Roksan Radius 5 vibrations

[stairpost]

Hi AOSers,

I have a Radius 5 wood version, I am really enjoying it, in fact i'm loving the sound of it, but there is a noticeable vibration issue, you can feel it when you touch any part of the deck or arm, so as a result pitch stability is pretty poor. I've got it sitting on a marble chopping board and under that are rubber isolation pods. I have a feeling it might be the belt, it's the round type rather than the flat belt, I can see how if it has a kink or twist in it that it could cause the platter to vibrate, but I can't be sure if it is twisted when I refit it.

Is this a known issue with this deck or am I doing something wrong?

It's got a Rega arm with a Tecnoweight, it's the most consistently enjoyable sounding deck I have owned so I would like to try to resolve it rather than sell it.

Cheers

Rich.

[struth]

Try spinning platter with belt off. Will split the deck in two as it might've the bearing or belt side

[walpurgis]

Belt I'd guess. As they age they stretch, more in some parts than others and can cause vibration due to uneven tension.

[stairpost]

Try spinning platter with belt off. Will split the deck in two as it might've the bearing or belt side

That's a very useful idea, why didn't I think of that :)

Cheers Grant.

Rich.

[stairpost]

Belt I'd guess. As they age they stretch, more in some parts than others and can cause vibration due to uneven tension.

I shall give Grant's Idea a try, then I'll pretty much know for sure.

Cheers Geoff

Rich.

[struth]

can also check motor without belt for vibrations, but its likely to be belt.

[stairpost]

can also check motor without belt for vibrations, but its likely to be belt.

Well, it's not the belt, the vibrations are there when the belt is not attached, I noticed the motor makes an audible hum too.

You can feel the vibrations on the top shelf of the rack.

[bosa]

Have you called Roksan? Their repair costs are not cheap but you could see if they are willing to offer any suggestions? I had the same TT, now my daughter has it (lucky girl) and it has been a great success.

[struth]

I have read that the motor has been a weak point on older models. replacing motor seems to fix this. best i can help with

[jandl100]

The vibration and speed issues may be separate.

I reviewed a Radius 5 mk2 for Hifi Pig a few years back and noted speed instability.
A comment by a Radius 5 owner at the end of the review offers a fix for the speed variability.
Well worth a look. :)

http://hifipig.com/roksan-radius-5-mk2-turntable-nima-tonearm-corus-silver-cartridge/

[stairpost]

The vibration and speed issues may be separate.

I reviewed a Radius 5 mk2 for Hifi Pig a few years back and noted speed instability.
A comment by a Radius 5 owner at the end of the review offers a fix for the speed variability.
Well worth a look. :)

http://hifipig.com/roksan-radius-5-mk2-turntable-nima-tonearm-corus-silver-cartridge/

That was very interesting, thank you. I shall try the double sided tape fix, I'll do a before and after test to try to discern any difference. I naturally assumed the 2 issues were related and that the vibrations were causing a vibrato effect on long notes, hopefully not.

Cheers

Rich.

[stairpost]

I have read that the motor has been a weak point on older models. replacing motor seems to fix this. best i can help with

I have been looking at the Origin live motor upgrade, but as much as I enjoy this deck I am still working towards my end deck which is a Gyro, so I think that sort of money would be better kept and put towards that in a few years time.

[stairpost]

I have read that the motor has been a weak point on older models. replacing motor seems to fix this. best i can help with

It looks like the Origin live DC motors start at £255, I did initially think that as much as I like this deck I didn't want to spend too much on it, but as I have a Linn LK140 going spare the sale of that should take care of the best part of the new motor cost.

It might all work out after all :)

[struth]

bound to improve is value and sale ability too if you go for a gyro down line

[stairpost]

Just to cap off a thread.

The problem seems to have been in the risers I fitted to allow the use of my cart. I obviously didn't make a great job of it as removing them has made a big difference, pitch wobble issue fixed, it only took replacing the deck to get it sorted :)