Lefty

bhubb said:

Anybody had any luck installing a cyclometer to a Cannondale Lefty? My dealer says it can't be
done. Any ideas??

Try an avocet. The pickup sits right by the dropout.

bhubb said:

Anybody had any luck installing a cyclometer to a Cannondale Lefty? My dealer says it can't be
done. Any ideas??

You dealer is an uncreative soul.

Use a reflector bracket. Those things that clamp the sparkly red things to the seatpost. Clamp it to
the fork leg, then its a simple matter of zip ties to get the sensor positioned close to the magnet.

A

"bhubb" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Anybody had any luck installing a cyclometer to a Cannondale Lefty? My dealer says it can't be
done. Any ideas??

Put the magnet on one of the spokes of your disc, it requires one of the flat magnets that would
install between two spokes on a normal wheel, then install the pickup sensor as normal. I've run
this configuration for almost a year now, no problems.

If it sits to far from the spokes like my Chubby does. Then you can shim it big time till it works.

Fire up MTB 03

(bhubb) said:

Anybody had any luck installing a cyclometer to a Cannondale Lefty? My dealer says it can't be
done. Any ideas??

#1 - Find a new dealer.

#2 Simply mount the pickup to the fork up near the top of the tire.
Install the magnet near the rim.

I do this on ALL of my bikes as it makes for a much neater installation than running the cable all
the way down the fork leg. The installation only needs ONE fork leg, so a Lefty is no problem.

Here's just one way to do it, as I did on one of my Bombers:
<http://www.bburke.com/AMB-disc-comp.jpg>

You may need to use a small amount of imagination when installing the pickup to the fork leg, and
possible longer cable ties than are included in the cyclocomputer box.

Keywords to jog the imagination: foam weatherstripping, silicone or hot melt glue, epoxy, electrical
tape... <G>

Barry

B a r r y B u r k e J r . said:

(bhubb) said:

Anybody had any luck installing a cyclometer to a Cannondale Lefty? My dealer says it can't be
done. Any ideas??

#1 - Find a new dealer.

One more thing, sorry to reply to my own post.

For some reason many people beat their heads on the wall installing computers, as they
incorrectly believe that the magnet / pickup needs to be near the hub. It makes NO difference
where the pickup is.

Once around is once around. Computers simply count revolutions.

Have fun, Barry

B a r r y B u r k e J r . said...

Quoted message said:

One more thing, sorry to reply to my own post.

For some reason many people beat their heads on the wall installing computers, as they
incorrectly believe that the magnet / pickup needs to be near the hub. It makes NO difference
where the pickup is.

Once around is once around. Computers simply count revolutions.

Have fun, Barry

My computer gives very specific directions to mount it near the hub. I may work further up, but
there is a difference. The magnet will fly by the pickup a lot faster if it is near the rim.

Super Slinky said:

B a r r y B u r k e J r . said...

Quoted message said:

One more thing, sorry to reply to my own post.

For some reason many people beat their heads on the wall installing computers, as they
incorrectly believe that the magnet / pickup needs to be near the hub. It makes NO difference
where the pickup is.

Once around is once around. Computers simply count revolutions.

Have fun, Barry

My computer gives very specific directions to mount it near the hub. I may work further up, but
there is a difference. The magnet will fly by the pickup a lot faster if it is near the rim.

It will be travelling faster, but it will still go around the same number of times in a given
interval. That is all the computer cares about.

A

Quoted message said:

Quoted message said:

My computer gives very specific directions to mount it near the hub. I may work further up, but
there is a difference. The magnet will fly by the pickup a lot faster if it is near the rim.

It will be travelling faster, but it will still go around the same number of times in a given
interval. That is all the computer cares about.

But, it may go by the sensor so fast the mechanical switch may not have time to fully engage before
loosing the magnetic field. Maybe not likely, but possible.

"B a r r y B u r k e J r ." <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

(bhubb) said:

Anybody had any luck installing a cyclometer to a Cannondale Lefty? My dealer says it can't be
done. Any ideas??

#1 - Find a new dealer.

#2 Simply mount the pickup to the fork up near the top of the tire.
Install the magnet near the rim.

