Rega Planar 3 problems with motor speed

[katana]

Well I have a planar 3 that having a few issues.

Firstly the motor seems to slow as your playing a record, slowly get slower as it runs. This seemed to happen after replacing the belt and first happened when cleaning a record with a carbon fibre brush and the record ground to a halt.

So doing a search there mentions a motor upgrade but I was thinking of replacing the capacitor for one from RS components (http://uk.rs-online.com/web/search/sear ... &R=0210522) is it the right one? The old capicitor casing is cracked and brown so thought best replace it.



Don't know what the colours are on the resistor but think its already a 12k ohm one will replace it with a 12k ohm 250v resistor from RS. Is that the correct thing to ask for?

I'll also check that the pulley is actually on the motor pin. What would you recommend to lock the pulley in place?

Thanks for the advice

[Alec124c41]

Have you cleaned and oiled the main bearing?
Alec

[katana]

Have you cleaned and oiled the main bearing?
Alec

Is the main bearing what the platter sits on?

[katana]

Well have gone for a axial 3w 12k ohm resister to replace the current one and i'll replace the damaged capacitor.

Should I check the motor mounting rubber?

[Alec124c41]

Have you cleaned and oiled the main bearing?
Alec

Is the main bearing what the platter sits on?

The platter sits on a sub-platter that the belt goes around. Remove the belt, lift the sub-platter so the spindle slides up out of the main bearing.
Clean out the bearing with a Q-Tip. (House brand knock-offs use shorter fibers that shed.) Also wipe the spindle.
Add about 10 drops of oil. You can use #20 machine oil, 10w30, or something in that area. Don't use WD-40 except for cleaning.
Replace all parts. be sure to wipe up any spilled oil with alcohol, and do not get any oil on the belt.
Your platter should now turn freely.
BTW, Rega motors are deliberately not very strong, and will slow and stop when you try to clean a record with other than the lightest touch. Thus a well-oiled bearing is essential.
Alec

[catascott]

Hello chaps - I know that this is an old thread but I am having this issue - the turntable runs smoothly for 2 or 3 tracks and then the motor slows right down. Did the bearing oiling solve the issue for you?

[Laudanum]

catascott ... If you havent done so already, pull the platter off and then subplatter and bearing shaft out. Check the bearing well for oil. You can clean it in place. You can use a magnet to get the bearing ball out, dont lose it. Clean it and the bearing well and axle/shaft with alcohol and q-tips. Drop the bearing ball back in and some gear oil. 80W90 gear oil (hypoid) was recommended a while back. GP-5 service is most common, find a GP-5 MT-1 service oil and it should be "yellow metal" safe. Dont fill the well. I use enough to cover the bearing ball and also a thin film on the axle. Put axle and subplatter back in place. It will take a few minutes for the axle/shaft to seat all the way back down into place. Check to make sure the subplatter spins freely. If it does, then any other problems will be related to the motor (or associated passive components), pulley (loose on motor shaft) or belt. The great thing about these and similiar tables is how easy they are to fix. All parts are available and the few electronic passive components can be sourced from just about anywhere.

[Frank_Sm]

Hello chaps - I know that this is an old thread but I am having this issue - the turntable runs smoothly for 2 or 3 tracks and then the motor slows right down. Did the bearing oiling solve the issue for you?

Verify that the pulley on the motor is tight before doing anything.

[gdest]

The platter sits on a sub-platter that the belt goes around. Remove the belt, lift the sub-platter so the spindle slides up out of the main bearing.
Clean out the bearing with a Q-Tip. (House brand knock-offs use shorter fibers that shed.) Also wipe the spindle.
Add about 10 drops of oil. You can use #20 machine oil, 10w30, or something in that area. Don't use WD-40 except for cleaning.
Replace all parts. be sure to wipe up any spilled oil with alcohol, and do not get any oil on the belt.
Your platter should now turn freely.
BTW, Rega motors are deliberately not very strong, and will slow and stop when you try to clean a record with other than the lightest touch. Thus a well-oiled bearing is essential.
Alec

Hello.
I'm new to this forum.
I have Planar 3 (1984)
I oiled like you described, the sub-platter turns freely.
but when I turn on the motor, the belt is turning with motor.
And while sub-platter with platter gain speed the belt is rubbing on sub-platter(platter and belt have different speeds)
there is a noisy sound of friction.
Is it normal?
What could you suggest something?
I hope I made myself clear.

[bacobits]

It sounds like it all needs is cleaning, it is slipping?
Clean the motor pulley, belt, and rim of the sub-platter.
Carefully not to drip all over, use some denatured alcohol on cotton swabs and a lint free cloth.
Check the motor pulley did not let go and just spin on the shaft. These are glued and occasionally get loose.

[Alec124c41]

The motor turns at speed almost instantly. The platter does not, so some belt slippage is inevitable.
Give the platter a push when you are starting up.

Cheers,
Alec

[Laudanum]

This has basically been covered but to simplify ... sounds as either the belt is worn/stretched and needs replacing, and/or the motor pulley is loose and slipping on the motor shaft. Super glue is often suggested to fix the slipping pulley. Belts are readily available at local or internet rega dealers (and elwehere).

[gdest]

Thanks for the quick answers.
I want to add some details.
The belt is new, made by Rega.
When the platter's speed is 33rpm there is still sound of slippage.
I think it's between the motor pulley and the belt.
I didn't clean the pulley with alcohol because I don't have it right now.
Do you think the cleaning with alcohol will solve the problem.

[Laudanum]

Is the motor pulley loose on the shaft?