De-stinking Penelope

[DannyMotor]

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]

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.

[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 (??).

[DannyMotor]

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]

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.

[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.

[DannyMotor]

Seems to be the trend to go with the slotted where possible/applicable.

[Flyboy]

Wow, nice work on the rotors, making of a legend for sure.
Can't believe you chucked the rim out.

[rustybronco]

Can't believe you chucked the rim out.

Sorry Stan, what was I thinking? I picked it out of rubbish and put it with the rest of your things. Shall I save the rear rotor for you as well?

[chuck hahn]

Stan...as pitted as they are youll be a magician if you can save them...but thats just my opinion.

[Flyboy]

Hahahaha, Doc, that is not what I meant, I just thought from looking at the pics, it was not so bad that it was beyond use.

[rustybronco]

I've got a front rim I plan on using from Chuck. A spare that's a bit gouged up from another member and a spare for that spare. Again, as eroded as it is, you're still welcome to it!

[Nessism]

Seems to be the trend to go with the slotted where possible/applicable.

Not when you're going for a 100 point restoration like Dale is.

[rustybronco]

Razzing or not, there is a bit truth in your statement; It least it starting to look that way. Oh, what have I gone and done to myself...

Ed, you're next on the list... I NEED to post a picture of the rear rim I got from you.
It just needs a redo of the clear on the outer edge and it will be a thing of beauty. Thanks again, it's a very nice piece.

[rustybronco]

Just received the crankshaft Chuck sent in today's post. It survived the trip in perfect condition; even the package looked great!


No cams so far...