Trials Frame Design Help

unicyclepa said:

the crown is one peace. the lines show fillets. It will be machined out
of a billet of aluminum
ok?

and the aluminum crown will be welded to what material? do you have a
TIG weld machine? they cost A LOT...

and I don`t think a machined crown would be compensatory in a large
scale.

don`t want to put this thing down... it`s just that design about
solving problems. I`m showing you some problems here.

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francisco

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I wonder what the final design, the concept or production form would
look like?? 😕 😄 😄

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Hazmat

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francisco said:

and the aluminum crown will be welded to what material? do you have a
TIG weld machine? they cost A LOT...

I think that if has the access to use a CNC machine for free, then I
have a feeling that he might be able to use a TIG welder as well.

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Blegas78

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Quoted message said:

and the aluminum crown will be welded to what material? do you have a
TIG weld machine? they cost A LOT...

and I don`t think a machined crown would be compensatory in a large
scale.

don`t want to put this thing down... it`s just that design about
solving problems. I`m showing you some problems here.

I have access to a $70,000 cnc and used a 1,000ish $ program to design
it. i know what I am doing, and know people that will weld it for
almost nothing.

The frame was never meant for large scale production. I was planing on
building just 30-40 or enough to cover the material cost

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unicyclepa

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roland said:

Looks like you're going for something like the Pichler Solo - 'Here'
(http://www.pichlerrad.de/de01.htm) but with a different bearing cap
arrangement - one nice feature of the pichler crown is that it is
machined so that there is a lip for the fork legs & seat tube to sit up
against - this means that its easy to align the the fork legs so that
the hub sits square in the bearings and also its harder for the legs to
slip under load or if the bolts should come loose - I'll post some
pictures of mine later if that helps
Roland

Cap the fork legs - against a lip machined into the crown - who'd have
thought of that🙄 ... +1 to Mr Kurt Pichler -

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roland said:

Cap the fork legs - against a lip machined into the crown - who'd have
thought of that🙄 ... +1 to Mr Kurt Pichler -

Well sorrrrry! Party pooper...:p

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bedheadben
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Any luck with finding aluminum oval tubing? I would also like to get
some.

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Blegas78

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I have sent many e mails still with no reply

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unicyclepa

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unicyclepa said:

I have sent many e mails still with no reply

Ok, be sure to let me know if you find anything. I emailed Kris but he
only sources materials in Taiwan, so he has no clue about it in the US.

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Blegas78

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better than nothing, therefore a ham sandwich is better than eternal
happiness.

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