Black & Decker DN339 Variable drive bandsaw
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- Опубліковано 24 сер 2024
- A short video on the variable drive of a bandsaw
I picked this Black & Decker DN339 up at an auction, it had a problem with the variable speed drive, this turned out to be simply because it had been standing for some time and needed lubricating.
But I thought it might be worth showing how this variable drive works, it’s simply a sprung loaded v pulley that opens/closes with tension resulting in a smaller/larger diameter of the drive.
This is the mechanism, it’s simply sprung loaded with a thin v belt, It will cut metal (although I’d not use it for much more than brass) but I have found it excellent on aluminium, plastics & of course wood.
I know it’s a bit of an odd video for me but I had not seen a drive like this before on this scale.
Anyway, hope you find it as interesting as I did!!!
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Thanks for sharing that important observation 👍
This is just what I was looking for, thank you.
Thats great
I've just bought one of these in an auction, the speed controller is just like the CVT transmission you get in a modern scooter, very clever on a black and decker machine :-)
Yes, a nice idea & works well
I guess seeing it had a problem you got it cheap - well done. I always say that the best tool I ever bought was my little bandsaw - so much easier to de-gate castings with than a hacksaw! I suspect that soon you will be agreeing with me 😊… Martin
can you make a video on how to install a blade to this particular machine?
HI,
I am sorry to say I have long parted with this tool.
However from what I remember, there is a blade tension screw on the top. deadjust so the blade becomes slack and remove the blade.
@@themotorcyclingclub i managed to get the blade on mine today however its cutting plastic then jams and stops from force would this have something to do with the top adjuster what way would i go to tension the blade more clockwise or anticlockwise?
thanks so much for the advice and help
What's the thickest depth of wood this bandsaw is comfortable cutting?
Hi Jeremy.
I no longer have this unit as I have a larger saw now.
The largest I used it for while I had it was about 2" round & I took it gently.
Can you tell me what size blade fits thisbandsaw
Sadly I cannot as I nolonger have it, however If you google the saw you will find blades for it
Hello which part required luberecaiting please
The only part I lubricated David was the spring variator that is mounted on the end of the motor shaft (seen 3:06 in the video).
Other than that, just a wee bit of grease on threads.
I was given one of these bandsaws sometime ago. I have just ordered a new blade for it. I have stripped it down as the vaiable speed rod is hard to operate. I have a question, is the drive belt suppose to move over onto the other pulley when you torn the rod?
I think the other pully is for the non variable speed model (you change speeds much like you do on a pillar drill).
On the variable speed version only the motor pulley changes .
What size blade is required for the dn339 model please
@@tiowny Just go on eBay or search for "dn339 saw blade"
BTW according to the listings that come up it's 59 1/2"x1/4" blades are about £10 each
What happened to the dulcet tones of your normal narration. Text was good but reading moving text is a pain compared with just having a listen. Looks like a nice unit to have in the shop.
I wS going to do a voice over but there was a lot going on. Easy to put txt on.
Its not as if its a long complex video.
That will be coming soon
Questo motore ha il condensatore
Questo motore ha il condensatore = This motor has the capacitor?
Hello, I am sorry, I have no idea about the motor operation it self = Ciao, Mi dispiace, non ho idea del funzionamento del motore in sé
There is a capitor fitted inside the switch
@@winnit54 I am not sure about that, I think there is an "on" light but I cannot say with any certainty.
I have now sold mine.
@@WarGrade Thankyou for your reply