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-   ERA---Speak with Bob Putnam (http://www.clubcobra.com/forums/era-speak-bob-putnam/)
-   -   Bob P. - What's Wrong with this Picture? (http://www.clubcobra.com/forums/era-speak-bob-putnam/139602-bob-p-whats-wrong-picture.html)

ACHiPo 11-05-2017 09:38 AM
Quote:
Originally Posted by DanEC (Post 1432338)
Good old NHV measures. The street is one thing and the race track another. :)
Well, NHV is a new one to me, so rather than embarass myself here, I figger'd I'd Google it...


Rank Abbr. Meaning
NHV Nordiska Högskolan för Folkhälsovetenskap (Swedish: Nordic School of Public Health)
NHV Nederlands Handbal Verbond (Dutch: Netherlands Handball Association)
NHV Noordzee Helikopters Vlaanderen (Dutch; Belgian helicopter transport company)

NHV Norddeutscher Handball Verband
NHV New Hungarian Voice (Vancouver Hungarian paper)
NHV Normal Healthy Volunteer (clinical trials)
NHV Nurse Home Visitor
NHV Normal Heat Value
NHV Net Heat Value (biomass)
NHV New Haven (Amtrak station code; New Haven, CT)

Yeah, not terribly helpful. Adding "steering" and scrolling down a few hits and I discovered Noise, Harshness, and Vibration. Personally I was hoping for Normal Healthy Volunteer!:D

DanEC 11-05-2017 11:47 AM
Quote:
Originally Posted by patrickt (Post 1432344)
I'm mostly trying to avoid a DNF.;)
That sounds like a good plan - finishing is a good thing. I've had to be towed a couple times in the last 5 or 6 years but not in the ERA so far.

patrickt 11-09-2017 10:02 AM
Resolved
 
Bob was kind enough to ship me out two custom rubber bushings, gratis, thank you very much.;) Here is the result: https://youtu.be/CgxrbdyVe8k

1795 11-09-2017 10:07 AM
Much better!

DanEC 11-09-2017 10:33 AM
Quote:
Originally Posted by ACHiPo (Post 1432357)
Well, NHV is a new one to me, so rather than embarass myself here, I figger'd I'd Google it...
Sorry - Noise, Harshness & Vibration. The nemesis of many automotive designers/engineers. I've got one of those flat-crank, Voodoo powered Mustangs with an 8250 rpm red line. Apparently Ford spent a ton of money for NHV measures on it since it tends to have a vibration issues due to the crank and firing order. Jeez - they even require that the oil filter be torqued to 16 - 18 lb-ft since they have had some of them come off. %/

DanEC 11-09-2017 10:36 AM
Quote:
Originally Posted by patrickt (Post 1432609)
Bob was kind enough to ship me out two custom rubber bushings, gratis, thank you very much.;) Here is the result: https://youtu.be/CgxrbdyVe8k
So no steering rack brace project for our viewing enjoyment this winter huh?:LOL:

patrickt 11-09-2017 10:41 AM
Quote:
Originally Posted by DanEC (Post 1432614)
So no steering rack brace project for our viewing enjoyment this winter huh?:LOL:
Naaah, I don't think it's necessary. Now, if Morris and Cobra #3170 want to fly out and kill a weekend for my benefit, I suppose I might just unlock the garage door for them.;)

Morris 11-09-2017 10:45 AM
Quote:
Originally Posted by patrickt (Post 1432609)
Bob was kind enough to ship me out two custom rubber bushings, gratis, thank you very much.;) Here is the result: https://youtu.be/CgxrbdyVe8k
Glad to see it.......very good experiment and right on the mark :)

But how long will it last ???

RodKnock 11-09-2017 10:59 AM
Now can you fix the beige?

patrickt 11-09-2017 11:08 AM
Quote:
Originally Posted by Morris (Post 1432616)
But how long will it last ???
When I went back and checked my records, I was able to see evidence of deterioration as early as 8 years ago -- a "lucky" picture caught it. When the car was built, the bushings looked perfect from the shots I have of them. But none of those pictures show how the bushing is seated towards the rear of the frame bracket. It is possible that the driver's side bushing was not seated exactly right, which is certainly doable, and that would cause the early failure. Rest assured though that I will be monitoring the wear of the bushings.:cool:

