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Old 08-18-2018, 07:03 AM   #1
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Default Dangerous high winds???

Have you ever had to pull over and wait for high winds??

We never have, but, we've come close.....on a recent trip through the Las Vegas area..the winds on Interstate 15 were pushing us around and it was difficult to control... And I had to slow down and proceed in the right hand lane.....

Don't actually remember what the wind speed was .... and even with the electronic stability control....it was enough to get my attention......

What's your experience with winds ranging from 20 to 30 MPH??

Next time I'll make a note about the windspeed... Let me know if you have some experience with this....
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Old 08-18-2018, 12:41 PM   #2
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20-30mph winds don't have a big effect on us, and wouldn't appreciably slow us down from freeway speeds of 72mph and two lane of 60+mph. We have been in winds of over 50mph coming out of the mountains from Yellowstone toward Denver on a two lane highway and were driving 50-55mph most of the time. They had all the high wind warning signs up for 70+mph winds in the canyons. There was a fifth wheel on the side of the road with a window blown out and an almost new class C a few miles later that had most of the rubber roof blown off.


We drove to our planned destination that day and didn't stop early, although the campground we were in was nearly full when we got there with folks that had pulled off because of the wind, so we barely got a campsite.


It was interesting that when semi trucks were coming towards us, the air ride cabs were leaned way over so noticeably tilted as they approached. We could also read the writing on the sides of semis in front of us because the wind was dogtracking them so badly.


The Scanguage did give us a 36mpg average for about 1/2 hour on the only stretch that we had a good tailwind and flat road.


I will say that the winds out west are not as irritating as the same wind speed is around here in Minnesota and Wisconsin as the western topography is pretty flat and with few trees. This gives a more constant pushing wind than we get here, where there tends to be large gusts hitting the van due to breaks in the treeline, hills, etc
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Old 08-18-2018, 03:10 PM   #3
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Default Are you talking about 50 MPH winds hitting the side your vehicle??

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20-30mph winds don't have a big effect on us, and wouldn't appreciably slow us down from freeway speeds of 72mph and two lane of 60+mph. We have been in winds of over 50mph coming out of the mountains from Yellowstone toward Denver on a two lane highway and were driving 50-55mph most of the time. They had all the high wind warning signs up for 70+mph winds in the canyons. There was a fifth wheel on the side of the road with a window blown out and an almost new class C a few miles later that had most of the rubber roof blown off.


We drove to our planned destination that day and didn't stop early, although the campground we were in was nearly full when we got there with folks that had pulled off because of the wind, so we barely got a campsite.


It was interesting that when semi trucks were coming towards us, the air ride cabs were leaned way over so noticeably tilted as they approached. We could also read the writing on the sides of semis in front of us because the wind was dogtracking them so badly.


The Scanguage did give us a 36mpg average for about 1/2 hour on the only stretch that we had a good tailwind and flat road.


I will say that the winds out west are not as irritating as the same wind speed is around here in Minnesota and Wisconsin as the western topography is pretty flat and with few trees. This gives a more constant pushing wind than we get here, where there tends to be large gusts hitting the van due to breaks in the treeline, hills, etc
You're driving 60 plus MPH forward with a 50 MPH wind coming from the side across the van ?

What modifications did you make in order to do that? OR ...if you didn't make any let me know as well.

You have a Mercedes Benz Sprinter? Correct?

Like I said, we've been in some gusty winds and I didn't know the actual speed but it was enough for me to be a little concerned......

50 MPH.. sounds like a virtual wind tunnel to me...if I knew it was 50 MPH I might not have tried it at all.... even in my car?? And my car is extremely aerodynamic compared to an almost 10 foot high Sprinter....
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Old 08-18-2018, 03:34 PM   #4
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Quote:
Originally Posted by Roadtrek Adventuous RS1 View Post
You're driving 60 plus MPH forward with a 50 MPH wind coming from the side across the van ?

What modifications did you make in order to do that? OR ...if you didn't make any let me know as well.

You have a Mercedes Benz Sprinter? Correct?

Like I said, we've been in some gusty winds and I didn't know the actual speed but it was enough for me to be a little concerned......

50 MPH.. sounds like a virtual wind tunnel to me...if I knew it was 50 MPH I might not have tried it at all.... even in my car?? And my car is extremely aerodynamic compared to an almost 10 foot high Sprinter....

