Thread: Upper wheel and tension spring crack noise

If it got a bit better when you greased the slides then it might be worth pulling them apart and looking for an obstruction. Otherwise clean, sand, re grease and re assemble.

Hello,

Thanks for the advice. I'll give it a try and see if it helps.
Since it's my first bandsaw, I don't know if it's something usual or not. It's new. Do you think there is a potential problem I should notify the manufacturer of ?

Benji

Certainly not usual, do as Len says and see how it goes.

Hello,

I dismounted everything and put a coat of lithium grease. I didn't improved. Do you have any other ideas ?

Regards

Benji

When you say you are adjusting the tension, is that the blade tension release lever, or the tension screw adjuster?

Hello

I use the screw

Benji

Being newnit will still be under warantee, give the compeny you bought it from a call & get their advise.

Could it be that the spring is catching on somthing then banging into its seat when a certain amount of tension is reached ?

Hello,

Originally Posted by tdrumnut

Being newnit will still be under warantee, give the compeny you bought it from a call & get their advise.

If think you're right and that's what i'll end up doing. But you know, when it's hard to describe a problem, it's not easy to convince the manufacturer he needs to do something. It'd rather like troubleshooting and see what part is causing trouble to be able to request the good part. I don't know if it's the same for you in australia but very often with those asian made machines, the supplier wants to go quick. He may even propose to replace the machine. I'd rather just have the good part replaced since the rest seems pretty ok

Originally Posted by Toymaker Len

Could it be that the spring is catching on somthing then banging into its seat when a certain amount of tension is reached ?

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I've tried looking at this and cannot see anything like this. But this gave me the opportunity to look very carefully at what was happening when the tension is being released. What i noticed is that when i hear and feel the sudden release i see the bottom part of the upper wheel coming in my direction as something promptly unlocked. I know that when the tension is adjusted the angle of the wheel is changed. What causes this and would make this exagerated on my saw ?

Regards,

Benji

Is it possible for you to take a few close up photos of the mechanism from different angles and post them for us to have a look at. I looked at the owners manual for the 18" Riken that you referred to, but the adjuster looks different to what I can see on your saw in the link.
The angle of the top wheel should not change as you apply tension on the blade. Maybe something is missing in the adjuster or not fitted correctly.
Did you have to assemble it, or was it complete when you got it?

Here's one I have had a look at and you can see how the slide casting catches on the back cover of the saw. The previous owner has drilled a bit of clearance to allow the slide to come down.

Originally Posted by Treecycle

Is it possible for you to take a few close up photos of the mechanism from different angles and post them for us to have a look at. I looked at the owners manual for the 18" Riken that you referred to, but the adjuster looks different to what I can see on your saw in the link.
The angle of the top wheel should not change as you apply tension on the blade. Maybe something is missing in the adjuster or not fitted correctly.
Did you have to assemble it, or was it complete when you got it?

Hello,

Here are the pics.




It was already assembled when I received it.

Benji

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Even with those photos it is difficult to determine what the problem could be. Is it possible that the bottom of the large spring could be catching on something.
When the noises happen, does the wheel jump, or do you just hear noises?

Hello,

When i here the noise while detensioning, i see a kind of jump of the wheel toward me.
I don't see the spring catching anything. There is friction between the flat block of metal under the spring and the u shaped piece supporting the whole system but i put many grease here.

Regards.

Benjamin.