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Wind resistance of sidecar

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(@sidewise)
Posts: 105
Estimable Member
 

I'm glad that old trick worked for you. I don't know how much oomph a 650 Burgman has to get you up to interstate speeds the aerodynamics may preclude it but I'd try just a tiny bit more lean-out and see if comfortable at 65-70 mph. Sidecar fiddling is an on going project it took me two years to get my first sidecar to where I thought it was perfect.


 
Posted : April 20, 2014 4:37 am
(@mike-bodisch)
Posts: 239
Reputable Member
 

Thanks all for these posts. I have been having issues with my Enfield G5/Kozi Rocket rig and now I think I see the problem. The car has a really high windshield. Passengers love it but above 50/55 I'm steady pushing it back to the left. I run at 60 regularly and I'm getting a workout. Got to experiment. Will take the windshield off completly and see how it handles. This should also improve MPG, right?

This forum is a great place to learn.


 
Posted : April 23, 2014 5:59 pm
(@pbrowne)
Posts: 49
Trusted Member
Topic starter
 

As far a the adequacy of the Burgman's power as a tug, it's very adequate. Without a sidecar, it will easily top 100. Acceleration and keeping up with traffic is no problem with the sidecar. The CVT seems to manage the power application very well.


 
Posted : April 24, 2014 3:38 am
(@Anonymous)
Posts: 0
 

Avanell's Burgman cruises comfortable at 70-75 on freeway. Car is a Inder Bullet,virtually a Cozy. No problem keeping up with any sane person. J.R. Tex rep BMW cruiser/Hannigan 650 Burgman/Inder working on 96 BMW/Ural.


 
Posted : April 24, 2014 4:16 am
(@mike-bodisch)
Posts: 239
Reputable Member
 

Surprise, surprise. Took the windshield and frame off and ran it up and down the back roads. Steady at 60 MPH and = no noticable difference. This really has me confused.


 
Posted : April 24, 2014 6:12 pm
(@Hack__n)
Posts: 4720
Famed Member
 

Now check your gas mileage at speed with and without the windshield.

Surprise, Surprise !


 
Posted : April 25, 2014 6:51 am
(@mike-bodisch)
Posts: 239
Reputable Member
 

The wife complained about the wind so I put it back on. Am currently getting 62.3 MPG as is. My buddy who helped me set it up thinks I should be able to get 70. Think I'll take the shield back off and try it long enough to get a decent average.


 
Posted : April 28, 2014 5:40 pm
(@pbrowne)
Posts: 49
Trusted Member
Topic starter
 

After cutting my windshield down to 7" from the original 14" I've now got enough fill ups to support a gas mileage assessment. I now get 40 mpg vs. 35 before the cutdown.


 
Posted : May 27, 2014 12:47 pm
(@Anonymous)
Posts: 0
 

I didn't check the mileage but it couldn't have been good last Friday headed to Ellensburg in a strong head wind. Going up Ryegrass on I-90 I was 4th gear most of the time and dropped to 3rd a few times. Lucky to make 50 mph. Thinking I'd make up for lost time when I got to the top and headed down the back side, I was surprised to find out the wind was so strong, I could barely get up to 60 going downhill!! Wind must have been at 40 or 50. Coupled with the fact I've gone back to the taller windshields on both the bike and car... And towing the trailer behind the bike...


 
Posted : May 28, 2014 7:20 am
(@swampfox)
Posts: 1932
Moderator
 

pbrowne - 5/27/2014 5:47 PM

After cutting my windshield down to 7" from the original 14" I've now got enough fill ups to support a gas mileage assessment. I now get 40 mpg vs. 35 before the cutdown.

I'm kinda surprised it low windshield made a 5 mpg difference. I would've guessed more like a couple mpg.


Lee
MB5+TW200+CRF250L+GTV300+INT650
XL883R w/Texas Ranger Sidecar
Zuma 50F + Burgman w/Texas Sidecar<Mrs. SwampFox

 
Posted : May 28, 2014 2:17 pm
(@pbrowne)
Posts: 49
Trusted Member
Topic starter
 

Maybe my riding -- getting used to the sidecar -- contributed as well. I was surprised when I began seeing 39.5 to 40.5. Actually, that's with an odometer that reads 6% lower than actual mileage because I have a device installed to correct the overly optimistic speedometer. The true mpg is 42..4.


 
Posted : May 29, 2014 3:38 am
(@pbrowne)
Posts: 49
Trusted Member
Topic starter
 

Maybe my riding -- getting used to the sidecar -- contributed as well. I was surprised when I began seeing 39.5 to 40.5. Actually, that's with an odometer that reads 6% lower than actual mileage because I have a device installed to correct the overly optimistic speedometer. The true mpg is 42..4.


 
Posted : May 29, 2014 3:38 am
(@pbrowne)
Posts: 49
Trusted Member
Topic starter
 

Maybe my riding -- getting used to the sidecar -- contributed as well. I was surprised when I began seeing 39.5 to 40.5. Actually, that's with an odometer that reads 6% lower than actual mileage because I have a device installed to correct the overly optimistic speedometer. The true mpg is 42..4.


 
Posted : May 29, 2014 3:38 am
(@Fortune)
Posts: 32
Trusted Member
 

Just did 1200 miles from Helena, Montana to Boise Idaho with my 2012 Honda Shadow 750cc Spirit and Velorex 562 sidecar. 70 MPH on the Superslab, except on the uphill side of the mountains. Stayed mostly in 5th gear with an occasional drop to 4th. Cut down most of the windshield and have only a small windbreaker left. Averaged 40 MPG through the entire trip. a month ago I ran from one side of Montana to the other, over a thousand miles. Great ride going East at 70 MPH with 40 to 45 MPG. Going home and fighting stiff headwinds going from East to West at 50 to 60 MPH averaged 33 MPG. Staying on the left lane of the highway she ran straight as an arrow. On the Right lane the rig pulled to the right over 60 MPH. Great rides. Why did I wait so long to get a sidecar?


 
Posted : June 4, 2014 5:50 pm
(@pbrowne)
Posts: 49
Trusted Member
Topic starter
 

Better gas mileage and my Cairn Terrier loves it! I noticed exactly the same as you did on the superslab.


 
Posted : June 5, 2014 4:57 am
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