VF500 F2 Rear Wheel Impossible!

So while rebuilding and messing around with my clutch slave I decided to clean up the front sprocket cover.

I noticed groove marks from the chain.




Maybe a 16 tooth front sprocket is a no no?

 

i understand this slow, but 99.9% of my riding i never touch the rear brakes.. tho we all dont ride the same these are custom parts to take a wheel from a total different bike and make fit on another is custom work some minor tweaks should be expected as for the tire clearance mine is the same under heavy cornering loads my rear rubs the swing arm. the pads where never made to wear this way YES your right but then again they werent made to have a CBR wheel sitting inside the swing arm.

 

So you are seeing the same things I am?

Why didn't you say so!?!

 

Respectfully, I would be concerned about a rear tire rubbing the swingarm under cornering loads. From what I have seen on Slow's conversion and now reading this post it seems like a 520 tire is too wide for a stock VF500F swingarm. I believe a 140 would be a better fit. This said, I haven't checked through various tire manufacturer's spec's but I am not sure a 140 wide tire is a recommended mount on the wider CBR600F2 rim - which has a 160 wide tire mounted as stock.

The rear caliper brake pad not seating fully onto the rotor is also a bit suspect. Even though the majority of braking load is taken up with the front rotors, brake pads should seat fully on rotors to prevent issues of uneven wear and loss of breaking power. If I could ask, is the new caliper carrier design working around a clearance issue with the F2 setup?

Thx!

 

Just a reminder that I'm running a 160 Dunlop D204 on my street VF500F and it works fine. Nothing rubs, not even under cornering. Tires will vary quite a bit, so I can only speak to the certain models that I've tried.

What Slowbird is showing is perfectly normal. In all of the years that I've been running my bike this way I've seen nothing weird. Remember, you are taking a caliper from a different wheel and making it work on the F2 one - what I've done is to line it up as best I can. This was done in an effort to ensure it's fully functional and performs acceptably, which I feel has been done.

Once again...... nobody has reported anything out of the ordinary. In fact, beside Slowbird, ever single hiccup experienced by folks using my kits (which is rare in the first place) was handled with just a single e-mail. I still contest that Slowbird is the 0.1% that you can't really explain or do anything about.

 

Thank you for the post Jamie. I appreciate the insight into the design and certainly understand the give and take of working across models and years. It is good to hear that other owners have not encountered issues with the brake pads.

What a puzzle the tire clearance is though - some 160's fit some 150's seem way too tight.

I wonder if there is a way to have a 'maximum width' specification so this can be avoided in the future. In researching tires, for my project bike, I emailed a bunch of manufacturers and most were very responsive and forthcoming on the actual tire dimensions.

With the maximum width dimension in your back pocket an owner could make an informed selection without the risk of encountering the dreaded clearance snafu.

 

Well my 150 Perelli measure to be about 155 wide. It is awfully close.

Also with the 16Front sprocket causing the chain to rub the cover and the 41 rear causing the chain to rub the guard it is hard to get the bike back to stock gearing after installing the smaller F2 wheel.

 

I'm going to give the stock ratio 15T/44T (for an '84) a try on my bike as they are still in good shape and I can mount the stock VF500F rear sprocket on the CBR600F cush drive.

Out of curiosity can you mount the stock VF500F rear sprocket onto the F2's cush drive?

Thanks for the intel on the 155mm mark. I know you are maxed out on the chain - which isn't the best - does your tire also rub the swingarm when cornering?

 

When I first tried the F2 wheel on I was running 15/43 and the gearing was shorter feeling than stock. Higher revs.

The VF500 cush drives are the same as the F2 ones IIRC.

I don't think my tire rubs on the corners. I have marks on the swingarm but they may be from installation. I gotta clean 'em off.

I spent alot of time trying to make sure the wheel is lined up properly and secure.

 

I believe the DMr kit uses the stock VF500F cush drive as a core and that it is mated (after machining) to the CBR600F2 wheel - wondering though if the stock VF500F sprocket mounts to a CBR600F2 cush drive. If it does than VF500F/CBR600F and CBR600F2 cush drives all share the same bolt pattern i.e. same rear sprockets.

From my calculations the change in gearing (going to a smaller 17" wheel) on an '84 with 15F/44R sprockets should result in an increase of about 100 revs at highway speeds. On a side note, I believe the '84/'85 models were designed to rev a bit higher - the '86 was de-tuned a bit (smaller bore on the carburetors/different gearing 15F/43R, different cams, etc.) - or at least this is what I have read.

 

No, the 500 and F2 have different bolt patterns.

 

5x5, thanks.

 

F2




vf500

 

Do they also list the CBR600F?

 

Same part number as the vf500

 

5X5, thank you for taking the time to post this.

 

really its nothing to be worried about, the 500's frame is weak so when you go flying thru corners with parts that can handle the corning loads stuff is going to flex it's just the nature of the beast... i stand behind jamie 100% i think if he felt that it would be unsafe for people to run these kits then he would'nt do it, jamie is a smart cookie that knows a thing or two

 

yes sir i am seeing the same thing as you are, and i did say so in my last post

 

Sorry....I must have missed that

If the frame flexes than the swingarm will move around....not the wheel in the swingarm.

The only thing that would cause the tire to rub under heavy cornering would be sidewall flex.

 

+1 on the sidewall flex being the issue here.

The 150 tire Slowbird is running (155mm actual) is too wide a tire - IMO.

Having the chain adjusters backed all the way out is a clear indication that things aren't copacetic.