home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!ogicse!henson!news.u.washington.edu!serval!wsuaix.csc.wsu.edu!bill
- From: johnsw@wsuvm1.csc.wsu.edu (William E. Johns)
- Newsgroups: rec.motorcycles
- Subject: Thoughs on squishing bananas
- Message-ID: <1993Jan24.205023.4538@serval.net.wsu.edu>
- Date: 24 Jan 93 20:50:23 GMT
- Article-I.D.: serval.1993Jan24.205023.4538
- Sender: Bill Johns
- Organization: Washington State University
- Lines: 85
- Originator: bill@wsuaix.csc.wsu.edu
-
- I did not save the post, but not too long ago someone said that if you
- can lock the front brakes with a single disk you have all the brakes
- your ride needs. The implication was that dual disks were a
- waste if you could lock the front wheel with a single disk.
- adequate.
-
- I disagree.
-
- I have been able to lock my front brake (FJ1200) at 15 mph, and have
- done stoppies coming down from 100 mph. Simply being able to lock the
- front break only implies that the rider is not in touch with the bike's
- braking capability. To me a front brake will lock and skid because the
- rider has failed to properly load the front tire with the weight of the
- bike. The quick "grab" of the front brakes can apply a very fast
- deceleration to the front tire rotation. If there is not enough
- resistance of tire to pavement, the wheel locks. By have more weight on
- the front tire, the tire is less likely slide over pavement.
-
- Optimum use of front brakes was best described to me by friend, riding
- buddy, go-faster, and Denizen-without-number-or-terminal Scott Larson. He
- describes optimum braking as being similar to a child playing with a
- ripe banana. The kid will put that ripe banana in a hand and squeeze,
- delighting in the sensation of feeling the squishy stuff ooze out between
- fingers. The more the banana squishes the harder the kid squeezes. The
- process is not one of seeing how fast you can squish the banana, but how
- thoroughly you can squish the banana, getting all the sensory delights
- possible. (As kids grow up, it is no longer fashionable to squish
- bananas, so they take up raising roses and play in the dirt. :-) )
-
- Before I went out for my Suzuki racing school last year, a racing
- friend, Stefan I-F suggested I go out on some back road and learn how to
- do stoppies from 140. I countered with a "Hell, if I could do stoppies
- from 140, I don't know that I'd bother with the racing school." I was
- primarily out for a (legal) speed fix. I took the advice to heart,
- however, and went out on a back road and ran the bike up to 100 and then
- started seeing how fast I could stop. For me, it seemed that optimum
- braking was realized by using the banana _squishing_ technique on both
- front and back brakes. As soon as I sensed a significant weight shift
- forward (nuts jammed into the tank) I'd get off the back brake and
- _squish_ down harder on the front. Yeah, it took about 6-8 tries but
- soon the back end was bouncing with longer and longer periods between
- touches. Being able to get the back end a bit up is a different kinda
- rush from an engine-limited acceleration, but a rush nevertheless.
-
- I've been told that I should not use the rear brake (Wes Cooley no less)
- because I was risking a rear tire skid. I've never noticed that happen
- and suspect that the wheel base and weight of the FJ keeps enough weight on
- the rear tire during that initial braking to minimize the rear tire
- lock. I suspect a lighter, shorter bike would be sliding around under
- similar treatment.
-
- I have also gone out on parking lots, just sorta fooling around to see
- how fast I could drop the bike's speed from, say, 15 or 20 and by
- grabbing the brakes locked the front tire so fast it made my heart skip
- a beat or two. I guess the urge is to squeeze hard to get a good grab
- before you lose all speed. Whatever the reason, I am more prone to lock
- a front tire at those speeds than at high speeds.
-
- I like the brakes on the FJ. I rather dislike the brakes on the PD. I
- suspect the fact that the FJ is dual disk and the PD is single disk has
- something to do with it. It takes a _lot_ of effort to get the same
- feel of >squish< and the feeling of the weight of the bike shifting
- forward on the PD. Of course the tires are different (MP7's on the FJ,
- and MT-60's, a dual-purpose, on the PD) and the PD is much lighter. The
- other factor is that I am not prone to go out and run the PD up to a 100
- and then try to do stoppies. I am absolutely sure that it will go 100,
- I've just never wanted to wait that long.
-
- Quick summary: Being able to lock the front brakes tells little
- about the braking capability of the bike. It tells more about the
- inability of the rider to use the brakes effectively.
-
- OK, who wants to argue.
-
- Ride Free,
-
- Bill
- ___________________________________________________________________
- johnsw@wsuvm1.csc.wsu.edu prez=BIMC KotV KotRR
- DoD #00314 AMA #580924 Squid Index 3.83 WMTC #0002 KotD #0001
- Yamabeemer fjgs1200pdr100 and a Volvo. What more could anyone ask?
-
- Who lives without folly is not so wise as he thinks.
-
- Duc de La Rochefoucauld
-