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25mm triple trees

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Old Apr 19, 2017 | 01:38 PM
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Default 25mm triple trees

Can anyone tell me if 25mm thick triple tree (for wide front sportster convercion), made from aircraft aluminum 2024 T3, is safe? The original narrow triple tree was 31,25mm thick and the iron one that I'm using now is 25mm. Thanks.
 
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Old Apr 19, 2017 | 02:03 PM
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6061 T6 would be better...
 
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Old Apr 21, 2017 | 04:43 AM
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I used that because we make high strentgh constructions in the industry where I work. We use 6061 for medium strentgh constructions.
 
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Old Apr 21, 2017 | 07:10 AM
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T6 is too soft for structural. We use T6 for bent tubing.

As for the OP's question, I don't know. Sorry.
 
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Old Apr 21, 2017 | 08:22 AM
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Originally Posted by cggorman
T6 is too soft for structural. We use T6 for bent tubing.

As for the OP's question, I don't know. Sorry.
cg, I think you'll find that's what triples are typically made from...6061-T6
 
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Old Apr 21, 2017 | 08:30 AM
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Disregard my inane rambling. We're using T0 for our bent tubes. Sorry for the confusion!
 

Last edited by cggorman; Apr 21, 2017 at 08:49 AM.
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Old Apr 21, 2017 | 08:32 AM
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OK, but isn't the OP talking about Trees?...not tubes

How do you interpret the words he used "25mm triple trees" and all the measurements he's given... 25mm & 31.25mm (="31,25mm"...damn foreigners ) into him talking about tubes?


.
 

Last edited by multihdrdr; Apr 21, 2017 at 08:41 AM.
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Old Apr 21, 2017 | 08:43 AM
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Originally Posted by multihdrdr
OK, but isn't the OP talking about Trees?...not tubes

How do you interpret all the measurements (and the words he used "25mm triple trees") he's given... 25mm & 31.25mm (="31,25mm"...damn foreigners ) into him talking about tubes?


.
!!! Holy ****! That makes SO much more sense! For several days, since he first posted, I've been trying to wrap my head around 25mm OD aluminum fork tubes or 25mm wall thickness or 31.25mm wall thickness... I was completely bewildered, but I don't know jack about Sportsters, so I just figured I was uninformed.

I'm an idiot. Pretend I was never here!
 
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Old Apr 21, 2017 | 08:49 AM
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Well typically, someone wouldn't state "25mm triple trees" if they weren't referring to tube size...eg. "39mm triple trees", "41mm triple trees", "49mm triple trees", so that can be a bit misleading

Yeah, the think the smallest diameter tubes HD used (at least in somewhat "recent" times) is 35mm tubes and from ~84/85, it's 39mm


.
 

Last edited by multihdrdr; Apr 21, 2017 at 08:54 AM.
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Old Apr 21, 2017 | 08:51 AM
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2024 is fine in application where 6061-T6 is used.. It has a slightly higher tensile and yield strength. Not as good a corrosion resistance tho.. Using a 25mm tall tree over a 32mm tall one really depends on the design.. You could add say 6mm round the part that grabs the tube radially and have something that is of similar strength as the 32mm tall tree.
 

Last edited by Max Headflow; Apr 21, 2017 at 08:54 AM. Reason: good
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