[DeTomaso] Advantages of CV Half Shafts?
Mike Drew
MikeLDrew at aol.com
Thu Dec 26 23:45:42 EST 2019
Sent from my iPad
> On Dec 26, 2019, at 19:53, Julian Kift <julian_kift at hotmail.com> wrote:
>
> The difference (apart from the obvious cost) is also ease of installation of you don't want to be (or are not confident in) pulling your ZF side housings apart.
>>>I was a little disappointed to see there are no installation instructions apart from tips on installing the rubber boots. There seems to be an assumption that installers will be comfortable tearing the sides off their gearboxes on their own. I certainly wouldn’t attempt it without a ZF manual at my side—and maybe not even then.....
Mike (mechanical coward.....)
>
> From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf of Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
> Sent: Thursday, December 26, 2019 7:01 PM
> To: Mike & Elizabeth Thomas <mbefthomas at comcast.net>
> Cc: Detomaso List <detomaso at server.detomasolist.com>
> Subject: Re: [DeTomaso] Advantages of CV Half Shafts?
>
> Mike,
>
> If you get the kind that require adapters to bolt them to the ZF and hub flanges, they are just as heavy as stock driveshafts, if not heavier. If you get the kind that require different gearbox flanges, you have to partially dismantle the gearbox to fit them, but it saves a small amount of weight.
>
> I actually have a set of those latter style from SACC restoration sitting here, along with stock driveshafts, and a postal scale. Perhaps I should get off my butt, no? :)
>
> Stock: 18 lbs 13 oz
>
> SACC CV: 13 lbs 6 oz
>
> CV joints are smoother than Hooke-style U-joints. They can also tolerate greater articulation, although that isn’t a factor unless you choose to reposition the gearbox (say, by moving it rearward to accommodate a longer 460-based engine).
>
> If I had no driveshafts at all, it would be difficult to justify $2300-2500 for CV vs $500-750 for stock-style. If I already had the stock ones and there wasn’t anything wrong with them, $2300-2500 seems very unnecessary. Having said that, I suspect they are capable of withstanding more power, so if I had 600-700 hp I might consider them a necessity. And, they are probably smoother going down the road.
>
> I do think for 99% of us, it falls into the category of recreational spending.
>
> Mike
>
> Sent from my iPad
>
> > On Dec 26, 2019, at 15:38, Mike & Elizabeth Thomas <mbefthomas at comcast.net> wrote:
> >
> > One of the mods I'm considering for my restoration is a swap to CV half
> > shafts. The prices have come down over the last few years. What does
> > the group see as the advantages of these axles v/v u-joint half shafts,
> > besides weight.
> >
> >
> > Thanks
> >
> > Mike Thomas
> >
> > _______________________________________________
> >
> >
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-------------- next part --------------
Sent from my iPad
On Dec 26, 2019, at 19:53, Julian Kift <julian_kift at hotmail.com>
wrote:
The difference (apart from the obvious cost) is also ease of
installation of you don't want to be (or are not confident in) pulling
your ZF side housings apart.
>>>I was a little disappointed to see there are no installation
instructions apart from tips on installing the rubber boots. There
seems to be an assumption that installers will be comfortable tearing
the sides off their gearboxes on their own. I certainly wouldn't
attempt it without a ZF manual at my side--and maybe not even then.....
Mike (mechanical coward.....)
__________________________________________________________________
From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf of
Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
Sent: Thursday, December 26, 2019 7:01 PM
To: Mike & Elizabeth Thomas <mbefthomas at comcast.net>
Cc: Detomaso List <detomaso at server.detomasolist.com>
Subject: Re: [DeTomaso] Advantages of CV Half Shafts?
Mike,
If you get the kind that require adapters to bolt them to the ZF and
hub flanges, they are just as heavy as stock driveshafts, if not
heavier. If you get the kind that require different gearbox flanges,
you have to partially dismantle the gearbox to fit them, but it saves a
small amount of weight.
I actually have a set of those latter style from SACC restoration
sitting here, along with stock driveshafts, and a postal scale. Perhaps
I should get off my butt, no? :)
Stock: 18 lbs 13 oz
SACC CV: 13 lbs 6 oz
CV joints are smoother than Hooke-style U-joints. They can also
tolerate greater articulation, although that isn't a factor unless you
choose to reposition the gearbox (say, by moving it rearward to
accommodate a longer 460-based engine).
If I had no driveshafts at all, it would be difficult to justify
$2300-2500 for CV vs $500-750 for stock-style. If I already had the
stock ones and there wasn't anything wrong with them, $2300-2500 seems
very unnecessary. Having said that, I suspect they are capable of
withstanding more power, so if I had 600-700 hp I might consider them a
necessity. And, they are probably smoother going down the road.
I do think for 99% of us, it falls into the category of recreational
spending.
Mike
Sent from my iPad
> On Dec 26, 2019, at 15:38, Mike & Elizabeth Thomas
<mbefthomas at comcast.net> wrote:
>
> One of the mods I'm considering for my restoration is a swap to CV
half
> shafts. The prices have come down over the last few years. What
does
> the group see as the advantages of these axles v/v u-joint half
shafts,
> besides weight.
>
>
> Thanks
>
> Mike Thomas
>
> _______________________________________________
>
>
> Detomaso Email List is not managed by POCA
> Posted emails must not exceed 1.5 Megabytes
> DeTomaso mailing list
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use the links above.
>
> Members who post to this list grant license to the list to forward
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list. They also grant the list owner permission to maintain an archive
or approve the archiving of list messages.
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