It is currently Tue Dec 11, 2018 6:09 pm

All times are UTC - 5 hours [ DST ]


Forum rules


Please click here to view the forum rules



Post new topic Reply to topic  [ 13 posts ] 
Author Message
 Post subject: New Steering Coupler
PostPosted: Mon Jul 30, 2018 11:55 pm 
356 Fan
User avatar

Joined: Wed Mar 26, 2008 11:45 am
Posts: 6071
Location: San Francisco
embarrassing tantrum deleted.

_________________
Ron LaDow
www.precisionmatters.biz


Last edited by Ron LaDow on Tue Jul 31, 2018 10:28 pm, edited 1 time in total.

Top
 Profile  
Reply with quote  
 Post subject: Re: New Steering Coupler
PostPosted: Tue Jul 31, 2018 12:16 am 
356 Fan

Joined: Wed Nov 23, 2011 10:52 am
Posts: 3424
Location: Cleveland, Ohio
Ron, can't a simple image resize make this work? I'd have to spend ten minutes to do it cuz I am old like you, but I think it is really a 30 second chore. I am not trying to be obnoxious. Find a kid to help. I am interested to see what your product looks like, too.

_________________


Top
 Profile  
Reply with quote  
 Post subject: Re: New Steering Coupler
PostPosted: Tue Jul 31, 2018 12:21 am 
356 Fan
User avatar

Joined: Wed Mar 26, 2008 11:45 am
Posts: 6071
Location: San Francisco
Embarrassing tantrum deleted.

_________________
Ron LaDow
www.precisionmatters.biz


Last edited by Ron LaDow on Tue Jul 31, 2018 10:28 pm, edited 1 time in total.

Top
 Profile  
Reply with quote  
 Post subject: Re: New Steering Coupler
PostPosted: Tue Jul 31, 2018 12:29 am 
356 Fan

Joined: Wed Nov 23, 2011 10:52 am
Posts: 3424
Location: Cleveland, Ohio
I regularly send very small file images to insurance companies with estimates, they show more than enough detail and look plenty clear. A normal cel phone picture is far higher quality than needed for this use.

_________________


Top
 Profile  
Reply with quote  
 Post subject: Re: New Steering Coupler
PostPosted: Tue Jul 31, 2018 12:37 am 
356 Fan
User avatar

Joined: Wed Mar 26, 2008 11:45 am
Posts: 6071
Location: San Francisco
Martin Benade wrote:
I regularly send very small file images to insurance companies with estimates, they show more than enough detail and look plenty clear. A normal cel phone picture is far higher quality than needed for this use.

Suffice to say, what I wish to convey needs the resolution I prefer. Why it is not possible to post them here remains a mystery.
YMMV.

_________________
Ron LaDow
www.precisionmatters.biz


Top
 Profile  
Reply with quote  
 Post subject: Re: New Steering Coupler
PostPosted: Tue Jul 31, 2018 6:18 am 
356 Fan
User avatar

Joined: Fri Oct 23, 2009 7:24 pm
Posts: 7068
Location: 30MI WEST OF PHILA
Attachment:
7-30 002.jpg
7-30 002.jpg [ 804.06 KiB | Viewed 741 times ]
Until Ron gets out of bed in SF here is what he has made. Flexibility is provided by rubber o-rings and safety is provided by washers which will not allow the assembly to pull apart if the o-rings would fail.

_________________
'57 Speedster - very real
'59 Sunroof - mostly real
'60 Devin D Race Car-in process - fake chassis - real body
'63 GS 2133 coupe - very real
'67 S Original Owner - ultra real


Top
 Profile  
Reply with quote  
 Post subject: Re: New Steering Coupler
PostPosted: Tue Jul 31, 2018 10:34 am 
356 Fan
User avatar

Joined: Tue Mar 25, 2008 7:20 pm
Posts: 1276
Location: Metuchen, NJ
I can post high res images taken with my iPhone with no problem and it looks like CJ can too. Perhaps you're having a different problem, although I can't imagine what. Nice looking product BTW.


Ron LaDow wrote:
...Oh, and see that black square off to the left? That's what the Registry Site filter allowed of the shot of my Speedster. Informative, isn't it?

And I'm used to your solid black square. It's instantly recognizable as 'you' and very hard to miss as you scroll down the page. I always gave you credit for coming up with it as a great marketing tool...can't miss it!

_________________
Emil Wojcik
'64C Euro coupe


Top
 Profile  
Reply with quote  
 Post subject: Re: New Steering Coupler
PostPosted: Tue Jul 31, 2018 10:47 am 
356 Fan
User avatar

Joined: Wed Mar 26, 2008 11:45 am
Posts: 6071
Location: San Francisco
First, I apologize for the temper tantrum, and specifically to Curt.
CJ, thanks for posting that, and I'll be a good boy today and re-size all the images to show what and why.
Emil, I'm using a Fuji 'point and shoot', and when I try uploading, I get 'exceeds (some limit) cannot accept', and I remain amazed that the site will not accept what comes off of one of those cameras.
Again, my apologies.

_________________
Ron LaDow
www.precisionmatters.biz


Top
 Profile  
Reply with quote  
 Post subject: Re: New Steering Coupler
PostPosted: Tue Jul 31, 2018 11:15 am 
356 Fan
User avatar

Joined: Tue Mar 25, 2008 7:20 pm
Posts: 1276
Location: Metuchen, NJ
Yeah, a camera's resolution is too high for three other sites I frequent, it's not just the Registry. Phone cameras are lower res but still way more than what's needed for most purposes.

On my point-and-shoot camera I can lower the resolution before shooting. Don't know if yours can be adjust but might be worth a try.

