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question regarding rega 300B and TD-165 mounting issue

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question regarding rega 300B and TD-165 mounting issue

Postby mitchg » 29 Dec 2005 19:21

Hi, was wondering if anyone could help with a problem I have encountered when mounting the Rega 300B to a TD-165. The supension seems to be "bottoming out" on the side holding the tone arm when I replace the platter. Before the platter is placed everything seems to be floating nicely. First is this a problem and 2) is there and adjustment I can make that will help or 3) do I need to replace the springs?

Any help would be appreciated.
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Postby audioorigami » 29 Dec 2005 20:31

hi mitchg

welcome to VE
sounds like the rega arm is just a little heavyer than the previous arm

its easy to adjust the spring nearest the arm a little tighter

remove the mains lead from wall and disconect the phono leads
remove platter
put arm lock on and stylis cover
remove base plate of the thorns with 4 screws at the feet
once the base plate is off you will see the 3 springs ...the 1 nearest the arm will require a few turns tighter...you may have to adjust all 3 to get the platter level all the way round

any probs let me know

best wishes
j7
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spring loaded screws on the side of the plith

Postby mitchg » 29 Dec 2005 23:01

What function do the two spring loaded screws/bolts serve that are attached to the plinth of the turntable?

Mitch
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Postby audioorigami » 29 Dec 2005 23:06

hi

sounds like you are describing the 2 TRANSIT bolts

they only used when the deck is being boxed up etc...to hold the sub chassis in transit
:roll:

also make sure the rega arm and mounting nut are not fouling the sub chassis freedom to move....the sub chassis should bounce with no friction

as the new year comes close ...i wish u all the best wishes
:)
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transit bolts?

Postby mitchg » 30 Dec 2005 00:47

Should they be removed, loosened or tight?

Mitch
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Postby audioorigami » 30 Dec 2005 07:42

hi

loosened is fine...there is a circlip on top of these 2 screws so they normally cant come out

its the big 3 springs that will make all the difference

best wishes and amy more questions just ask

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Postby ddarch88 » 30 Dec 2005 12:09

Great tutorial on suspension tuning...

http://www.theanalogdept.com/susp_tim_bailey.htm


Dave
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thanks

Postby mitchg » 04 Jan 2006 20:35

Thanks for the input, while I feel a little silly, getting the straight scoop on those side bolts sure helped as well as adjusting the spring tension to level out the deck.

Mitch
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Thorens and Rega arms

Postby rkay5 » 04 Jan 2006 21:58

Hi all, The best thing to do when mounting a Rega to any thorens and what I did on my TD150mkII is mount Linn LP12 springs as they are a little longer and can hold more weight, you many have to use longer bolts .I found on my table is a hell of alot better workings of subcassis and suspension tuning .It is a very good upgrade.Robert :twisted:As I had a TD146 also that I had a Rega RB250 on and has the same subplater as TD165 and they cannot holdup the Rega arm so Linn springs.I had to use longer bolts but all worked out great
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Postby Flat Earth » 06 Jan 2006 05:21

I'd caution against using Linn springs as the TD165 employs the lighter composite subplatter.

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Postby audioorigami » 06 Jan 2006 19:25

Flat Earth wrote:I'd caution against using Linn springs as the TD165 employs the lighter composite subplatter.

Flat


id have to agree with flat here...i got both decks and the :shock: linn platter is sooo much heaver
the thorens springs are fine
...but im sure the linn springs will boost up the bass line (being less isolated with harder springs) ...but will be a lot of work...
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original springs seem to be fine, still tweeking

Postby mitchg » 09 Jan 2006 17:03

I think I will stick with the original springs for the pesent time. They seem to be working fine after tightening them enough to support the additional weight of the new tonearm and associated mounting plate. I have also added a set of Vibrapods which has extend the bass and impoved isolation.

Next tweek:Replace the bottom with either MDF or Plywood, but I will need a decent day to fire up the tools.

Mitch
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