Showing posts with label repair. Show all posts
Showing posts with label repair. Show all posts

Wednesday, November 16, 2016

"Paying for his Fun" - Bike Repairs

Pays for Fun
Title: Paying for his fun

Summary-Man working on bicycle wheel.
Created / Published- [between 1890 and 1899]
Subject Headings
- Bicycles & tricycles--1890-1900
- Wheels--1890-1900
- Cleaning--1890-1900
Format Headings-Photographic prints--1890-1900.
Notes-Copyright by F.T. Harmon.
Medium-1 photographic print.
Call Number/Physical Repository-Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA
www.loc.gov/item/97511391/

It is a somewhat amusing notion reflected in this photograph from the 1890s that the bicycle rider "pays" for his fun - riding the bike - by spending time fixing the bike. Of course in the 1890s bikes were manufactured with lower tolerances and for a given amount of riding I would assume more repairs were required than for a good quality bike made today.

Still, for the most part I find working on my bikes to be relaxing, although I mostly do fairly basic stuff. I don't do anything with bottom brackets, headsets, or truing wheels. (I guess some people might say that doesn't leave much . . . )

Recently I had a little crash - I managed to end up with both the front and rear wheels out of true on the bike I was riding. I noticed the problem with the rear wheel immediately and got it fixed but it took me a while to realize the front wheel was a bit off - then I had it fixed also.

For me, paying someone to do certain repairs is better than the aggravation/frustration of trying to do it myself without having the right tools or much experience. I'm quite lucky since there is a shop about a mile away, Spokes Etc, where there is a dedicated wheel builder and "wheel mechanic", Bill Mould, who for 20 dollars will correct any true a wheel, putting in in one plane but also making sure it is still round.



Saturday, August 9, 2014

Bicycling Essential Road Bike Maintenance Handbook

Bicycling Essential Road Bike Maintenance HandbookBicycling Essential Road Bike Maintenance Handbook by Brian Fiske

My rating: 1 of 5 stars


So this is mostly a rant and not a review, I suppose - and not really justified (much) since I didn't waste my own money on buying it but looked over a copy from the public library (that however used my tax dollars to buy it . . . )

As noted in the Goodreads summary, this is an abbreviated version of a much longer reference book on road bike maintenance - this is supposed to be a version you can take with you.

Really?? (As they say ~) Is there someone who does that, carrying a how-to-repair-my-bike-book with them? I am doubtful. I think this is more an attempt to repurpose content already created for one container that Rodale sells into another one that costs little to create.

If you are going to spend money on a how-to-repair-a-bike book, you might as well get a good one - for me that would be the Park Tool Big Blue Book of Bicycle Repair. It provides enough detail to avoid getting into too much trouble and one might even get some useful things done correctly.

Perhaps part of the problem is that I take a bike with a title like this to include "the essentials" but it is somewhat amazing how much obscure stuff is in this tiny book. 15 pages (of 166) on Shimano Di2 and Campagnolo EPS V2! When your book includes this much information on these, your audience is clearly people who don't know when to stop spending money.

And there are just random oddities - the photographs and line drawings are downsized versions, but for a how-to book, they then lose their usefulness in many cases. Dang.

Perhaps the most useful part of the book are the "seven rules of bike repair" on a page at the beginning of the book. The first rule is, "think safety first" that includes the advice to wear rubber gloves (to protect against solvents, as far as safety is concerned) but in all the (little) photographs, the hands are bare. "Do as I say, not as I do." Fantastic.


View my cycling book reviews on Goodreads.

Thursday, December 26, 2013

Presta Valve Follies

A few days ago while putting air in a road bike tire before taking off to work, I managed to remove the pump head such that it snapped the front tire's Presta valve stem off. This is the second or third time I have had this happen - admittedly over something like 15 years, so not exactly an everyday thing. Still, it is annoying since I typically put air in the tires right before taking off. In this case, since the broken valve didn't let any air out but simply meant I could no longer put air in, I decided to ride to work and back before dealing with it - that is, replacing the tube with a new one with a working valve. So I wasn't slowed down on departure much.


The Presta valve - the part that should insert into the pump and open the tube to receive air snapped off

This situation was preceded by bending the stem at some point, which apparently creates a weak point. Then I suppose when I loosen and tighten the lock nut every time I put air in the tire, it puts some stress on the bend, or something like that. Then at some point as I pull the pump head off, it is at such an angle that the stem snaps.


Inner tubes with working Presta valves

The replacement tube I will use is at left - I an using the tube that was in my bicycle tool bag, which was in a bag with talcum powder so it will move around easily in the tire and not get trapped between the rim and the tire during installation. I will coat the newer tube at right in talcum and put it in the bike tool bag.


Schrader valve patent from 1892

Apparently the Presta valve is more suitable for high pressure situations than the older Schrader valve - or at least I think the Schrader valve design is older. In Google's patent database the Schrader valve carries the Schrader name from its being patented in the U.S. in 1892. The Presta valve is a little more mysterious.


Is this the earliest Presta valve-like patent? from 1897

According the Wikipedia article on Presta valves some Presta valves now have removable cores which is not something I had realized was even possible. It says, "removable core Presta valves have become more common" - perhaps, but not on the low cost (i.e., cheap) tubes I buy. (Schrader valves all have removable core valves - a slow leak with a tire with a Schrader valve can simply be that the valve is not tightly installed. A very useful thing is a Schrader valve cap made of metal that has a built-in valve core remover/tightener.)