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electricpete

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Reply with quote  #46 

I'm on the other side of the argument.   I think the alignment eliminator is mechanical (like tcvj), not elastomeric. I'll tell you why. 

I got my first perceptions of the coupling based on the tcvj mechanical / moving-part coupling  video from back in 2009.

Quote:
"My name is Jim Crossafon (sp?) and I'm one of the directors of Thompson Limited, a wholly Australian company, whose sole purpose at present [2009] is the development and commercialization of this device"

I have no way of knowing what’s inside the boot in the other more recent video, but my first guess would not be that they jumped ship to a completely different approach with no mention whatsoever of their new technology.

Additionally, Google just led me to a distributor site http://pija.co.id/thompson-coupling-alignment-eliminator/  where it states  about the Thompson Company Alignment Eliminator: “What is TCAE ? ….Mechanical flexible coupling"

That distributor site links to reasonably current Thompson literature dated 2019 like this:

http://pija.co.id/wp-content/uploads/2019/04/tcae-cataloque.pdf

If you look at the red and grey logo for Thompson in the upper left hand corner of page 1 of that literature linked directly above, you'll see what I think it is a simplified representation of the same mechanical device we saw back in the 2009 (tcvj) which has been tweaked to show the letters TC (Thompson Company).  Edit - Ok, I admit the logo is a weak argument. 

I agree the axial play looks a little odd.  Maybe the mechanical device has more axial play than our intuition would tell us it should, or maybe we're just seeing bending from the side where it looks like play. 

electricpete

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Reply with quote  #47 
Even stronger proof that it's not elastomeric, take a look at the Thompson "about us" page:

Quote:
 The trademarked Thompson Coupling Alignment Eliminator (TCAE) ™. Our compact design coupling is achieving great success in applications such as pump/motor drives where minor misalignment angles prove disastrous for other traditional couplings (gear/grid/elastomeric etc).


IF they  were using elastomeric technology in their own alignment eliminator coupling,  they wouldn't say that misalignment is disastrous for elastomeric couplings .
Curran919

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Reply with quote  #48 
Damn, this e-sleuthing is getting interesting. At what point should we just pop off an email and ask? haha.
electricpete

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Reply with quote  #49 

I think at least one person reached out to them, but those pesky Australian fires might be slowing the response. 

Up until now I haven't been tuned into the fact that the company currently offers two distinct product lines. TCAE (with the boot/bellows) and TCJV (mechanical device shown in 2009 video). 

My guess is that the TCAE probably does not include a carbon copy of the TCJV inside the bellows.  The TCJV only handles angle misalignment, while the TCAE handles angle and offset misalignment.  So you’d need 2 TCJV’s separated axially inside the TCAE to handle offset misalignment… but to me it doesn't look like there's enough room for that.   I still think  the TCAE is mechanical (based on their historical  / stated product focus, and reading between the lines of their literature where they trash other types), but it’s something different that we haven’t put our eyes on yet. Whatever’s going on inside that TJAE bellows, they do seem a little secretive about it.

Sinski

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Reply with quote  #50 
I live in Brisbane and have never heard of them and I doubt the fires we had here have anything to do with response times as they are pretty much gone now around here at least. Though the absolute dumping of rain we have had over the past couple of days is starting to cause flooding with more to come. Would be interesting to see if they can back up there claims.
Curran919

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Reply with quote  #51 
Okay, I just asked them.

They sent me an exploded view. Yes its a boot. No its not a universal coupling inside (not the TCVJ). Unfortunately the forum is jerking me around and keeps giving me errors when I try to upload something. But on the inside is a splined shaft that looks almost like a gear coupling? but also perhaps some more elastomeric elements, but the materials are not indicated.
John from PA

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Reply with quote  #52 
Just an FYI, click the “Defence” button along the upper part of your screen.  The company was apparently established in 2000 and has quite a list of achievements.  There are also some images as part of case histories under “Testimonials.”

Seems to me they likely can “...back up there claims”, at least within the design parameters of the device.
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