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Supa-light Sunn Radical

Discussion in 'Downhill & Freeride' started by mandown, Feb 14, 2008.

  1. mandown

    mandown Poopdeck Repost

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  2. beaverbiker

    beaverbiker Monkey

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    who cares
     
  3. Damo

    Damo Short One Marshmallow

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    I like those bikes.

    A lot.

    Not caring too much about having a bike that light however. I'm happy with the 40ish mark...
     
  4. Orfen

    Orfen Monkey

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    :stosh:

    get off your high horse...
     
  5. mandown

    mandown Poopdeck Repost

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    i found two online pulications that cared enough, and thought the public cared enough to generate articles about it. i'm not saying we put a man on the moon here, just making this available for those who might care.

    as always, i'm amused by those who don't care about a thread, then bump it to the top of the forum with a comment about how little they care.
     
  6. miuan

    miuan Monkey

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    The bike is nice, but you could have posted it in the sub40lb thread instead. If I had the money and reason, I could bring my Morewood to the same weight. I miss both...
     
  7. Uruk-hai

    Uruk-hai Monkey

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    I've been trying to find a picture of the Sunn that Francois Gachet won on in Vail at the '94 Worlds (that this bike is based on, I believe).

    Yeah, pretty sweet bike. Very clean lines.
     
  8. ChrisRobin

    ChrisRobin Turbo Monkey

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    That actually never happened.
     
  9. xy9ine

    xy9ine Turbo Monkey

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    34.14lbs! so sweet. so much carbon & ti goodness. clean guide:

     
  10. mandown

    mandown Poopdeck Repost

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    Thought about it, but it seems like Sub-35 needs it's own thread.

    I'm not saying it did. I'm just saying this isn't as impressive as getting a man on the moon.
     
  11. Sandwich

    Sandwich Pig my fish!
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    does that include kickstand?

    otherwise...eh...what's the limit before bikes become unridable/too fragile to use for longer than a race run? I appreciate the lightness, and an extra 5 lbs from a competitive bike can make a difference in a run, but I remember Nico losing races because he refused to run a proper bashgaurd, which destroyed his chainring and put him out...

    For the sam hill types, then yeah, that bike is impressive. for joe DH rider, people should be striving for more durable, competitive bikes.
     
  12. CBJ

    CBJ Turbo Monkey

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    Good job on the weight saving but the chain guide I don't know. I have seen it smashed up very quickly. Rest of the build sounds good.
     
  13. atwalker6

    atwalker6 Chimp

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    I'd love to take that bike for a run just to see how something that light feels..pretty ridiculous!!
     
  14. boone

    boone Monkey

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    That thing is hot as hell. Glad to see it done!
    Though my fat and poor arse could not ride that thing.
    I would kill those wheels with poor bashing style and the smaller rubber on 5.1s.
    oooooo, not a great choice for me but maybe so for a smooth rider and one who can replace their rims every so often.

    Thanks mandown!
     
  15. jonKranked

    jonKranked Press Button, Receive Stupid

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    for you non-engineering types, a quick breakdown on the design engineer process:

    -prove it can be done (in this case, lightweight, but mad expensive and durability is in question)

    -improve it - fix the problems from the first attempt (this is where you'd address durability)

    -start selling it

    -continue to improve it, drive costs down, help to drive up mass production.


    its all trickle down. eventually we'll all be on bikes in the mid 30lb range or less (granted it might be 2 decades from now).
     
  16. Ian Collins

    Ian Collins Turbo Monkey

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    i'd put a carbon post and some lighter cranks on in lieu of those gay ti spokes.....
     
  17. Jonny5

    Jonny5 Monkey

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    Its a nice bike. But those tyres suck arse. And the mod he has done there looks like its saved maybe 20-40 grams. I'd still guess a gamut to be a lighter guide. In any case he could have saved 200+ grams in the crank choice and put some real tyres on.

    I'd love to know what the ti mods on the forks are. The only heavy thing I can think on the fork is the footnuts?

    Still, rad bike. :)
     
  18. xy9ine

    xy9ine Turbo Monkey

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    i think he's using the hetero silver ti spokes. i've got the flamboyant rainbow ti-dye ones & love them. been using ti spokes for years with nary a problem.
     
  19. -C-

    -C- Monkey

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    I don't understand whats so special about that compared to others.

    There are various other Radicals, Socoms & 224's that are sub 35lbs. Hell any reasonably light frame can be build light & strong. Its not hard.
     
  20. Ian Collins

    Ian Collins Turbo Monkey

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    really?....wow....how much do they save per wheel, and how much do you weigh......i've heard from most people that they aren't worth the strength reduction, and price increase
     
  21. Gex

    Gex Turbo Monkey

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    Looks flexy
     
  22. xy9ine

    xy9ine Turbo Monkey

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    the 2.0 ti spokes weigh ~250g for both wheels. stainless 2.0's are ~450g. db & bladed are less, obviously. the aerolites & cx-rays are much closer (maybe only 30g heavier), but cost nearly the same.

    i'm 165lbs. i hit my fair share of decently big / knarley stuff & have never had a spoke failure (though my light rims do get dented to crap). with a good build, these spokes won't be a problem. are they cost effective? probably not. it's a diminishing return type item; when you've done everything else, like the pretty colors, or have a titanium fetish. that said, i wouldn't pay current retail prices for them; $5 a spoke is just silly.
     
  23. CBJ

    CBJ Turbo Monkey

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    I had a White Industries hubs and the hippie spokes - it did look great.
     
  24. xy9ine

    xy9ine Turbo Monkey

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    sweet. i almost bought a vintage mcmahon ti hardtail with those exact wheels a while back. those big polished hubs were trick stuff.
     
  25. CBJ

    CBJ Turbo Monkey

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    Yes, very nice but no disk of course so they are gone.
     
  26. dhkid

    dhkid Turbo Monkey

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    are those steel chain stays anodized too?
     
  27. PepperJester

    PepperJester Monkey

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    does it come in rootbeer?
     
  28. JohnnyC

    JohnnyC Monkey

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    Did you build the wheels yourself? I've heard they stretch alot and need to be pre-stressed several times (more than stainless spokes) before you can ride them. Makes building a wheel with them take a hell of alot longer
     
  29. al-irl

    al-irl Turbo Monkey

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    Don't dis the tires the Barracudas are great, savage grip easily as good as a high roller super tacky and much better rolling resistance. I admit i was sceptical of them but i just got a radical and it came with those tires as stock so thought I'd give them a try and was plesantly suprissed.

    Ill be trying to get mine to the 36lbs mark, with a few mods it shouldn't be too hard.
     
  30. Bulldog

    Bulldog Turbo Monkey

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    Generally, most people choose to skip over the threads they don't care for. Not like it was titled deceptively.
     
  31. xy9ine

    xy9ine Turbo Monkey

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    yeah, i build them myself. they don't seems to stretch as much as steel when you're pre-stressing, but definitely flex more at a given spoke tension, so getting a feel for the final tension is a bit different. they do however seem to build very stable wheels once they're settled down.
     
  32. S.K.C.

    S.K.C. Turbo Monkey

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    Here's one thing that has me really curious:

    ... a World Cup with crazy Ti internals...?!

    Why...? How much more weight can you save with Ti internals on an air fork?

    That's nuts... interesting though. Wonder how much they shaved off.
     
  33. xy9ine

    xy9ine Turbo Monkey

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    yeah. not really much in inside you could replace for weight savings. i'm assuming just ti bolts. pulling the stickers would probably save more weight.
     
  34. Racerx7734

    Racerx7734 Monkey

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    Thats a nice ride...........I like the 48lb mark......but I weigh 230 so me and lite parts dont get along to well.

    I like that bike though.
     
  35. Dave-B

    Dave-B Chimp

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    You could probably make some ti rebound/compression shafts.
    Are the standard ones steel?
     
  36. miuan

    miuan Monkey

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    there are also carbon cassettes available that can fit under 65 grams total when limited to 7 gears.
     
  37. davep

    davep Turbo Monkey

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    aluminum
     
  38. demo 9

    demo 9 Turbo Monkey

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    could have added an air shock to loose more.

     
  39. - seb

    - seb Turbo Monkey

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    Aye it's light, but I find a coupe of parts choices questionable:

    1) carbon handlebar. I know I know, but I've personally had one snap on me (and no, I didn't over-tighten or have any sharp edges). Aluminium makes me a lot happier.

    2) i-beam saddle: hellishly uncomfortable imho, and I've snapped one of those too. In fact I know lots of people who have snapped them.

    3) 5.1 rims: No thanks, EX823 & CX-rays for me, even if they do weigh a fair bit more. I want to rag it through rock gardens without worrying about my delicate rims.

    4) ti spokes: to be fair I have no first-hand experience of these, but I've always been led to believe that they're too flexy for heavy 26" use?


    Mind you I'm sure if I posted up my spec list there'd be plenty of you who would question some of my components too!

    Good effort to the guy though, 15.5kg is good going.

    Anyone know how much those frames weigh? (Please specify whether your weight is with or without shock).
     
  40. ire

    ire Turbo Monkey

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    I don't understand how anyone could ride that bike. The handlebars look taller than I am