We have an 07 Roadtrek C190P on a Chevy. It has been tweaked for handling and drives very, very, well in poor conditions. The whole thing was setup to have very little oversteer and very responsive steering, giving very small steering wheel movements to correct line. If the steering wheel movements get much larger, huge winds like we say make it so you don't have time to make enough correction because the steering wheel has to be moved so far.



Modifications:


"Normal" lift of about 2" with new front springs and rear airbags with separate controls


1.375" rear swaybar


Slightly smaller than stock front sway bar


Bilstein shocks


Oversized tires at 265-75-16 all around-Michelin LTX MS2s at 62psi front and 76psi rear.


Correct offset wheels .5" wider than stock to handle wider tires



Front end alignment to our chosen specs within the GM given range


The winds were mostly side to side/rear except for the mentioned section that was nearly pure rear. Open terrain for the most part, so not horrible gusting. We saw quite a few semis, with some very good drivers I think, but only a couple of RVs of any type, and they were going slowly. The folks in the campgrounds with trailers said it was really hazardous for them, and they were on the 4 lane. Our whole day was on the two lane.



This was, far and away, the windiest we had ever been in, but it was interesting. It was quite the day, as earlier we had climbed up a foggy mountain on the two lane to a pass where it was lightly snowing, and then went down the other side and found the all the wind.


I would do the same drive again, wind or no wind, as the road was decent and the scenery very nice along that route.
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Old 08-18-2018, 03:45 PM   #5
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Default Modifications....

Quote:
Originally Posted by booster View Post
We have an 07 Roadtrek C190P on a Chevy. It has been tweaked for handling and drives very, very, well in poor conditions. The whole thing was setup to have very little oversteer and very responsive steering, giving very small steering wheel movements to correct line. If the steering wheel movements get much larger, huge winds like we say make it so you don't have time to make enough correction because the steering wheel has to be moved so far.



Modifications:


"Normal" lift of about 2" with new front springs and rear airbags with separate controls


1.375" rear swaybar


Slightly smaller than stock front sway bar


Bilstein shocks


Oversized tires at 265-75-16 all around-Michelin LTX MS2s at 62psi front and 76psi rear.


Correct offset wheels .5" wider than stock to handle wider tires



Front end alignment to our chosen specs within the GM given range


The winds were mostly side to side/rear except for the mentioned section that was nearly pure rear. Open terrain for the most part, so not horrible gusting. We saw quite a few semis, with some very good drivers I think, but only a couple of RVs of any type, and they were going slowly. The folks in the campgrounds with trailers said it was really hazardous for them, and they were on the 4 lane. Our whole day was on the two lane.



This was, far and away, the windiest we had ever been in, but it was interesting. It was quite the day, as earlier we had climbed up a foggy mountain on the two lane to a pass where it was lightly snowing, and then went down the other side and found the all the wind.


I would do the same drive again, wind or no wind, as the road was decent and the scenery very nice along that route.
OK... thanks....

I now have KONI FSD shocks, a Roadmaster anti sway bar and Super Steer Trac Bar on my Sprinter.....no air suspension...

My Sprinter is the 3500 with dual wheels..... we're 9 feet 7 inches tall.....

I think your vehicle is a little wider body than ours and closer to the ground stock...

Also I don't think we can have the "off set " wheels set up... It's a different vehicle ..

I don't think even if I went as far as you did would I want to drive in 50 MPH sidewinds?

I'm NOT putting air suspension on my Sprinter.....way too expensive....
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Old 08-18-2018, 04:04 PM   #6
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My guess would be that a dually might be substantially more of a handful in winds like that because of the inherent understeer they create, but I don't know for sure as I have never driven a dually in those kinds of conditions. I think you have 225 width tires on the front, so you would have substantially less front traction to combat wind push on that end, compared to us with 265 width.


I think the Chevy is about the same width as the newer Sprinters and a couple of inches shorter. RV height is more different because they include the Sprinter roof air while our AC is under the roof. Our wheelbase is 155" so shorter than the 170" Sprinter which should give more directional stability to the Sprinter, but also require more input to make corrections.


Our Chevy has no electronic stability control or wind assist.

Air ride in itself is not going to improve handling AFAIK, just comfort. The air ride systems that do improve handling are likely achieving it by reducing sway with swaybars that match the air ride spring and shock rates properly, and by improving rear axle movements to reduce rear steer issues.
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Old 08-18-2018, 04:13 PM   #7
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Default Tire size

Quote:
Originally Posted by booster View Post
My guess would be that a dually might be substantially more of a handful in winds like that because of the inherent understeer they create, but I don't know for sure as I have never driven a dually in those kinds of conditions. I think you have 225 width tires on the front, so you would have substantially less front traction to combat wind push on that end, compared to us with 265 width.


