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Uncle Al's
Rants
HE HAS A
WRENCHING ATTITUDE!
For 15 months,
Alan "Uncle Al" Ardizone educated and entertained RBR
newsletter subscribers with his technical knowledge and off-the wall
humor.
More than 180
of his rants and answers to roadie questions are now archived on RBR's
premium site.
We're presenting a dozen others here to give you his take on these
widespread technical concerns.
Incidentally, the valuable reader feedback below was posted prior to
the installation of our do-it-yourself
Roadie Rap forum. Now,
premium site
members can communicate directly with each other and
RBR staff members on
any issue.
In early 2006, Uncle Al
returned as a regular contributor to the RBR newsletter,
not to answer questions this time but to write a column about the many
mechanical issues involved with road
bikes. Each week he weighs in on a different topic.
Alan Ardizone is a
bike rider, family man and owner/operator of Cascade Bicycles in Montrose, Colorado.
Read more in his own words.
Be sure to check snappy suggestions on a bunch of equipment and techniques issues at
Quick Tips.
The
Case for Lower Tire Pressure
DEAR UNCLE AL: Perhaps you can settle an
argument at our bike club. I like riding 20-mm-wide tires inflated to 120-130
pounds. I feel faster because of what I think is lower rolling resistance.
Others argue for a 23C width at 100-110 psi, saying these tires are more efficient
because they absorb pavement irregularities better. I weigh 175 pounds and ride at
an average of 18+ mph on a variety of road surfaces. So who's right about
width and pressure? -- Greg C.
UNCLE AL FIRES BACK: Soften up, Greg!
Most everyone I know runs too much pressure.
Welcome to the club. Over many years of testing and talking to guys who live
on their bikes, I'm convinced there is little reason to run more than 95-100
psi -- and there are compelling reasons to run 85-90 psi.
High pressure, say 100-120 psi, guarantees
short tire life, poor cornering and lots of punctures.
A rock-solid tire cuts/punctures more easily than it would at a lower
pressure. Also, a softer tire can "smear" -- conform better to objects
encountered on the road. Why make the ride even rougher on America's
ever-crumbling road surfaces?
Admittedly, I weigh 210 pounds and ride on
really poor road surfaces. These things influence my opinions. I run 85-90 psi
front and 90-95 psi rear on 700x23C clincher tires. I do not have flats!
Plus, bumps are less of an issue, and my bike corners as if on rails on
high-speed descents. I get 1,000-1,500 miles out of a rear tire. When I ran
much higher pressure many years ago, I got no more than 500 miles.
So, my advice is never to run smaller than
23C. Use good tubes, air them up before every ride and spend extra for premium
tires -- they'll pay you back in extra mileage and better handling.
One more thing: Don't buy a race-specific tire to train
on. If it's advertised to last only 500 miles, they aren't lying. Shaving
grams off of training tires is silly and wasteful, and you won't get the
low-weight advantage when event time comes if you ride the light stuff all the
time. Make gram shaving your secret weapon, if only in your mind, when it
counts.
Do as I recommend and I promise fewer
flats, happier miles and no noticeable increase in rolling resistance (the
great myth). Plus, you'll waste fewer resources, both financial and natural.
FEEDBACK FROM ARNIE L.: As a roadie of 20+ years,
but a new reader of RoadBikeRider, I was intrigued (and skeptical) of
your advice to lower tire pressure. I have been riding at 125 psi or more,
concerned about rolling resistance (although the extra 10 pounds around my
waist probably matters a whole lot more to my performance).
Well, I thought I'd try it. I lowered my
pressure to 105 psi. What a great difference! I haven't really noticed any
change in performance, but what a difference in the ride! One of my usual
rides over badly cracked roads (usual Pennsylvania stuff) was sooo much
more comfortable. It seemed like the road had been repaved. Thanks for the
advice.
FEEDBACK FROM MICHAEL A.:
Recently, a friend told
me about your promotion of lower tire pressure. GREAT!
In the early 1960s, I rode the kermesses
around Antwerp for a team sponsored by "Cycles OK." We always rode tubulars at
about 90 psi with great results -- fewer flats and better handling, especially
in the rain (a frequent occurrence in Flanders).
I've tried to promote lower pressure as a coach
with the New York Cycle Club, with little success. My fellow club members see
my gray hair and my inability to keep up with the hormonally besot, and reject
my advice. It's great that you're putting out this sound advice.
FEEDBACK FROM SAL A.:
I've been riding for years with high
pressures in my 23C tires (120-130 psi rear, 100-110 psi front). I figured
since I weigh around 215 pounds I need this.
