Chassis2008

=Specifications=

Tubing: 4130 Cromoly, 2" to 1" diameters, longest tube 48.65" Wheelbase: 63" Track: 19"

=Tubing=

For the long main tube: 4130 for tandem bikes (such as 760mm/38.1mm Reynolds 525 part KC111 or True Temper Verus HT part hox2dta-1)


 * http://www.reynoldscycles.co.uk/downloads/PARTLIST.pdf
 * http://www.truetemper.com/performance_tubing/verusht.asp

Aircraft 4130 http://grassrootsaviation.ca/products.htm

Pre fab chassis parts http://www.chassisshop.com/

=A Bit of Design Rational= The 07 chassis is constructed from pieces of aluminum honeycomb glued together. One major problem we had with it was getting bolts torqued in well. Since the bolt head has such low surface area, lower than the cross section of the honeycombs, there was much less force needed to bend the material than an equivalent force spread over the area of a full honeycomb. (That is my theory anyway, -john) Thus, there was an overly gratuitous use of loc-tite on pretty much every important bolt.

How to construct the 08 chassis is still under review. Possibilities include:


 * Chromium molybdenum tubing (a mix of aircraft tubing and bicycle tubing)
 * Integrated body/shell/frame (ala Laval07 and PAC-Car II)