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SgtSamy
Samba Member
Joined: July 10, 2010
Posts: 734
Location: Miami, Florida
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 Posted: Thu Dec 23, 2010 8:03 pm Post subject: Wheel hop when I change gear |
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Hi guys, sorry if Im repeating myself, I dont know how to delete the other thread sorry about that. When Im in high speed at the 4th gear, the car is rolling good. Its fluid. But I notice when Im starting at the first or when I change from the first to the second, its just bump, or even when Im changing the second to the third (but its less) Just like when you put a gear and you dont put press the gas enough. But I mean even If I press the gas, its still bumping. It does that when I decrease gear too. What can it be, obviously its releated to the transmission or the clutch. What you guys think?
Last edited by SgtSamy on Thu Dec 23, 2010 8:19 pm; edited 1 time in total |
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Semper_Dad
Samba Member
Joined: May 14, 2005
Posts: 3533
Location: Indiana
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| Posted: Thu Dec 23, 2010 8:07 pm Post subject: |
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If it's more of a "wheel hop" than a "bump" it could be the bowden tube for the clutch cable.
Picture below is a bowden tube on an older bug. Safari setup is similar. Note the number of washers on the rear end of the tube. They are placed there to give the tube the proper bend.
A "bump" when accelerating or decelerating could be a forward transmission mount.
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Walküre Restoration Thread: https://www.thesamba.com/vw/forum/viewtopic.php?t=737492
Last edited by Semper_Dad on Thu Dec 23, 2010 8:17 pm; edited 1 time in total |
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SgtSamy
Samba Member
Joined: July 10, 2010
Posts: 734
Location: Miami, Florida
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| Posted: Thu Dec 23, 2010 8:17 pm Post subject: |
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| Semper_Dad wrote: |
If it's more of a "wheel hop" than a "bump" it could be the bowden tube for the clutch cable.
Picture below is a bowden tube on a bug. Note the number of washers on the rear end of the tube. They are placed there to give the tube the proper bend.
A "bump" when accelerating or decelerating could be a forward transmission mount. |
Hi Semper, what is the job of this tube? Ad why its need to be properly bend? Yes its kind of a wheel hop. Heheh. |
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Semper_Dad
Samba Member
Joined: May 14, 2005
Posts: 3533
Location: Indiana
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SgtSamy
Samba Member
Joined: July 10, 2010
Posts: 734
Location: Miami, Florida
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| Posted: Thu Dec 23, 2010 8:24 pm Post subject: |
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| THX! Yes it sound like it actually. |
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sixty9fasty
Samba Member
Joined: April 12, 2004
Posts: 1066
Location: crockett, ca
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| Posted: Thu Dec 23, 2010 10:08 pm Post subject: |
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| Hmmm. might wanna also check your tranny mount. Especially the nose mount... |
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jsturtlebuggy
Samba Member
Joined: August 24, 2005
Posts: 4599
Location: Fair Oaks/Orangevale, CA
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| Posted: Thu Dec 23, 2010 11:39 pm Post subject: |
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If you have a gear reduction box transaxle in your Type 181 which came in them in Mexico.
The axles turn in reverse direction out to the reduction boxes.
This cause the rear to rise when stepping on the gas instead of squating like a standard bug type transaxle.
1967 and earlier VW Buses do the same thing because of the reduction boxes.
It is referred to as hopping when the rear end rises. Noise could be spring plates hitting lower stops.
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Joseph
Fair Oaks/Orangevale, CA
Elrod Motorsports
Motion Tire Motorsports
Having fun with Dune Buggies since 1970
Into Volkswagens since 1960 |
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Pierre G
Samba Member
Joined: April 28, 2007
Posts: 1771
Location: New Caledonia
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| Posted: Fri Dec 24, 2010 12:34 am Post subject: |
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| jsturtlebuggy wrote: |
If you have a gear reduction box transaxle in your Type 181 which came in them in Mexico.
The axles turn in reverse direction out to the reduction boxes.
This cause the rear to rise when stepping on the gas instead of squating like a standard bug type transaxle.
1967 and earlier VW Buses do the same thing because of the reduction boxes.
It is referred to as hopping when the rear end rises. Noise could be spring plates hitting lower stops. |
X2. Samy, I think you might have nothing wrong. Just the typical (and normal) hopping described by turtlebuggy. I had 3 181s in the past with swingaxle and RGBs and they were all doing this. Every single one does. The 1973-on with IRS and no RGBs don't do that.
Now if there's a "move" you can feel in the shifter, when releasing the gas pedal (in full accelaration in 3rd for example), this could be the tranny mount like sixty9fasty said. They break frequently on 181s with RGBs, because of that specific hopping. You absolutely need to check that. That's a simple visual inspection under the car. Crawl under there and check the nose trans mounts (between nose of trans and chassis). See if there's some cracks in the rubber, or if the rubber is separated from the metal part of the mount. Put a huge screwdriver or a flat bar between chassis and mount and make it move (gently) to see any failure.
That's the part we're talking about :
http://www2.cip1.com/ProductDetails.asp?ProductCode=VWC%2D211%2D301%2D265%2D1
Pierre
_________________
1976 181/Thing, 1967 fastback, 1973 squareback, 1964 microbus, 1967 Double Cab, 1969 westfalia (currently under resto), 1972 LM1C dune buggy, 1974 jean's bug, 1974 1303 (super beetle, currently under reassembly after new paint). |
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SgtSamy
Samba Member
Joined: July 10, 2010
Posts: 734
Location: Miami, Florida
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| Posted: Fri Dec 24, 2010 6:15 am Post subject: |
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| Thx Pierre Semper and sixty9fasty! Im gonna check that today. Merry Christmas btw, Best wishes! |
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Pierre G
Samba Member
Joined: April 28, 2007
Posts: 1771
Location: New Caledonia
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| Posted: Sat Dec 25, 2010 3:04 pm Post subject: |
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| SgtSamy wrote: |
| Thx Pierre Semper and sixty9fasty! Im gonna check that today. Merry Christmas btw, Best wishes! |
You forgot jsturtlebuggy.  You're welcome, de nada, de rien, bitteschön !
I'm always glad to help, and I hope you can finally fully enjoy this Safari soon.
Joyeux Noël.
_________________
1976 181/Thing, 1967 fastback, 1973 squareback, 1964 microbus, 1967 Double Cab, 1969 westfalia (currently under resto), 1972 LM1C dune buggy, 1974 jean's bug, 1974 1303 (super beetle, currently under reassembly after new paint). |
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