Who wants some 850mm downtubes?- Mtbr.com
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  1. #1
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    Who wants some 850mm downtubes?

    I think I have concluded that Vari-Wall is never going to make another bike tube. I hope I'm wrong about that, but the signs aren't particularly good.

    As such, I'm thinking about having a run of downtubes made with roughly the following configurations:
    -44.5mm x 1/.7/1 Probably 100/200mm butts to allow use on a variety of frames (ie tandems)
    -38.1 x 1/.7/1 Not sure on butt profile but I'd lean toward generous butts here too.

    They would be just plain jane 4130, presumably made by Fairing (they're the folks who make my fork blades and seat tubes). Cost would be in the $25-30 range I think.

    I'm mostly retired these days so I can go have fun with my wife and kids (and a third kid is coming in August!) so I'm not particularly interested in having a dozen boxes more tubes in my basement for years. So...

    How many people here would be interested in such tubes?

    Feel free to pass this on to interested builders/friends who don't read the forum if you'd like.

    Thanks!

    -Walt

  2. #2
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    What about Nova's 29er 865mm DT?

    https://www.cycle-frames.com/bicycle...6x9-x-865.html

    Aren't super long top tubes kind of scarce? 31.8mm ones that go with today's long FC frames? I got a size "med" designed that has a 650mm top tube (https://www.bikecad.ca/1559762656492).

    Edit: updated bikecad model

  3. #3
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    I'm not super comfortable with 9/6/9 on the type of bike I'd be building with a tube this long, but that is a good option.

    -Walt

  4. #4
    pvd
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    I'd be down for at least 6 (six) 44.5 x 850mm+ tubes.

    Making the butt section longer and bringing the tube to 900mm will help to future proof it. My down tubes are around 800mm now and they may get a little longer.

  5. #5
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    I would take 3 of each just to have in my stash.

  6. #6
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    I'd commit to 4, possibly a couple more.


    Sent from my iPhone using Tapatalk

  7. #7
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    I'll be the dirtbag here and commit to 1 of the 44.5 tubes. I use the Reynolds DZB 38.1 XL tubes if I need a 38.1 option in 850mm.

    I hope you're wrong about Vari-wall, but the signs aren't particularly good.
    Myth Cycles handbuilt bike frames
    Durango, CO
    http://www.mythcycles.com

  8. #8
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    Am I hearing correctly that 44.5 is the popular option here (especially given the existence of the 38.1 Nova tube)?

    -Walt

  9. #9
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    I'll take a 3x of the 44.5's (would also grab a couple of your seat tubes at the same time).

  10. #10
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    wait, you're RETIRED?! Third kid? Whaaat?

    I'm down with 5 of the 44's. I agree with PVD go with 900 and maybe a 250-300mm butt length on one end. Definitely 1/7/1 or 1/7/9.
    There are options in 38mm so i'd say go with the 44 only.

    thanks

  11. #11
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    I'd take 5 please, sounds preferable to the nova, but I'm grateful for that option at least
    andy

  12. #12
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    Quote Originally Posted by Meriwether View Post
    wait, you're RETIRED?! Third kid? Whaaat?

    I'm down with 5 of the 44's. I agree with PVD go with 900 and maybe a 250-300mm butt length on one end. Definitely 1/7/1 or 1/7/9.
    There are options in 38mm so i'd say go with the 44 only.

    thanks
    I'll second the preference for 1/.7/.9 if it's possible and not cost prohibitive. Also, I'll actually commit to 3, these are sounding good.
    Myth Cycles handbuilt bike frames
    Durango, CO
    http://www.mythcycles.com

  13. #13
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    Quote Originally Posted by Meriwether View Post
    wait, you're RETIRED?! Third kid? Whaaat?

    I'm down with 5 of the 44's. I agree with PVD go with 900 and maybe a 250-300mm butt length on one end. Definitely 1/7/1 or 1/7/9.
    There are options in 38mm so i'd say go with the 44 only.

    thanks
    Well, I'm not quitting building. I have just turned it into a part-time/retirement gig where I try to keep it under 20 hours a week. Framebuilding has been very good to me and I still enjoy it, but I have no need or desire to work a ton.

    I just heard from Andy at Strawberry that Reynolds is making this tube (850mm long, 44x1/7/1) so that may obviate the whole idea. Sounds like they expect them to be available in about 2-3 weeks.

    -Walt

  14. #14
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    Came back here to point out the Nova tube which is long but I agree probably too thin/narrow for a frame thatís either going to be used like a frame with a 600mm reach should be, by Andre the Giant, or both.

    OTOH, while practical, 44.5 x 1/.7/1 x 850mm sounds like an instrument used in a framebuilder themed version of Clue.

  15. #15
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    SO, everyone: I have confirmed with Andy that Reynolds is making this tube (the 44mm one in 1/7/1 x 850). He is only, as of now, planning to import a dozen or so with his next shipment.

    If you want him to order more/put you on the list for some, please drop him a line. I'm not going to post his email here for fear of spambots, but here's the contact page for Strawberry:
    Strawberry Cyclesport Inc. Contact Information

    As of now I'm going to skip making any downtubes, as it seems like the need is being filled by Reynolds.

    -Walt

  16. #16
    pvd
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    Dead email.

  17. #17
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    worked for me as he replied already

  18. #18
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    Awesome! Glad to hear these are already going to be made.

    Also glad Reynolds is actually interested in making mountain bike tubes.
    Myth Cycles handbuilt bike frames
    Durango, CO
    http://www.mythcycles.com

  19. #19
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    Reynolds 38 x 1/6/9 x 850 is here! Not sure about the 44mm tube
    https://www.torchandfile.com/REYNOLD...50_p_1230.html

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