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Messages - DaveB

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General Discussion / Re: no cows or pigs pls
« on: May 12, 2009, 12:51:58 pm »
I recommend an air conditioned automobile with a carbon filter.  That should meet your olfactory requirements reasonably well.

General Discussion / Re: Furthest Distance
« on: May 12, 2009, 12:50:30 pm »
The island features fabulous views of downtown areas....of Detroit .......
I've seen downtown Detroit and the word "fabulous" NEVER occured to me. :)

General Discussion / Re: older riders
« on: May 12, 2009, 12:47:16 pm »
I'm 66 and also ride nearly every day, ice and snow permitting.  I've riden over 70 centuries (the last two were this past weekend on TOSRV).  I've also taken a bunch of week long suported tours and a couple of week long credit card tours. 

Age does have it's effects and there is no getting around it but you can slow the deterioration dramatically by keeping fit and riding as much as time permits.  I'm certainly not as fast as I was 20 years ago, and I wasn't that fast then, but I still can ride with and pass many, many riders significantly younger.

Keep riding.


Gear Talk / Re: Good Rear derailer for touring
« on: May 03, 2009, 02:40:45 pm »
People toured for decades on only a double front and a five cog rear cassette.
That's right and they also toured on a single fixed gear or even on a high wheeler because that's all that was available. We don't have to.  There has been progress in equipment and it's foolish not to take advantage of it. 

A ten-speed cassette requires a ten-speed deraileur,......

That's wrong.  A 9-speed rear derailleur works fine on a 10-speed cassette.  The "speeds" are in the shifter, not the rear derailleur.  You are correct that a 10-speed drivetrain does require a 10-speed shifter, cassette and chain.

One problem the OP will have is that Shimano and SRAM don't make 10-speed MTB range cassettes, only 9-speed so if he wants to go to a Xx32 or Xx34 cassette he will need a 9-speed.  IRD does make 10-speed MTB range cassettes but I've heard mixed reports about their quality. One "cure" for having 10-speed brifters and wanting to use 9-speed everything else is Jtek's "Shiftmate".  These things are relatively cheap (~$35) and work wonderfully well.

And know that in many cases, switching to 10-speed transmissions gains nothing on the extremes, you've just divided the intervening options into finer slices. If you add a huge cog and a tiny chainwheel, you must swap out the mechs to accommodate the huge swings. The lang cage rear mech has the ability to suck up all that extra chain when you drop into the lowest granny or ratchet up to the tallest gear.
True, road 10-speed cassettes tend to provide more intermediate cogs instead of a wider range. 

A long cage MTB rear derailleur is required on wide range cassettes for two reasons:

1. To provide the chain wrap needed to accomodate the wide range of cog and chainring sizes.
2.  To clear the large cog on a MTB cassette.  Shimano road derailleurs are rated to clear a 27T maximum cog.  They will usually accept up to a 30T but a 32 is very iffy and a 34 almost never works.  An MTB rd is made to work with these wide range cassettes.

Great, but I doubt there is enough clearance to put it at the hub.  You probably have to for 1/3rd of the way out from the hub to get enough clearance. 
Depends on the magnet you use.  If you use one of the screw-backed "button" type that sticks out of the spoke a bit, yes you have to mount it a few inches up from the hub.  If you use one of the thin plastic "clam-shell" designs, you could mount it quite close to the hub.  

Really, there is no reason to crowd the hub and 1/3 to 1/2 way out is as good a location as any.

Gear Talk / Re: Inexpensive Touring Gear
« on: May 01, 2009, 10:41:37 am »
If you could guarantee trees on your route, you should consider a camping hammock instead of a tent.
I've always wondered how functional these things really are.  You not only need trees, you need two trees the right distance apart, strong enough and with no obstructions between them. The ads always show an ideal set-up but how realistic are they?

