Website Update with Airhead Brakes

[MurphyPeoples]

Hello All!
I just updated the "Project R100S Website" with my first installment of

"The Braking Chronicals".

You can view it here:
http://www.projectbmwr100s.com/projectbmwr100s/September_15th_2007.html

The new pages are optimized for fasting downloading for our internet speed challenged.

Thanks for following along!
Murphy

[sumran]

Haven't seen you in a while. Now we know what you have been up to. It will be interesting to follow your progress.

One question: if you ar going from a 17mm piston to a 14mm piston, why would be boring it out? It seems like a variation of the old line "I cut it three times and it is still too short.":scratch

[bobh41]

I appreciate your zeal in examining the braking effectiveness of your bike.

(from your website);
As my front tire came even with the cone I laid on the front brakes HARD!

I must question the validity of that test on the basis that it is too subjective. How do you know if you reached the maximum stopping ability of the tires and brakes? Is it possible to lock up the front wheel with these brakes? (I've never tried that hard to lock up the front; it's a little scary). What about repeatability? Don't the brakes fade with successive use?

I like what you're doing but with a precision measurement background I enjoy being a stickler for detail.

[sumran]

Is it possible to lock up the front wheel with these brakes? (I've never tried that hard to lock up the front; it's a little scary). What about repeatability? Don't the brakes fade with successive use?

I am sure there will be a human factor in your data, but it should still show significant changes in performance. However, as bobh41 noted, hard application of front brake only can get a little dicey. Given your description, it is not much of a concern with your current system, but might become one as you make improvements.

Do be careful. We wouldn't want this to become the Murphy Peoples Memorial Brake Study!:doh

[MurphyPeoples]

It IS NOT possible to lock up the front brakes.
It took about 15 minutes between each stop to get off, measure, take notes, take pictures each time, get back on, turn around and do it again. I felt that this amount of time was more than enough to cool the system down. In fact my best stops were towards the end, so I believed that I was getting better and better at it. Thus I threw out the last two stops from the average.

I was going to get further into those details in the next post.
But.... you asked.:thumb
Murphy


I appreciate your zeal in examining the braking effectiveness of your bike.

(from your website);


I must question the validity of that test on the basis that it is too subjective. How do you know if you reached the maximum stopping ability of the tires and brakes? Is it possible to lock up the front wheel with these brakes? (I've never tried that hard to lock up the front; it's a little scary). What about repeatability? Don't the brakes fade with successive use?

I like what you're doing but with a precision measurement background I enjoy being a stickler for detail.

[MurphyPeoples]

Do be careful. We wouldn't want this to become the Murphy Peoples Memorial Brake Study!:doh


:laugh
Dude - you are too funny!
As I mentioned before, I can't lock them up. I'm hoping that next time they WILL lock up. But really, the whole reason I chose the airport was for safety. Tons of room, no traffic and so forth. I use to race bikes back in the early 1980's, so I'm not you're average rider.... (just below average!:thumb ).

But for your original quesiton... I'm going to Sleeve the cylinder. The 14mm piston won't fit into my 17mm hole... the piston is too small- the hole too big. Thus, I need to bore, sleeve, then drill out the oilways, and install the 14mm. Not really much to it.
Murph

[sumran]

But for your original quesiton... I'm going to Sleeve the cylinder. The 14mm piston won't fit into my 17mm hole... too small. Thus, I need to bore, sleeve, then drill out the oilways, and install the 14mm. Not really much to it.
Murph

Since it is you, I am sure we will get good photos and sources for the upgrade.