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Old 12-17-2012, 09:17 AM   #76
Strong Bad
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Originally Posted by Turbocelica View Post
Is it a manual transmission?
Yes. Albins 6 speed Sequential Transmission. http://www.albinsgear.com.au/index.php
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Old 12-17-2012, 09:34 AM   #77
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...Sequential Transmission...
Had to look that up--wow, learned something new. Like a motorcycle transmission, using dogs to shift to the next higher or lower gear. Clutchless shifts possible too.
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Old 12-17-2012, 10:11 AM   #78
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Had to look that up--wow, learned something new. Like a motorcycle transmission, using dogs to shift to the next higher or lower gear. Clutchless shifts possible too.
Been around for a long time. In Offroad racing an Albins tranny is commonly linked through a torque converter and NOT through a clutch. You have to start the car in gear and the biggest drawback is you have to shut the car off for going into reverse (off-shift into reverse-start-move back-shut car off-shift into 1st-start car) If you try to shift into first with car running and car stopped it either wont go or it goes and blows the tranny. Likewise with reverse which is the weakest gear in the Albins. The huge advantage is that the torque converter provides a hydraulic damper between the motor and gearbox causing both to last much much longer. However, I digress because Robby uses a clutch. Reverse is still the weak link in an Albins. Drivers say that if you have to use reverse on the race course you already screwed up, so don't get excited and try to jam it into reverse and make things MUCH worse! Clutchless shifts are possible but you need to "blip" the throttle to take the pressure off of the dogs. BTW a tranny like that will set you back about $40K, Robby prolly has 4 or 5 of them in the support trucks.

The really trick trannys are the ones VW used In their Dakar Race Touraegs made by Xtrac. Also sequential, but uses an pneumatic actuator to shift allowing paddle shifters. The system allows a shift in 1/300th of a second, you link it to the ignition system which cuts power for 1/25th of a second and the shift occurs in the middle of all of that lag time.
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Old 12-18-2012, 06:25 AM   #79
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i saw a picture of the VW trans and it looked as if there were auxillary motors attached power steerring and other pumps. i'll have to look it up again. I saw in Racecar Engineering Mag 05-06
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Old 12-18-2012, 11:17 AM   #80
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Originally Posted by larryboy View Post
Picture of the 2012 car shows the air tank and compressor in the center behind the console:


I'd imagine that there are more air tanks in other places on the rig.
ISTR someone suggesting last year that all the spare wheels were plumbed in to the system to act as a reservoir.
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Old 12-19-2012, 02:11 PM   #81
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Originally Posted by larryboy View Post
Oh yeah, that's right.

Like my new avatar? It's the artwork off Robby's 2013 Dakar helmet.
Is that an angry spray paint can or something? Maybe a pissed off Drakkar for Dakar?

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Old 12-19-2012, 04:45 PM   #82
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nice article

http://www.race-dezert.com/home/robb...lly-37211.html
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Old 12-19-2012, 08:16 PM   #83
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Originally Posted by Strong Bad View Post
...The really trick trannys are the ones VW used In their Dakar Race Touraegs made by Xtrac...you link it to the ignition system which cuts power for 1/25th of a second and the shift occurs in the middle of all of that lag time...
Uh, ignition system in a diesel? I know what you mean, but...

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Old 12-20-2012, 01:16 AM   #84
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Originally Posted by frank wheelbarrow View Post
He's pretty clear this is his last year at Dakar. Hope he does well.
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Old 12-20-2012, 05:05 AM   #85
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These two clips have the bad boy of the Dakar, Robby Gordon in action and he is back in the Dakar this year. Talk about a competitor, clearly his American Built V8 Hummer was superior to everything else. He stopped to help his teammate in two stages, flipped end over end in one and then made a bad decision on a full trailside repair of a bad hub that cost him too much time.

This is clip is just like the bully on the beach that kicks sand in the face of the opponent. I think Peterhansel the frenchman who eventually won was so pissed that is why he went to the french authorities and complained that Robby was ‘too fast’. Take that you little Mini Cooper driving b*i&$th !!! “Minis are for girls” He He

http://www.youtube.com/watch?v=70LYe...endscreen&NR=1

so they inspected his truck and disqualified him for a technicality and he drove under protest so he was allowed to continue and the next day he kicked everyones tail and after crossing the finish line for the stage, went up to the french team and told them to kiss his *&X!!

http://www.youtube.com/watch?v=pVFdgttin6E


Here is his previous years truck. Navigator didn’t do his job so he missed the turn, flips over and lands on his wheels. Gets out, checks out the truck and drives off like nothing ever happened. Listen to that V8 800HP. Rolling didn’t even damage it.

