Post reserved for final performance results, and parts list...
Edit: for those who are happy with 21-MPH (33-kph) I am now recommending the 63-64-280kV motor using 6S (22V) with a 1.25" roller, actual performance soon to be seen...
The parts that will take the longest to arrive are the Hobby King RC components from China. I made a list of parts I like, and optional parts that are acceptable. Then I was careful to only order parts that were in stock. If there is a specific part you're set on using (thats temporarily out of stock), where you don't want to spec an optional component, make that part a separate order. That way, HK won't hold back the rest of the parts waiting several weeks for the shorted part to arrive before shipping everything.
After performance testing results, I may end up wishing I'd used a different component than some of these (edit: I have), but here's whats on its way from China to get me started...(the charger requires a power supply, they can usually be purchased locally with an input from house current, or, 12V-automobile socket for RC charging in the field, or both)
Tax and shipping costs are not listed, as they can vary widely depending on your location, Prices listed are in USD on the day I purchased items (subject to change)
MOTOR, Turnigy 63-64-280, 10mm shaft, additional skirt bearing, $44http://www.hobbycity.com/hobbyking/store/uh_viewItem.asp?idProduct=2097
CONTROLLER (ESC), Turnigy 85A, 1S-6S, Built-in BEC to power 5V servo tester as a throttle. $37http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=10331
CAPACITORS, 50V 1000ÂµF low ESR capacitors, Panasonic part # EEUFM1H102, Digikey stock # P12393-ND, $1.40eachhttp://endless-sphere.com/forums/viewtopic.php?f=28&t=20961&p=316135#p316135http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=P12393-ND
BATTERY, Turnigy 6S (22.2V), 30C, 5000mAh, $76http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9518&Product_Name=Turnigy_5000mAh_6S_30C_Lipo_Pack
CHARGER, Turnigy 7A charger for 1S-6S, balances cells during charging, 10V-18V input, $33 http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=11341
CHARGER (OPTIONAL) US supplier in Ohio, only 1.5A slow-charge, but simple interface.http://www.batteryspace.com/smartcharger15afor222vli-ionpolymerrechargeablebatterypack.aspx
BATTERY VOLTAGE MONITOR, wireless, Constant read-out of all 6 individual cell voltages, Red LED lights when lowest cell hits 3.6V, $30http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=7215
THROTTLE (servo-tester being used as a throttle), $15http://www.esky-heli.com/esky-esky-servo-adjuster-tester-ek20907-000504-p-1532.html
Optional servo-tester, $6http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=8296
SHAFT BEARINGS, 1/2" inside diameter, flanged edge, I use two of them, arrived in mailbox less than 5 days in an envelope, $7 eachhttp://www.vxb.com/page/bearings/PROD/Kit7578
FREEWHEEL CLUTCH-BEARING, I use two of them, they slide onto a 1/2" shaft, arrived in mailbox less than 5 days in an envelope, $10 eachhttp://www.vxb.com/page/bearings/PROD/Kit8658
SHAFT, 1/2" diameter, case-hardened, available off-the-shelf in one-inch increments, arrived in mailbox less than 5 days in an envelope, less than $10 eahttp://www.mcmaster.com/#catalog/116/1058/=8sk0ir