Go Back   EcoModder Forum > EcoModding > DIY / How-to
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-05-2012, 07:22 PM   #11 (permalink)
Master EcoModder
 
christofoo's Avatar
 
Join Date: Mar 2012
Location: Salt Lake City
Posts: 292

00C - '00 Toyota Corolla
90 day: 43.54 mpg (US)
Thanks: 147
Thanked 190 Times in 73 Posts
I have a trunk mounted bike rack - pretty similar form factor to the hitch mount, just different attachment method to the car.

You definitely will get considerably better mileage with the bike on the tail than with the bike on top, even if you don't do a Kammback.

Are you sure you want the Kammback mounted on the rack? I think either car could have a Kammback mounted to the car as a separate item. For the hatchback, the bike probably won't even affect drag, and on the sedan it's probably a pretty small contribution, since it does stick out of the wake a little, but really not very much (the wake on sedans, excluding about the last 5 years of production, is a few inches above the trunk lid, I think). Of course the Kammback provides its own benefit in either case.

If you want it all on the rack you'd have to design it (with plenty of folks here ready to look at your ideas and give you pointers).


Last edited by christofoo; 10-05-2012 at 07:46 PM..
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 04-07-2024, 03:53 PM   #12 (permalink)
aero guerrilla
 
Piwoslaw's Avatar
 
Join Date: Oct 2008
Location: Warsaw, Poland
Posts: 3,699

Svietlana II - '13 Peugeot 308SW e-HDI 6sp
90 day: 58.1 mpg (US)
Thanks: 1,273
Thanked 730 Times in 463 Posts
I'll just brutally resurrect this long-necroed thread.

When our 3 person family travels, we fit the bikes inside the car to minimize aero drag:

But this configuration is quite demanding on time/ease of packing and unpacking, and while travelling we would like to sometimes quickly have access to the bikes for a short ride, but resign from this due to the hassle.

We do not want the fuel penalty of a roof rack, so most likely I will invest in a hitch and then a hitch-mounted bike rack. But I am afraid that even then the parts of the bike sticking out the sides (and possibly the top) will mess up the aero
This pic that freebeard posted:

and this random pic:

only confirm my doubts

So back to the original question: Can the bikes be made to fit:
  1. inside of the wake of the rear of our stationwagon?
  2. inside of the reduced wake of a Kammback?
Or is hiding the frame in the wake, but still getting the penalty of the wheels sticking out on the sides, the best compromise I can expect?

Two thoughts I had were:
  1. a rack where the bikes are oriented in forward direction. This would be very long, and hitch-mounted racks cannot extend more than 1 meter, iirc, so out of the question.
  2. taking off the wheels (maybe only front wheels) to make the bikes shorter and lower.

Any ideas, comments?

Or maybe in the years since this was originally posted someone has some practical experience?
Attached Thumbnails
Click image for larger version

Name:	Resized_20190816_192555_3193.jpg
Views:	19
Size:	85.5 KB
ID:	34653  
__________________
e·co·mod·ding: the art of turning vehicles into what they should be

What matters is where you're going, not how fast.

"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell


[Old] Piwoslaw's Peugeot 307sw modding thread
  Reply With Quote
The Following 2 Users Say Thank You to Piwoslaw For This Useful Post:
aerohead (04-13-2024), freebeard (04-07-2024)
Old 04-07-2024, 06:41 PM   #13 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,659
Thanks: 7,765
Thanked 8,575 Times in 7,061 Posts
Thanks for the repost. That's the World's shortest stop sign. The car needs work and the bike is in pieces. Here's the earlier combo, with a roof rack:



And the Bug Bearer rack before I made custom bumper mounting brackets.



A folding bike hung wheels down on the rack would fit inside a Kammback.

It depends on the car, and depends on the bike. I cherry-picked an example article: flatbike.com/how-to-haul-bikes-with-a-car/

Number four:
Quote:
4. The bike-friendly car.
Generally, we don’t buy an entire car just to carry a bike. Not explicitly, anyway. We buy a car that matches our lifestyle that includes biking, doing lots of fun outdoor stuff, and hauling all those things related to biking, after researching and verifying that our bikes fit.

So yeah, we’re really doing this–buying a $30K car as an accessory for a $2K bike.
Then they go on to making the bike fit the car.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
.
.
"We're deeply sorry." -- Pfizer
  Reply With Quote
The Following User Says Thank You to freebeard For This Useful Post:
Piwoslaw (04-08-2024)
Old 04-08-2024, 12:38 PM   #14 (permalink)
Somewhat crazed
 
Piotrsko's Avatar
 
Join Date: Sep 2013
Location: 1826 miles WSW of Normal
Posts: 4,061
Thanks: 467
Thanked 1,111 Times in 980 Posts
Expect that modern times have produced exceptions, I used a folding bike that was hand carry-able AKA: steyer puch "cobra" that was suitcase size folded. Have seen electric assist cargo bikes capable today that collapse to that size and it wouldn't take much to fair it into the turbulent area.

__________________
casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
  Reply With Quote
The Following User Says Thank You to Piotrsko For This Useful Post:
aerohead (04-13-2024)
Reply  Post New Thread






Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com