There aint no flex in the gear. OK, there must be a little, but the flex in the tires makes any deformation of the vees negligible. If the wood is as strong as sprice then you are OK. I used douglas fir 3/4 inch boards and ripped them the hard way to make 1/4 inch boards. On Sun, 2 Jul 2000 RSONDOG@aol.com wrote: > FlyBaby > > Billy, > > Thanks for the info. I have seen red oak at the hardware store but worried it might be too "hard" (like the poplar) and not have the flexibility necessary for shock-absorption. What do you think? > > Tim H. > > > > ---------------------------------------------------------------------- David E. Munday E-mail: munday@engr.uky.edu Dept. of Mechanical Engineering Web: http://www.engr.uky.edu/~munday 521 CRMS Building Voice: +1 (859) 257-3263 University of Kentucky FAX: +1 (859) 257-3304 Lexington, KY 40506-0108 Office: 202 D. V. Terrell Bldg.