Pink Triangle Anni Motor (Revisted)

by **horfield** » 30 May 2011 02:35

Sorry, to keep posting on the forum. I've managed to get my Anni up and running. One thing that I've noticed is that looking under the platter i've noticed that the motor pully is skewed toward the spindle (that is, not level with the top plate), even when not running. I've heard that the Anni motor is attached to the sub-chassis by rubber mounts, but surely not rubber mounts only (seems a bit flimsy). Is this normal for the Anni. Unfortunately, I have been unable have not found a way to have look under the sub-chassis directly to see if anything is loose. Unwise, the everything seems fine. Any thoughts etc. from Anni owner would be helpful.

Neale

by **rolleye** » 30 May 2011 10:28

Does the motor pulley wobble? if it does the shaft could be bent....if not then one of the 3 rubber grommets/screws? could have come adrift.

However assuming your Anni runs at the correct speed and the belt doesn't slip off it might be best to leave well alone rather than ripping it apart.
I'm sure there are other Anni owners out there who have removed the motor and if it comes to it, will no doubt be able to provide the technical know how.

by **rolleye** » 30 May 2011 10:34

Another thought just occurred, are you using the right size belt? ie its to small so that it pulls the motor pulley over slightly??? does the pulley sit in the same position without the belt? might be worth a try.

by **loonieboo** » 30 May 2011 12:43

Hi Horfield , the base is part of the plinth and fixed you lift the sub chassis out from above what serial no is yours as early ones the motor is mounted on a board that has 3rubber grommets glued to the sub chassis sometimes this glue fails and leads to the motor lean but like rolleye says if it is speed stable and sounds good I would leave it be.usually you get speed issues if it's bad .

by **horfield** » 30 May 2011 22:20

Thanks guys,
The serial number of my PT Anni is 139. So I guess that it's one of the early ones. The PSU with it has two external speed trim knobs for 33/45rpm, which is nice. The speed seems to be stable according to my strobe and the slight lean on the motor pulley does not seem to interfere with the platter in anyway. As for the belt its a genuine FF belt and unless the Anni is a different size than other PT's it should be fine. The pulley does not seem to wobble and rotates smoothly. For the time being I think i'll leave things as is. The 'acid test' will be when I receive the new arm board from Emporium shed?
Just a thought, it would be great if someone could provide a service manual for PT's (with pictures). Perhaps something like 'PT's for dummies', or how to 'How to take your PT apart and put it back together again without losing your mind'. I would happily pay for this!
N.B. Note for Rolleye - the arm board provided is perfect with all the holes spot on, thanks.

by **rolleye** » 31 May 2011 15:29

No problem Neale, if you havent' been able to source the white spacer let me know, i can make something similar for you from 10mm foamex.... added to what you already have it would be approx 1mm higher/taller than an original Anni armboard....let me know.
Ross

by **Cyclopse** » 02 Jun 2011 11:43

I have an unused original Funk Firm white spacer if this would be of any use.

Thanks

Cyclopse

by **tim_bissell** » 02 Jun 2011 15:05

Cyclopse wrote:I have an unused original Funk Firm white spacer if this would be of any use.

Thanks

Cyclopse

I could do with one if this one is going spare!

cheers,

Tim

by **horfield** » 04 Jun 2011 11:48

Cyclopse,

Thanks for the offer of the spacer. Apparently, and according to Emporium Hi-Fi the white spacer for the Anni is not as deep as those for other Pinks, so if Tim would like it he can have it. Also, Emporium have the spacer for these as a stock item. I have been informed by them that they definitely will be able to get the Armboard/Spacer for me, but it's a special order so will take a minimum of 2 weeks. Regarding the motor issue I have managed to cut up an old Pink belt and place a couple of folded up pieces underneath the wooden 'thingy' that surrounds the motor, which have straightened the motor pully.
I would still be interested to find out from Anni owners how to take the sub-chassis out (without trashing it) so that I can perform a more permanent fix?

by **loonieboo** » 04 Jun 2011 20:47

Hi , remove the platter then lift off the top plate then you need to desolder the motor power wires from the 5 pin din plug remember to note the pin sequence then remove the two plates either side of the sub chassis they have two Allen bolts each this will give you access to the side suspension bolts they should be loose and slide out. then unbolt the rear suspension from it's hanger then the sub chassis should lift out. Regards

by **natty_dredd** » 07 Jun 2011 00:58

Hey, my Anni is 130! Very close... mine doesn't have the external speed adjustment though - cleaner lines but have to open it to adjust.

I had a lot of wow on my Anni and it was one of the rubber mount's studd that had come unglued from the circular MDF that the motor's bonded to - the motor was lifting and the servo circuit was having a hard time.

No need to desolder the motor wire!

Just undo those suspension guide plates and and unbolt the rear suspension.

The subchassis will be free apart from the motor wire so you can put it on its side..

The rubber mounings have studs at each end - one end is glued to the balsa part of the subchassis (you can see them fron the under side) and the top studs are glued to the underside of the circular MDF plate.

See if they are loose anywhere - could be that previous belts have given the motor a lean to one side.

You can poke out the studs from the bottom with a punch and hammer and then pull them out of the MDF with a bit of a twist, trying not to rip the rubber, only gripping the stud part.

These studs are the exact same studs as found on the LPT motor mounting and I bet are still a common item in those 'small mechanical part' catalogues that always allude me - where can you buy this type of thing; springs, fixings etc?

On my late Anni, the MDF circle is replaced with a steel circle with bolts on - no dodgy glue and easy to get to the motor.

by **tim_bissell** » 09 Jun 2011 16:05

natty_dredd wrote:These studs are the exact same studs as found on the LPT motor mounting and I bet are still a common item in those 'small mechanical part' catalogues that always allude me - where can you buy this type of thing; springs, fixings etc?.

I'd love to know as well! rs-online.co.uk has some useful bits (standoffs, studs etc.)

-- Tim

by **rolleye** » 09 Jun 2011 23:23

these might be what your looking for although i can't guarantee they are correct size ect..... http://uk.rsonline.com/web/search/searc ... &R=7203297

by **natty_dredd** » 10 Jun 2011 00:21

Similar but not quite - the rubber bits are far too thick - the ones we need are more like the shape of these:

THESE

but made of the same stuff as your link instead of the plastic the above are.