Jan 9
Jan 9, 2005
Drag values
I received some new drag values for a couple of commercial velomobiles today, so I added them to the table along with links to additional information. New additions are the Flevo Versatile and the Mango velomobiles. I also sorted the table from the fastest to the slowest.
What is very surprising is how poor the commercial velomobiles are. By looking at the photos, I would imagine it has quite a bit to do with their width due to fitting the trike wheels into the fairing, and the blunt noses. It is surprising though, that the Rocket seems to have a slightly lower CdA and it’s trike wheels are OUTSIDE the fairing and NOT faired.
If anyone knows of additional CdA values for streamliners, HPVs, recumbents, bikes or velomobiles, please forward the information to me and I’ll add them to this list. Also – if anyone is aware of any incorrect information here, please also let me know.
| HPV Image | Name | CdA sq meters | CdA sq feet | Speed @150 watt output |
 |
Virtual Edge | 0.011 | .118 | 60.8 kph |
 |
Varna Diablo | 0.02 | .215 | 55 kph |
 |
M5 #8 fairing | 0.0255 | .274 | 52.3 kph |
 |
Cheetah | 0.0278 | .299 | 51.5 kph |
 |
Cutting Edge | 0.0286 | .307 | 51.2 kph |
 |
Bean II | 0.0289 | .301 | 51.5 kph |
 |
White Hawk | 0.031 | .324 | 50.7 kph |
 |
Vector Trike | .046 | .5 | 46 kph |
 |
Gold Rush | 0.0465 | .50 | 46 kph |
 |
Barracuda | 0.055 | .592 | 44.4 kph |
 |
John Tetz – Zote Streamliner | .055 | .6 | 44.2 kph |
 |
Quest velomobile | .092 | 1.0 | 37.7 kph |
 |
The Rocket (estimated) |
.11 | 1.18 | 37.5 kph |
 |
Mango | .12 | 1.3 | 36.5 kph |
 |
Mark Olaf Slot – Optima Baron | .147 | 1.58 | 34.7 kph |
 |
Versatile | .176 | 1.9 | 33 kph |
 |
Leitra velomobile | .178 | 1.91 | 33 kph |
 |
DF Racing bike (using aerobars & disk wheels) | 0.23 | 2.4 | 31 kph |
 |
Easy Racer (no fairing) | 0.27 | 2.9 | 29.4 kph |
 |
Sonny Kallehave – High racer | .3 | 3.22 | 28.6 kph |
 |
DF Mountain bike | 0.50 | 5.38 | 24.7 kph |
 |
DF Racing bike (hands on top of bars) | 0.51 | 5.4 | 24.7 kph |
 |
DF Standard bike | 0.68 | 7.3 | 22.6 kph |
All Cr (rolling resistance) set to .0060
Temp = 21 degrees C
Pressure = 30 ” mercury
weight = 230 lbs including rider
TCR Do LIST:
1. Strut slot sliders – Simplify to a folding cover
2. Canopy Bubble – make a sliding convertible top
3. Front wheel well – Make glass version
4. Wingnuts for fairing mounts
5. Electrical – rechargable battery with a panel with switches for rear strobe and front headlight
6 Add a second front caliper brake
7. Make a portable wind trainer using the (mini-rollers)
8. Look into painting the fairing
9. Find a helmet that fits in the bubble
10. Add second brake
| TOTAL distance on TCR1 |
| 866 km |
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