drilling cranks

Shippy · 2011-09-23, 07:21 PM

i know that people drill holes in kris holm cranks but can you do the same thing with nimbus ventures?

if this has been done already, got any pictures? and will it weaken them?

thanks

juggleaddict · 2011-09-23, 07:30 PM

The nimbus cranks are built to be much lighter than the KH cranks, and they have a bottle-neck shape that would make the metal very thin if you drilled a hole. Not sure if it would work.

OUK · 2011-09-23, 07:57 PM

Ventures are way too weak to drill!! Don't do it ! :P But they are also really light so there's no need to drill them, only because of look, but they will probably break pretty fast if you drill them, and strength more important than look and weight IMO

So I would say no!

MuniAddict · 2011-09-23, 08:13 PM

For those wanting to reduce rotational weight on their 36ers, the qu-ax isis cranks are much lighter than ventures, and about half the weight of moments. So unless you plan to do drops or other extreme stuff on your 36er, why not forget drilling your heavier cranks and just get these? And there on sale as well for only $10 a pair!

johnfoss · 2011-09-23, 08:18 PM

I have a pair of those Qu-Ax 114s. They're excellent for road riding on the Coker, and beautiful!

MuniAddict · 2011-09-23, 08:30 PM

Quote:

Originally Posted by johnfoss

I have a pair of those Qu-Ax 114s. They're excellent for road riding on the Coker, and beautiful!

Yes, and I just ordered a pair of 114's. I thought about getting the 100's, but the 114's are more versatile, and closer in size to my 110 moments, so the difference in speed and feel should be nil, or as "Dr Evil" might say, "inconsequential".

Nurse Ben · 2011-09-24, 02:25 PM

The QuAx aluminum cranks are pretty light, can handle muni for a little while, I have a few pairs that I got on sale in a 170, they lasted about three months of regular riding before othey started slipping.

If you want lightweight, the Venture are about as good as you can get, and even those will probably wear faster than Moments.

There are better places to cut weight, such as pedals, tire/tube, seat post, seat, even frame. Rotational weight is more significant than crank weight, so get a lighter tire.

My current 29er is very light:

KH Frame
KH Freeride Seat
KH Adj Seat Post
Salsa QR Seat Post Clamp
KH Seat Stiffener with custom grab handle/brake hanger
KH Freeride Rim
Nimbus Hub
Nimbus Venture II 150's
Fixation Mesa Pedals
Maxxis Ardent 2.4
Duro 26 x 3 DH Tube

I could cut weight by changing:

Frame: not much to lose, already have mine as bare aluminum, Ti is heavier
Fixed seat post (under consideration, will limit max seat angle)
Single bolt seat post clamp (harder to adjust for up/downhill)
Lightweight tube (more flats)
Lose the brake (less control)
Grab handle setup: light and powerful, not much to gain, lots to lose
Shorter cranks (less power, more difficult to use for off road riding)
Lighter tire (not much to lose here, but an RR is lighter, though less effective)
Lighter pedals, are there any that are lighter and won't break?
Rim: Nothing to lose
Hub: KH Ti hub is too fragile, maybe the Addict ti hub?
Spokes/Nips: Maybe DB spokes would be lighter?

But seriously, other than the possibility of a lighter seat post and maybe the hub, most of these changes would lead to more increased parts failure, less effective control, and for a few ounces it is insignificant in terms of weight change.

BTW, I wouldn't drill those Ventures

This is what a happy muni looks like after a nice ride. Good muni, good muni, stay!

UAC · 2011-11-14, 05:04 PM

I know its not the best idea, but did anybody drill Nimbus Venture2 cranks yet?
I think of doing it and hearing some opinions from someone who (presumably) did it before will be greatly appreciated!

Thanks,
Flaviu

Nurse Ben · 2011-11-14, 06:57 PM

Quote:

I know its not the best idea, but did anybody drill Nimbus Venture2 cranks yet?
I think of doing it and hearing some opinions from someone who (presumably) did it before will be greatly appreciated!

It's such a bad idea that no one has done it, so you can be the first to ruin some cranks

Are you doing it further lighten them or are you trying to have a second pedal position?

Since there are already folks who have bent them, I'd bet that drilling holes will lead to broken cranks. I'd try some Quax, they are light and pretty strong for their weight, plus they're inexpensive.

UAC · 2011-11-15, 08:02 AM

I need that extra hole for pedal position. I know QU-AX cranks and use them on some of my other unicycles. Both their 125s and 145s have the perfect profile for extra pedal holes but, unfortunately, they're not thick enough in the middle

However, besides Moments of course, the new Ventures seem the most drill-able of all available options now...if only those back grooves would not be there to provide more tensile strength!

@Nurse Ben: can you link me to the bent Venture2 story?

Thank you,
Flaviu

aracer · 2011-11-15, 08:10 AM

Quote:

Originally Posted by UAC

I need that extra hole for pedal position.

Why you don't just get shorter fixed length cranks and swap the cranks then?

UAC · 2011-11-15, 08:30 AM

hehe, why not swap with another unicycle...or maybe a bicycle

I'm the one into mods, trying to do nice things, you know...