I was pleasantly
surprised to find out how much better my bike rides after lowering the
pressures as Uncle Al recommends.
I rode over some
freshly "chipped" roads on my latest ride. This is where the road is
covered with hot tar and then pea stone is spread on top. It makes for
pretty anxious riding, especially down hills. I was really happy with
the improvement in handling.
Also, on smooth
asphalt the tires now “sing” lightly. They never did that before! I like
the sound and it seems to confirm that I'm riding with the right tire
pressure.
I love when I learn
something new about bicycling, especially when it's simple and
effective. My helmet's off to Uncle Al.
[Back to top]
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Al's Fast & Easy Bike Cleaning
DEAR UNCLE AL: I hear you loud and clear about
keeping bikes clean, but I'd really rather ride my bike during my spare time,
not clean it. For those of us who hate all cleaning, bike or house, what is
the fastest way to clean the bike or drivetrain to keep it in good
(acceptable) condition? -- Mark G.
UNCLE AL FIRES BACK: After every ride, take a can of Pledge furniture
polish and spray it on your frame, avoiding the rims and brake pads. Wipe it
down good.
Or, if you've ridden in the wet, mist the bike
with a hose, spray on Simple Green Bike
Cleaner/Degreaser foam, let it sit a few,
spray it off, then dry with a soft clean cloth.
The Pledge approach takes about 5 minutes. The
Simple Green approach takes longer, but you can shower while the foam works
its magic.
The secret to chain cleaning is to use a dry
lube, let it really dry and don't over lube, which nearly everyone does. I
lube my chain when a link starts to chirp, never before.
Put one drop of lube on each roller. Don't
drown the chain, and don't wipe it down with a rag. You'll just force
the surface dirt into the rollers, which are the working surface of the chain.
If you make this a ritual, your bike will never
get really dirty (rainy rides excepted), so cleaning will be so quick that it
won't cut into riding time.
[Back to top]
Noisy Ultegra
Levers
HEY UNC:
I have 1998 Shimano Ultegra STI
brake/shift levers. They work fine, but the incessant rattling of the plastic
caps drives me crazy. Is there anything I can do to end this madness? -- Carl
J.
UNCLE AL FIRES BACK:
Annoying, isn't it?
First, you need to be sure you haven't lost the tiny screws that go in the
backside of the small secondary levers. If you're not certain, go to your local
shop. They know which ones I'm talking about. If the screws are missing,
Shimano can supply replacements.
If the screws aren't missing, you have two
choices: Replace the levers with new ones, which have glorified rubber bands
to stop the rattling. That's a pricey remedy, or course. Or, you can do as I do
and gently rest your fingers on the small secondary levers, which rattle
against the primary levers. That's the source of the noise.
Any of you Nieces or Nephews got another remedy?
TIP FROM ERIK N.:
The new generation of
Ultegra solves the rattling lever by adding a glorified rubber band-like
cushion on the small inner lever. So I imitated that cushion on my '98 levers
by wrapping a thin layer of foamy double-sided poster tape around the small
lever at precisely the point where the two blades touch. I then covered the
sticky bumper with a piece of black plastic electrician's tape. This mutes the
rattling but doesn't interfere with the function of the lever. This makeshift
bumper actually looks the same as Shimano's.
TIP FROM MICHAEL M.:
Before my '99 Ultegra levers quit working altogether, I muted the rattling with a rubber band made
from a strip of old inner tube. I wrapped it a couple of times around the
small lever, then slid it up to where it would cushion the vibration against
the large lever. It wasn't perfect but it helped a lot.
TIP FROM DEVON S.:
Go to the plumbing
section of a hardware store and get O rings that will stretch over the end of
the small lever. Adjust it along the lever until the rattling stops. If
necessary, use two.
TIP FROM JIM R.: I put my daughter's
orthodontic bands around the two levers to reduce the rattling of the small
one.
TIP FROM DOUG H.: Sometime it's the two
levers vibrating against each other, but often the rattling comes from the
plastic caps. An easy solution is to pop them off and go commando! They have
no function anyway, except to serve as miniature billboards for Shimano -- and
to drive you crazy with the rattling.
TIP FROM CHRIS L.: Those caps are
snapped on at the factory and apparently can't be removed without breaking.
After listening to their noise, I didn't care. I pried them off, which broke a
little piece, then glued them back in place with epoxy. No rattling
ever since.
TIP FROM THOMAS G.: I put a drop or two of
Shoe Goo under the caps while they were still on the levers. The Goo dries to
a durable state that's not quite permanent, so you could still get the caps
off if you need to. No rattles for several months of heavy use!