_________________
Emil Wojcik
'64C Euro coupe


Top
 Profile  
Reply with quote  
 Post subject: Re: New Steering Coupler
PostPosted: Tue Jul 31, 2018 12:47 pm 
356 Fan
User avatar

Joined: Wed Mar 26, 2008 11:45 am
Posts: 6071
Location: San Francisco
Emil,
Maybe there is such a feature on my camera, but I'm a better wrench than a photoger, so I 'adjust' the images in Paint on the computer.
Anyhow, this is the subject:
We want a bit of elasticity in the steering gear and here's where we started:
Attachment:
Proto to skank.JPG
Proto to skank.JPG [ 773.17 KiB | Viewed 689 times ]

The scheme here puts metal connecting pieces in an elastic part. We got the elasticity, but we also have a part which can fail catastrophically if it isn't inspected regularly, and a lot of 356s no longer get that sort of attention.
So let's reverse the scheme and capture elastic inserts in recesses in sandwiched metal parts as shown in the one-hole test piece:
Attachment:
Blank 001.JPG
Blank 001.JPG [ 1.3 MiB | Viewed 689 times ]

Actually, more than a couple of one-hole test pieces to get the dims correct, and then make a four-holer (if you will):
Attachment:
Still square 004.JPG
Still square 004.JPG [ 1.04 MiB | Viewed 689 times ]

And then a little work on the lathe gets you:
Attachment:
Functional Prototype - early006.JPG
Functional Prototype - early006.JPG [ 1.52 MiB | Viewed 689 times ]

By altering the lengths of the bushings, the same part will fit both early and late applications. This is the "early" fitting; the "flanges" are bolted to the short bushings.
Added by edit; got a question to my email:
Both length bushings are fitted to the part. They simply alternate on either side; short-90*-long-90*-short-90*-long. Which means the assembled part can be rotated to fit the "early" or "late" application.
Notice the long bushings are sized such that they cannot pull through, meaning that a complete failure of the elastic inserts will not allow the steering wheel to pull back and disengage from the linkage. Maximum axial movement on such a failure is ~.03"
Here's the "Late" fitting:
Attachment:
7-30 002.JPG
7-30 002.JPG [ 1.23 MiB | Viewed 689 times ]

This has the "flanges" attached to the long bushings, thus making the part thick enough to serve in the later steering design. The washers on the short bushings serve to prevent pull-though, and per above, limit the axial movement during failure.
Baring some sort of atomic failure of the aluminum, this part is absolutely fail safe and will be the last steering coupler your car will ever need.
One final image (8/10/18):
Attachment:
Ground Fastening Cropped.JPG
Ground Fastening Cropped.JPG [ 1.2 MiB | Viewed 424 times ]

Our chief Product Designer (cough, cough) is congenitally opposed to capturing electrical terminals in structural fastenings, so you'll notice the secondary nut, meaning that any crush of the ring-tongue terminal in no way affects the structural integrity of the assembly.

Parts are under contract, the aim is to have stock by late September and the price looks to be well under $150.
I hope you'll consider our product for your car.

_________________
Ron LaDow
www.precisionmatters.biz


Last edited by Ron LaDow on Fri Aug 10, 2018 8:48 pm, edited 2 times in total.

Top
 Profile  
Reply with quote  
 Post subject: Re: New Steering Coupler
PostPosted: Wed Aug 01, 2018 12:43 pm 
356 Fan

Joined: Tue Mar 25, 2008 6:14 pm
Posts: 202
Hi Ron do you think this part is safe in an accident? The original part has quite a bit of "give" built into it which allows it to deflect and possibly break during an accident which may be a beneficial side affect of having factory rubber style piece. Wondering if making it more rigid and unbreakable could cause injury to driver in side collision (ripping wheel from drivers hands) or head on collision pushing steering column shaft into driver or possibly causing more damage to steering and suspension components too?
Also would this system transmit more vibration to steering wheel?

Michael Foster
p.s. love your products and appreciate the work you do for us 356 people.

_________________
MICHAEL FOSTER


Top
 Profile  
Reply with quote  
 Post subject: Re: New Steering Coupler
PostPosted: Wed Aug 01, 2018 7:09 pm 
356 Fan
User avatar

Joined: Wed Mar 26, 2008 11:45 am
Posts: 6071
Location: San Francisco
Michael,
There is no more 'give' in the stock parts than the Pre Mat part until they are long past requiring replacement. Hoping for a benign failure is hoping you have a very specific crash just before the parts were going to fall apart anyhow.
And neither the stock piece nor any of the replacements offer any help at all in a head-on collision, and shy of re-engineering the steering shaft entirely, there is no way to do so. There are some few advantages to having a car that gets backwards easily, and this is one of them.
You are far more likely to have a dangerous failure by many decimal points.
As to transmitting vibration, it is doubtful. All four bushings ride within 70-duro elastomer rings. I guess you might find some weird harmonic if a wheel were out of balance exactly this much at that exact speed, but like the benign failure, chances are probably better at the Lotto.
Thanks for the comment

_________________
Ron LaDow
www.precisionmatters.biz


Top
 Profile  
Reply with quote  
 Post subject: Re: New Steering Coupler
PostPosted: Wed Aug 01, 2018 7:35 pm 
356 Fan
User avatar

Joined: Tue Mar 25, 2008 7:20 pm
Posts: 1276
Location: Metuchen, NJ
I would have just said even with a perfect original coupler you'd be dead before the coupler would fail from an accident. Your explanation sounds a lot more credible than mine, so, thanks.

_________________
Emil Wojcik
'64C Euro coupe


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 13 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB® Forum Software © phpBB Group