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Why do many velos have flat bottoms?

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runcyclexcski View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote runcyclexcski Quote  Post ReplyReply Direct Link To This Post Posted: 30 May 2017 at 11:37pm
Alan, this is essentially identical to the sketch(es) I have! :)
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runcyclexcski View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote runcyclexcski Quote  Post ReplyReply Direct Link To This Post Posted: 30 May 2017 at 11:43pm
Yes, I get now where all these budges come from!

A mould like this would take me ages to make, if ever. That is why a cylinder is what I have sketched up. The front cone/cup: an inflated balloon coated with polyurea to create a mould, then apply fabric+resin and vacuum bag.

The tail: could use the same approach as with the cup, then it would be fully symmetrical, but the taper would not be there. Any other ways to make a taper? I could squeeze the cylinder between two surfaces at an angle, but then it will get squeezed both up and down, like toothpate, doh! :)

I am also looking for ways to make a full ellipsoid, with the distance between F1 and F2 about 2m, 90 cm in diameter.
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GeoffBird View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GeoffBird Quote  Post ReplyReply Direct Link To This Post Posted: 30 May 2017 at 11:47pm
Who's Alan? Big smile
Right Time - Right Place - Wrong Speed
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legs_larry View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote legs_larry Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2017 at 10:22am
Our illustrious chairman, of course. The BHPC is just like the old Soviet Union in that respect; all good ideas are routinely credited to the General Secretary of the Party (and all bad ones to "fascists", "reactionary elements" or the CIA). why do you think I used to refer to the committee as "The Politburo"? Wink
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a bit ov a lyv wyr by slof standirds
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AlanGoodman View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AlanGoodman Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2017 at 1:37pm
LOL

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runcyclexcski View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote runcyclexcski Quote  Post ReplyReply Direct Link To This Post Posted: 01 June 2017 at 6:24pm
I am very sorry, Geoff, this is embarrassing. I read the wrong name, and I do not know everyone's name by heart yet.
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