TIP FROM BILL R.: My solution was
replacement caps from Shimano that snapped into place after popping off the
old ones. These stopped the rattling for a couple of years but now it's
returned. I just ride with my palms over the hoods to preserve my sanity.
[Back to top]
Installing Tight Tires
DEAR UNCLE AL: I’m
having a tough time mounting tires on my Mavic MA-40 rims.
I was running Specialized
Turbo Armadillo tires, which were difficult to get on and off. In an effort find an
easier tire, I tried a folding Michelin. It was impossible to mount. I did get
some Vittorias on with the old soapy water trick, but that isn't something I
would usually be able to do on the road.
My local shop guy blames
the rims. Another shop says it’s the tires. So what's the story? -- Glenn K.
UNCLE AL FIRES BACK: It's possible that your MA-40s are the problem, but not likely. I see much
more variation in tire bead seat diameters than rims, although the industry
standard accepts about a 4-mm discrepancy in rim circumference. (The bead is
the open edge of the tire on both
sides.)
Mavic rims are generally
spot on, and the tires you've chosen are built with accuracy.
However, I’ve seen cases
where a rim was on the big side of the 4-mm variable and the tire was on the
small side. You’d play hell mounting the tire without shredding the tube.
Trek used to make a
Matrix
rim that seemed a little big. Continental, with their exacting standards, made
some clincher tires that seemed small. If you tried to mix these two, visions
of crowbars would dance in your head. (Maybe for use on the manufacturers’
heads?)
But in most cases, tires
that won’t mount can be blamed on operator error. Follow these basic rules to
accomplish the task and ease your mind:
1. Always use
talc.
Rema
makes a version specifically for bike tires, although any talcum powder or
corn starch will do. Talc allows the tube to move freely inside the tire so it
doesn't interfere with the tire/rim interface. Most tube pinching is caused by
the tube getting wedged between the rim, the tire and your tire levers.
Generous use of talc reduces the risk.
2. Put a little air in
your tube to give it some shape, then push the valve stem through the rim and
feed the tube inside the tire. (I’m assuming one side of the tire is already
on the rim. Don’t try to put the whole shebang on at once, a common mistake.)
3. Start seating the tire.
Begin at the valve. Don’t pull the valve tight to the rim yet, or the bead
will not seat there and will blow off during inflation.
4. Work away from the
valve with both hands in opposite directions. Use your thumbs to push the bead
up and onto the rim.
5. Say what? It won’t go
on? That last little bit is the toughest. Let all the air out and keeping
thumbing. Pinch the tire all the way around so both beads go into the rim’s
deep center, and thumb some more.
6. Still won’t go? Hold
the bead in place with one hand and use your tire lever, a little at a
time, to pry the bead the rest of the way. I can almost always get it on with
my thumbs, but they’re very strong from choking people with mailorder catalogs
and price questions.
7. Finish by pushing the
valve stem up into the tire, then pull it down again. Go around the wheel,
flexing the tire from side to side to be sure the tube is not trapped under
the bead. Add some air, check again for tube entrapment (illegal in 48 states)
and inflate fully. This whole process should take about five minutes, max.
Talc is the secret! My
spare tubes sit in their own plastic bags full of talc in my repair kit. I
look like I've abused a banned substance when I'm done fixing a flat, but I'm
back on the road in no time and my riding buddies are amazed at how quickly
I've done it.
DEAR UNCLE AL: Due to
carpal tunnel syndrome, I have reduced strength and sensation in my hands. It
impairs my ability to remount the tire bead after I have fixed a flat. This has
caused some long, lonely, frustrating battles with my Michelin Pros, especially
compared to wire-bead Continental Gatorskins. It also seems that tires with a
wider cross-section, like 25-28C, are less hassle. Have you any tire/rim
suggestions to get the easiest re-mounts? -- Mark R.
UNCLE AL FIRES BACK:
Marco, I'm going to assume you are always using tire levers to mount or remove
your tires. They'll save you a lot of grief, especially if you have diminished
hand strength. Use the long-handled Quik-Stik, or try the Crank Brothers Speed
Lever.
I also suggest sticking with
wire-bead tires rather than Kevlar. They're generally easier to mount, as you
have discovered. Larger-section tires are easier to mount, too.
A 700x25C Continental Gatorskin
on a Mavic Open Pro rim should be a good combo for weight, reliability and ease
of mounting. Avoid Campy rims and Conti tires as a combo, unless you have a
crowbar handy. Don't use Tufo tires, the hardest to mount we've ever
tried.
Back to top
Go to p. 2
Go to p.3
Want more of Uncle Al? We have 180 of
his answers archived on the Premium
Site.
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