deskthority

Hi,

I will update this later today as I finish.

I was thinking about this thread:
viewtopic.php?f=7&t=23394

In terms of model F sound dampening.

Then today I saw this thread with a discussion about the existing superfloss model F dampening:
viewtopic.php?p=463154#p463154

THINK:

I have a model F AT that is not assembled that I was thinking of doing the space bar mod. I got part of the way through and I thought... I really like the XT space bar. I honestly would rather keep it. I dremelled part of it away but, nah XT spacebar.

So I thought, how can I have fun with this F AT?

I will do a sound comparison! So right now I have assembled the the Numpad flippers on the AT with foam bottom plug dampened flippers like on the AT&T buckling spring and I will use the super floss on the F1-10 keys on the left.

Then I can see what PING reducing method is best.

I will film a sound comparison tonight, just assembling now. Here are some images of the process.

Basically if this sound dampen method works, the main benefit is that its pretty easy/fast to do and you can use the same foam from the rest of the restore process.

Basically you can use the same foam you use to cut the Model F foam mat, so this seem easy.

Anyway, Here are some photos. Hopefully done soon.

how about a small blob of silicone sealant on the underside of the barrel assembly? I've got pretty good noise abatement out of that. There's even a post somewhere around..

DMA wrote: 27 Apr 2020, 08:31 how about a small blob of silicone sealant on the underside of the barrel assembly? I've got pretty good noise abatement out of that. There's even a post somewhere around..

Hi that is interesting. Do you have a photo of that, not sure where you mean.

Also I mostly put the board together. I was having issues with the big spacebar so for now I have a 4 key comparison sound test.

https://youtu.be/fLq2PKu_uWY

The order of keypresses is

3x normal click,
then 3x super-floss mod click
then 3x one-foam plug click
then 3x two-foam plug click

Repeats again.

The foam as mentioned is simply the same foam used in the F AT restoration, ie Michaels foam.

I think in general the sound is comparable to the floss mod. It is pretty fast to do this mod if you have a leather hole punch too. You dont even need to disassemble the board, just use tweezers to insert and a metal stick to push it to the bottom.

An advantage the floss mod has over foam-plug is removing the floss is much easier. Simply tweezer it out. For foam-plug you can pull the springs out of the barrels and remove the foam, but obviously that could occasionally result in a bent spring when putting them back etc.

Over all I think it sounds pretty good and will try to finish the full assembly today for more comparisons.

SneakyRobb wrote: 27 Apr 2020, 16:30

DMA wrote: 27 Apr 2020, 08:31 how about a small blob of silicone sealant on the underside of the barrel assembly? I've got pretty good noise abatement out of that. There's even a post somewhere around..

Hi that is interesting. Do you have a photo of that, not sure where you mean.

DMA wrote: 27 Apr 2020, 18:33

SneakyRobb wrote: 27 Apr 2020, 16:30

DMA wrote: 27 Apr 2020, 08:31 how about a small blob of silicone sealant on the underside of the barrel assembly? I've got pretty good noise abatement out of that. There's even a post somewhere around..

Hi that is interesting. Do you have a photo of that, not sure where you mean.

Hi, that is an interesting method. I was more focused on a comparison to the floss method specifically targeting ping.

Regardless If one wanted to reduce noise I imagine that would take away some of the upward click noise. I wonder if there is an audio comparison with the sealant. So I think that is also a cool thought.

SneakyRobb wrote: 27 Apr 2020, 19:27 Hi, that is an interesting method. I was more focused on a comparison to the floss method specifically targeting ping.

Regardless If one wanted to reduce noise I imagine that would take away some of the upward click noise. I wonder if there is an audio comparison with the sealant. So I think that is also a cool thought.

I found that ping is a minor contributor - at least on my foamless F122 testbed. The rebound is something like +12db to the actuation loudness

Interesting topic!

I just had a go testing the floss mod on my F77;

DMA wrote: 27 Apr 2020, 20:52

SneakyRobb wrote: 27 Apr 2020, 19:27 Hi, that is an interesting method. I was more focused on a comparison to the floss method specifically targeting ping.

Regardless If one wanted to reduce noise I imagine that would take away some of the upward click noise. I wonder if there is an audio comparison with the sealant. So I think that is also a cool thought.

I found that ping is a minor contributor - at least on my foamless F122 testbed. The rebound is something like +12db to the actuation loudness

Ah got you. Interesting notion. I will actually try this thin foam sticker material I have here. I need to disassemble the F AT to fix the spacebar, so I'll put the foam on the top of several flippers.

Hopefullly it will dampen the up click a bit. I don't know if I will personally like the result of less noise, but I will do it to experiment/fun.

Twst wrote: 27 Apr 2020, 21:12 Interesting topic!

I just had a go testing the floss mod on my F77;

Spoiler:

Nice video!. Yes I think the floss mod does work very well and is quite simple. I actually just got the F AT back together to make a comparison video.
The 10 left side function keys are Super-Floss moded

The alpha block is stock and of course very ping-y. (Space bar needs to be redone, is wobbly sad)

Numpad is mostly 1 piece of michaels craft foam, Except these 4 numpad keys -

Numlock-key is stock
Key to the right of numlock (F9) is floss mod
Key to right of that (blank) is 1 foam piece
Key to the right of that (blank the "top right key") is 2x foam pieces


The top right key has the 2 pieces stacked of foam and I think it is probably the best at eliminating the ping without having any dampening on the actual click feel. It might just be my imagination but I find the floss mod to add the slightlest bit of muting to the click.

The single pieces of foam are roughly comparable, imho, to the floss mod. When I rebuild I will do the whole numpad in 2 pieces of stacked foam, not just 1.