Arvinode system reproduction

That is an enlightening piece of information about the science of the resonator tube.

The resonator tube is believed to have been 1" in diameter, and will not be installed on the prototype until after the first test fitting. The picture below are courtesy of Charles Turner and are the only system photos we have, which is why we continue to seek Ford engineering drawings for the system. The Benson Research Library has responded to my formal request saying they don't have them any more and suggested I try Kevin Marti. That shows the difficulty in recreating the system in the absence of drawings from Ford. I am also scouring my library of early car magazines in hopes of finding an undercarriage picture(s).

For those that have inquired about the system in GT configuration see Bob Mannel's "Mustang & Ford Small Block V8", Appendix I "High Performance Options", page I-20 for a Ford illustration that clearly show the GT trumpets as an option.

I will upload WAV files of the transverse system and the prototype for comparison once everything is installed.

[Blocked Image: http://img264.imageshack.us/img264/8158/avinodeexhaustpiecesmt1.jpg]

[Blocked Image: http://img181.imageshack.us/img181/580/originalarvinodetipua4.jpg]

Edited by - round2K on 03/21/2008 19:36:01

Thanks to toolbox for coming up with the technical name for the resonator tube we now have this:

December, 1963 Patent #3,114,432 for a "Sound Attenuating Gas Conduit" was assigned to Edmund Ludlow and Benjamin H Irwin, assignors to Arvin Industries, Inc.

US Patent Office Abstract:

http://patft.uspto.gov/netacgi/nph-Pa…7&RS=PN/7017707

The entire patent is avilable for viewing on line.

Edited by - round2K on 01/26/2008 07:44:44

More news:

The two engineers that designed the system have both passed away, but their sons are alive. One of the sons lives in the house that originally belonged to his father. He is going to look through his father's records to see if there are any drawings or plans. He is also going to speak with the other family members and ask that they look too. He said that at the time the system was presented to Ford it was received with great enthusiasm. He also said that his father had a challenge in getting the silencing tube(s)to correct length for the concept to work.

Edited by - round2K on 01/28/2008 11:24:18

This is exciting news and I am glad to share it with those who have been waiting for the Arvinode system.

The trail has led me to a former Arvin employee who worked there for over 30 years. He spent the majority of that time working in the prototype department and personally fabricated many, many of the Arvinode systems. Between this employee and the son of one of the original engineers there is enormous pride in the Arinvode system. We are going to end up with detailed information right down to the welding.

Here are some of the highlights:

The first thing that was brought to my attention was the use of the word Arvinode. There was an Arvinode system that was more closely patterned along the lines of the Arvin patent mentioned in prior posts, and Arvin developed that sytem in advance of the system for the Mustang. The system in the Mustang was referred to as the Resonode. This should be easy to document if the shop drawings have a title block.

The line that we see along the top of the front muffler is one of the "Quincke" tubes. He recalls that the exhaust pipe and internal tube were both 2 1/4" and the outside diameter of the front muffler was 3 1/2", with Quincke tubes inside and out. The 2 1/4" material was louvered on the inside and exhaust passed straight through without restriction. The entire concept was predicated on the dampening of specific pulses within the Quincke tubes, and there was considerable time and effort expended getting it to work. The size & location of the Quincke tube was the secret sauce. The reason it looks odd to us in the photos we have posted here is because the tube was simply crimped then welded! The rear resonator was there to pick up residual noise and contained two internal tubes which wrapped with fiberglass fabric to dampen any pinging.

The system was in production by 10/15/64 and there were noise complaints within days. There is a sense that those complaints were primarily in small towns. In other words, lead-footed youths drawing just enough attention to be ticketed for noise by the local constabulary. It is probable that the system was changed to avoid the ongoing TSB retrofit costs if people complained. The louvered trumpets were sold as an additional accessory together with the trim rings, and that was ahead of the GT duals that would subsequently replace the Resonode! In other words, there could be authentic Arvin trumpets on cars priot to the introduction of the GT if they were equpped with the Resonode system between October of 64 and April of 65.

There is good reason that the systems are extinct; they were made of carbon steel, not galvanized or aluminized. The reason for that was to facilitate the welding of the various Quincke tubes. (We can resolve this in the reproductions with stainless.) It is entirely possible that NOS systems in later years developed rust internally by simply sitting on the shelf in a warehouse.

Due to the short life of the production use, and the subsequent introduction of the GT in-line duals, there was a surplus of Resonode systems that ended up in parts departments. This would support the experience(s) of those who bought them over the counter in later years.

These guys have a great story to tell and are very sincere in wanting to help us get an authentic system back on the road!

Edited by - round2K on 01/28/2008 22:18:45

<BLOCKQUOTE id=quote><font size=1 face="Verdana" id=quote>quote:<hr height=1 noshade id=quote>

Picture for you.

Not sure this is the Arvinode system, but looks correct.

<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana" size=2 id=quote>

I think you may have a conventional glass pack there. Can't see any Quincke tube on top.