Rawnei Posted February 26 Share Posted February 26 It's a general and specific question all in one. The fan in the stock 5A charger for the Lynx is quite loud, I'm looking online for alternatives to switch it out. The original fan in the Lynx is a 50x50x15mm 12V 0.25A DC Brushless Fan, model number is LWYX5015 which I can not find anywhere on the internet. Finding similar fans is easy but the question is what is the min CFM (Air Flow) one can use for a 5A power supply? I have no idea what minimum air flow should be in a device such as this, the whole purpose of the fan is to cool the electronics so air flow feels like an important factor? But it also goes hand in hand with noise. Calling experts @Chriull @RagingGrandpa and others, anyone have any idea? Quote Link to comment Share on other sites More sharing options...
Tomallo Posted February 26 Share Posted February 26 50x50x15 fans are usually way less powerful, the only one that has power draw in the same range as the one you mentioned that I found is this: https://www.digikey.com/en/products/detail/cui-devices/CFM-5015BF-175-423-20/15765131 The CFM of this one reads 19.5 (0.546m³/min), and noise 42.3dB(A), if that helps. In this size I don't think you'll find anything quieter - might be able to undervolt it a bit to match the power with the one you have (down to 3W), and that might help a little with noise. Alternatively, if you are willing to jury-rig a bigger one to the charger, the noise should always improve for same CFM (provided it's comparable quality) if you use a bigger fan. IIRC Sunon are regarded as among the best ones, you can look through their catalog and there should be quite a few options. Quote Link to comment Share on other sites More sharing options...
alcatraz Posted February 26 Share Posted February 26 We won't know until you try a different fan. Be the first to switch and let us know. I'm guessing that a stock fan would be on the safe side so it can pass the warranty period. Quote Link to comment Share on other sites More sharing options...
Rawnei Posted February 26 Author Share Posted February 26 (edited) 1 hour ago, Tomallo said: 50x50x15 fans are usually way less powerful, the only one that has power draw in the same range as the one you mentioned that I found is this: https://www.digikey.com/en/products/detail/cui-devices/CFM-5015BF-175-423-20/15765131 The CFM of this one reads 19.5 (0.546m³/min), and noise 42.3dB(A), if that helps. In this size I don't think you'll find anything quieter - might be able to undervolt it a bit to match the power with the one you have (down to 3W), and that might help a little with noise. Alternatively, if you are willing to jury-rig a bigger one to the charger, the noise should always improve for same CFM (provided it's comparable quality) if you use a bigger fan. IIRC Sunon are regarded as among the best ones, you can look through their catalog and there should be quite a few options. Plenty of quieter ones if you can go lower on the air flow. 😅 Found this one which is 18,7 CFM (0,524m³/min) and 38,1dB(A): https://www.digikey.se/sv/products/detail/cui-devices/CFM-5015V-172-381/7605457 I switched the fan to a very quiet one on my MSP stock charger that I sold long ago but I don't remember how many AMPs that charger was, 3A or 5A? It was this fan and it worked fine: 13,8 CFM (0,386m³/min) 10,7dB(A) https://www.digikey.se/sv/products/detail/sunon-fans/HA60251V4-1000U-A99/6198731 Edited February 26 by Rawnei Quote Link to comment Share on other sites More sharing options...
Rawnei Posted March 1 Author Share Posted March 1 I've ordered the Sunon MF50151V1-1000U-A99, will see how it performs. https://eu.mouser.com/ProductDetail/Sunon/MF50151V1-1000U-A99?qs=EU6FO9ffTwe1QEltnflHcw%3D%3D 1 Quote Link to comment Share on other sites More sharing options...
daniel1234 Posted March 1 Share Posted March 1 Grid behind fan (on lynx) have sharp edges what can create addition noise. Quote Link to comment Share on other sites More sharing options...
Tomallo Posted March 1 Share Posted March 1 4 hours ago, Rawnei said: I've ordered the Sunon MF50151V1-1000U-A99, will see how it performs. https://eu.mouser.com/ProductDetail/Sunon/MF50151V1-1000U-A99?qs=EU6FO9ffTwe1QEltnflHcw%3D%3D Seems like good choice! Definitely let us know how how it goes Quote Link to comment Share on other sites More sharing options...
Popular Post Rawnei Posted March 6 Author Popular Post Share Posted March 6 (edited) Installed the MF50151V1-1000U-A99 just now, it's noticeable quieter while charging, not whisper quiet but more tolerable for sure. Will see how it holds up over time and if charger gets hot, so far outside is only 25c while charging not very hot, could possibly even install an even quieter fan. Edited March 6 by Rawnei 3 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.