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Conference noted::bicycle

Title: Bicycling
Notice:Bicycling for Fun
Moderator:JAMIN::WASSER
Created:Mon Apr 14 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3214
Total number of notes:31946

26.0. "Wheel upgrade" by VAX4::BRALEY () Wed Feb 19 1986 12:05

	I have a Raleigh Super Course, one of the last of the English
Carltons. I've thought about building (or buying) a set of wheels. The
bike presently has Mallard hubs, double butted spokes and Weinmann concave
700 mm alloy clincher rims. It also has a super six freewheel.

	I'm considering a set of Mavick G40 tempered alloy clincher wheels,
Sun Tour Superbe hubs and double butted spokes.

	I don't want the hassle of tubulars, but I'd like a nice light rim
and a good set of hubs. Any comments or recommendations would be helpfull.

	Thanks,
		Ed.
T.RTitleUserPersonal
Name
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26.1NEPTUN::DEHAHNWed Feb 19 1986 13:3546
	Interesting. I built almost the same set of wheels for a good friend
of mine with an older Super Course.

	If you really want sealed hubs, the Suntour Superbe is the lightest
set available, lighter than Phil Wood. They also use "standard" spoke lengths,
which might be a plus if you need one in an emergency. Unfortunately, they're
more expensive than Campy.

	The Mavic rims are the best, period. The G-40's are great rims, light,
hold the tire well, and are very, very strong. They are not tempered alloy,
though. Let me clear up a common misconception.

              THERE IS NO SUCH THING AS A HEAT TREATED RIM.
              
	Heat treating, in the standard metallurgical sense, is not feasible
with manufacturing bicycle rims. The high heat needed to harden the metal
warps the rim at the seam and  weakens it. What manufacturers do is anodize
the rim. There are two kinds of anodization, soft and hard. The cheaper rims
are soft anodized, mainly for appearance. Those brightly colored Super Champion
rims are soft anodized. The real competition rims are hard anodized, which
is sometimes called Sanfordizing. The process surface hardens the rim during
the anodization, giving it extra strength and rigidity.

	The Mavic G-40's are hard anodized. I've built several sets for tour-
ists and they've held up very well. Not to say that they're a touring rim
like the Weinmann concave. The G-40's are a 13mm rim, very narrow, and are
almost 100 grams lighter than the Weinmann's. They will take up to a 28mm
tire (like a 1 1/8th inch) but not the standard 32mm that most tourists use.
This means a harsher but significantly faster ride.

	If you want to save some money, forget the double butted spokes.
Use high quality (read DT) straight gauge spokes instead. 15G straights are
lighter than 14/15/14 DB spokes and are a little bit heavier than 15/16/15
which should only be used for racing anyway. You can save at least 10 cents
a spoke by using 15G straights. But, only use the best spokes.

	Personally, I find tubulars a lot less hassle than clinchers, and
therefore use them exclusively. But that's just me.

Best of luck,

CdH


	
26.2FRIDAY::WOESTEHOFFWed Feb 19 1986 13:3726
I too have an old Raleigh Super Course. It was the first bike that I ever
owned. Probably put about 15,000 miles on it and still enjoy it but only
use it for touring and bad weather.

You forgot to say exactly what you want to use the wheels for. Let's assume 
that these are just fast training wheels that you may race with. The hubs
and the rims that you described are good quality and I'm sure that you'll
be happy with them. There are a couple of other things to consider. One
is how many spokes do you need. If you are a light rider (under 150) then
32 spokes are plenty. A heavier rider would want 36. Fewer spokes are better 
for aerodynamics as spokes give a surprising amount of wind resisdence. 
Another thing to consider is what tire you will use. I would highly recommend 
the Specialized Turbo S or the Turbo R. These tires are probably the fastest
clincher tires however they do not work well with all rims. I am not sure 
if the G40 is one that they will work well with. You can find out by checking 
the paper that is included in the Turbo S or Turbo R box. It tells which 
rims work well with those tires.

I do time trials and triathalons and have used wheels with Arraya 20-A rims
and Turbo S tires. I swear they work as well as my extra light Fiamme
Ergal rims with $40 Clement Criterium Seta sewup tires. The sewups do 
accelerate better but that does not mean much in a time trial.

                       Hope this helps,
                                  
                                Keith 
26.3NEPTUN::DEHAHNWed Feb 19 1986 16:0718
	The G-40's work great with the Turbo S tires, we've used them at
140 lbs. pressure with no problems. The G-40's are a hooked rim which hold
these narrow bead tires well.

	The G-40's are very hard to get in 32 hole, but you can get them.
If you're that concerned with speed you should consider a lighter racing
bike and sewups. The 36 hole will be a lot stronger for everyday use. I use
36 hole Mavic GP4 tubular rims for training and various other Mavic 32 and
28 hole rims for racing.

	The Araya's are nice, and light too, but are softer alloy than the
Mavic's and don't seem to hold up as well. Maybe you've had good luck with
them, I haven't.

CdH


26.4MENTOR::REGWed Feb 19 1986 17:0010
	I second what Chris said.
When you decide on what you want I'll save you ~ $40 if you want by
knitting them up for you, if you are fairly local
(Maynard/Marlborough).  This may sound like a weird offer, but I
really do find it relaxing and a much nicer way to spend the evening
than watching the idiot box.  Yep, free and worth every penny - I'll 
even true 'em up again after you've ridden them a hundred or so miles. 
Send me mail on MENTOR if you want me to do this.

	Reg  (Who's_other_hobbies_include_macrame)
26.5NEPTUN::DEHAHNThu Feb 20 1986 07:248

	Geez, Reg.... I couldn't possibly beat that offer....


CdH


26.6USMRW2::DRIVETTSFri Feb 21 1986 08:356
If you were interested in tubulars I have a pair.  They are built with 
GL-330.  They look just like the 
GP-4 just that the GP-4 weigh 400grms and the GL-330 weigh 330grms hard
anodized, 36 hole, front wheel laced with 15g DT SS spokes, rear is laced
with 14g DT SS spokes on the Freewheel side of the hub and 15g DT SS spokes
on the other side of the Suntour Hubs.
26.7Mint Bridgstone MB-1 frameset + stuffVLNVAX::OPR_BROGDENTue Aug 17 1993 19:3526
Tim Brogden
MRO1 DTN:273-6111 but don't use!
VLNVAX::OPR_BROGDEN
Home: 508-835-6807, not connected yet!


				FOR SALE

One Bridgestone MB-1 frame set/w Unicrown fork, 1992 series.
Pearl Tusk color..(metalic white)
49cm measured center to top which equals 19 inches exactly.
Excellent condition, absolutely no rust, been very well cared for!!
Can be seen in West Boylston, Ma.
This frame, built up weighs 24.7 pounds with the unicrown fork.
Tube set is Ritchey Prestige Logic tubes through out and it is a lugged frame.
The frame set will also come with the headset(bearings and cups/caps) and 
more then likely the bottom bracket(bearings and cups/caps) and a Ritchey
seat post as well as an Avocet sadle as well.


The reason for selling....I rode a FAT and that is all there is too it!!
Price: $450.00 or best offer and I'm getting rid of this no later then the
second week in September! Also no tire kickers please. If you aren't really
knowledgable about mountain bikes that is fine, I'll answer any questions but
would like to keep from wasting my time as well!