Removing pins from connector? June 19, 2014 02:26PM |
Registered: 9 years ago Posts: 1,699 |
Re: Removing pins from connector? June 19, 2014 02:39PM |
Registered: 10 years ago Posts: 14,672 |
Re: Removing pins from connector? June 19, 2014 02:56PM |
Registered: 9 years ago Posts: 1,699 |
Quote
dc42
You could cut the old fan wires a few cm from the connector and solder the new ones to them, using some heatshrink sleeving to insulate the connections.
Re: Removing pins from connector? June 19, 2014 03:04PM |
Registered: 10 years ago Posts: 14,672 |
Quote
Treito
One small last question: You mounted an air duct to your fan. I am still using this too, especially for my ABS filament and maybe I need this for my unmanageable PLA filament, but the hotend airduct from iamburny does not need this anymore or am I wrong? I have exactly the same fan here (with 7.7CFM and much quieter) like iamburny and his airduct should not have this backwash?!
Re: Removing pins from connector? June 19, 2014 03:19PM |
Registered: 9 years ago Posts: 1,699 |
Quote
dc42
So I value the inlet duct as a finger guard too.
Re: Removing pins from connector? June 19, 2014 04:56PM |
Registered: 9 years ago Posts: 176 |
Re: Removing pins from connector? June 19, 2014 05:03PM |
Registered: 9 years ago Posts: 1,699 |
Re: Removing pins from connector? June 19, 2014 06:13PM |
Registered: 10 years ago Posts: 14,672 |
Quote
Treito
But I did brake one clamp of the inlet duct. With the original heatsink/fan duct the hot-end is unluckily not able to bypass the duet enclosure.
Re: Removing pins from connector? June 19, 2014 06:29PM |
Registered: 9 years ago Posts: 1,699 |
Re: Removing pins from connector? June 19, 2014 06:48PM |
Registered: 10 years ago Posts: 14,672 |
Re: Removing pins from connector? June 19, 2014 08:34PM |
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Re: Removing pins from connector? June 20, 2014 03:14AM |
Registered: 10 years ago Posts: 378 |
Re: Removing pins from connector? June 20, 2014 10:30AM |
Registered: 9 years ago Posts: 1,699 |
Re: Removing pins from connector? June 20, 2014 12:22PM |
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Re: Removing pins from connector? June 20, 2014 12:38PM |
Registered: 10 years ago Posts: 14,672 |
Quote
Treito
At the moment the fan can pass the duet enclosure, but there are only some millimeters left, so I would not have any chance to mount any fan duct.
Re: Removing pins from connector? June 20, 2014 01:01PM |
Registered: 9 years ago Posts: 1,699 |
Re: Removing pins from connector? June 21, 2014 06:08AM |
Registered: 9 years ago Posts: 1,699 |
Re: Removing pins from connector? June 21, 2014 06:43AM |
Registered: 10 years ago Posts: 14,672 |
Quote
Treito
But the new fan has no possibility to counter sink (or how is it called?) so the heads of the screws are on the top of the fan.
Quote
Treito
But it seems to work perfectly. No need for an extra fan duct (which reduces the flow rate a lot).
Re: Removing pins from connector? June 21, 2014 07:03AM |
Registered: 9 years ago Posts: 1,699 |
Quote
dc42
1. Do you have any evidence that your inlet duct reduced the airflow? The airflow resistance provided by the heatsink and the heatsink/fan ducting is greater than the supplied fans were designed for, which is why there is so much backwash from them. A well-designed inlet duct should increase the airflow, by better matching the angle of the incoming air to the blade pitch, and so partly compensating for that.
Quote
dc42
2. Do you really have no backwash at all from the new fan? If so, can you share the make & model?
Re: Removing pins from connector? June 21, 2014 07:35AM |
Registered: 9 years ago Posts: 1,699 |
Re: Removing pins from connector? June 21, 2014 07:37AM |
Registered: 10 years ago Posts: 14,672 |
Re: Removing pins from connector? June 22, 2014 08:12AM |
Registered: 12 years ago Posts: 1,611 |
Quote
dc42
If you are printing ABS, then the advice seems to be that you should block off the fan outlet ducts and provide an alternative escape for the exhaust air away from the print. There have been a few threads about this and some have included alternative designs for the ducts, for example [forums.reprap.org].
Re: Removing pins from connector? June 24, 2014 01:20PM |
Registered: 9 years ago Posts: 1,699 |
I am very sorry, but I did not understand this. Which part should I remove?Quote
droftarts
... or just remove the nozzle duct part of the fan duct.
And mounting the hotend directly to the fan?Quote
droftarts
You can remove both fan parts, and fit a smaller 10mm thick fan too, which is how we ship the same hot end for our Mendel printers.
Of course I did read the guide. That is why I am stucked printing the extruder and the hotend fan duct. All other parts are ready and waiting for the exchange.
Re: Removing pins from connector? June 25, 2014 09:03AM |
Registered: 12 years ago Posts: 1,611 |