[python] Re: frame flexibility


-----Original Message-----
From: Dirk Bonne <dirk_bonne@xxxxxxxxxx>
To: python@xxxxxxxxxxxxx
Date: Sun, 12 Dec 2004 13:03:01 +0100
Subject: [python] Re: frame flexibility

> Jürgen Mages wrote:
> > Hi Dirk,
> > 
> > at first glance I would blame this on the 30x10x1 tubing.
> 
> If it were only true! It is 30x10x1.5 :-)
> 
> > Does Torben, who uses the same material has flexing?
> 
> yes, please, test it out!

I have extensive "flexing" from the flevopivot mount to the rear frame 
clip-mounted), so I can't determine if anything else are flexing until that 
is fixed. I would suspect the Dirk's pivot (the flat plates) after seeing 
his weldings (good!). On my bike the rear fork (a pleonasm? The fork!) is 
the weakest point - I'm fixing that with 10*10*1 tubing from dropouts to 
seatmount. I'm going to make a tube that fits the flevoaxel exactly in a 
lathe, and braze it in the rear frame, but maybe I can't eliminate every 
last bit of flexing. I wonder if flevobike have the same problem - I used 
mild steel and the flevo way with enforcements plates : 
http://www.hpv-klub.dk/selvbygger/Flevoracer/e-fr09.gif - the holes in the 
rear frame are bound to be eliptical in time.
 
Cheers' 
Torben

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