The Workbench: Yaesu FT891 fan upgrade

Upgrading the fans in the Yaesu FT 891 to some noctua 40mm fans. A relatively cheap and easy upgrade for the 891.
noctua fans (amazon): www.amazon.com/dp/B009NQLT0M?...
3d printed bracket: www.thingiverse.com/thing:547...

[@jaasperbob]

For those of you wondering. The connectors are JST ZH 1.5mm. The fans are 04010SS-12L-AA-00 and have a similar cfm to the noctuna fans.

[@mikemiles3068]

I pick one up at the Orange Hamfest here in south Texas and I am loving the little radio and I am putting on an Anderson Power Pole a friend made for me. Good video 👍. 73 KV5P

[@SwiftShamisJustus]

Nactua is one of the best if you want high performance and quite fans at the same time. I had no idea they made fans for radios so I’m for sure picking these up

[@Mr_Meowingtons]

they make fans when you make fans you make them in all the standard sizes.

[@Ghostbit]

Nice work, solid upgrade for the radio. Noctua makes good fans.

[@fernandoscrenci3895]

On my radio , I just run heavy duty fans on top of the radio facing down , and also on the bottom facing up !! And keeps the radio very cool!!

[@MicroOutdoors]

Did the mod today along with an anderson power pole mod. -- Great video man. Simple, no surprises and to the point! Only took 25 min to print the part. Did 80% infill PLA+ Thanks!

[@FITFO]

Glad to hear it worked out well for you.

[@marcmarc4906]

Merci your video help me a lot. i m tested before to close the ft891 one fan was not working, just bad connection, now it's OK 73's F4ELQ

[@reidlanham2011]

Very nice video. I have an 891 but have yet to do the fan mod. I am going to check out your powerpole mod. 73, K8JLW

[@Zoidberg227]

CRV is probably the composition of the bit. Chrome-vanadium.

[@THESPORTINGCAMP]

Great work! Keep the videos coming if time allows. 👏👏👏👏👏 73 - W5SWX 😎

[@johngulliver6151]

would be nice if you put the radio into the contest fan mode so we could hear how quiet the fans are at full speed 05-20 menu

[@johngulliver6151]

I've ordered mine they are a lot quieter only thing I see is the speed difference original is 5500 new ones are 4500= 1000 rpm difference airflow is almost the same original is 4.9cfm new is 4.8 cfm Hope this helps anyone thinking of changing the fans out I forgot about the noise origanl is 21.0db new ones are 17.9db

[@oldpreach]

Hi. Any update? Air flow as good? Radio any cooler? Are they less noisy in contest mode when they shift from low to high speed?

[@FITFO]

Haven’t had any problems since upgrading them noise is significantly less and haven’t had any issues with the radio getting hot to the touch anymore in the Texas heat.

[@off-trailseeking3965]

@@FITFO Nice mod! Considering doing this with myself getting into FT-8

[@joebidet2050]

Good job I own 3 ft891 good value for money But i blew ipo att on one Still receives normal ok I was tx on 160m vertical and had it connected to my 80m dipole It was turned off Never thought it would hurt it but it did So be careful with that seems common problem with 991 too

[@MichelPikkaart]

I am concerned about the airflow. I also replace with Noctua fans where I need less noise, but is not always possible. Could you reveal the brand and model number of the original fans please? I like to compare.

[@roscoe1052]

Nice mods you've done to the 891. Do you have any experience with the 857d, or can you point to anywhere where people have done a similar thing?

[@FITFO]

I don’t have any info on that radio, most of this was sourced by finding out the voltage and flow of the stock fans then going from there. I eventually plan on picking up a 857D if I can get my hands on one eventually but until then idk what the inside looks like or what voltage size it’s fans are.

[@MicroOutdoors]

What size and type screws did you use to mount the fan to the 3d wedge?

[@FITFO]

I used the mounting screws that come with the noctua fan. Just typical standard computer fan mounting screws.

[@mykolatsarynny]

Are they 12v or 5 volt, tnks

[@shackwishprice6924]

Sorry when I buy any 2nd hand radios I never buy radios that are moded I dont see the point in these mods it ruins the radio

[@FITFO]

Reasonable thinking, i guess it’s a lot like used cars, I plan on holding onto this one for awhile so I’m not too concerned as I know what has been done with it, something definitely to keep in mind however.

[@oherrala]

A mod doesn't ruin the radio! A well done mod, like shown in this video, is an improvement. Fans are parts that can break and changing to high quality fans is repair work keeping the radio running better. The wedge in this mod is awesome idea and I consider it improvement to original Yaesu solution.

[@terryboyle]

@@oherrala makes you wonder why Yaesu doesn't do this in the ffirst place.

[@VE3TLT]

Run the radio in contest mode, fan runs more aggressive.....