http://www.youtube.com/watch?v=iOy3R...eature=related




What you really need to do is see the clips of him barreling straight down Iquique, largest sand dune in the world. They say he was about 135MPH at this point and Johnny Campbell, his codriver and like 11 time winner of the Baja 1000 said it was the most terrifying thing he has ever done:


http://www.youtube.com/watch?v=cfG3KgSR7fU


http://www.youtube.com/watch?v=-bS-3rN6Avc


How can you not love the guy?>?>
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Old 12-20-2012, 07:23 AM   #86
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Navigator didn’t do his job so he missed the turn,
Navigator did his job just fine. There would be no note in the roadbook for a simple turn like that, and they have no tracks or maps on the GPS screen, so there is no way for him to know there was a turn there let alone how sharp it was. It's up to the driver to not drive faster than he can see.
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Old 12-20-2012, 08:37 AM   #87
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Navigator did his job just fine. There would be no note in the roadbook for a simple turn like that, and they have no tracks or maps on the GPS screen, so there is no way for him to know there was a turn there let alone how sharp it was. It's up to the driver to not drive faster than he can see.
are you sure about that? My understanding all along is that at top race speeds you are completely driving beyond what you can see which is why you have the roadbook/ co driver to begin with
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Old 12-20-2012, 08:51 AM   #88
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these are not pace notes like in WRC
what they use to follow the route is a road book so no

that issue was not due to the co pilot error
and the one he had in the car at that time is a pretty good one too


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Originally Posted by 5 speed View Post
are you sure about that? My understanding all along is that at top race speeds you are completely driving beyond what you can see which is why you have the roadbook/ co driver to begin with
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Old 12-20-2012, 09:07 AM   #89
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are you sure about that? My understanding all along is that at top race speeds you are completely driving beyond what you can see which is why you have the roadbook/ co driver to begin with
In Baja the competitors prerun the course days ahead of race day (memorizing it), they have very accurate GPS tracks showing very inch of the course, and many have written course notes detailing hazards that they saw while prerunning. So, in Baja the co-driver IS responsible for letting the driver know about hazards including sharp curves, or even small curves if they are in heavy dust. Many drive completely blind in dust, following the GPS.

In Dakar and most other cross-country rally events it's completely different. The course is secret. The competitors don't know where it goes until they are on it racing, and even then it's easy to get lost. There are no course markers, no GPS tracks or maps, no prerunning, and no custom made course notes. Most of the time the only things they have for navigation are the official roadbook, their odometer, and a digital compass.

The roadbook usually indicates moderate and severe hazards, but not curves in the road, unless it's a particularly dangerous curve that might have a cliff or something really bad at the edge. It's not like WRC rally, where EVERY turn and bump is in the roadbook. In this type of rally, the job of the navigator is to tell the driver which way to go at intersections, and basic direction information like that. In a 300 mile Special, there typically might be 10 to 20 hazards marked in the roadbook, and a few hundred "turn left at this intersection" type directions. In those 300 miles, they might go through 5000 "curves" which are not in the roadbook. Think of the roadbook as the MINIMUM information needed to navigate your way through the stage, plus 20 or so SERIOUS marked hazards.
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Old 12-20-2012, 09:24 AM   #90
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Originally Posted by HogWild View Post
In Baja the competitors prerun the course days ahead of race day (memorizing it), they have very accurate GPS tracks showing very inch of the course, and many have written course notes detailing hazards that they saw while prerunning. So, in Baja the co-driver IS responsible for letting the driver know about hazards including sharp curves, or even small curves if they are in heavy dust. Many drive completely blind in dust, following the GPS.

In Dakar and most other cross-country rally events it's completely different. The course is secret. The competitors don't know where it goes until they are on it racing, and even then it's easy to get lost. There are no course markers, no GPS tracks or maps, no prerunning, and no custom made course notes. Most of the time the only things they have for navigation are the official roadbook, their odometer, and a digital compass.

The roadbook usually indicates moderate and severe hazards, but not curves in the road, unless it's a particularly dangerous curve that might have a cliff or something really bad at the edge. It's not like WRC rally, where EVERY turn and bump is in the roadbook. In this type of rally, the job of the navigator is to tell the driver which way to go at intersections, and basic direction information like that. In a 300 mile Special, there typically might be 10 to 20 hazards marked in the roadbook, and a few hundred "turn left at this intersection" type directions. In those 300 miles, they might go through 5000 "curves" which are not in the roadbook. Think of the roadbook as the MINIMUM information needed to navigate your way through the stage, plus 20 or so SERIOUS marked hazards.
Very Interesting!!! Thanks for the clarification. SO, I recall somewhere, I think it was Neduro stating last year that to be in top, top, you have to outdrive/ride your vision and count on the roadbook. So, if the info is not all in there, how is that accomplished??????
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