I do this on ALL of my bikes as it makes for a much neater installation than running the cable all
the way down the fork leg. The installation only needs ONE fork leg, so a Lefty is no problem.

Here's just one way to do it, as I did on one of my Bombers:
<http://www.bburke.com/AMB-disc-comp.jpg>

You may need to use a small amount of imagination when installing the pickup to the fork leg, and
possible longer cable ties than are included in the cyclocomputer box.

Keywords to jog the imagination: foam weatherstripping, silicone or hot melt glue, epoxy,
electrical tape... <G>

Barry

That would work fantastic... except there's really no reason to do it on a normal fork, when the
speed the magnet is moving by the sensor can cause problems (and yes, I have personally seen this).

Oh yeah, and one other little thing: The Lefty is an inverted fork.

I've seen it done a few times, what basically happens is you need to rig up a way to clamp the
sensor way down at the "dropout", and then attach the magnet to the disc brake. Make sure you have
clearance, though!

Jon Bond

Jon Bond said:

That would work fantastic... except there's really no reason to do it on a normal fork, when the
speed the magnet is moving by the sensor can cause problems (and yes, I have personally seen this).

Adjust it, or get a better magnet.

The LBS I work at does EVERY installation at the top of the fork, with zero customer complaints.

One of my personal road bikes has registered max speeds in the high 50's, with a GPS concurring,
without the magnet going too fast for the pickup.

Barry

"B a r r y B u r k e J r ." <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Jon Bond said:

That would work fantastic... except there's really no reason to do it on

a

Quoted message said:

Quoted message said:

normal fork, when the speed the magnet is moving by the sensor can cause problems (and yes, I
have personally seen this).

Adjust it, or get a better magnet.

I don't see the reason to put the sensor up there. You're not saving weight - you've still got the
same length wire. The wires are designed to be long enough to reach down near the hub, so if you put
them up at teh brake boss, you've got an extra foot of wire you need to deal with. Plus, many
computers come with magnets designed to be placed between two spokes (such as the cateye enduro 2).
This only works when you have the magnet down near where the spokes cross. I'm not saying it doesn't
make sense putting it up there, but why bother when you can install it the way it was designed?

Quoted message said:

The LBS I work at does EVERY installation at the top of the fork, with zero customer complaints.

One of my personal road bikes has registered max speeds in the high 50's, with a GPS concurring,
without the magnet going too fast for the pickup.

And I've seen one that had problems over 20mph no matter how we adjusted it in the shop. Yeah, maybe
the magnet or computer wasn't great, but why replace either one when they'd work just fine when
installed as they should be (and it did work when it was down by the hub just fine)?

Quoted message said:

Barry

And I reiterate - you can't install a sensor on a lefty fork like that. Besides the fact that they
don'ot have brake bosses, even just installing them high doesn't work, because they're inverted. Why
ignore the main point of the argument?

Jon Bond

"Jon Bond" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

"B a r r y B u r k e J r ." <[email hidden]>

wrote

Quoted message said:

in message "]news:[email hidden]...

Quoted message said:

Jon Bond said:

That would work fantastic... except there's really no reason to do it

on

Quoted message said:

a

Quoted message said:

Quoted message said:

normal fork, when the speed the magnet is moving by the sensor can

cause

Quoted message said:

Quoted message said:

Quoted message said:

problems (and yes, I have personally seen this).

Adjust it, or get a better magnet.

I don't see the reason to put the sensor up there. You're not saving weight - you've still got the
same length wire. The wires are designed to be long enough to reach down near the hub, so if you
put them up at teh brake boss, you've got an extra foot of wire you need to deal with. Plus, many
computers come with magnets designed to be placed between two spokes (such as the cateye enduro
2). This only works when you have the magnet down near where the spokes cross. I'm not saying it
doesn't make sense putting it up there, but why bother when you can install it the way it was
designed?

Quoted message said:

The LBS I work at does EVERY installation at the top of the fork, with zero customer complaints.

One of my personal road bikes has registered max speeds in the high 50's, with a GPS concurring,
without the magnet going too fast for the pickup.

