Sliding in Light snow
12-29-2010, 11:51 AM
#43
takin care of Business in
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^^^i think the OP forgot the tires and went looking for a webcam 
12-29-2010, 07:25 PM
#46
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I hesitate to get into the middle of this...
If turning in snow without any power applied, I would expect some degree of sliding at all but the slowest speeds. Application of a little bit of accelerator can result in a smooth turn for a car with the RLs capabilities.My "other" car is a Volvo XC70 with OEM all-season tires. That car is a champ in the snow. For those familar with downtown Boston, parallel parking in Beacon Hill in the winter was a cinch, regardless of whether the spot had been cleared, plowed in, etc.
I took the RL for a spin in our recent blizzard and it performed well. A great test of a car's snow ability is to come to a dead stop in the middle of a somewhat steep incline. I did this on an unplowed road with about 4" of snow on it and was able to get up the hill easily. Significant slippage only occurred if I stomped the accelerator, and even then there wasn't the side-to-side (yawing?) that you'd normally see.
Regarding other discussion in this thread -- while taking hard turns with the foot off the accelerator, I have observed power applied only to outside rear wheel on the MID.
If turning in snow without any power applied, I would expect some degree of sliding at all but the slowest speeds. Application of a little bit of accelerator can result in a smooth turn for a car with the RLs capabilities.My "other" car is a Volvo XC70 with OEM all-season tires. That car is a champ in the snow. For those familar with downtown Boston, parallel parking in Beacon Hill in the winter was a cinch, regardless of whether the spot had been cleared, plowed in, etc.
I took the RL for a spin in our recent blizzard and it performed well. A great test of a car's snow ability is to come to a dead stop in the middle of a somewhat steep incline. I did this on an unplowed road with about 4" of snow on it and was able to get up the hill easily. Significant slippage only occurred if I stomped the accelerator, and even then there wasn't the side-to-side (yawing?) that you'd normally see.
Regarding other discussion in this thread -- while taking hard turns with the foot off the accelerator, I have observed power applied only to outside rear wheel on the MID.
12-29-2010, 07:30 PM
#47
hm, I guess I have to revisit the hard turns accelerator off and see what my car does, I was really sure that I saw 0 movement in power when the pedal isn't pushed but if more than one person thinks they saw it...worth another go.
12-29-2010, 08:39 PM
#50
Missing my
12-29-2010, 09:00 PM
#51
12-30-2010, 07:50 AM
#54
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Just in case I was having a phantom memory when I posted my observations, I tested this out on the way home last night and rolled through an S-Curve with my foot not on the accelerator and was able to confirm my observation. You do have to be carrying a bit of speed, but not too much to see it happen. This is also in an '05 RL if that makes a difference.
12-30-2010, 08:13 AM
#55
Just in case I was having a phantom memory when I posted my observations, I tested this out on the way home last night and rolled through an S-Curve with my foot not on the accelerator and was able to confirm my observation. You do have to be carrying a bit of speed, but not too much to see it happen. This is also in an '05 RL if that makes a difference.
12-30-2010, 04:45 PM
#56
well, I tested the turn in and I saw 1 extra bar on the outside tire with no gas applied, so I guess Tampa was right after all :swoon:
If I had to guess, all prior times I was also applying brakes which, unlike toyotas, override power.
To Tampa and all other testers, GOOD JOB!
If I had to guess, all prior times I was also applying brakes which, unlike toyotas, override power.
To Tampa and all other testers, GOOD JOB!
12-30-2010, 09:25 PM
#57
68k miles, 4 cleveland winters (eastside ) over 100" of snow a year, 60 mile daily commute.
2006 RL with Pilot A/S priceless.
IMO the RL is the most secure, confidence inspiring and safe vehicle I have ever driven in the snow. The tires make the difference. Snow tires even more so, the OEM are very poor.
2006 RL with Pilot A/S priceless.
IMO the RL is the most secure, confidence inspiring and safe vehicle I have ever driven in the snow. The tires make the difference. Snow tires even more so, the OEM are very poor.
12-30-2010, 11:04 PM
#58
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I'm guessing the extra bar to the outside signified that the outside wheel was spinning faster, which is what you'd expect. If you get the chance, take note of any change when going around a wide sweeper, and compare it to going around a tight corner. I bet you'll get more bars to the outside when going around a tighter corner, because the difference in wheel speed would theoretically be better.
The bars don't tell you how much power is being applied to the wheels when going around a corner, because there is no power being applied from the car.
The bars don't tell you how much power is being applied to the wheels when going around a corner, because there is no power being applied from the car.
12-30-2010, 11:20 PM
#59
well, with the pedal off the gas, you're applying no power, but I guess the car adds power to outside wheel to push you into the turn. I see no other explanation for displaying power when you're applying none.