2011-09-23, 07:21 PM	#1
Shippy I couldn't afford a whole bike..... Join Date: Jul 2011 Location: Bristol, UK Posts: 120	drilling cranks i know that people drill holes in kris holm cranks but can you do the same thing with nimbus ventures? if this has been done already, got any pictures? and will it weaken them? thanks

2011-09-23, 07:30 PM	#2
juggleaddict late-night rider Join Date: Aug 2009 Location: Atlanta, Ga Age: 23 Posts: 623	The nimbus cranks are built to be much lighter than the KH cranks, and they have a bottle-neck shape that would make the metal very thin if you drilled a hole. Not sure if it would work. __________________ Steel is real! => I ride a Nimbus!

2011-09-23, 07:57 PM	#3
OUK An)-On Juncher Join Date: Dec 2008 Location: Denmark, Ollerup Age: 17 Posts: 1,110	Ventures are way too weak to drill!! Don't do it ! :P But they are also really light so there's no need to drill them, only because of look, but they will probably break pretty fast if you drill them, and strength more important than look and weight IMO So I would say no! __________________ ~An)-On Ethjulet Cykel - UDC Denmark Danish Trial Team I ride one wheel cus it's way more sustainable than riding two!

2011-09-23, 08:13 PM	#4
MuniAddict Not "2" Tired Join Date: Aug 2006 Age: 57 Posts: 13,540	For those wanting to reduce rotational weight on their 36ers, the qu-ax isis cranks are much lighter than ventures, and about half the weight of moments. So unless you plan to do drops or other extreme stuff on your 36er, why not forget drilling your heavier cranks and just get these? And there on sale as well for only $10 a pair! __________________ My latest TV segment UniGeezer.com My videos Last edited by MuniAddict; 2011-09-23 at 08:15 PM.

2011-09-23, 08:18 PM	#5
johnfoss North Shore ridin' Join Date: Apr 2002 Location: Carmichael, CA Posts: 14,927	I have a pair of those Qu-Ax 114s. They're excellent for road riding on the Coker, and beautiful! __________________ John Foss "jfoss" at "unicycling.com" www.unicycling.com "Unicycling is a way of looking at the world, making a choice to slow down, finish what you start, doing things not because they're easy, but because they're a challenge." -- Nurse Ben

2011-09-24, 02:25 PM	#7
Nurse Ben XC Muni Join Date: Jul 2008 Location: Southeast USA Age: 47 Posts: 3,951	The QuAx aluminum cranks are pretty light, can handle muni for a little while, I have a few pairs that I got on sale in a 170, they lasted about three months of regular riding before othey started slipping. If you want lightweight, the Venture are about as good as you can get, and even those will probably wear faster than Moments. There are better places to cut weight, such as pedals, tire/tube, seat post, seat, even frame. Rotational weight is more significant than crank weight, so get a lighter tire. My current 29er is very light: KH Frame KH Freeride Seat KH Adj Seat Post Salsa QR Seat Post Clamp KH Seat Stiffener with custom grab handle/brake hanger KH Freeride Rim Nimbus Hub Nimbus Venture II 150's Fixation Mesa Pedals Maxxis Ardent 2.4 Duro 26 x 3 DH Tube I could cut weight by changing: Frame: not much to lose, already have mine as bare aluminum, Ti is heavier Fixed seat post (under consideration, will limit max seat angle) Single bolt seat post clamp (harder to adjust for up/downhill) Lightweight tube (more flats) Lose the brake (less control) Grab handle setup: light and powerful, not much to gain, lots to lose Shorter cranks (less power, more difficult to use for off road riding) Lighter tire (not much to lose here, but an RR is lighter, though less effective) Lighter pedals, are there any that are lighter and won't break? Rim: Nothing to lose Hub: KH Ti hub is too fragile, maybe the Addict ti hub? Spokes/Nips: Maybe DB spokes would be lighter? But seriously, other than the possibility of a lighter seat post and maybe the hub, most of these changes would lead to more increased parts failure, less effective control, and for a few ounces it is insignificant in terms of weight change. BTW, I wouldn't drill those Ventures This is what a happy muni looks like after a nice ride. Good muni, good muni, stay! Last edited by Nurse Ben; 2011-09-24 at 02:30 PM.

2011-11-14, 05:04 PM	#8
UAC lonely rider Join Date: May 2006 Location: Bocsa, Romania Age: 31 Posts: 74	I know its not the best idea, but did anybody drill Nimbus Venture2 cranks yet? I think of doing it and hearing some opinions from someone who (presumably) did it before will be greatly appreciated! Thanks, Flaviu __________________ "The World is a book, and those who do not travel read only a page" (Saint Augustine)

2011-11-15, 08:02 AM	#10
UAC lonely rider Join Date: May 2006 Location: Bocsa, Romania Age: 31 Posts: 74	I need that extra hole for pedal position. I know QU-AX cranks and use them on some of my other unicycles. Both their 125s and 145s have the perfect profile for extra pedal holes but, unfortunately, they're not thick enough in the middle However, besides Moments of course, the new Ventures seem the most drill-able of all available options now...if only those back grooves would not be there to provide more tensile strength! @Nurse Ben: can you link me to the bent Venture2 story? Thank you, Flaviu __________________ "The World is a book, and those who do not travel read only a page" (Saint Augustine)

2011-11-15, 08:30 AM	#12
UAC lonely rider Join Date: May 2006 Location: Bocsa, Romania Age: 31 Posts: 74	hehe, why not swap with another unicycle...or maybe a bicycle I'm the one into mods, trying to do nice things, you know... __________________ "The World is a book, and those who do not travel read only a page" (Saint Augustine)

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