSXR Front will eat a 2002-2009 GSXR 600/750/1000 front wheel hopefully. I would like to put a 2003+ SV650 rear wheel on my XS650B, along with the brake upgrades that come with that. The 2002+ GSXR front wheel is a good match for the 2003+ SV650 rear wheel.

I stayed with the original yamaha bearings for this application. The shim I used is approximately .125" thick and placed between the race and the lower tree, keep in mind this is a starting point with addition or removal to accomodate the bottom tree clearance for your specific bike. I used the yamaha upper races and bored them to .180" to fit the new stem and yes I was able to install the retaining nut under the upper tree. On the rear wheel I plan on using a front wheel from a GSX-R and installing a belt drive system with a 6 piston caliper, first things being first I am focusing on the front end and will post updates as I progress along with photos of the changes made to the front and back, thanks for your interest!

P.S. A lot of questions, research, measurments, note taking, along with involvment with forums like this one will be the best resource for someone wanting to undertake a project like this or any other. You will also find that at the end of your project your best friends are Welders, Machinest, Painters, Electrical experts and an ATM, if one does not have any of these skills! LMAO

 

[ReycleBill]

The biggest reason for inverted forks is to reduce unsprung weight so that the tire spends more time stuck to the road and less time skipping through the air. Lowering unsprung weight will make the bike handle better and will probably cause a slight improvement in braking. But as most inverted forks come with modern brakes most of us would no doubt notice better braking.

Besides, inverted forks have a really high cool factor.

 

[Cafe-Dave]

Also, the larger diameter at the triple clamps + larger diameter (hollow) axle makes the entire system stiffer. Handling, braking are both improved. You also get better options for spring rates and damping.

 

[hogrider]

UPDATE! I have completed mock-up and ready to disassemble for fine tuning, other than having to relocate the gage mount which I incorporated into the the new headlight bracket things have gone pretty good!

 

[gggGary]

You guys make a convincing argument for the inverted forks. This thread shows a very tasty build with them.
Ahem, cough, cough. Must be my advanced age but i prefer the "old style" right side up forks on the XS650. I am all for the good brakes. Dual rotors multi piston all of that but still prefer to see a more traditional look. That said, Good for you guys doing what you want!

 

[hogrider]

You guys make a convincing argument for the inverted forks. This thread shows a very tasty build with them.
Ahem, cough, cough. Must be my advanced age but i prefer the "old style" right side up forks on the XS650. I am all for the good brakes. Dual rotors multi piston all of that but still prefer to see a more traditional look. That said, Good for you guys doing what you want!

I know, its a tough pill to swallow, but come to the dark side, we don't bite! LOL

Thanks for the complement by the way.

 

[Pyroladine]

Cafe-Dave, why do you not want the radial brakes. I thought they were all the rage?

 

[Cafe-Dave]

Radial brakes make wheel fitment difficult. Cannot space the brake caliper in-out separately, to do wheel spacing for the brake disc. You have to use rotor spacers, and are boned if you have to move the disc towards the wheel centerline. You then have to un-center the wheel. Not simple for custom installs.

I'd like to have the option to run a spoked wheel, by changing bearings and putting on a 320mm disc.

Or just running a Suzuki wheel, there is a lot of overlap for Suzuki front wheels. SV / gsxr / hayabusa fronts share disc spacing.

Also, I used to do wheel applications for performance machine. I've seen enough radial brakes

 

[gggGary]

OK fill me in "radial brakes"?????

 

[Cafe-Dave]

Sure. Highly simplified explanation.

http://media.photobucket.com/image/radial brakes/eebags/radialcalipers.jpg

Non radial mount

Radial mount

With the non radial mount, you can space the caliper separate of the rotor/wheel. It is difficult to adjust for 300mm / 310mm / 320 mm discs.

With the radial mount, you cannot space the caliper in-out in relation to the wheel. You must space the disc or the wheel. It is stone simple to adjust for disc OD. Every 10mm in diameter you go up, you place a 5mm spacer under the caliper mounting face and add 5mm to the bolt length.

Does that help?

 

[Pyroladine]

I have been reading everything I can on fork and wheel swaps and thought the idea of radial brakes was good. I had never thought about the lack of adjustment options. Thanks

 

[gggGary]

Thanks for the radial explanation. I guess even a old dog can learn a LITTLE something new(ish)
For those into the "old school" right side up forks the SV650 set up is a fairly easy swap on.

 

[Cafe-Dave]

That frame doesn't look very yamaha. Do the brake hubs have a 5 hole pattern? I don't see disc bolts, plus it looks like the rotor doesn't register to the hub.

I'm somewhat interested in a SV1000 front end install, to be able to use the 65mm mount families of brake calipers and 310mm discs.

 

[Purplezinger]

Thanks for the radial explanation. I guess even a old dog can learn a LITTLE something new(ish)
For those into the "old school" right side up forks the SV650 set up is a fairly easy swap on.

Hey GG, what frame is that?

 

[gggGary]

I welded shut and redrilled the rotor bolt holes to the Yamaha pattern they are a perfect fit otherwise. The caliper alignment is good may not even need caliper mount shims.

Custom chromoly flat track type frame.

Really need to put some hours in on this project...........

 

[hogrider]

Nice work! I like your style gggGary!

I was going to explain radial braking but the simplified version with the pics says it all, nice work Cafe-Dave.

 

[Vintageracer]

By the way I have a complete front end for a 1980 xs available, trees, forks, brake, rotor, wheel (polished with stainless spokes) if anyone is interested! There is a photo of it in the start of this thread.

PM sent on Front end assembly. THANKS!

Jon

 

[hogrider]

Thanks for the radial explanation. I guess even a old dog can learn a LITTLE something new(ish)
For those into the "old school" right side up forks the SV650 set up is a fairly easy swap on.

I have that same exact front end (2001 sv650), and it is available if anyone is interested.

 

[hogrider]

Cafe-Dave, tried to include the pics in a PM, no luck so here they are.

 

[hogrider]

Here is the wheel. I will get a cost on the shipping for the parts and PM you.