doubling up single Torpedo wire wheels

On Tuesday, June 21, 2016 at 2:09:00 PM UTC-4, Ian Field wrote:
"AMuzi" wrote in message
...
On 6/20/2016 4:41 PM, Emanuel Berg wrote:
AMuzi writes:

The original Vitus design popped into a large
BB hole with a molded plastic peg on the
frame side. There were others after with
a locating peg (the gear wire(s) hold it
against the frame). Trek's first design had
two 3mm screws threaded into the BB shell,
like a mini belt-with-suspenders. Modern ones
thread a 5mm screw into the BB shell, no nut.

Perhaps you can make such a hole in the frame,
if there isn't one?


Easily. Drill a 4mm hole (theoretically 4.2mm but a hand drill dills
large) and tap it m5x0.8.

The tube section they make the BB out of is usually too thin walled to tap a
machine thread.

Once you've chewed up the hole trying to tap a thread into it, you end up
using a much bigger self tapping screw.

You might get away with "taptight" cold forming screws.

TROLL!

On Tue, 21 Jun 2016 19:10:26 +0100, "Ian Field"
wrote:



"AMuzi" wrote in message
...
On 6/20/2016 4:41 PM, Emanuel Berg wrote:
AMuzi writes:

The original Vitus design popped into a large
BB hole with a molded plastic peg on the
frame side. There were others after with
a locating peg (the gear wire(s) hold it
against the frame). Trek's first design had
two 3mm screws threaded into the BB shell,
like a mini belt-with-suspenders. Modern ones
thread a 5mm screw into the BB shell, no nut.

Perhaps you can make such a hole in the frame,
if there isn't one?


Easily. Drill a 4mm hole (theoretically 4.2mm but a hand drill dills
large) and tap it m5x0.8.

The tube section they make the BB out of is usually too thin walled to tap a
machine thread.

Once you've chewed up the hole trying to tap a thread into it, you end up
using a much bigger self tapping screw.

You might get away with "taptight" cold forming screws.

Gee, I wish you had posted this sooner. Damn, I've got three bikes
with a threaded hole in the bottom bracket to hold the cable guide.
And, my goodness, one of the bikes is probably 25 years old.

I guess I had better sell them quick, before the bottom bracket falls
off.
--
cheers,

John B.

On Tue, 21 Jun 2016 20:16:18 +0100, "Ian Field"
wrote:



"AMuzi" wrote in message
...
On 6/21/2016 1:10 PM, Ian Field wrote:


"AMuzi" wrote in message
...
On 6/20/2016 4:41 PM, Emanuel Berg wrote:
AMuzi writes:

The original Vitus design popped into a large
BB hole with a molded plastic peg on the
frame side. There were others after with
a locating peg (the gear wire(s) hold it
against the frame). Trek's first design had
two 3mm screws threaded into the BB shell,
like a mini belt-with-suspenders. Modern ones
thread a 5mm screw into the BB shell, no nut.

Perhaps you can make such a hole in the frame,
if there isn't one?


Easily. Drill a 4mm hole (theoretically 4.2mm but a hand
drill dills large) and tap it m5x0.8.

The tube section they make the BB out of is usually too thin
walled to tap a machine thread.

Once you've chewed up the hole trying to tap a thread into
it, you end up using a much bigger self tapping screw.

You might get away with "taptight" cold forming screws.

And yet the overwhelming majority of new bikes in my showroom are tapped,
with a nylon plate installed. On steel frames, it's about 3.5mm of
material and failure is vanishingly rare

Well it would be on a CNC production line - just try doing that with hand
tools...............................

Well, I've done several with "hand tools" and amazingly it worked.
Just call me "Old CNC Hands".
--
cheers,

John B.

On Tue, 21 Jun 2016 14:18:59 -0700 (PDT), Sir Ridesalot
wrote:

On Tuesday, June 21, 2016 at 2:09:00 PM UTC-4, Ian Field wrote:
"AMuzi" wrote in message
...
On 6/20/2016 4:41 PM, Emanuel Berg wrote:
AMuzi writes:

The original Vitus design popped into a large
BB hole with a molded plastic peg on the
frame side. There were others after with
a locating peg (the gear wire(s) hold it
against the frame). Trek's first design had
two 3mm screws threaded into the BB shell,
like a mini belt-with-suspenders. Modern ones
thread a 5mm screw into the BB shell, no nut.

Perhaps you can make such a hole in the frame,
if there isn't one?


Easily. Drill a 4mm hole (theoretically 4.2mm but a hand drill dills
large) and tap it m5x0.8.

The tube section they make the BB out of is usually too thin walled to tap a
machine thread.

Once you've chewed up the hole trying to tap a thread into it, you end up
using a much bigger self tapping screw.

You might get away with "taptight" cold forming screws.

TROLL!

or FOOL?
--
cheers,

John B.

"John B." wrote in message
news
On Tue, 21 Jun 2016 19:10:26 +0100, "Ian Field"
wrote:



"AMuzi" wrote in message
...
On 6/20/2016 4:41 PM, Emanuel Berg wrote:
AMuzi writes:

The original Vitus design popped into a large
BB hole with a molded plastic peg on the
frame side. There were others after with
a locating peg (the gear wire(s) hold it
against the frame). Trek's first design had
two 3mm screws threaded into the BB shell,
like a mini belt-with-suspenders. Modern ones
thread a 5mm screw into the BB shell, no nut.

Perhaps you can make such a hole in the frame,
if there isn't one?


Easily. Drill a 4mm hole (theoretically 4.2mm but a hand drill dills
large) and tap it m5x0.8.

The tube section they make the BB out of is usually too thin walled to tap
a
machine thread.

Once you've chewed up the hole trying to tap a thread into it, you end up
using a much bigger self tapping screw.

You might get away with "taptight" cold forming screws.

Gee, I wish you had posted this sooner. Damn, I've got three bikes
with a threaded hole in the bottom bracket to hold the cable guide.
And, my goodness, one of the bikes is probably 25 years old.

I've done hundreds - there, see, I can make up fairy tales too.

On Friday, June 24, 2016 at 1:39:11 PM UTC-4, Ian Field wrote:
"John B." wrote in message
news
On Tue, 21 Jun 2016 19:10:26 +0100, "Ian Field"
wrote:



"AMuzi" wrote in message
...
On 6/20/2016 4:41 PM, Emanuel Berg wrote:
AMuzi writes:

The original Vitus design popped into a large
BB hole with a molded plastic peg on the
frame side. There were others after with
a locating peg (the gear wire(s) hold it
against the frame). Trek's first design had
two 3mm screws threaded into the BB shell,
like a mini belt-with-suspenders. Modern ones
thread a 5mm screw into the BB shell, no nut.

Perhaps you can make such a hole in the frame,
if there isn't one?


Easily. Drill a 4mm hole (theoretically 4.2mm but a hand drill dills
large) and tap it m5x0.8.

The tube section they make the BB out of is usually too thin walled to tap
a
machine thread.

Once you've chewed up the hole trying to tap a thread into it, you end up
using a much bigger self tapping screw.

You might get away with "taptight" cold forming screws.

Gee, I wish you had posted this sooner. Damn, I've got three bikes
with a threaded hole in the bottom bracket to hold the cable guide.
And, my goodness, one of the bikes is probably 25 years old.

I've done hundreds - there, see, I can make up fairy tales too.

The Troll liveth in Ian Field. LOL

Cheers