12-31-2010, 06:24 AM
#60
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It would be VERY dangerous, not to mention illegal, for a car to be developed to provide power/torque to the wheels when none is requested. See if you notice any increase in revs, or if the car feels like it's adding power. I doubt it.
12-31-2010, 08:59 AM
#61
As I said, on a 5 bar meter, I could not get more than 1 bar to show up to the outside wheel.
it's all steering input based so I don't think it's dangerous and actually helpful as it's actually not speeding up the car but rotating it. Hitting the brake pedal overrides any power from the engine.
12-31-2010, 11:09 AM
#62
Safety Car
Remember the acceleration device, unique to the RL. This device is essentially a third set of planetary gears, sort of half a rear differential, that always, and variably overdrives the rear wheels, with respect to the front wheels.
Acura is a little sketchy on the specifcs, but the variability is within a 5% range. Every other SH-AWD implementation is a fixed 1.7% overdrive. Going through brochures, AcuraNews and HondaNews technical releases and car magazine articles, the information for the RL is inconsistent, some saying 0-5%, some saying 1.7 to 6.7%, some saying 1% to 6% overdrive variability.
Nevertheless, I believe you are seeing this in action when you observe these power meter readings. For example, anytime you coast, especially downhill, you have power meter showing both rear wheels supplying torque to stabilize the car, which I liken it to a little drogue 'chute. Similarly, as people are finally noticing, on a steep downhill turn, such as an on or off ramp, you will see torque shunted to the outside rear wheel to help stabilize the car and assist in rotating around the corner.
Happy New Year!
Acura is a little sketchy on the specifcs, but the variability is within a 5% range. Every other SH-AWD implementation is a fixed 1.7% overdrive. Going through brochures, AcuraNews and HondaNews technical releases and car magazine articles, the information for the RL is inconsistent, some saying 0-5%, some saying 1.7 to 6.7%, some saying 1% to 6% overdrive variability.
Nevertheless, I believe you are seeing this in action when you observe these power meter readings. For example, anytime you coast, especially downhill, you have power meter showing both rear wheels supplying torque to stabilize the car, which I liken it to a little drogue 'chute. Similarly, as people are finally noticing, on a steep downhill turn, such as an on or off ramp, you will see torque shunted to the outside rear wheel to help stabilize the car and assist in rotating around the corner.
Happy New Year!
01-01-2011, 12:18 PM
#63
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This has been an interesting thread.
Wouldn't it be true that the MID is showing torque supplied to the wheels and is not indicating wheel speed or velocity? I always thought that keeping the wheel speed appropriate to the track (the outer wheel travels a slightly longer path as a result of larger turn diameter) was the job of the differential and the unique feature of SHAWD was applying higher torque to the outer rear wheel to overcome understeer.
Wouldn't it be true that the MID is showing torque supplied to the wheels and is not indicating wheel speed or velocity? I always thought that keeping the wheel speed appropriate to the track (the outer wheel travels a slightly longer path as a result of larger turn diameter) was the job of the differential and the unique feature of SHAWD was applying higher torque to the outer rear wheel to overcome understeer.
01-02-2011, 04:45 AM
#64
new wheels = old school
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i like how 037 has explained that Tampa was correct since he saw a bar without being on the gas pedal.
also, you're incorrect on how the bars work Aman. it has nothing to do with how fast the wheel is spinning. it shows where power is being applied. think about it, when i floor my RL and the bars are showing rear bias, are my rear wheels spinning faster than the fronts? no. it's just showing that more power is being applied to the rear than the front.
and just like 037 said "it's all steering input based so I don't think it's dangerous and actually helpful as it's actually not speeding up the car but rotating it. Hitting the brake pedal overrides any power from the engine."
^ i couldn't agree with you anymore on this statement 037.
reading Tampa's posts in this thread shows he's done his homework. not to defend him, but i can see where he's getting fed up on the forums.
now let's all just be happy and have a nice new year!
also, you're incorrect on how the bars work Aman. it has nothing to do with how fast the wheel is spinning. it shows where power is being applied. think about it, when i floor my RL and the bars are showing rear bias, are my rear wheels spinning faster than the fronts? no. it's just showing that more power is being applied to the rear than the front.
and just like 037 said "it's all steering input based so I don't think it's dangerous and actually helpful as it's actually not speeding up the car but rotating it. Hitting the brake pedal overrides any power from the engine."
^ i couldn't agree with you anymore on this statement 037.
reading Tampa's posts in this thread shows he's done his homework. not to defend him, but i can see where he's getting fed up on the forums.
now let's all just be happy and have a nice new year!
Last edited by brado; 01-02-2011 at 04:47 AM.
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