TOPIC:

to lock the pully you could machine a washer that has locking prongs that sit in the face surface of the pully and rotor end. just an option but id like to see it keyed. and i have seen small forklift alternators that might give you more carb space.

The alternator is pretty small. I like is has 40 amp output and is permanent magnet style. Once my velocity stacks and the new carbs get here, I'll mock it up to make sure the clearance is adequate.

The lock washer idea is a good one, just wonder it it would hold enough during accel/decel.

Cory

So I just thought I would post up my new project aspect.... So I messed up and bought a set of Kawasaki Zephyr 1100 wheels for my project. They are hard to find and I like the look. All was good until I found out the front is an 18" wheel. I want 17's....

I then realized, this bike MUST have what I have lusted over since Ducati released the GT1000 Classic...Wire Wheels. Spokes in 17"ers with modern, wide rubber is the look. So I need to start somewhere since nothing is really available to do this. I took a hint from a buddy, and started looking at Harley Davidson hubs. They are standard with their bolt patterns, axle sizes, and are symmetrical in appearance which should make them easy to adapt.

Unfortunately, there are three sizes of hubs - Narrow, Standard, And Wide. HD stuff is great as there is plenty of aftermarket support, but NO ONE EVER states the dimensions. So I bought three of them off EBay and will start to make them work.



First thing I notices, the rotor to hub bolt pattern matches! They are off by a hair, probable due to the metric vs. SAE dimensions. I can make it work anyway. The Hub of the rotor vs. the hub center ring is about .100" difference in the OD. I can make that work.



So measuring off my ZRX, it looks like this hub, w/ rotors are about .508" inches too wide. The narrow hub which is still on its way, I think is 1" narrow overall, which means I need .441" spacers...but we'll see.....



It looks like the hub has enough meat in it to notch it for the speedo drive ring. I am looking at rims, and I am wondering if I can get away with a 3" front and a 6" rear rim as those are the two cheapest sizes in a 17" for these hubs. If not, it will cost me about $700 in just hoops from Excel! I am excited about this.

Last question I have for the group, how crucial do you think a cush drive is? I will have to design and machine my own, or I can just get a sprocket that bolts directly to the hub like most Harleys... Any comments on this? To cush or not to cush is the question.....

Cory

Super nice work, look forward to see it finished.

NakedFun wrote: ... To cush or not to cush is the question....

www.advrider.com/forums/showthread.php?t=411129
Gloves or bare knuckles.

Good Fortune!

Oh I completely understand why it is there and it's purpose. I would be more certain of its need if this engine had the power pulse signature of a v twin. It would be cleaner and simpler if I didn't have to machine one....

Cory

Interesting article on cush drives...sounds like it might be a good idea to have one. After all, you don't want too much "snatchiness", do you? Come to think of it, maybe you do??

how much do you plan to ride the bike cory?
if i planned to ride it a lot i would want the cush drive.
if it was a round town bike i might forgo it and see how it acts,and then decide.


leon

Let's hear from the drag racers. How many launches are you getting om a rear wheel? I don; think it will be a problem. I didn't get a chance to read the article linked yet but do the new sportbikes have cush drive? That would be telling.
Wayne

I plan on riding this bike quite a bit as after I do this much work, I want to ride the blasted thing! Besides I have to practice not getting my leg caught in the belt drive! I have a lead on a Ducati cush drive assembly that might be adapted to work with the HD hubs. I am waiting on the seller to provide me some dimensions off of it. We'll see how it turns out.

I grew up on enduros that didn't have a cush drive, and never really noticed a harshness that was above the regular NVH that comes from riding a street legal dirtbike. I do understand that it can cause premature wear on the driveline, so I probable should have one. I tracked down a cush drive kit from HD, and it is fairly expensive. The one down side to it, it fits in the center of the belt drive pulley so I worry about how wide it is. If I bought it, I would have to machine the pulley off of the center disc and then create the sprocket holder.

Cory

So I have made a score on Ducati cush drive pins/hardware. I have my design sketched out for a cush drive that will bolt onto the HD hubs. I am going to end up using Suzuki SV1000 rear sprocket. So it should be set up well. We'll see once more parts start to arrive....

I also found Ebay caliper spacer brackets and ZX11 rotors... Can't afford them right now, but hopefully soon.

Cory

PM sent mate, i dont know where my last post dissapeared to?