Lightening up my KH26 Guni - Page 2

munirocks · 2010-03-07, 01:26 AM

Here's a little update:

I have ordered the following items from the German UDC:

KH street saddle 2010 red
Nimbus Ventures 150mm
Onza Tensiles
Quax 170mm (they're cheap there)
Quax QX series Lucide plastic pedals with steel pins
KH rim tape red and black

So now I'm thinking about different tires:

Nokian Gazza Junior 26x2.6
Schwalbe Muddy Mary DH 26x2.5
Onza Sticky Fingers 26x2.5
Continental Rubber Queen 26x2.4
Continental Rain King DH 26x2.5
TryAll Stiky 26x2.5
Maxxis High Roller 26x2.7
Holy Roller, Minion etc...

Any recommendations? Anything else worth checking out?
I don't want to go super light on the tire but it should be heavy duty and versatile so I don't have to change tires for changing conditions...

Smilymarco · 2010-03-07, 01:43 PM

Im using the TryAll at the moment and i really like it. At least in snow it was pretty nice...
Another tire i used was the Maxxis Advantage (thats the lightweight one you dont wanna use...). I rode that in Molveno and in Steinach and it was still ok for downhill. I also used it at the 24hour race in Davos, thats what the tire was made for imo. Perfect for XC.

For the weight:
- Drill out the rim
If youre only riding XC and not really hard dh, it should work. Do what the biketrialsrider do

- If you find the tire that suits you, go tubeless.

munirocks · 2010-03-07, 04:03 PM

Thanks Marco. The rim is holy already (TryAll 26"x47mm) so no need for drilling. But for tires there are a lot of options out there. Kind of hard to decide for one over another.
I'm also wondering if wire bead is always better and often there are different rubber compounds available too. Sometimes there are also performance versions that cost much less than the other ones. I wonder if they're any good for my purposes. Now if there was a white TryAll Stiky available anywhere I think I'd give it a go.

Smilymarco · 2010-03-07, 04:55 PM

Like this?
http://fstatic1.mtb-news.de/img/phot...e/DSC01298.JPG

You can even safe a little more weight when making the square holes bigger.

munirocks · 2010-03-07, 05:20 PM

Haha, that's extreme. Na, I'll just keep my rim the way it is. It's light enough like that, I think.

saskatchewanian · 2010-03-07, 05:24 PM

Quote:

Originally Posted by Smilymarco

Like this?
http://fstatic1.mtb-news.de/img/phot...e/DSC01298.JPG

You can even safe a little more weight when making the square holes bigger.

square

Think of the stress factors when a rim is being used, That rim is going to loose all its lateral stability and crack at those corners. You could really swiss cheese it with holes in the corners and sidewalls but I would not recommend it.

Shiggy probably has some answers for you when it comes to tires. He ranks right up there with Sheldon Brown in my books. OK he might not be caption bike but he is definitely a tire guru.
http://mtbtires.com/site2/

Max_Dingemans · 2010-03-07, 05:28 PM

Are you still using a downhill tube? I have been using a 26x1.95/2.125 since I got my 26 and it's been at least 4 years since my first and only flat.

I'm also using a Maxxis High Roller 2.5 that I like. It's not great in the snow, but it does well on rocks and through hard and soft singletrack.

Smilymarco · 2010-03-07, 05:49 PM

Quote:

Originally Posted by saskatchewanian

square

Think of the stress factors when a rim is being used, That rim is going to loose all its lateral stability and crack at those corners. You could really swiss cheese it with holes in the corners and sidewalls but I would not recommend it.

It def weakens the rim a lot, but nearly every biketrialsrider is doing that... so it cant be that bad

Saves around 50-80g on a normal 19" rim afaik.

munirocks · 2010-03-07, 07:06 PM

@saskatchewanian: thanks for the link. There's some good information on there. They say the rubber queen 2.4 is fatter than some 2.7 or 2.8ers out there. Interesting.

@max: yes, I've been running a heavy Schwalbe 13D downhill inner tube until now. I'll try some lighter ones for sure.

munirocks · 2010-03-10, 09:47 AM

Well, I'm looking forward to my new order which should be shipped within the next couple of days. So I'll have a choice of light weight cranks, a KH street seat, steel pinned plastic pedals and some new rim tape. It's always great to unbox new uni stuff!

Now I almost ordered a white TryAll too but then I changed my mind again. It might not have been worth the 45€ since I don't know if I'd like it at all...
So now I found some local source offering 3 Gazzaloddi tires, one brand new 3" and 2 used 2.6" for a good price. So I'm getting these instead, I think. Screw the weight

. I could also sell some of them if it turns out I like something else better.

So the most important thing is still missing: the new Schlumpf hub. It's been a solid 3 months without it now but I guess that's life... I live in a house with 14 other people so about every other day there's a guy at the door delivering some sort of package. Needless to say there's always a shimmer of hope that it's for me this time and that it says "Schlumpf Innovations" on the package. Maybe today... I can dream, can't I?

Has anybody been getting their packages from Schlumpf lately? Anybody else still waiting for a replacement like me?

Jap · 2010-03-10, 11:39 AM

The Rubber Queen is a great MUni tyre!

Nurse Ben · 2010-03-10, 04:14 PM

Quote:

The Triton titanium frames wont be significant lighter than KH - but they are much stiffer and therefore you get more power on ground and less for flexing the frame each padel strike...

Not true. Ti is more flexy than aluminum, nearly the same weight, but has more tensile strength (resilience). The gain from switching from KH to ti is not gonna net you much.

Try stripping the KH frame
Fixed seat post, aluminum
Carbon fiber seat
Lose the tire, that's a huge weight penalty!
Nylon pedals
Tensile cranks
Dump the brake

Get a KH Ti hub