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Bolt thru bollox

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midschooljon:

--- Quote from: Ron '2elliot' Burgundy on September 09, 2012, 09:30 PM ---
What part of the set up made you impressed?

I've never tried a 20mm set up, but I can't see how it would be a big improvement over a high quality wheel build using a modern high pressure race tyre in a rigid fork.

--- End quote ---

The lack of flex is noticeable. When balancing on the gate it almost feels harder to balance because its so much stiffer. Im not the best at balancing on a gate so have a bit of bar wobble if I have to sit there for a while. The little flex I do have in the front end means the front wheel stays in the same spot even if my bars flex left and right a little. On the bike I rode the stiffer front meant my front wheel was shifting on the gate when on my bike it normally wouldn't have. Im sure if you are a seasoned racer this isnt an issue, but for me you could feel the effect of the stiffness. Same thing in the corders, you point the bike and it goes. There was very little give.

Im not an engineer so wont pretend that I can give you a scientific explination.  :LolLolLolLol: But you can feel it when you ride it.

I cant recall the bars. It was a Intense bike with what looked like mostly Sinz parts on it, but I would be guessing if I told you what brand or model the bars were.

ron burgundy:
Sounds interesting. What are you comparing the set up against?

It seems like it's a buy it and and try it, but pointless if you don't run a stiff set up to start with. I can't see it having an effect on my 125r.

gossa:
Hmm, this is an interesting one, possibly a bit of placebo going on with it to. No doubt that it is stiffer but I'm struggling to see how it can be any stiffer to be noticeable when there is zero noticeable flex in a decent fork/hub set up. It doesn't matter if it's 20% stiffer if the extra 20% is in a lab test, there's no tangible benefit to the rider?

On comments ref wheels, I doubt we will see BMX frames going to 135mm dropouts, you only need that width for the multitude of gears found on MTB's and they would have to splay out radically along the stay to avoid 180mm crank interference.

I'm off to Interbike in Vegas on Saturday so I'll see if I can ride some bikes and feed back.

midschooljon:

--- Quote from: Ron '2elliot' Burgundy on September 09, 2012, 10:03 PM ---Sounds interesting. What are you comparing the set up against?

It seems like it's a buy it and and try it, but pointless if you don't run a stiff set up to start with. I can't see it having an effect on my 125r.

--- End quote ---

Of course the difference one feels will be relative to their own bike.  :daumenhoch: Im running ODSY race forks, S&M stem, S&M bars. Best bet for you is give it a try and see how you like it. If you dont then no need to spend any money.  :)


--- Quote from: gossa on September 09, 2012, 10:18 PM ---On comments ref wheels, I doubt we will see BMX frames going to 135mm dropouts, you only need that width for the multitude of gears found on MTB's and they would have to splay out radically along the stay to avoid 180mm crank interference.

--- End quote ---

I could be wrong, but I was under the impression Rinderknech rode a 135 back end BMC at the olympics. Certainly looks that way from this pic. There are a few other pics floating around the web that also suggest a wider back end, but like I said Im just going off my observations and havent seen any literature on the bike he rode.  :daumenhoch:

gossa:
I walked past that bike last week at Eurobike in Germany, I should have had a gander!

Adding 25mm at the dropouts would have to make the stays flare out as I said and that'll be a nightmare for crank clearance. I'll see if that bike is at Interbike and have a proper look.

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