External motor’s connection with the speed of my t

just another idea, i use mapleshade isoblocks broke in half under my motor, three pieces, the rubber grabs the maple shelf for a good grip and also isolates very well, JMO

Thank you! that is waht i needed to hear.

I use the larger wood 'table from AS. Near as I can tell, the motor has not moved a mm since I set it up. However, this is a much larger motor than the smaller wood model you own. I can tell you from experience with an outboard motor on a Transrotor Sirius- that I also own- that a level surface is critical to proper performance. For a whle, the motor was set back from the table on a surface that was app 3 degrees sloped. Speed consistency was a complete mess. I don't know that you need a base, but try to make sure that the motor and 'table are at least on a flat surface.

Good Luck,

Marty

By "adjust the motor" do you mean physically nudging it to keep the belt taut? That's what Dan (and I) took from the wording of your original post.

If you have to do that every day it's not normal. Once my motor is set up right it stays that way for weeks, or until I bump it by mistake! ;-)

It's not unusual for a new drive string to stretch a little from use, but not every day.

A visibly or audibly vibrating motor is not good. I would ask other AS owners if theirs do that. If the table is new, I would report it immediately to the dealer and to AS. You should be covered by the AS warranty and the dealer may have their own refund/exchange policy. The latter may have a short time limit. Don't miss that window if there's any chance you'll need it.

Oh yah, A PS Audio Phono Stage, with Colorado XLR interconects

So we all think it is not a defective motor (sorry I'm new to T.T.'s)? Do any of you have to adjust the motor when you sit down for an evening of playing records? The motor i have does vibrate a little bit when in use. So the motor slipping might be a problem. The surface that the player is sitting on is not the best set up. I should invest in a base. Any ideas?

My set up is a follows:
Acoustic Solid Wood Classic
Blue point #2 needle
Rega RB 300 toe arm
HSR record clamp
Living Voice Record mat.

Dan_Ed's explanation sounds right to me and yes, motor slippage is a potential risk on all tables with outboard motors. After all, they won't work unless there's some tension on the belt, which of course tends to pull the motor toward the table. My Teres Reference motor is quite a bit heavier than yours, but it still slips if it's not set it up right. Dealing with this is the (small) price you pay for isolating your plinth, armboard, tonearm and cartridge from motor vibrations.

Putting a different base beneath your TT might help - or it might make matters worse. It depends on whether the top surface of the new base is less slippery or more. IMO there are more important considerations than this when chosing a TT base or stand.

Dan's trick might work. So would a zillion other variations. You just need to increase friction between the motor feet and the surface they're sitting on without introducing so much compliance (aka, sogginess) that you sap dynamics. Nothing more to it than that. Why not experiment and learn? When feasible, I find it effective to try a few DIY fixes to make sure I understood a problem before throwing money at solutions which may or may not help.

I would hate to rig a make shift solution to the problem. After all the money I have spent in the TT set up… It does just not sit right.

Having a nice looking and costly rig like yours is one thing. Getting the best music from it is another. For example, I use a $4K tonearm that's regarded as among the world's most capable. Nevertheless, I've improved its performance by the application of knowledge, experience and 50 cents worth of O-rings from Home Depot. Does that sit right? It does with me. I've learned new things, I've improved the sound of my music, I've shared the joy of those improvements with others.

If your Classic Wood has the standard Rega RB-250 arm, there are innumerable tweaks which will take it to higher levels of performance. The single most effective involves two lead fishing weights and a drop of super glue. They look like hell but no one who's tried them has ever taken them off. Another tweak, which I publicized, involves a paper clip. A third, which I developed, involves those O-rings. If this sort of intimate working with your rig, "doesn't sit right", your rig will always look clean but you'll miss out on alot of great sound, and alot of fun too. YMMV, of course.

Best of luck with your motor,
Doug

What is it sitting on now? Sometimes the best results are from simple little tweaks. I'm using thin weather stripping under the motor pod on my Galibier to keep it from sliding on the polished granite shelf I use.

Thanks for the response. I wonder if I should get a base for my TT. Do you think that would stop the problem? I would hate to rig a make shift solution to the problem. After all the money I have spent in the TT set up… It does just not sit right.

Sounds like your motor pod is skating towards the platter. If I understand you correctly. A simple try might be to put a few pieces of masking tap under the motor pod contact points. It might be enough added friction to stop the skate, assuming that is what is going on.

Best of luck!