Join Date: Jun 2010
Location: NW,Oregon Coast
Mentioned: 29 Post(s)
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Has anyone here who's owned Bromptons with both the old and new hinge types noticed much difference in terms of overall flex?
I have a Mk 2, forged plate hinge, hand brazed fillet ,
and a recent Mk4, cast hinge, machined, inserted tube, brazing penetration between the 2.
I have not noticed significant flex in either, Riding.
nor do I have a test fixture with instrumentation to create the Data
that gives the flex a numerical value.
Which I think is required to have any meaning..
Kg of force , in a given Axis, for a mm of motion.
have you access to a university Mechanical engineering department?
or drop by the Factory in London and see what test facilities they have.
Last edited by fietsbob; 08-16-11 at 09:51 AM.