ACHiPo 11-09-2017 12:57 PM
Quote:
Originally Posted by DanEC (Post 1432613)
Sorry - Noise, Harshness & Vibration. The nemesis of many automotive designers/engineers. I've got one of those flat-crank, Voodoo powered Mustangs with an 8250 rpm red line. Apparently Ford spent a ton of money for NHV measures on it since it tends to have a vibration issues due to the crank and firing order. Jeez - they even require that the oil filter be torqued to 16 - 18 lb-ft since they have had some of them come off. %/
Dan,
No problem and thanks for elaborating. I still prefer "Normal Healthy Volunteer".:LOL:

patrickt 11-09-2017 02:19 PM
FWIW, this is the bad bushing that I pulled off the driver's side mount. Yes, this is what it looked like when it was on my car; meaning, my removal did not make it worse by tugging on it, ripping it, etc. When you remove the brackets and drop the rack, the bushings are pretty much just sitting there. Now, the passenger side looked to be in very nice condition, but on closer inspection, there was one small crack in it as well. If you have ERA 759 or later, you don't have this type of setup.

http://38.134.118.239/badbushing001.jpg

DanEC 11-09-2017 02:45 PM
Quote:
Originally Posted by patrickt (Post 1432624)
If you have ERA 759 or later, you don't have this type of setup.

http://38.134.118.239/badbushing001.jpg
Yeah - I haven't crawled under there to refresh my memory but seems it's solidly bolted to the frame now.

DanEC 11-09-2017 02:50 PM
Quote:
Originally Posted by ACHiPo (Post 1432622)
Dan,
No problem and thanks for elaborating. I still prefer "Normal Healthy Volunteer".:LOL:
I kind of liked Nurse Home Visitor. It's probably not too many years off in my future.%/

patrickt 11-09-2017 02:54 PM
Quote:
Originally Posted by DanEC (Post 1432626)
Yeah - I haven't crawled under there to refresh my memory but seems it's solidly bolted to the frame now.
Changing out the steering rack, even with post-Subaru-frame-mount cars (759 and up) is still going to be a medium PITA if you have to do it. The Flaming River rack, I think, is modified by ERA to change not only the lock-to-lock value but also the inner tie rods as well. I think that's right; I know my FR rack probably took as much labor time to modify, so that it mimicked the Subaru rack, that it doubled the original price. The steering racks on the Kirkham cars are also a bit of a PITA too. It must a be a "Cobra thing.":p

ACHiPo 11-09-2017 08:44 PM
Quote:
Originally Posted by DanEC (Post 1432627)
I kind of liked Nurse Home Visitor. It's probably not too many years off in my future.%/
:LOL::LOL::LOL::LOL::LOL::cool:**)

Didn't find a Nurse Ratchet emoticon, else I'd a used it!

strictlypersonl 11-10-2017 05:28 AM
Quote:
Originally Posted by patrickt (Post 1432628)
... The steering racks on the Kirkham cars are also a bit of a PITA too. It must a be a "Cobra thing.":p
The challenge is ending up with minimal bumpsteer. The pivot-to-pivot distance of the rack ends must be within about 1/2" of ideal. Because I really like lots of wheel travel, I had to make the control arms pretty long. That puts the inner pivots close to the car's center-line - and that makes the rack shorter than what is available on later cars.

patrickt 11-10-2017 05:42 AM
Quote:
Originally Posted by strictlypersonl (Post 1432649)
The challenge is ending up with minimal bumpsteer. The pivot-to-pivot distance of the rack ends must be within about 1/2" of ideal. Because I really like lots of wheel travel, I had to make the control arms pretty long. That puts the inner pivots close to the car's center-line - and that makes the rack shorter than what is available on later cars.
... and that sounds like a damn good reason to me. Thanks for the good customer service, like always.:cool:

DanEC 11-10-2017 05:56 AM
Quote:
Originally Posted by strictlypersonl (Post 1432649)
The challenge is ending up with minimal bumpsteer. The pivot-to-pivot distance of the rack ends must be within about 1/2" of ideal. Because I really like lots of wheel travel, I had to make the control arms pretty long. That puts the inner pivots close to the car's center-line - and that makes the rack shorter than what is available on later cars.
You did a great job Bob. I'm always amazed at how well these cars are engineered and drive.:)

ACHiPo 11-10-2017 06:37 AM
Quote:
Originally Posted by DanEC (Post 1432655)
You did a great job Bob. I'm always amazed at how well these cars are engineered and drive.:)
I was just thinking the same thing!


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