I did the mod originally to my bike about 5 years ago I guess.
It's done it's job for a few trips to AZ, several camping trips up North as well as a boatload riding in traffic and the hills around here.
I hear now 3-1/2" pulley the others are trying to convince people is better than a 4" in that the alternator runs quieter (??) (doesn't make sense to me) and there are less clearance problems.
One guy even said there are no clearance problems!
Funny the stories we here from people that don't know and obviously never did this mod on an 1100.
I first put on a 2" pulley, even then radiator had to move forward.
Running a 3- 1/2" I'm pretty damn sure the alternator won't spin fast enough at idle to keep up with the stock loads.
Mine will but it's right there on the edge so it all depends on what you want really.
The reason I even did this in the first place was because I was making a bunch of stops one day, which I do sometimes for work looking for parts, picking things up etc.
Well this one time was like 5 stops and starts, each stop 5-15 minutes ride apart.
The second to last stop it cranked real slow and barely started. Last stop I had to push start it.
I swore that was the last time that'll happen to me on level ground! This is a heavy sumbitch.
Some have said the bracket I made is overkill.
Well I can tell ya it does flex so it is not overkill.
Independent of any external supports like to the fairing vibrations are kept to the engine as it should be just like on a car.
beav, I'm going to remove the pulley to show the machinists for a quote. I'll measure the bolt then.
Don't order anything or go by what anyone else says. The only way to know the true length using this pulley is if ya have it to measure.
arty:
