1. The most important thing about buying a new bike is to make sure it fits. The only way you'll know if the bike is right for you is to size up the bike and make sure that the bike's geometry matches your body's geometry. Ask questions and do some research.
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2. If possible, try to find a shop that will let you demo the bike on real dirt. Five minutes in a parking lot won't cut it. You wouldn't buy a car without a real world test drive, and a bike should be no different.
3. Don't belive the hype. Just because your favorite rider or best friend rides a certain bike, that doesn't mean that's the best one for you. Have an open mind and be realistic about your needs and ability.
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  1. #1
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    tapered fork in a 1.1/8 straight tube?

    hey guys, im new here.

    set my eyes on a fork this season. i dont neceseraly want a tapered fork, but ive found a 2012 RS SID at a great price.
    before i make the transaction i need to get my facts right.
    my bike has a 1.1/8 head tube, and the fork is 1.1/8 to 1.1/5 at the bottom. ive asked my local "mechanics" if i can fit it to my bike and they all said NO... definitely NO. i begged every one of them to help me remove the fork to check out the headsets and the bottom cups... no one offered because "they had the kettle running". (note: ive never removed a fork myself, so im kind of... lacking courage and experience )
    i turned to the forums, and this is what some blokes told me: "yes u can, but u need this kind of bottom cup"
    http://www.hopetech.com/webtop/modul...ETS2011Web.pdf

    also, here are some photos of my head tube (external...if it helps).
    Attached Thumbnails Attached Thumbnails tapered fork in a 1.1/8 straight tube?-20131122_175848.jpg  


  2. #2
    SRAM...Shimano who cares?
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    If the inside diameter of your head tube measures 44mm, yes (It's still a tight squeeze with a 44z and a special headset)....If not- Then no...sorry.

  3. #3
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    It's all dependent on your head tube. model and year frame is that?

  4. #4
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    Can be done with this if you have a 44mm/zero stack head tube:
    Superstar Components - High Spec Parts For Peanuts

  5. #5
    Nouveau Retrogrouch SuperModerator
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    tapered fork in a 1.1/8 straight tube?

    Quote Originally Posted by norther View Post
    hey guys, im new here.

    set my eyes on a fork this season. i dont neceseraly want a tapered fork, but ive found a 2012 RS SID at a great price.
    before i make the transaction i need to get my facts right.
    my bike has a 1.1/8 head tube, and the fork is 1.1/8 to 1.1/5 at the bottom. ive asked my local "mechanics" if i can fit it to my bike and they all said NO... definitely NO. i begged every one of them to help me remove the fork to check out the headsets and the bottom cups... no one offered because "they had the kettle running". (note: ive never removed a fork myself, so im kind of... lacking courage and experience )
    i turned to the forums, and this is what some blokes told me: "yes u can, but u need this kind of bottom cup"
    http://www.hopetech.com/webtop/modul...ETS2011Web.pdf

    also, here are some photos of my head tube (external...if it helps).
    Absolutely NO!
    Your frame is made for 1-1/8" straight steer tube forks and only that type of fork.
    There is no retrofit or workaround to fit a tapered steer tube fork.
    There is no need to pull the fork to check.

    Nothing is a great deal if you can not use it, and you can not use a tapered fork on your frame.
    mtbtires.com
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  6. #6
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    Quote Originally Posted by shiggy View Post
    Absolutely NO!
    So his frame definitely isn't designed for an internal headset?
    Cuz it kinda looks that way to me from the pics...

  7. #7
    Nouveau Retrogrouch SuperModerator
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    tapered fork in a 1.1/8 straight tube?

    Quote Originally Posted by slapheadmofo View Post
    So his frame definitely isn't designed for an internal headset?
    Cuz it kinda looks that way to me from the pics...
    It is an internal headset for a 1-1/8" steer tube. Period. Done. No other options.

    Appears to be integrated (bearing fit directly in the headtube), not Zerostack (pressed in internal cups). 41mm ID.
    mtbtires.com
    The trouble with common sense is it is no longer common

  8. #8
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    Quote Originally Posted by shiggy View Post
    It is an internal headset for a 1-1/8" steer tube. Period. Done. No other options.

    Appears to be integrated (bearing fit directly in the headtube), not Zerostack (pressed in internal cups). 41mm ID.

    There are always other options.

    But just to clarify, it IS possible to use an adapter to go from straight 1 1/8" to tapered if your frame is set up for a 44mm internal type headset. So the answer in general is 'maybe' rather than 'definitely not', at least until you identify your headset type for sure. Personally, I'm not enough of an expert to be positve I can spot the difference between internal and integrated or semi/integrated from a pic.

  9. #9
    Nouveau Retrogrouch SuperModerator
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    tapered fork in a 1.1/8 straight tube?

    Quote Originally Posted by slapheadmofo View Post
    There are always other options.
    Such as wasting your money.



    But just to clarify, it IS possible to use an adapter to go from straight 1 1/8" to tapered if your frame is set up for a 44mm internal type headset. So the answer in general is 'maybe' rather than 'definitely not', at least until you identify your headset type for sure. Personally, I'm not enough of an expert to be positve I can spot the difference between internal and integrated or semi/integrated from a pic.
    Far from good "options", especially on a carbon frame, at best.
    Zerostack cups have a shallower insertion than external cups, so the latter may not fit.
    If the external cup has shallow skirts, it puts more stress on the HT.
    An external cup adds to the fork axle to crown length, changing the frame angles and changing the handling.
    Just get the proper fork.
    mtbtires.com
    The trouble with common sense is it is no longer common

  10. #10
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    Quote Originally Posted by shiggy View Post
    Such as wasting your money.





    Far from good "options", especially on a carbon frame, at best.
    Zerostack cups have a shallower insertion than external cups, so the latter may not fit.
    If the external cup has shallow skirts, it puts more stress on the HT.
    An external cup adds to the fork axle to crown length, changing the frame angles and changing the handling.
    Just get the proper fork.
    Sounds like the whole reason he was looking at the tapered model was that it was a good deal that would save him money.
    And IMO, slightly slackenting the the angles of your typical XC bike is an improvement. 10mm, what's that 1/2 a degree?

    I'm not pushing this as the best way to go, but the fact is that the answer to 'Can I put a tapered fork on an 1 1/8" headtube' is "it depends", not "Absolutely NO!"

  11. #11
    Nouveau Retrogrouch SuperModerator
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    tapered fork in a 1.1/8 straight tube?

    Quote Originally Posted by slapheadmofo View Post
    Sounds like the whole reason he was looking at the tapered model was that it was a good deal that would save him money.
    And IMO, slightly slackenting the the angles of your typical XC bike is an improvement. 10mm, what's that 1/2 a degree?

    I'm not pushing this as the best way to go, but the fact is that the answer to 'Can I put a tapered fork on an 1 1/8" headtube' is "it depends", not "Absolutely NO!"
    Your user name is appropriate. Please do it now.

    Get the proper spec fork (lots of deals out there). No need for a new headset to be purchased or installed.
    mtbtires.com
    The trouble with common sense is it is no longer common

  12. #12
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    Quote Originally Posted by shiggy View Post
    Your user name is appropriate. Please do it now.

    If you're ever within reach, I'll be more than happy to oblige.

  13. #13
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    hey again
    please dont fight over my "problem"

    here are some details i managed to acquire today.
    this is my tube.

    http://i.imgur.com/zjY7psI.jpg
    http://i.imgur.com/boBtllf.jpg

    and i measured it as deep as i could with a caliper, and the figure said 38.4 mm.

    sooo... what do u think?

  14. #14
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    Quote Originally Posted by norther View Post

    and i measured it as deep as i could with a caliper, and the figure said 38.4 mm.

    sooo... what do u think?
    Listen to Shiggy for starters...

  15. #15
    Nouveau Retrogrouch SuperModerator
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    tapered fork in a 1.1/8 straight tube?

    Quote Originally Posted by norther View Post
    hey again
    please dont fight over my "problem"

    here are some details i managed to acquire today.
    this is my tube.

    http://i.imgur.com/zjY7psI.jpg
    http://i.imgur.com/boBtllf.jpg

    and i measured it as deep as i could with a caliper, and the figure said 38.4 mm.

    sooo... what do u think?
    About all I can tell from the new pics is that the top might be a Zerostack. The bottom might be ZS or it may be integrated. What type of bearing was in there?

    What was 38.4mm "deep"?

    I just realized these are top/bottom pics.

    It does seem the frame is aluminum with very ground down welds (and not much penetration).

    The top looks like there were loose (caged?) bearings in there, so likely a cheap ZS headset.

    Possible but not practical to try to use a tapered fork. Need to add the cost of a new headset and installation, and know your handling may change in a manner you may not like.
    Expect it to void your warranty, too.
    mtbtires.com
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  16. #16
    squish, squish in da fish
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    all i could tell is that the frame is def not carbon

  17. #17
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    @fishwrinkle
    lol. u dont say? i know it is ALU, i never wanted a CF bike, nor can afford one . thanx anyway.
    @shiggy 38.4 mm the inside diameter of the head tube. i was saying that i tried to get the caliper as deep as i could cause i wanted to measure the very middle of the tube, but i couldnt. anyhow... at the bottom i only had some seals and a simple ball bearing.
    thanks fo the useful info. i will go for a 2013 reba rl; i know this fork can be found with a straight 1/8. any recommandations on headsets/bottom cups for a Reba?

  18. #18
    squish, squish in da fish
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    lol i was referring to shiggy saying its a carbon in post 9.

  19. #19
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    Norther,

    what kind of bike is that?

  20. #20
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    Quote Originally Posted by norther View Post
    any recommandations on headsets/bottom cups for a Reba?
    Anything wrong with the headset that's on there now?
    If not, all you have to do is pop the crown race off the old fork and install it on the new one, then slap it all back together.

    The diameter you want to measure would be the inside, right at the bottom/top of the headtube rather than in the middle.

    Also, as asked a couple times before - what is the make and model of the bike?

  21. #21
    Big Gulps, Alright!
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    You would need to remove the headset cups to know if using a tapered steerer is possible. As shiggy noted, headset cup insertion depth would be the biggest issue.

  22. #22
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    the frame is B-FORCE. dont know the model and i didn't find anything online about them. the fella i bought it from said they are made in the czech republic. (like that was going impress me or smthing...) i bought it because it was cheap, and because it is a platform on which i can learn ... improve... and improve myself as a "rider". i asked on other forums before about this brand but no one heard of b-force. here are some more pics, if u have better luck finding something about b-force please let me know.
    http://i.imgur.com/yHVJI7E.jpg
    http://i.imgur.com/OOHVn31.jpg
    other than the branding, the frame has "ALU 7005 TRIPLE BUTTED. HYDROFORMED" written on it. and "mtb 26" ... doooh
    the only fact i know, is that it is obvoius they are not some premium, established brand

  23. #23
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    @slapheadmofo
    nothing wrong with the current sets. guess im good to go

  24. #24
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    Norther,

    there is nothing wrong with the type of bike that you have, no need to be apologetic about it. (Seem that way slightly) We're just asking so that we can now more 'about' your bike, so we can help you.

    That being said, I did a quick search and nothing came up about it. However, looking at the pic links, especially the second one, it looks to me that you have an 'internal' headset. There's nothing wrong with just using your current headset with the new fork (straight steerer'd). You just need to remove the crown race from your current fork, and re-install it on the new one.

    If you do want to upgrade your headset, you need to replace it with the same type...which to me looks to be 'internal'. But I'd make sure by going into a shop, and having them literally put their hands on it and see.

  25. #25
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    @johchribs
    thnks for the nice words
    i feel very annoyed `cause i went to three mechanics until someone offered to help me pull the fork out. (and some of them were like "ur bike is too cheap for a new fork"). and i realy want to have it installed before the holidays. so, yeah... i feel a bit akward.

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