Yes I am aware of co efficient of friction. I took off my stainless rotors on my '91 Fatboy and put PM cast iron rotors on it. Made a helluva difference. I couldn't find any data on CMM co efficient of friction anywhere so I assumed it was very similar to ss, I figured if it was greater they would plaster that fact all over the place. And yes SS sucks , even worse when some yay who polishes them, LOL.

 

Yes when I first installed my rotors I didn't notice any improvement but as they filled in with pad material they got a lot better. I would say if you could get 2-pc cast iron rotors for a touring bike you'd have really good brakes.

 

You really don't need 2 piece iron rotors they are much more thermally stable than ss. The only issue may/can be the thickness needed sometimes may be different than the ss rotors on the bike. On my FLSTF I remember there was some wrinkle concerning that, either the fr or the rear needed to be thicker than the oem rotor so we needed to replace the caliper, I think it was the rear but I cant remember, it was 20 years ago, LOL. Also they were Flash Chromed so as the pads scrubbed off the chrome on the rotors it exposed the raw iron. Then you removed the pads and sanded them lightly on a surface plate to remove the chrome particles and re installed. Then you could get after it. The rotors would obviously get light surface rust on that area on the rotors and the chrome being only just 1 stage flash chrome wasn't aesthetically pleasing but I didn't care I was after better braking and the chrome stopped the rust where the pads didn't track on the rotors.

 

Winter is coming,most companies will have some kind of sale. I got lyndalls a cuople of years ago,the discount basically gave me free pads.

 

They currently have no pads and cannot supply a set of three rotors, so anyone wanting a new set-up is likely to be out of luck!