double drilled cranks?

I don't really think it would work on splined cranks. You need that
pinch bolt to keep everything snug. If you had another hole - well, it
would be more like a star kindof hole - bored into the crank, it would
lack the pinch bolt.

Say you overcame that issue, and you have a way to keep everything
tight. I'd imagine that after a couple of drops, the cranks would start
to bend.

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It would be another pedal hole.

--
mornish

tobbogonist said:

that was neat, now i only have to put it to use.
parents banned my uni due to low school marks so if there are any nerds
out there with a kind heart, i have a psychology assignment that is a
few weeks over due, it is on intelligence.

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since I'm sure not many people have tried it, it may be that the only
way to find out is to do it.

I agree though, that it may weaken the cranks a lot.

--
onelesscar

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It would be really hard to do that on koxx cranks because of their
design. It has this metal, splined pedal insert that crimps down into
the alu crank so you would have to dupicate that whole thing for
another hole. It would be hard.

--
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(disclaimer: i may not know what i am talking about)

Evan said:

i just found some candy in a suitcase under my bed, i have no clue how
old it is...i ate it anyway

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oh. It would be nice if someone designed cranks like that though. hmm,
KH cranks won't work because there steel tubing correct?

what does the pedal insert thing look like?

--
mornish

tobbogonist said:

that was neat, now i only have to put it to use.
parents banned my uni due to low school marks so if there are any nerds
out there with a kind heart, i have a psychology assignment that is a
few weeks over due, it is on intelligence.

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correct.

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mornish said:

oh. It would be nice if someone designed cranks like that though. hmm,
KH cranks won't work because there steel tubing correct?

what does the pedal insert thing look like?

umm why wouldn't steel tubing work?
you CAN drill a hole in it, and you could weld reinforcements to it

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KH cranks seem to have a bad reputation for bending nowadays and
drilling another hole in them would probably be really bad.

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(disclaimer: i may not know what i am talking about)

Evan said:

i just found some candy in a suitcase under my bed, i have no clue how
old it is...i ate it anyway

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two pedel holes would bash your ankle up pretty bad in the shorter crank
setting (I think) because the q factor would still go outwards into
your ankle. plus after a switching X amount of times it would ware out

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Radical Reed said:

two pedel holes would bash your ankle up pretty bad in the shorter crank
setting (I think) because the q factor would still go outwards into
your ankle. plus after a switching X amount of times it would ware out

What the HECK do you mean by Q factor??
there is NO q factor of cranks

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skrobo said:

What the HECK do you mean by Q factor??
there is NO q factor of cranks

What are you talking about? Q factor is the distance from pedal to
pedal, with more q factor, the cranks are angled out (like KH, profile,
etc.)

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(disclaimer: i may not know what i am talking about)

Evan said:

i just found some candy in a suitcase under my bed, i have no clue how
old it is...i ate it anyway

'Gallery.unicyclist.com/spencer'
(http://Gallery.unicyclist.com/spencer)
AIM: Litldude2
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yea, that's why I was thinking of using koxx cranks.

--
mornish

tobbogonist said:

that was neat, now i only have to put it to use.
parents banned my uni due to low school marks so if there are any nerds
out there with a kind heart, i have a psychology assignment that is a
few weeks over due, it is on intelligence.

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I think you could drill and tap the Koxx cranks. The Kookas are aluminum
and are quite hard enough to accept pedals without inserts. I guess
finding out what type of aluminum the Koxx ones are made of.

In summary: You want to make sure your Koxx is hard enough before you
start drilling.

Sorry i didn't think of that till i finished typing the first part and
couldn't help myself.

--
pdc

"What doesn't kill you strengthens you, what kills you strengthens your
mother"
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ok, do you think the extra holes would weakon the cranks alot?

PDC: how do you drill/tap the holes, do you have someone do them for
you?

--
mornish

tobbogonist said:

that was neat, now i only have to put it to use.
parents banned my uni due to low school marks so if there are any nerds
out there with a kind heart, i have a psychology assignment that is a
few weeks over due, it is on intelligence.

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would it be possible to put peices of metal inside the KH cranks so that
it would work?

--
mornish

tobbogonist said:

that was neat, now i only have to put it to use.
parents banned my uni due to low school marks so if there are any nerds
out there with a kind heart, i have a psychology assignment that is a
few weeks over due, it is on intelligence.

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I dont know the ins and outs but for street riding it could be a pain.

I could imagine the end of the cranks getting in the way for flip
tricks and the such. Maybe, maybe not.

Mike

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oh, didn't think of that.

--
mornish

tobbogonist said:

that was neat, now i only have to put it to use.
parents banned my uni due to low school marks so if there are any nerds
out there with a kind heart, i have a psychology assignment that is a
few weeks over due, it is on intelligence.

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The Koxx cranks have a metal insert that the pedals go into, so perhaps
the aluminum isn't strong enough to tap a pedal thread into.

I guess there is only one way to find out though

jim

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You could weld a tubular insert into the KH cranks and thread it to
accept a pedal, but this would be some serious machine work and it
would taker a skilled machinist to make a good job of it. Also the
cranks are I believe CrMo not steel so more difficult to weld, harder
on cutting tools etc. which all adds up to more cost. It would probably
be better just to get different cranks, with their self extracting
system KH cranks are as easy to remove as pedals, although would take
longer unless you had 2 sets of pedals, becaue you'd have to swap them
over aswell. That fact that KH cranks stick out (Im not going anywhere
near the whole Q-factor debate) means that the protruding ends might
hit your foot/ankle when it is between the 9 and 3 positions

People seem to have had a lot of problems with the koxx pedal threads,
I certainly wouldn't thread the aluminium directly, a pressed steel
insert would be needed. Drilling a hole would weaken the cranks, but as
it is near the pedal end the moment is less so this effect would be
diminished so it might be workable. Also I understand people genreally
bust cranks more doing street than trials, and for street the pedal
will be in the nearer hole, decreasing the moment so done properly this
setup would actually be stronger than your current cranks. However with
the pedal in the outer hole there would be a significant weakening,
just a case of how much force you put on them doing trials. Also you're
probably going to need some milling work done to get a flat for the
pedal nut to butt up to get a solid fit.

Having said all this, there's only one way to find out, just make sure
you used a skilled machinist who understands the aim of the project and
is familiar with the materials used, for goodness sake don't try it
yourself at home with a power drill! Good luck.

--
kington99

Dave

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