[DeTomaso] Tapered ring compressor

Mike Drew MikeLDrew at aol.com
Wed Jul 5 00:42:10 EDT 2017


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....
>> 
>> 
> 
> 
> _______________________________________________
> 
> 
> Detomaso Email List is not managed by POCA
> Posted emails must not exceed 1.5 Megabytes
> DeTomaso mailing list
> DeTomaso at server.detomasolist.com
> http://server.detomasolist.com/mailman/listinfo/detomaso
> 
> To manage your subscription (change email address, unsubscribe, etc.) use the links above.
> 
> Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages.



More information about the DeTomaso mailing list