Hi All. What can be done to reduce or prevent axle (wheel) hopping during a
holeshot start? It's pretty bad through first gear on my 2001 M3 Couple. TIA

hello ,
what exactly is " axle hopping " ?
is your " DSC " switched on ?+
Dick







"Planar1" <sgfan@bigfoot.com> wrote in message
news:jzQzk.11421$Dj1.4640@newsfe01.iad...
> Hi All. What can be done to reduce or prevent axle (wheel) hopping during
> a holeshot start? It's pretty bad through first gear on my 2001 M3 Couple.
> TIA
>

The DSC is switched off. The holeshot I am talking about is a drag racing
sort of start. Rev the motor a bit and dump the clutch. When a lot of
throttle is used and tires start to spin, at a certain point the rear wheels
will begin to bounce. Sometimes it will actually shake the trans into
neutral (from first gear). In the old days, "traction bars" were used to
control this sort of thing.


"D." <wdstk69@sover.net> wrote in message
news:48d03955$0$26365$4d3efbfe@news.sover.net...
> hello ,
> what exactly is " axle hopping " ?
> is your " DSC " switched on ?+
> Dick
>
>
>
>
>
>
>
> "Planar1" <sgfan@bigfoot.com> wrote in message
> news:jzQzk.11421$Dj1.4640@newsfe01.iad...
>> Hi All. What can be done to reduce or prevent axle (wheel) hopping during
>> a holeshot start? It's pretty bad through first gear on my 2001 M3
>> Couple. TIA
>>
>
>

I think you need anti-tramp bars - should be available from your local
"hop-up kit" store (sic)

And letting the tires (sic) down a bit might help ...

Why's it called a holeshot start???



"Planar1" <sgfan@bigfoot.com> wrote in message
news:Zn0Ak.9962$PK.838@newsfe04.iad...
> The DSC is switched off. The holeshot I am talking about is a drag racing
> sort of start. Rev the motor a bit and dump the clutch. When a lot of
> throttle is used and tires start to spin, at a certain point the rear
> wheels will begin to bounce. Sometimes it will actually shake the trans
> into neutral (from first gear). In the old days, "traction bars" were used
> to control this sort of thing.
>
>
> "D." <wdstk69@sover.net> wrote in message
> news:48d03955$0$26365$4d3efbfe@news.sover.net...
>> hello ,
>> what exactly is " axle hopping " ?
>> is your " DSC " switched on ?+
>> Dick
>>
>>
>>
>>
>>
>>
>>
>> "Planar1" <sgfan@bigfoot.com> wrote in message
>> news:jzQzk.11421$Dj1.4640@newsfe01.iad...
>>> Hi All. What can be done to reduce or prevent axle (wheel) hopping
>>> during a holeshot start? It's pretty bad through first gear on my 2001
>>> M3 Couple. TIA
>>>
>>
>>
>
>

In article <jzQzk.11421$Dj1.4640@newsfe01.iad>,
Planar1 <sgfan@bigfoot.com> wrote:
>Hi All. What can be done to reduce or prevent axle (wheel) hopping during a
>holeshot start? It's pretty bad through first gear on my 2001 M3 Couple. TIA

Is your goal to prevent hopping completely so you can get off the line
faster, or are you only worried about the shear torque produced damaging
your differential?

Have you already got good tires on? Is your positraction working?
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

In article <Zn0Ak.9962$PK.838@newsfe04.iad>, Planar1 <sgfan@bigfoot.com> wrote:
>The DSC is switched off. The holeshot I am talking about is a drag racing
>sort of start. Rev the motor a bit and dump the clutch. When a lot of
>throttle is used and tires start to spin, at a certain point the rear wheels
>will begin to bounce. Sometimes it will actually shake the trans into
>neutral (from first gear). In the old days, "traction bars" were used to
>control this sort of thing.

Traction bars don't really control the hop much, but they keep you from
tearing your rear end apart when it hops.

Are you using slicks?
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

The posi works perfectly. The tires are Goodyear F1s (I think that's what
they are called). I'm not running slicks. Not looking for a true drag racing
set-up. All I want to do is have "fun" a little more safely so not to damage
the suspension or anything else.



"Scott Dorsey" <kludge@panix.com> wrote in message
news:gar38s$3d4$1@panix2.panix.com...
> In article <jzQzk.11421$Dj1.4640@newsfe01.iad>,
> Planar1 <sgfan@bigfoot.com> wrote:
>>Hi All. What can be done to reduce or prevent axle (wheel) hopping during
>>a
>>holeshot start? It's pretty bad through first gear on my 2001 M3 Couple.
>>TIA
>
> Is your goal to prevent hopping completely so you can get off the line
> faster, or are you only worried about the shear torque produced damaging
> your differential?
>
> Have you already got good tires on? Is your positraction working?
> --scott
> --
> "C'est un Nagra. C'est suisse, et tres, tres precis."

Boy racer "Planar1" <sgfan@bigfoot.com> wrote in message
news:jzQzk.11421$Dj1.4640@newsfe01.iad...
> Hi All. What can be done to reduce or prevent axle (wheel) hopping during
> a holeshot start? It's pretty bad through first gear on my 2001 M3 Couple.
> TIA
>

Switch the DSC on.

I don't want the DSC on. I want to play! Isn't that one reason we drive M3s?


"R. Mark Clayton" <nospamclayton@btinternet.com> wrote in message
news:POadnXB9kZyKuE_V4p2dnAA@bt.com...
>
> Boy racer "Planar1" <sgfan@bigfoot.com> wrote in message
> news:jzQzk.11421$Dj1.4640@newsfe01.iad...
>> Hi All. What can be done to reduce or prevent axle (wheel) hopping during
>> a holeshot start? It's pretty bad through first gear on my 2001 M3
>> Couple. TIA
>>
>
> Switch the DSC on.
>

No that's the reason one buys US cars with huge V8's and pathetic dynamics.

"Planar1" <sgfan@bigfoot.com> wrote in message
news:ItrAk.14776$Dj1.905@newsfe01.iad...
>I don't want the DSC on. I want to play! Isn't that one reason we drive
>M3s?
>
> "R. Mark Clayton" <nospamclayton@btinternet.com> wrote in message
> news:POadnXB9kZyKuE_V4p2dnAA@bt.com...
>>
>> Boy racer "Planar1" <sgfan@bigfoot.com> wrote in message
>> news:jzQzk.11421$Dj1.4640@newsfe01.iad...
>>> Hi All. What can be done to reduce or prevent axle (wheel) hopping
>>> during a holeshot start? It's pretty bad through first gear on my 2001
>>> M3 Couple. TIA
>>>
>>
>> Switch the DSC on.
>>
>
>