TTW MOMENTUS MOMENTUS "The MONSTER" Rim Drive


I must say interesting indeed - anyone happen to have one or had a listen? Any initial impressions

Some specs ...

- 99.999% pure Copper platter weighs in at 88Lbs 40 Kg's

- Total weight of the whole table tipping the scales of 200-220Lbs

- Bearing Shaft is Pure Micro Grain Carbide .5 inch diameter x 1.5 inches deep

- DC Servo Direct Rim Drive Super Torque with 24,000 pulse drive control (each revolution counts 24,000 points for accuracy and the MOMENT of inertia combined with the rim drive provides perfect rotational accuracy
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Showing 3 responses by lewm

TTW has come in for more than a little criticism on this forum, mostly from one or two dissatisfied customers. I am not a customer, but I always thought they deserve a little credit for their "all-out" approach, whether I always agree with their design decisions, or not. (Usually not.) The Momentus does indeed look to be very well built. I am just not a fan of rim drive the way they do it. However, in the Momentus they have isolated the copper platter from the driven part of the platter, which should be good.
Bydlo, You have specifically catalogued all the things that I also do not like about rim drive; I just did not wish to go into gory detail. TTW claims to have addressed at least most of the issues in the Momentus.
FWIW, More than a few tonearms are made by Jelco to be sold under other brand names. I've never owned a Jelco or a Jelco clone, but many speak well of their better efforts. I am not familiar with the tonearm, but why do you say it is "silly".

If you're going to build a tt out of alu, brass, and stainless steel (and probably other metals and alloys), don't close tolerances and high quality machining go a long way toward resonance control?

My issue on the face of it would be only with the drive system.