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 Post subject: FORWARD TO REVERSE 180
PostPosted: Thu Jan 07, 2010 7:58 pm 
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Okay, I know I can get the car to come half circle. Driving forward, scandinavian flick, slight handbrake, now we're moving in reverse. Question is: how do I shift into reverse, while moving backwards, without grinding the gear (aside from the rev match whose target I'd be clueless about). I don't have the shift pattern nor the type of tranny that would allow for quick problem free injection. Thoughts.

NOW CONVERSELY:

Also, when trying to 180 from reverse, the brake pedal acts as the disrupter, much like the handbrake does when moving forward, correct?
MEANING: TO SPIN THE CAR MOVING IN DIRECTION (---->) WITH POLES (F, FRONT), (R, REAR), the only way to disrupt the natural motion of the car in addition to the scandinavian flick is the brake pedal, right, because the handbreak would just be counterproductive, no?
[F---R] ------> [R----F] ----->


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PostPosted: Thu Jan 07, 2010 8:02 pm 
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Lock the drive wheels if possible. Since they won't be moving, you don't have to rev-match.

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PostPosted: Thu Jan 07, 2010 8:08 pm 
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Interesting idea. ABS prevents it. Like the thinking though!


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PostPosted: Thu Jan 07, 2010 8:14 pm 
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I know this from too many reverse 180 donuts in the snow :lol:

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PostPosted: Thu Jan 07, 2010 8:18 pm 
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Planning on getting into the Presidential Chauffeur business?

It might be easier to practice in the other direction. Start in reverse, donut 180 into forward, rev-match, shift, and go.

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PostPosted: Thu Jan 07, 2010 8:25 pm 
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Forward to Reverse I can do.

Must... do... opposite.

How?


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PostPosted: Thu Jan 07, 2010 8:30 pm 
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http://www.5min.com/Video/How-to-Do-a-R ... ch-2654679

i don't see him addressing the grinding issue. i was rolling down my driveway once, in reverse, and when I tried to put it into reverse while rolling backwards it grinded. should've seen my dad's face. lol. man i miss him.

anyway. thoughts? can this be done without grinding? or what?


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PostPosted: Thu Jan 07, 2010 8:31 pm 
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Reverse to forward is very easy. Go fast in reverse, cut the wheel, enjoy slide as front flies around, straighten out.

http://en.wikipedia.org/wiki/J-turn

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PostPosted: Thu Jan 07, 2010 8:38 pm 
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okay. i can do both. seems like i'm discombobulated tonight. this is what i can do:

in gear forward, 180, to rolling neutral reverse.
in gear reverse, 180, to in gear forward.

this is what i want to do:

in gear foward, 180, to in gear reverse.


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PostPosted: Thu Jan 07, 2010 8:44 pm 
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i think i should note to those who don't know. you don't want to the car to be in forward gear and moving backwards or vice versa. this is how the engine turns backwards supposedly.


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PostPosted: Thu Jan 07, 2010 8:47 pm 
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I'm thinking you might just have to do forward-to-rolling-neutral-reverse and then wait, clutch in, for the layshaft to stop. Then engage and accelerate rearward. If you perform the entire turn with the clutch floored, that should give it a few seconds to spin down as you compose yourself. Might just be a matter of patience.

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PostPosted: Thu Jan 07, 2010 8:53 pm 
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i can't believe i'm about to ask this: i thought the gear collar was "connected" to the rear wheels.

meaning i'd still have to revmatch to get the car in gear?


Last edited by gizmo on Thu Jan 07, 2010 8:58 pm, edited 1 time in total.

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PostPosted: Fri Jan 08, 2010 2:53 am 
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gizmo wrote:
Interesting idea. ABS prevents it. Like the thinking though!


Open your electronics panel, pull the ABS relay, flip the bird to those safety conscious pansies who decided you needed something to always be on that totally destroys the fun potential when on a track or a skid pad.

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PostPosted: Fri Jan 08, 2010 6:19 pm 
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^ Agreed.

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PostPosted: Sat Jan 09, 2010 11:42 am 
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I was thinking about this the other day, and think you'd just have to separate the shifting from the steering. Go to neutral before you begin the maneuver and don't leave neutral until you have completed the maneuver.


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