Drilling your rim

Ok, there are several problems with just drilling your rim.

1. Because you have a 48h rim, the holes you drill will have to be
really small, making weight savings minimal.

2. Unless you have access to a skilled machinist who has done work on
bike and uni rims before you will lose considerable strength. I'm no
expert on the subject, but I can tell you that by just taking a drill
to your rim you will lose lots of strength (the double walls will be
messed up by your drill, making the rim weak).

3. You will have to take apart your wheel (unlace it) and then re-lace
it afterwards.

4. Because weight savings will be so small, and strength will be
compromised, I do not suggest doing this.

Someone with a little more metal knowledge will pitch in with some more
technical reasons not to drill the rim, but there you go.

--
maximus unius

dunawan said:

usually always

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Lots of little holes have been known to take off more weight than a
handful of big holes. There are more places on a rim to make small
holes.

That said, and having drilled many rims myself, I have yet to explore
the reaming out of the outer wall of any rim. I usually limit my metal
removal to internal surfaces. Example:

+-------------------------------------------------------------------+
|Filename: Airfoil.raw.drilled1.jpg |
|Download: http://www.unicyclist.com/attachment/20590 |
+-------------------------------------------------------------------+

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unisk8r
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wow, that's pretty cool to look at.

--
zfreak220

KH fund: $201.43/$475-$273.62 left-about four months of
saving🙁September 29ish

danger_uni said:

I hate it when people miss-quote me.

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That's a really cool rim, unisk8r!

How strong is it?

--
ivan

How's my attitude, dirt bag?entropy isn't what it used to
be.
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just over 1000g. If you think a 700c tube in your coker makes a diff,
you can feel this lighter rim even more. Drilling a smaller rim will
not result in as much weight reduction tho.

--
unisk8r
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unisk8r said:

just over 1000g. If you think a 700c tube in your coker makes a diff,
you can feel this lighter rim even more. Drilling a smaller rim will
not result in as much weight reduction tho.

Wo is that an airfoil? I presumed that it was some sort of bike rim but
your comments amde me look again, how much weight did you save?

--
kington99

Dave

- what a thoroughly post-modern subversion of the cycling genre -
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I tried to work out how much weight was saved from my my drilled rim on
my 07 kh 20 I think I worked out it saved 30g although I may have been
wrong, il work it out agin later.

--
sp4rky-m4rky

you may be lucky but you make your own luck

*)--360--O* The Unispin Elite

)---'O, Crankflip
my 'video' (

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learning 180 or 360 unispins? watch my 'video tutorial'
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I am sure that the 07 KH rims are not just drilled. Rather, they were
pre made heavy, with the intent to be drilled. There was a lot of
thought put into this.
Uniskaters rim appears elegantly done, and makes sense as a racers
mod. It is still not what it could be, strengthwise , had this drilling
been preplanned by the rim designer.
If you like the look, get a 07 KH rim, rather than drilling one
yourself. For general use, drilling a rim will be a lot of work, and it
will weaken the rim a lot.🙁

--
feel the light
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Okay, I'll just leave it the way it is.

Then, one day, I'll buy myself a nifty KH trials.

--
ivan

How's my attitude, dirt bag?entropy isn't what it used to
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For best results on weight saving, get a single wall rim, drill large
holes equidistant between the spokes, and then parallel lines of
smaller holes each side. If you have no brakes on the uni, more weight
can be saved by drilling the sidewalls too. Then use a tubeless tyre.
I also like to file down my nipples, but that's not really relevant in
a unicycling forum.

If you know a dentist, (s)he may also be able to drill the spokes,
although that can be fiddly. For maximum weight saving, a single
longitudinal hole, effectively making the spoke hollow, is best.
However, several transverse holes may be easier unless your dentist has
a steady hand.

--
Mikefule

Never ride faster than your guardian angel can fly.
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Mikefule said:

For best results on weight saving, get a single wall rim, drill large
holes equidistant between the spokes, and then parallel lines of
smaller holes each side. If you have no brakes on the uni, more weight
can be saved by drilling the sidewalls too. Then use a tubeless tyre.
I also like to file down my nipples, but that's not really relevant in
a unicycling forum.

If you know a dentist, (s)he may also be able to drill the spokes,
although that can be fiddly. For maximum weight saving, a single
longitudinal hole, effectively making the spoke hollow, is best.
However, several transverse holes may be easier unless your dentist has
a steady hand.

You could just not ride the unicycle, but instead, run... 😉

--
Borgschulze

http://borgschulze.deviantart.com/
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Borgschulze said:

You could just not ride the unicycle, but instead, run... 😉

I will do, once I've drilled my laces.

--
Mikefule

Never ride faster than your guardian angel can fly.
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Bike trials riders drill thier rims by themselfs all the time. Though
yes thought into design might help strength, its not going to matter
that much. Just keep in mind the more metal you take away the weaker it
will get. I suggest marking the holes first so they dont come out off
center. It doesnt have to be unlaced either to drill it.

--
Evan Byrne
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From what I hear you'll save about 50g. thats a much as a chocolate bar,
would strapping one of them onto your uni realy efect anything?
correct me if i'm wrong

--
thejdw

dunawan said:

why are koxx one unicycles so costly???

forrestunifreak said:

They are expensive because they use only the finest soft drink cans.

Quoted message said:

Quoted message said:

don't follow Jesus, follow me!<<

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Yeah I thought of getting a drilled rim for the uni I am building, but
then decided for that minimal amount of weight I will save vs. strength
I'll just [censored] before I ride to get the same affect probably better.

--
wickedbob

I am a bad speller! "Precision is as much a mindset as it is a
skill"-Loren
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*R.I.P Mitch Hedberg*

Ducttape said:

not gonna show you it tonight becasue I am going to play with it until I
go to bed to get it just right.........

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Drill bits and labor aren't free. Pete's drilled rim makes sense because
he has taken the best quality rim available and then made it a bit
lighter, because he was willing to put lot's of work into trading
strength he didn't need for lightness he wanted.
In general use, it would be much better IMHO to buy a very high
quality stock wheel, and only drill as a last resort.
Let's say you are a lighter then most super rider trying to set a
new level of greatness with a super more spins crank flip. Buying a KH
and drilling it extensively would be the ticket. 🙂 Ti spokes, drilled
cranks and rim. Or maybe custom light cranks (carbon ?), certainly the
lightest pedals, then drill them to.
It would seem that unicycling crankflips and funny car dragsters have
little in common. In both cases light isn't just right, it is the only
way. To strong is to heavy. Just right is light. 🙂

--
feel the light
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🙄 will people be drilling holes in clothes anytime soon?

--
thejdw

dunawan said:

why are koxx one unicycles so costly???

forrestunifreak said:

They are expensive because they use only the finest soft drink cans.

Quoted message said:

Quoted message said:

don't follow Jesus, follow me!<<

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thejdw said:

🙄 will people be drilling holes in clothes anytime soon?

Haven't you heard? Everyone's going nude these days, and all the good
riders shave their heads.

--
GUI
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Yeah, they even get small bits of their bodies cut out. Like pancreas
and spleen.

And their teeth and bones hollowed out in a special procedure. It's
quite expensive, but the weight savings are incredible!

--
ivan

How's my attitude, dirt bag?entropy isn't what it used to
be.
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