And I've seen one that had problems over 20mph no matter how we adjusted

it

Quoted message said:

in the shop. Yeah, maybe the magnet or computer wasn't great, but why replace either one when
they'd work just fine when installed as they

should

Quoted message said:

be (and it did work when it was down by the hub just fine)?

Quoted message said:

Barry

And I reiterate - you can't install a sensor on a lefty fork like that. Besides the fact that they
don'ot have brake bosses, even just installing them high doesn't work, because they're inverted.
Why ignore the main

point

Quoted message said:

of the argument?

Jon Bond

And by the way:

@.efc3977/3"]http:[email hidden]@.efc3977/3

That might be helpful.

Jon Bond

RE/

Quoted message said:

Anybody had any luck installing a cyclometer to a Cannondale Lefty? My dealer says it can't be
done. Any ideas??

When I was at the local Performance shop to get a replacement mount for my CatEye, I noticed that
they also sold mounts with extra-long wires - so the sensor could be mounted on the rear wheel.
About fifteen bucks...
--
PeteCresswell

I have three leftys.. all with computers... glue the magnet on the disc brake rotor. I have some
flat plastic magnets that work when there is enough clearance so the magnet doesn't hit the lefty ..
but I also have some little round magnets that i just glue between rotor "webs" .. and then glue a
plastic magnet behind it to make sure it doesn't fall off. These do NOT come off even with high heat
( like riding down mt. snow or killington where the rotors turn blue).

I did have problems with a vetta wireless.. signal not strong enough when it was mounted down at the
rotor... converted to a "wired" vetta and all is well.

charlie

di said:

"bhubb" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Anybody had any luck installing a cyclometer to a Cannondale Lefty? My dealer says it can't be
done. Any ideas??

Put the magnet on one of the spokes of your disc, it requires one of the flat magnets that would
install between two spokes on a normal wheel, then install the pickup sensor as normal. I've run
this configuration for almost a year now, no problems.

"Jon Bond" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

"Jon Bond" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

"B a r r y B u r k e J r ." <[email hidden]>

wrote

Quoted message said:

in message "]news:[email hidden]...

Quoted message said:

On Tue, 21 Oct 2003 18:41:06 GMT, "Jon Bond" <[email hidden]> wrote:

>That would work fantastic... except there's really no reason to do

it

Quoted message said:

on

Quoted message said:

a

Quoted message said:

>normal fork, when the speed the magnet is moving by the sensor can

cause

Quoted message said:

Quoted message said:

>problems (and yes, I have personally seen this).

Adjust it, or get a better magnet.

I don't see the reason to put the sensor up there. You're not saving weight - you've still got
the same length wire. The wires are designed

to

Quoted message said:

Quoted message said:

be long enough to reach down near the hub, so if you put them up at teh brake boss, you've got
an extra foot of wire you need to deal with.

Plus,

Quoted message said:

Quoted message said:

many computers come with magnets designed to be placed between two

spokes

Quoted message said:

Quoted message said:

(such as the cateye enduro 2). This only works when you have the magnet down near where the
spokes cross. I'm not saying it doesn't make sense putting it up there, but why bother when you
can install it the way it

was

Quoted message said:

Quoted message said:

designed?

Quoted message said:

The LBS I work at does EVERY installation at the top of the fork, with zero customer
complaints.

One of my personal road bikes has registered max speeds in the high 50's, with a GPS
concurring, without the magnet going too fast for the pickup.

And I've seen one that had problems over 20mph no matter how we adjusted

it

Quoted message said:

in the shop. Yeah, maybe the magnet or computer wasn't great, but why replace either one when
they'd work just fine when installed as they

should

Quoted message said:

be (and it did work when it was down by the hub just fine)?

Quoted message said:

Barry

And I reiterate - you can't install a sensor on a lefty fork like that. Besides the fact that
they don'ot have brake bosses, even just

installing

Quoted message said:

Quoted message said:

them high doesn't work, because they're inverted. Why ignore the main

point

Quoted message said:

of the argument?

Jon Bond

And by the way:

@.efc3977/3"]http:[email hidden]@.efc3977/3

Quoted message said:

That might be helpful.

Jon Bond

That's exactly how mine is installed, only difference it my computer is a Cateye, it works
perfectly.

