you'r basicly not disagreeing with me will and i think what you say is true as well.at the end of the day the bean counters must be happy.i read that three designs were thrown out for the alfetta and the most expensive solution was used.therefore they must have reached the end of there overbudget.i just wonder what solution they had after the design faults of the guibos (bagels) came to light.i also love the feeling of turning and road manners of this design.a 75 1.8 is my daily driver and i will be installing a 2.0 twinspark shortly.
--- On Tue, 2/2/10, Will Owen <[email protected]> wrote: From: Will Owen <[email protected]> Subject: Subject: Re: [alfa] Those Troublesome Guibos To: "alfa" <[email protected]> Date: Tuesday, February 2, 2010, 1:42 PM Ira Kaufman writes: > i must get that book but off hand i would say the didion setup as is causes the trouble.as we see it is the same problem with the four or six.i suppose a diffrent rear setup instead of that triangle may be the answer. I'm going to have to disagree with that. The single-point mounting of the DeDion's control arms in Ricart's design is not elegant only in its simplicity, but in removing all the basically irreconcilable differences found in any four-arm setup, and any unwanted steering effects as well. Any four-arm design inevitably places torsion loads on the axle whenever there's a side-to-side difference in bump and droop, as does the stock 105 rear axle control setup, which uses a top link with no side-to-side leeway except what's allowed by the rubber bushes. A three-link + lateral locator avoids this problem, but there's still going to be some rear-axle steering. The triangle with pivot at the apex solves all of that, especially with the use of the Watts link to control lateral movement. It's a brilliant design, and reason enough for me to keep my Milano, even if I didn't like anything else about it! And it would absolutely have to be a feature of just about any Alfa-based project car I might contemplate. As for driveline problems, one point of having a chassis-mounted final drive in the first place is to de-couple the suspension from the drivetrain. I think fiscal constraints kept Alfa's engineers from taking full advantage of this; a long torque-tube of sufficient diameter would have been quite expensive for a production sedan, and so they had to keep futzing around with the pieces they had in inventory until they'd made it work well enough. Will Owen -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected] -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