I think the Chevy is about the same width as the newer Sprinters and a couple of inches shorter. RV height is more different because they include the Sprinter roof air while our AC is under the roof. Our wheelbase is 155" so shorter than the 170" Sprinter which should give more directional stability to the Sprinter, but also require more input to make corrections.


Our Chevy has no electronic stability control or wind assist.

Air ride in itself is not going to improve handling AFAIK, just comfort. The air ride systems that do improve handling are likely achieving it by reducing sway with swaybars that match the air ride spring and shock rates properly, and by improving rear axle movements to reduce rear steer issues.
All of my tires are 215/85 R16.....they are quite different in size....

The dual wheels in the back do provide a lot of stability and of course we can carry more weight than a single wheels set up....

Also, the likelihood of two rear tires blowing out at the same time is practically zero..... plus it gives a lot of stability turning corners.....

But, sounds like the road dynamics of your shorter , closer to the ground in height van is completely different....

We're 23 feet long , 170 inch wheelbase and and 80 inches wide.... plus almost 10 feet tall.
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Old 08-18-2018, 04:15 PM   #8
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Default One more thing...

Quote:
Originally Posted by booster View Post
My guess would be that a dually might be substantially more of a handful in winds like that because of the inherent understeer they create, but I don't know for sure as I have never driven a dually in those kinds of conditions. I think you have 225 width tires on the front, so you would have substantially less front traction to combat wind push on that end, compared to us with 265 width.


I think the Chevy is about the same width as the newer Sprinters and a couple of inches shorter. RV height is more different because they include the Sprinter roof air while our AC is under the roof. Our wheelbase is 155" so shorter than the 170" Sprinter which should give more directional stability to the Sprinter, but also require more input to make corrections.


Our Chevy has no electronic stability control or wind assist.

Air ride in itself is not going to improve handling AFAIK, just comfort. The air ride systems that do improve handling are likely achieving it by reducing sway with swaybars that match the air ride spring and shock rates properly, and by improving rear axle movements to reduce rear steer issues.
We do have electronic stability control...
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Old 08-18-2018, 05:00 PM   #9
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Default Anti sway bar on my 2012 RS Adventurous

Quote:
Originally Posted by booster View Post
My guess would be that a dually might be substantially more of a handful in winds like that because of the inherent understeer they create, but I don't know for sure as I have never driven a dually in those kinds of conditions. I think you have 225 width tires on the front, so you would have substantially less front traction to combat wind push on that end, compared to us with 265 width.


I think the Chevy is about the same width as the newer Sprinters and a couple of inches shorter. RV height is more different because they include the Sprinter roof air while our AC is under the roof. Our wheelbase is 155" so shorter than the 170" Sprinter which should give more directional stability to the Sprinter, but also require more input to make corrections.


Our Chevy has no electronic stability control or wind assist.

Air ride in itself is not going to improve handling AFAIK, just comfort. The air ride systems that do improve handling are likely achieving it by reducing sway with swaybars that match the air ride spring and shock rates properly, and by improving rear axle movements to reduce rear steer issues.
YES, this is the anti sway bar we have ..

1209-120 ROADMASTER REAR SWAY BAR 3500 SPRINTER DODGE & FREIGHTLINER 2008-2017, 1 3/8″ DIAMETER
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Old 08-18-2018, 05:27 PM   #10
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Default Here's a picture of my rig.... it's pretty large...

Quote:
Originally Posted by booster View Post
My guess would be that a dually might be substantially more of a handful in winds like that because of the inherent understeer they create, but I don't know for sure as I have never driven a dually in those kinds of conditions. I think you have 225 width tires on the front, so you would have substantially less front traction to combat wind push on that end, compared to us with 265 width.


I think the Chevy is about the same width as the newer Sprinters and a couple of inches shorter. RV height is more different because they include the Sprinter roof air while our AC is under the roof. Our wheelbase is 155" so shorter than the 170" Sprinter which should give more directional stability to the Sprinter, but also require more input to make corrections.


Our Chevy has no electronic stability control or wind assist.

Air ride in itself is not going to improve handling AFAIK, just comfort. The air ride systems that do improve handling are likely achieving it by reducing sway with swaybars that match the air ride spring and shock rates properly, and by improving rear axle movements to reduce rear steer issues.
Although we have electronic stability control, I don't have wind assist.... that was an enhanced feature on the 2015 models.
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