Jon Bond said:

Quoted message said:

Adjust it, or get a better magnet.

I don't see the reason to put the sensor up there. You're not saving weight - you've still got the
same length wire.

Absolutely true.

Quoted message said:

The wires are designed to be long enough to reach down near the hub, so if you put them up at teh
brake boss, you've got an extra foot of wire you need to deal with.

The wire is wound around a cable housing or an inch or so of fork leg, like a fishing pole
decorative winding.

Quoted message said:

Plus, many computers come with magnets designed to be placed between two spokes (such as the cateye
enduro 2).

Better magnets are $2 - retail.

Quoted message said:

I'm not saying it doesn't make sense putting it up there, but why bother when you can install it
the way it was designed?

It looks 100% better, and there's much less chance of the loose wire snagging on something along
the trail.

Quoted message said:

And I've seen one that had problems over 20mph no matter how we adjusted it in the shop. Yeah,
maybe the magnet or computer wasn't great, but why replace either one when they'd work just fine
when installed as they should be (and it did work when it was down by the hub just fine)?

Because it's _fugly_ with all those extra ty wraps and that fragile little wire reaching all the way
down to the hub.

Not to mention what a new sensor costs when yours is left hanging in the prickers along the trail at
the West Hartford Res. <G>

Barry

"B a r r y B u r k e J r ." <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Jon Bond said:

Quoted message said:

Adjust it, or get a better magnet.

I don't see the reason to put the sensor up there. You're not saving weight - you've still got
the same length wire.

Absolutely true.

Quoted message said:

The wires are designed to be long enough to reach down near the hub, so if you put them up at
teh brake boss, you've got an extra foot of wire you need to deal with.

The wire is wound around a cable housing or an inch or so of fork leg, like a fishing pole
decorative winding.

Quoted message said:

Quoted message said:

Plus, many computers come with magnets designed to be placed between two spokes (such as the
cateye enduro 2).

Better magnets are $2 - retail.

I'm a college student - $2 is a couple cheap beers 😉

Quoted message said:

Quoted message said:

I'm not saying it doesn't make sense putting it up there, but why bother when you can install it
the way it

was

Quoted message said:

Quoted message said:

designed?

It looks 100% better, and there's much less chance of the loose wire snagging on something along
the trail.

I don't know about that - The only "loose" section of wire is where you stop wrapping it around the
brake cable (or line) and leave a bit of slack for travel, a problem you'd still have.

Quoted message said:

Quoted message said:

And I've seen one that had problems over 20mph no matter how we adjusted

it

Quoted message said:

Quoted message said:

in the shop. Yeah, maybe the magnet or computer wasn't great, but why replace either one when
they'd work just fine when installed as they

should

Quoted message said:

Quoted message said:

be (and it did work when it was down by the hub just fine)?

Because it's _fugly_ with all those extra ty wraps and that fragile little wire reaching all the
way down to the hub.

Which is why smart people use ones with heavy wires like the Enduro 2, or if they're really worried,
wireless. Plus, you're going to have fugly zip ties anyway, just in a different place. And you have
to leave that ugly, unfinished looking brake boss in, instead of taking it out and putting in a
nice, clean plug.

Quoted message said:

Not to mention what a new sensor costs when yours is left hanging in the prickers along the trail
at the West Hartford Res. <G>

Not many prickers there, at least not last year - just on the one nasty rutted fireroad climb and a
few places under the powerlines. Cover is too thick for much undergrowth in most places. Also, you
really don't want to be using one there, its not very encouraging seeing 6mph as your average!
(fastest time I've ever heard of for the "loop" was 55 minutes - and its a 9 mile loop.)

Quoted message said:

Barry

I'm not saying your method is necessarily worse, I'm just saying its not really any better!

Jon

Quoted message said:

But, it may go by the sensor so fast the mechanical switch may not have

time

Quoted message said:

to fully engage before loosing the magnetic field. Maybe not likely,

but

Quoted message said:

possible.

I'm pretty sure the pickup is electric, not mechanical. If you hear clicky noises inside your
pickup, then it's either mechanical or broken.

--
Phil, Squid-in-Training