Thread: DVR3000 Owners, Lend Me Your Ears...

That doesn't sound good at all. Sounds a lot like bearings but not being a nova owner I'm only guessing. Hope it's still under warranty.
Yeah I know, I was no bloody help at all

Cheers
Shorty

Originally Posted by thefixer

Hope it's still under warranty.
Yeah I know, I was no bloody help at all

Actually I ASSumed it was out of warranty because at first glance on Teknatool's site they only talk about a two year warranty. But further investigation tonight I have found the DVR's actually have a five year limited warranty (two years on the electronics) so I will give Carbatec Canberra a call tomorrow and see if they are repair agents or not. The headstock weighs around 40kgs so I don't want to ship it to Sydney if I can help it. I wonder if I can find the receipt...

Like Shorty said....it sounds like the bearings!

Whatever it is, good luck with it! Break out the GMC back-up!!!!!

Cheers,
Ed

I did not take any video of it, but I loosened my headstock and ran the lathe like you did, and it did NOT make any of those noises at all.

Sure sounds like cooked bearings to me.

Good luck with it.

Stu

I'll make ya a bet it's a bearing race. They say about a pin. To test that, could you take a large clamp & clamp from the top of the headstock to the base & tighten the headstock down, then try it. But I'll bet it's a dry bearing & the race is wasted. A loose headstock wouldn't make that high pitched sound. Another thing, could you swing the headstock to 'bind' the pin & then try it? If it were the pin, that would stop the vibration.

does it get really hot?, it almost sounds like the bearing spinning in its housing? definitely bearing something, good luck with it .....bob

Ouch
loose pin my fat A. Too squeely IMHO
but I'd try the other suggestions.

I'm not sure about the response from Teknatool

let us know how you get on
also contact Trend and see what they have to say

Glenn as mentioned I would put my money on the lock pin rubbing against the flywheel.

The detent pin underneathe the lathe floats all the time it is just there to locate the different head angles.

If it was bearings you would get a continual noise but then again the locking pin should do the same.

Take the cover of the back of the lathe and have a closer look at the locking pin and have a closer listen to the bearings.

Carbatec do not do warranty on lathes as they do not sell them, they only sell the Nova chucks.

Thanks Jim. Sent you an email to say sorry I missed your call today (gotta love the man's service!). I just went to the garage and spun the lathe up and when the vibration started I lifted the indexing pin, no change unfortunatly. Looking through the sight panel on the back shows a good clearance of a few milimetres of the index pin from the flywheel. Really wish it had been as simple as that.

Robyn, no heat that I have noticed.

For everyone's info, Teknatool did call me today and want me to remove the headstock to see if the noise is still present with it not on the bed at all as the New Zealund chuppy believes it's a resonation issue. Can only try so I'll pull the headstock off tomorrow and see what's what.

With the lathe running - making the noise - place a large screwdriver or dowell or something to your ear and place it on the housing ( like a stethoscope idea). Move this around and you may be able to get a better location of the noise. ie right end - left end - high up - low down

Hope that helps.

Thanks David. Teknatool also recomended trying out the poor man's stethoscope, so will use that tomorrow if removing the headstock from the bed doesn't resolve anything.

If you're gonna start it up without it being mounted, watch it, it will jump when the power is turned on. Unless it's got a 'soft start' motor. You might have to put a cushion between it & whatever you lay it on so you don't pickup another noise from the vibration between it & whatever it's on. Good luck on getting to the bottom of all this. Does it look like the bearings will be hard to replace? If you do---buy good quality. Then use the old bearings to press in the new ones.

Thanks for the advice, MM. The DVR's don't appear to have a very torquey initial start, but it is something to be mindful of when I do. If it does turn out to be the bearings at the end of all this, I'll be looking to Teknatool to replace them under warranty

Holy snappin duck turds, that is one heavy headstock and an absolute MUTHA to get out on your own.

Well, sports fans, the noise is still there. Particularly around the 1200 to 1500 rpm range and the noise continues when I lift the headstock in my arms (I was being super careful don't worry).

This is also with the backplate and flywheel off, so it was a little nekkid...

I've knocked up another video for the folks at Teknatool and see what they have to say now.

And thank you again for all the replies and advice, it is very much appreciated.

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