David Waters said:Hey folks, having been quoted 350 to have a set of hubs and rims laced
together
What with ? Chopper rear brake cables ?!
Quoted message said:I am thinking it may be prudent to build them myself.
It's not a bad idea. However it's _cheap_ to have wheels built. Given
the general faffing around involved, and the really rather reasonable
charges that I see locally, then I can't claim there's a great
economic reason for it.
Quoted message said:Would also be another skill to tick off!
Which is probably the reason why we do it.
Quoted message said:I have had a butchers at Sheldon Browns site to see what he has to say
and it all seems fairly straightforward.
It is. Read Jobst Brandt's book for the theory, but follow Sheldon's
instructions for the process, as he's a little clearer. If you're
prepared to accept good recommendations without understanding their
background, then Sheldon alone is fine.
Quoted message said:I am completely bemused as to how to calculate the spoke lengths though.
Many ways - and it is important.
One is just to go into a shop and buy them. If you're buying loose
spokes, then you're probably dealing with a shop that builds too.
They'll be able to find the lengths.
The way many shops do it is to use a look-up chart. For standard
crossings of Shimano hubs onto Mavic rims (or similar commonplace
parts) then it's easy.
For weird components though, you need to calculate it. This involves
measuring flange spacings, rim diameters etc., although these can
often be looked up too. There are web on-line calculators to do the
rest, but it's not rocket science. You also need to calculate rather
than looking-up if you want a half-radial lacing or suchlike.
Personally I read Jobst, then made up my own Excel spreadsheet to
calculate them. it's not hard (trivial Pythagorean geometry).
Quoted message said:Also what kit am I going to need?
Very little.
Spoke key. GET A SPOKEY !!!! They're much superior to any other
than I've used, included Parks, DTs, Campags et al. OK, so they look
like cheap rubbish, but they work.
Spoke driver. This is an old Pozidrive hex bit, ground down to be a
flat bit with a spike on the nose. Useful for quick assembly, and damn
near essential for building on deep box-section DH rims. You can
manage without though, and they're hard to buy.
Various rules, straight edges etc.
A stand. Useful for fast builds in a shop. The rest of us can manage
without. Many people lace on a table or their knee, then use an
inverted bike for final build.
My truing stand is home made, from a carved up scrap front fork and
some welded steel. All you really need is a fork or two (which can
still be atached to your bike) and a pencil held in a bulldog clip as
a truing indicator. I like to use my thumbnail anyway, because I'm
more accurate by touch than by sight.
You'll need a dish stick, but this can be home made too. Mine is a
slice of plywood with two "feet" on it, and a relieved space across
the centre to clear the hub and spokes. The indicator is another
little stip of ply, and a bulldog clip.
Quoted message said:What kind of spokes should I be going for?
Double butted DTs and brass nipples. They're easy to build with,
reliable, and almost as lightweight as "ultimate spokes".
Don't mess around with funny spokes or funny nipples. They save you
almost no weight / drag and they're a real [censored] to build. You can go
for black spokes if you want, but nothing more complicated - certainly
not on a first wheelset.
There's also the lacing pattern to consider - read Jobst for why.
Personally I'd say that all 36s are 3x, 32s are either 2x or 3x (2x
for under 32). Fronts under 32 can be radial, but only if you're a
drag-queen roadie - anyone else should stick with crossing them like
Leonardo intended. Rears with wide cassettes however (and that's
everything except fixed wheels these days) should be half-radial, as
it evens up the tensions a bit. IMHO, but I think it's a good idea.
Resurrected '50s vintage stuff should be snowflake or crowsfoot
patterns, and tied and soldered at the crossings - just because it
looks retro.
And when you've built your wheels, _stress_relieve_ them ! (Sheldon
tells all). This is the biggest difference between a good hand-built
wheel and a factory farmed tortilla.
My first-built wheel failed recently - after 7 years of being the back
end of my daily commuter and kerb jumping hack. The rubbish Mavic 217
rim (I'll never buy another Mavic) developed corrosion-induced
cracking around the spoke holes. Even with half the spokes pulled
proud of the rim surface though, it was still round and true. If you
follow those two guides, you _can_ build damn good wheels on your
first attempt.
--
Smert' spamionam