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| Metros have posi? | |
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| Tweet Topic Started: Dec 31 2013, 08:26 PM (1,782 Views) | |
| evmetro | Dec 31 2013, 08:26 PM Post #1 |
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I was not aware that Metros had posi traction In the pic below, I had the e brake on and the brake pedal pressed a little. I spun the wheels briefly two times. Both spins leave two marks. Weird.
Edited by evmetro, Dec 31 2013, 08:27 PM.
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| Napolean Drivinglight | Dec 31 2013, 08:58 PM Post #2 |
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Bent Wrench Garage
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Not weird, normal. Gently applying the breaks more evenly distributes the power by retarding the slipping of whichever wheel has less traction. "left foot breaking" is a common technique in the off road world. |
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| evmetro | Dec 31 2013, 09:05 PM Post #3 |
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Interesting. I have noticed that at 20 mph, the driver side lets loose first, and then if I really romp on it, the passenger side will break free as well. A half ass burnout yields a single mark, a stupid burnout leaves two. |
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| Napolean Drivinglight | Dec 31 2013, 09:16 PM Post #4 |
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Bent Wrench Garage
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Traction control systems use the ABS for the same effect. |
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| PTA2PTB | Dec 31 2013, 09:24 PM Post #5 |
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I'm totally awesome! I swear.
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T3's, custom built Fainya tranny, is the only true posi tranny that I'm aware of. You need to get you one of those - and mate it to that monster elec motor car of yours. Now that, would be a blast. |
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| Johnny Mullet | Dec 31 2013, 10:26 PM Post #6 |
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Fear the Mullet
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EcoMudder has a full time locker. |
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| evmetro | Dec 31 2013, 10:44 PM Post #7 |
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Somehow, it feels like we will eventually see an electric metro being built with a ford 9" in the back. I know of at least one gmf member who might do this... |
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| evmetro | Dec 31 2013, 11:01 PM Post #8 |
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Here is the transmission that would turn the ford 9...
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| 2000Firefly1.3L | Dec 31 2013, 11:03 PM Post #9 |
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One would need to buy the phantom grip Limited Slip unit for the swift transmission, $300 http://www.ebay.ca/itm/200763611785 |
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| evmetro | Dec 31 2013, 11:09 PM Post #10 |
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Firefly, that set up looks pretty cool! I wonder how that would effect economy? |
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| 2000Firefly1.3L | Jan 1 2014, 01:51 AM Post #11 |
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it wouldn't. all it does is transfer torque to both wheels when one is spinning much faster |
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| Woodie | Jan 1 2014, 08:27 AM Post #12 |
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Boy, that's really some fanciful description (and price) for what is basically a $12 block of metal. The only true LSD I've heard of was made by Suzuki's racing division and cost about $1000. |
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| clarkdw | Jan 1 2014, 09:38 AM Post #13 |
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It is not a solid block of steel. It has springs inside pushing the two blocks apart. Until installed they are held together by clips. The two blocks put preload on the thrust washers of the spider gears. That preload on the washers is what gives the "LSD" effect. Not something I would do. Hard on the thrust washers and the spider gear bearing surfaces. Watch this install video and it will become clear how it works. Maybe ok for low torque, small tire, street use but in a high torque, sticky tire, heavy car, race use it would require too much preload on the bearings to have them last any time at all. Phantom grip install Edited by clarkdw, Jan 1 2014, 09:39 AM.
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| Woodie | Jan 1 2014, 11:00 AM Post #14 |
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I knew that, that's why I gave them the benefit of the doubt and valued their $2 worth of metal at $12, allowing for machining and the two springs. Whatever, it's not a true LSD and to talk on and on about the "friction disks" as if it were is disingenuous. |
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| Old Man | Jan 1 2014, 11:14 AM Post #15 |
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"friction discs" have been designed, used, cussed, stomped on, thrown against the wall, and thrown away since at least the mid 50s. |
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2:15 PM Jul 11