[DeTomaso] Tapered ring compressor
Ken Green
kenn_green at yahoo.com
Wed Jul 5 11:55:25 EDT 2017
Do you mean the U-joints very slightly twist or the half shafts? I can imaging a solid axle twisting a little without breaking, but it's hard to imagine a tubular axel twisting without being compromised?
Ken
From: Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
To: Will Kooiman <will.kooiman at gmail.com>
Cc: detomaso at detomasolist.com
Sent: Tuesday, July 4, 2017 9:42 PM
Subject: Re: [DeTomaso] Tapered ring compressor
Fwiw Dennis Quella told me a story years ago. He builds ZF gearboxes for owners of Wells Coyote hill climb cars for Pikes Peak. He told me they use stock Pantera driveshafts, and they twist under all the power, so after they twist they flip them side to side, and the next run un-twists them!
Mike
Sent from my iPad
> On Jul 4, 2017, at 21:30, Will Kooiman <will.kooiman at gmail.com> wrote:
>
> Jack - my Cobra halfshafts are not cut and re-welded. They appear to be
> forged. They are solid, 1.25”. They have the original Jag part numbers,
> and I even found some on ebay less than 10 miles from my house. But I
> don’t want to replace the half-shafts with another pair that will also
> twist.
>
> BTW, it doesn’t shake, shimmy, or do anything weird, even with the shaft
> twisted a bit. It’s currently smooth as butter.
>
> As I understand it, it is pretty common for drag racers to twist axles. I
> don’t know if they still do it these days with super strong axles, but I
> heard they used to paint a line down the axles so they could see how far
> they had twisted. I don’t have to do that, since each end has a U-joint
> that doesn’t move, so it’s pretty obvious when they twist.
>
> I plan on having half shafts made in 2.5” tube. That’s about as big as I
> can go w/out moving the springs out. But that’s a project in the future.
> I have a few others in front of it.
>
>> On 7/2/17, 9:11 AM, "Joseph F. Byrd, Jr." <byrdjf at embarqmail.com> wrote:
>>
>> My Lord!
>>
>> Is that something that happens with Jag half shafts?
>>
>> I would think you should also be feeling a weird vibration, not only from
>> the expectation the twist threw the shaft out of balance, But more so from
>> the u joints being out of phase. I wonder if that might be
>> pushing/pulling
>> once per revolution on the bearings and the seal was the FIRST to suffer.
>>
>> -----Original Message-----
>> From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On Behalf
>> Of Will Kooiman
>> Sent: Sunday, July 02, 2017 1:21 AM
>> To: Ken Green; Thomas Törnblom
>> Cc: Detomaso Email List
>> Subject: Re: [DeTomaso] Tapered ring compressor
>>
>> ...The squealing was the seal race....and was rotating where it wasn¹t
>> supposed to rotate.
>>
>> ...the half shafts had twisted about 30 degrees....
>>
>>
>
>
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-------------- next part --------------
Do you mean the U-joints very slightly twist or the half shafts? I can
imaging a solid axle twisting a little without breaking, but it's hard
to imagine a tubular axel twisting without being compromised?
Ken
__________________________________________________________________
From: Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
To: Will Kooiman <will.kooiman at gmail.com>
Cc: detomaso at detomasolist.com
Sent: Tuesday, July 4, 2017 9:42 PM
Subject: Re: [DeTomaso] Tapered ring compressor
Fwiw Dennis Quella told me a story years ago. He builds ZF gearboxes
for owners of Wells Coyote hill climb cars for Pikes Peak. He told me
they use stock Pantera driveshafts, and they twist under all the power,
so after they twist they flip them side to side, and the next run
un-twists them!
Mike
Sent from my iPad
> On Jul 4, 2017, at 21:30, Will Kooiman <[1]will.kooiman at gmail.com>
wrote:
>
> Jack - my Cobra halfshafts are not cut and re-welded. They appear to
be
> forged. They are solid, 1.25a. They have the original Jag part
numbers,
> and I even found some on ebay less than 10 miles from my house. But
I
> donat want to replace the half-shafts with another pair that will
also
> twist.
>
> BTW, it doesnat shake, shimmy, or do anything weird, even with the
shaft
> twisted a bit. Itas currently smooth as butter.
>
> As I understand it, it is pretty common for drag racers to twist
axles. I
> donat know if they still do it these days with super strong axles,
but I
> heard they used to paint a line down the axles so they could see how
far
> they had twisted. I donat have to do that, since each end has a
U-joint
> that doesnat move, so itas pretty obvious when they twist.
>
> I plan on having half shafts made in 2.5a tube. Thatas about as big
as I
> can go w/out moving the springs out. But thatas a project in the
future.
> I have a few others in front of it.
>
>> On 7/2/17, 9:11 AM, "Joseph F. Byrd, Jr." <[2]byrdjf at embarqmail.com>
wrote:
>>
>> My Lord!
>>
>> Is that something that happens with Jag half shafts?
>>
>> I would think you should also be feeling a weird vibration, not only
from
>> the expectation the twist threw the shaft out of balance, But more
so from
>> the u joints being out of phase. I wonder if that might be
>> pushing/pulling
>> once per revolution on the bearings and the seal was the FIRST to
suffer.
>>
>> -----Original Message-----
>> From: DeTomaso [mailto:[3]detomaso-bounces at server.detomasolist.com]
On Behalf
>> Of Will Kooiman
>> Sent: Sunday, July 02, 2017 1:21 AM
>> To: Ken Green; Thomas TAP:rnblom
>> Cc: Detomaso Email List
>> Subject: Re: [DeTomaso] Tapered ring compressor
>>
>> ...The squealing was the seal race....and was rotating where it
wasnA^1t
>> supposed to rotate.
>>
>> ...the half shafts had twisted about 30 degrees....
>>
>>
>
>
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>
>
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list. They also grant the list owner permission to maintain an archive
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References
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2. mailto:byrdjf at embarqmail.com
3. mailto:detomaso-bounces at server.detomasolist.com
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