Hi George,

This thread where we have been identifying where the frame is most
susceptible to failure is an engineering idea. Think of the worst case
and then try to manage that safely. This does not mean that we think a
frame failure is likely, only that we would want to take care in
building any conversion - be aware of what can go wrong so that
appropriate parts are selected. I don't see this as particularly more
expensive than other conversions that have been done. One approach
would be a hi-tensile steel y- frame and steel telescoping forks,
combined with a checklist for regular monitoring.

Best,
John

--- In Cruzbike@yahoogroups.com, "george" <gcsdls@...> wrote:
>
> Thanks Bill and John,
>
> I appreciate your responses. You've given me much to think about.
>
> Since there doesn't seem to be anyone who actually has experience as
> a heavyweight riding on one of these, I'll have to consider whether I
> want to chance building a bike and hoping it won't break under me.
> Even if it breaks slowly enough for me to keep from ending up on the
> ground...still, it will be broken. I guess I can't expect anything
> else. I know it's a little much to expect a frame and seat to hold up
> under me unless I'm willing to lay out lots of cash to make it happen.
>
> Anyway, thanks again! :-)
>
> george
>