Notices

wheel hopping.

Thread Tools
 
Old Feb 11, 2003 | 12:37 PM
  #1  
F23A4_AcCoRdude's Avatar
F23A4_AcCoRdude
Thread Starter
Senior Member
 
Joined: Oct 2002
Posts: 554
Likes: 0
From: LA, CALI
Default wheel hopping.

This is for all that has a manual tranny. Sometimes when i peel out or launch and the wheels are spinning, the car starts "jumping" really fast and the whole interior feels like its falling apart. Some other times when i launch or peel out, its completely smooth and normal. I refer to this as "wheel hopping" and i was just wondering if its normal on other cars. It seems like when i drop the clutch, the wheel hops are more severe than when i just slip the clutch. Anyone on this topic? Thanks.
Reply
Old Feb 11, 2003 | 12:40 PM
  #2  
dantastic's Avatar
dantastic
cx power!
 
Joined: Jun 2002
Posts: 2,435
Likes: 0
From: berkeley, ca --> la, ca representin' tha 510&626
Default

yea.... your front tires arent gripping right when u launch too hard. a good peel out should be smooth, so i guess slipping the clutch gives u the best launch
Reply
Old Feb 11, 2003 | 12:47 PM
  #3  
bruce_91zx's Avatar
bruce_91zx
engiNERD
 
Joined: Jul 2002
Posts: 427
Likes: 0
From: ATX
Default

I had the same experience on my 1991 300zx one time. The whole "back" started to hop. I stopped and then tried to take off again, and the same thing happened. Then I put it into 2nd and took off fine.
My friend's explanation at the time was this. Depending on where you are in the rpm range, you power varies right? So at some "points" during your launch, you have enough power to overcome the static friction between your tires and ground and you peel out. Then I guess the revs raise so high, or drop so low(only experienced it once so I dunno) that you are out of the power band, therefore cannot peel out any longer and the tire regains traction. Then it comes back into power and repeats. This back and fourth action makes your tires grip, slip, grip, slip, ...etc.
Till this day, I still don't know if this is correct b/c that was back in high school, espcially how your revs moves when that happens. But from an engineering standpoint, it makes perfect sense.
Reply
Old Feb 11, 2003 | 01:17 PM
  #4  
RSXoholic's Avatar
RSXoholic
the anti-rice
 
Joined: Aug 2002
Posts: 134
Likes: 0
From: infront of you
Default

yeah wheel hop does happen on a lot of fwd cars. its happens in the rsx pretty bAd. you can two things that help this. 1 motor mount inserts (im getting some in a week or so). 2 a torque dampener. both items prevent the eingine from jumping and twisting and causing a vibration in the drivetrain when on heavy throttle. they both cause more vibration in the cabin but supposedly its tolerable.
Reply
Old Feb 11, 2003 | 01:34 PM
  #5  
fizzbob7's Avatar
fizzbob7
90 accord h22a
 
Joined: Feb 2003
Posts: 477
Likes: 0
From: huntsville, alabama
Default

the way your suspension is set up makes a difference too....and most of the time you can play around with the launch at different rpm's and figure out a way to do it fast, without wheel hop....tires also make a difference
Reply
Old Feb 11, 2003 | 03:30 PM
  #6  
aux's Avatar
aux
More Black on Black Crime
 
Joined: Dec 2000
Posts: 37,776
Likes: 0
From: San Diego, CA
Default

http://www.z10eng.com/index2.cfm

shootem an email
Reply
Old Feb 12, 2003 | 02:39 AM
  #7  
AccordSleeper's Avatar
AccordSleeper
Former H22 Accord Owner
 
Joined: Mar 2002
Posts: 1,839
Likes: 0
From: NH
Default

lower profile tires don't help it either.
Reply
Old Feb 12, 2003 | 05:47 AM
  #8  
aero3685's Avatar
aero3685
Registered User
 
Joined: Jan 2003
Posts: 677
Likes: 0
Default

mine did it also, on stock suspension, and i dropped it about 2" and it doesnt to it anymore. Or at least, i dont notice it anymore.
Reply
Old Feb 12, 2003 | 10:28 AM
  #9  
Level_7's Avatar
Level_7
Senior Member
 
Joined: Dec 2002
Posts: 284
Likes: 0
From: San Diego
Default

I had the same experience on my 1991 300zx one time. The whole "back" started to hop. I stopped and then tried to take off again, and the same thing happened. Then I put it into 2nd and took off fine.
Haha...300ZX's are notorious for wheel hop and are _very_ difficult to launch smoothly (my brother had a '95 300ZX TT for 3 years). You should have got frame spacers which solve the problem.

Re the Accord, you can get slicks, which help slightly, softer springs, or lower your car - or just practice like crazy!
Reply
Old Feb 12, 2003 | 12:27 PM
  #10  
bruce_91zx's Avatar
bruce_91zx
engiNERD
 
Joined: Jul 2002
Posts: 427
Likes: 0
From: ATX
Default

Originally posted by Level_7
Haha...300ZX's are notorious for wheel hop and are _very_ difficult to launch smoothly (my brother had a '95 300ZX TT for 3 years). You should have got frame spacers which solve the problem.
yeah, the rear is so light that it can't stay down.
Reply



All times are GMT -8. The time now is 12:45 PM.