Lacing pattern changes and spoke head washers

[Keeper of the Mighty Macaulay]

I'm considering rebuilding a wheel with a different lacing pattern and
spokes so I'm wondering:

1. Just how significant is the increase in chance of flange failure if I
change the lacing?

2. Will the chance of failure be decreased by use of spokehead washers?

Here's what I'm thinking about switching:

Wheelsmith oval aero spokes (I think 1.2/2.2- the kind that doesn't need
slotting) to Wheelsmith 15/16 spokes

Heads-out radial to 2x lacing

Possibly brass to alloy nipples, though I don't see what difference it would
make

What I'm not switching (in case it matters):

Mavic Open Pro rim, Hope front road hub (28hole)

If this is a really bad idea, let me know. Or if you want to buy a
Hope/aero/Open Pro wheel (just not digging the radial look on the small
flange right now).

Thanks in advance,

Seng

 

[Qui si parla Campagnolo]

foodrock-<< 1. Just how significant is the increase in chance of flange failure
if I
change the lacing? >><BR><BR>

Hard to measure..the chances of the flange breaking are more if you change the
lacing..

<< 2. Will the chance of failure be decreased by use of spokehead washers?
>><BR><BR>

Nope-


Peter Chisholm
Vecchio's Bicicletteria
1833 Pearl St.
Boulder, CO, 80302
(303)440-3535
http://www.vecchios.com
"Ruote convenzionali costruite eccezionalmente bene"

 

[jim beam]

changing /from/ radial /to/ 2x is _not_ a problem. flange stresses are
much better oriented and substantially reduce probability of failure.

if you're using the right spokes, forget the washers.

but i gotta ask, what are you doing this for? there's folks out there
that pay premiums for radial aero spoked wheels. why not just sell them
and buy new ones built how you want them in the first place?
potentially profitable, and /substantially/ less brain damage.


Keeper of the Mighty Macaulay wrote:
> I'm considering rebuilding a wheel with a different lacing pattern and
> spokes so I'm wondering:
>
> 1. Just how significant is the increase in chance of flange failure if I
> change the lacing?
>
> 2. Will the chance of failure be decreased by use of spokehead washers?
>
> Here's what I'm thinking about switching:
>
> Wheelsmith oval aero spokes (I think 1.2/2.2- the kind that doesn't need
> slotting) to Wheelsmith 15/16 spokes
>
> Heads-out radial to 2x lacing
>
> Possibly brass to alloy nipples, though I don't see what difference it would
> make
>
> What I'm not switching (in case it matters):
>
> Mavic Open Pro rim, Hope front road hub (28hole)
>
> If this is a really bad idea, let me know. Or if you want to buy a
> Hope/aero/Open Pro wheel (just not digging the radial look on the small
> flange right now).
>
> Thanks in advance,
>
> Seng
>
>
>

 

[Keeper of the Mighty Macaulay]

on 4/24/04 9:44 AM, jim beam asserted:

> if you're using the right spokes, forget the washers.

Even with 1.8mm diameter spokes?

> but i gotta ask, what are you doing this for? there's folks out there
> that pay premiums for radial aero spoked wheels. why not just sell them
> and buy new ones built how you want them in the first place?
> potentially profitable, and /substantially/ less brain damage.

The aero spokes look to be the correct length to be used on another set of
wheels I want to build and I have spokes that should work for a 2x build
with the hub/rim combo in question.

I tend to take wheelbuilding dilemmas over selling headaches, but if there's
someone who might be interested in a aero bladed Hope (so I was told- no
labels) /Open Pro front wheel, they should make me an offer.

Thanks,

Seng

 

[jim beam]

Keeper of the Mighty Macaulay wrote:
> on 4/24/04 9:44 AM, jim beam asserted:
>
>
>>if you're using the right spokes, forget the washers.
>
>
> Even with 1.8mm diameter spokes?

spoke diameter makes no difference to whether a washer is needed. just
select a spoke whose length between the head and the elbow is
appropriate to the hub flange width.