Re: Get a grip

MattB said:

JD wrote:
<snip>

Quoted message said:

Not if you have carbon bars. ODIs work only with aluminium (or

other

Quoted message said:

Quoted message said:

metal) bars because they deform carbon bars at the clamps and have

a

Quoted message said:

Quoted message said:

tendency to cause catastrophic failure.

JD where'd we get *this* one?

Got any documentation of this? My (trusted) LBS tells me otherwise

and

Quoted message said:

I'm curious about the data available to support or refute claims on
either side.

My Answer carbon bar instructions say *exactly* what JD claims.

E.P.

"MattB" <[email hidden]> wrote in message
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Quoted message said:

JD wrote:
<snip>

Quoted message said:

Not if you have carbon bars. ODIs work only with aluminium (or other
metal) bars because they deform carbon bars at the clamps and have a
tendency to cause catastrophic failure.

JD where'd we get *this* one?

Got any documentation of this? My (trusted) LBS tells me otherwise and I'm
curious about the data available to support or refute claims on either
side.

Thanks!

Matt

He comes on a little strong at times, but he's right in "this" instance. I
would choose a carbon bar with reinforced ends for ODI grips at the very
least.

TBF::. said:

"MattB" <[email hidden]> wrote in message
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Quoted message said:

JD wrote:
<snip>

Quoted message said:

Not if you have carbon bars. ODIs work only with aluminium (or other
metal) bars because they deform carbon bars at the clamps and have a
tendency to cause catastrophic failure.

JD where'd we get *this* one?

Got any documentation of this? My (trusted) LBS tells me otherwise and I'm
curious about the data available to support or refute claims on either
side.

Thanks!

Matt

He comes on a little strong at times, but he's right in "this" instance. I
would choose a carbon bar with reinforced ends for ODI grips at the very
least.

Um, yeah. Thanks for the warning. I think I'll be ok.

I've heard this about this combination (ODI lock-ons and carbon bars)
from several unofficial (yet respectable) sources and I'm curious where
it comes from. Googling turned up much speculation and some warnings
against over tightening on carbon bars but no actual data or even an
isolated example of failure due to lock on grips.
I'm not saying those examples don't exist, just that I can't find them.
I'd like to know what the specifics are.

Matt

MattB said:

I've heard this about this combination (ODI lock-ons and carbon bars)

Quoted message said:

from several unofficial (yet respectable) sources and I'm curious

where

Quoted message said:

it comes from.

Since Answer makes the carbon bars I have on my bike, I would consider
their instructions to be official.

But, instead of playing Doubting Thomas, you could actually call them
and ask them what the deal is. Or Easton. I'm sure they've got tech
support people who would be able to explain it in detail for you.

E.P.

MattB said:

I'd like to know what the specifics are.

The clamps warp the carbon weakening it all of the way around the bar,
kind of like what a pipe cutter does, only with warpage instead of a
cut. That warpage can and has caused catastrophic failure. I
certainly don't want my grip pinching the bar off as I land a jump, or
am railing a rough corer. I've had carbon fail on me before and it's
all of a sudden-like. My friend Kevin had ODIs on a Monkey Lite and
pulled the grips to swap for new ones and tossed the bars after seeing
major warpage and what seemed like a hairline crack that he caught just
in time.

JD

"MattB" <[email hidden]> wrote in message
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Quoted message said:

JD wrote:
<snip>

Quoted message said:

Not if you have carbon bars. ODIs work only with aluminium (or other
metal) bars because they deform carbon bars at the clamps and have a
tendency to cause catastrophic failure.

JD where'd we get *this* one?

Got any documentation of this? My (trusted) LBS tells me otherwise and I'm
curious about the data available to support or refute claims on either
side.

Thanks!

Matt

you're kidding right? JD, correlative data...c'mon

"JD" <[email hidden]> wrote in message
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Quoted message said:

MattB said:

I'd like to know what the specifics are.

The clamps warp the carbon weakening it all of the way around the bar,
kind of like what a pipe cutter does, only with warpage instead of a
cut. That warpage can and has caused catastrophic failure. I
certainly don't want my grip pinching the bar off as I land a jump, or
am railing a rough corer. I've had carbon fail on me before and it's
all of a sudden-like. My friend Kevin had ODIs on a Monkey Lite and
pulled the grips to swap for new ones and tossed the bars after seeing
major warpage and what seemed like a hairline crack that he caught just
in time.

JD

here's the correlative data you were asking for Matt....

Dave (if you say so...)

Dont think I'd care if it was just for light XC stuff, or if i knew
exactly how tight i was tightening the clamps and it wasnt that much,
but for anything bigger id be wary, and any manufacturer who doesnt
know what monkey is assembling the bar setup wont take the risk. IMO
unless you overtighten the clamp you are not going to increase the
chances of failure as a) carbon bars are very strong if compressed from
all outer angles - a bit like an egg and b) the forces your clamp needs
to be at to hold a grip on (i.e. not overtightened) are less than i can
apply with my hands, and they dont tell you to not use your hands on
the bar 🙂
Personally I've snapped a zoom alu bar (clipped a tree leaning into a
bend at 35mph), and bent a steely (hard landing of a jump on my trials
machine) and they werent fun experiences.

I dont see the need for lock-on grips - my grips always stick - clean
the bar, buy good quality grips, use carb cleaner to slip the grip on -
bingo. Even mates who bring bikes round with slipping grips soon find
that if they are old grips they are dead anyway and need replacing, or
they stick when the bar is prepared correctly.

J

J