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Help all ye Triplanar Gurus

I received my Triplanar VII U2 from Singapore over the weekend and I may have screwed up big time while mounting the arm.Basically, the screw that adjusts the height of the cueing platform broke in the hole with the screw head coming off,with the result that if I use the cueing platform to lower the arm on the record it seems to descend from Mt. Everest. Manually lowering the Lyra Skala on the record is not good for my health.
Have sent a mail to Triplanar and also the Dealer(Audio Note, Singapore).
I doubt if any A'goners have experienced a similar situation but there is no harm in asking.You have to be particularly cretin like to have achieved what I have done.
Am also unable to align the cart using the Best tractor supplied by my friend Yip in Hong Kong coz the mounting holes on the wooden armband are a bit askew. This can and will be resolved.
Will appreciate any help/ advise to lift my deep depression.
Many thanks
128x128sunnyboy1956
lewm
13,036 posts
 
I know what you mean; I just didn't know what Sunnyboy meant. It should be much less expensive to repair the set screw than to repair the VTA adjustor (which is also a "screw"), so I hope you are correct. Anyway, we all agree he should go to Tri Mai with the problem.
thom_at_galibier_design's avatar
thom_at_galibier_design
729 posts
 
No, you're not losing your marbles Lew. Like Doug, I knew the assembly he was referring to.

It's a tiny set screw, btw, using an .050" Allen wrench.

I suspect that this will have to be helicoil'd. I just checked the McMaster Carr website, and note that stainless helicoils are stocked down to a 2-56 thread size.

Looking at the standard range of set screws, it looks as if the screw in question is a 4-40 (one size larger than a 2-56). I say this because a 4-40 uses an .050 hex wrench.

So, the good news is that the parts exist to do the job.

Cheers,
Thom @ Galibier
lewm
13,036 posts
 
Too bad Herb's up in hifi heaven. He could fix it in 10 minutes and yell at you while doing so. Or he would just replace the whole broken part of the tonearm using something he found on his workbench.
markd51
763 posts
 
I would've assumed as much, that the set screw in question was an Allen Screw.

I would also assume Triplanar provides a compliment of the correct size Allen Wrenches needed for the Arm, correct?

Not to be insulting to our friend here, the original poster, who now has this problem, but I would as well assume Triplanar isn't using Threadlocker, so how does such a thing happen? Did they install the Screw with Gorilla-like force?

I'd probably send the Arm direct back to Triplanar. Even though this could be claimed user-error, something sounds amiss here, that anyone could have difficluty with this, and I'm hoping Triplanar sees this more as being thier fault, if the screw was installed with too much torque, or the threaded Hole was not machined correctly, that one would need such force to lossen, to then strip the Screw. Mark
thom_at_galibier_design's avatar
thom_at_galibier_design
729 posts
 
I just checked further on the McMaster Carr site.

To set the record straight, it's one of two sizes - 3-48 or 4-40. Both sizes use a .050 hex key.

Look at this site: http://www.mcmaster.com/
Search on part numbers: 97705A226 and 92311A089

Cheers,
Thom @ Galibier
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