De-stinking Penelope

[rustybronco]

Does the drilling REALLY affect cooling that much as to be able to run a thinner disc? And yes, they are well within the wear limits... I did check that before installing... haha.

To say how much cooler they will run when drilled, or being able to run a thinner disc in place of the thicker one is a bit above my pay grade. Off hand, a thinner drilled disc will dissipate heat faster than a solid thicker disc. Conversely it will heat up faster as well.

I'd rather use the later calipers and slotted brake rotors on it, but the bike didn't come with them. If it had, I'd use the slotted rear rotor I already have.

[rustybronco]

the rest is some what of a GS legendary story to say the least.

It will be things 'legends' are made of when I'm finished with it. Thankfully I've been given or acquired a Gazillion parts of which to choose from.

Hm... that's concerning. I'm running the stock disc on the back of mine... but I'm running 2 GS850 slotted rotors on the fronts, but still using the original "circle pad" calipers (exactly like the ones in your picture, Dale).

These ones are a LOT thinner than the stock ones from the 78' GS750E (which are the 5 spoke, non-drilled).

Does the drilling REALLY affect cooling that much as to be able to run a thinner disc? And yes, they are well within the wear limits... I did check that before installing... haha.

[rustybronco]

I don't know if thinner is such a wise idea, heat and all that sort of stuff. Plus the caliper piston boot is only designed to travel so far. Personally I think it wise to stick with what the factory designed it to have.

The front's have a minimum thickness of 4.5mm, the rear is 5.6mm (??).

[chuck hahn]

Thinner on the back will heat up quicker and the specified work limits of the pistons (with pad wear) is extended a bit also. Thatsn why the single rear is thicker..best i can figure anyway.

Wow... I'm glad you're saving her! I thought mine was bad... hahaha... The stuff of legend indeed... I will now be more intently following this... I guess that rings true with the 'de-stinking' part.

I thought it was OK to go thinner? No?

[chuck hahn]

Pigeon crap to be more specific and it was sunk into the old straw and other "organic matter" as you can see the scum line on the rims. I was the guy that found it and got on the phone and called Dale..the rest is somehwhat of a GS legendary story to say the least.

[rustybronco]

Danny, lets just say it was a barn find.

As in, found in a barn, literally buried and covered with crap.

Did you notice the erosion on the aluminum rim in the area where the tire was all checked?

[chuck hahn]

Danny...you dont know the full story, but your not far off..Dale will get you up to speed.

[chuck hahn]

The two front ones are thinner than the single back one... fronts wont go on the back.

I've got 2 of the 5-spoke rotors... same offset and width... Then you can use one of your re-done ones for a rear .

It'll save you the hassle.

By the way.... was this bike sitting in a swamp when you picked it up?!?!! I've NEVER seen dry-rot on a tire like that!!!

[rustybronco]

Chuck, I'll look before I leave for work tomorrow morning and PM the info to you.

[chuck hahn]

Got any numbers for me from that rotor..should be some on there.. Pm them to me and I will look thru the boxes to see what ( if ) i have one.

[rustybronco]

Cut the tire off the front rim using a hand saw, a hack saw and a die grinder needed for cutting the steel cords in the tire's beads. I needed to drive the front axle out with my copper u-joint hammer as it was stuck in the wheel bearings. Then I disposed of the rim in my scrap pile where it belonged!

Removed most of the rust on my old front rotors with a red scotchbrite pad. They came out exceptionally nice. That makes the spare set I had gotten to replace them with, relegated to the spares bin.

I'll blast and repaint the centers sometime this week and get some flat black SSU to mix with my direct gloss black. Momma gave me the go ahead to order some and have it sent to Her shop.

It looks like I'm back in the painting business again and I'll need to schedule the use of the blasting cabinet in the next day or two.

Before...


And after... (the lower two rotors)


By the way the rear rotor looks, (upper left) I'll need to find one in better shape to match the fronts.

[rustybronco]

Most of my left overs are rusty old junk headed for the scrap pile. I match them up with the new pieces then toss the old pieces.

PM me a list of your needs and I might be able point you in the right direction.