Gear Talk / Re: Computer Install Question on LHT - Placement on Spoke
« on: April 30, 2009, 09:34:09 pm »
The shape of the pick up sensor usually dictates where on the fork it must be mounted.  I position the magnet to work with the sensor.
The recent Cateye cyclometers I'm familiar with have pickup mounts that are useable anywhere along the length of the fork blade. 

General Discussion / Re: Safety issues for solo biking
« on: April 30, 2009, 09:31:20 pm »
Not me.  It never has occurred to me that a cell phone was an essential safety item.  That may be because I grew up years before they existed. 
Actually my kids grew up before there were cell phones! 

However, I've heard they can be a useful deterrent if you are being hassled by a driver or someone at a restaurant or where ever.  Get out the cell phone and, even if there is no signal, go ahead and dial it. The offender will think you are calling the cops or for help and is more likely to leave you alone.    You can even pretend to be talking to the cops if necessary. 

If there is a signal, really do call 911 if you think you are in any real danger.

Gear Talk / Re: Computer Install Question on LHT - Placement on Spoke
« on: April 28, 2009, 07:20:04 pm »
The only possible problem is if the magnet and pick-up are mounted very close to the rim.  The linear speed of the magnet past the pick-up can be high enough that the pick-up doesn't catch the signal at high bike speeds.  Some computers are sensitive to this and others aren't.  I usally mount the magnet and pick-up about 1/3 of the way out from the hub or about where the third spoke cross occurs on 32H, 3X wheels.

As the others have noted, the theoretical accuracy is the same no matter how far out the magnet is located.  One pulse per revolution is the same for all points on the spoke.   

General Discussion / Re: Violent Crime Alert Atlantic Coast Route
« on: April 28, 2009, 07:10:49 pm »
I believe the original article firet appeared in Forbes magazine. 

Anyway, don't read too much into the numbers.  A very large part of the violent crimes in any city are drug related, either turf wars between competing drug gangs or drug deals gone bad.  The more drugs a city has, the more violent crime it has and the crime mostly (not exclusively of course) effects those related in one way or another to the drugs.

General Discussion / Re: RI TO Key West tour
« on: April 18, 2009, 09:29:29 pm »
I would think RI would be a good choice. :)

Gear Talk / Re: Inexpensive Touring Gear
« on: April 18, 2009, 09:28:49 pm »
There is one principle to keep in mind with almost any bicycle touring or camping gear:

Light, Cheap, Good

Pick any two.

Gear Talk / Re: Inexpensive Touring Gear
« on: April 15, 2009, 10:01:02 pm »
Also check out Campmor (  They have a wide range of camping, backpacking and bicycle camping gear at very good prices. 

Particularly check their "Super Special Deals" area where name brand gear, but in last years colors, etc, are available at extremely attractive prices.  About two years ago I got a North Face 20 degree rated synthetic sleeping bag that weighs about 3 pounds for $70.from them.   

As noted Eureka and Coleman have low cost but serviceable tents suitable for bike camping use.   Second the recommendation for a good sleeping pad.  Thermarest is the best known name but they tend to be pricey.  Campmor has a house brand version that is slightly heavier but very serviceable and a lot less expensive. 

General Discussion / Re: Carrying Pepper Spray
« on: April 14, 2009, 08:25:53 pm »
Colt does not list the mass of their products on their Website so I'll guess a WWI replica 45 is about 6 pounds?
The standard full size steel frame 1911 weighs about 37 oz and an alloy frame shortened version gets the weight down to about 25 oz. 

BTW, Colt is pretty much out of the civilian firearms business but there are dozens of makers of the basic 1911 and variouss improved upgraded models.

General Discussion / Re: Best Camera for touring?
« on: March 25, 2009, 12:45:28 pm »
The 8 megapixels is adequate, and the newer models go up to 12.
How fast we get spoiled.  It wasn't very long ago that professional level DSLR's didn't have 8 megapixels. I recall seeing a digital back for Hassleblad's that had 11 megapixels, was limited to an ISO of 50 and cost like a new car.  Now point-and-shoots have more. 

Unless you are making photo billboards, the huge megapixel count is irrelevant. 

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