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geekhack Community => Keyboards => Topic started by: Giorgio on Sat, 06 August 2016, 12:52:28

Title: topre o-rings to silence the upstroke
Post by: Giorgio on Sat, 06 August 2016, 12:52:28
I know that there is the landing pad mod (to reduce the thickness it must be ironed though).
I wonder instead what o-rings you use. Someone says that the o-rings mod isn't very good, because they can roll and move thus preventing the key from going upwards.
It's quite common consensus that they must be quite thin, in order to reduce key-chatter.

Quote

The sliders on the NovaTouch are 7mm in diameter.

The inside clearance of the underside of the NovaTouch at the smallest clearance is 13mm.

I was using o-rings as silencers that were 1/16" thick. That was much too thick, so I would reccomend using something here that's 0.4mm-0.9mm thick. I had major ghosting issues.

Conclusion for best results with silencers:

7mm inside diameter

12.5mm outside diameter (maximum)

0.4mm - 0.9mm thickness

https://www.reddit.com/r/MechanicalKeyboards/comments/3r063x/keyboard_science_some_novatouch_measurements/
https://www.reddit.com/r/MechanicalKeyboards/wiki/modifications_topre#wiki_switch_silencing

I wonder if these washers o-rings can be considered adequate, or if it's better to get the dental bands
http://www.ebay.com/sch/i.html?_nkw=orthodontic+bands+3%2F16 (http://www.ebay.com/sch/i.html?_nkw=orthodontic+bands+3%2F16)

12.3mm O/D X 8.2mm I/D X 0.8mmThk
http://www.ebay.co.uk/itm/M8-Nylon-Washers-Choose-from-10-different-sizes-20-per-pack-/131872774548?var=&hash=item1eb43ad994:m:m4QFY4tuzOsn3ZJTBCTAcTg (http://www.ebay.co.uk/itm/M8-Nylon-Washers-Choose-from-10-different-sizes-20-per-pack-/131872774548?var=&hash=item1eb43ad994:m:m4QFY4tuzOsn3ZJTBCTAcTg)

12.1mm O/D  x 7.4mm I/D x 0.7mm Thk
http://www.ebay.co.uk/itm/M7-Nylon-Washers-7mm-8mm-I-D-Choose-2-sizes-LARGE-QUANTITIES-/142066144206?var=&hash=item66b75cf805 (http://www.ebay.co.uk/itm/M7-Nylon-Washers-7mm-8mm-I-D-Choose-2-sizes-LARGE-QUANTITIES-/142066144206?var=&hash=item66b75cf805)

Red 12.8 X 7.3 X 0.8
http://www.ebay.co.uk/itm/M7-Red-Fibre-Washers-Choose-3-sizes-various-quantities-available-/142058068568?var=&hash=item66b6ef858e (http://www.ebay.co.uk/itm/M7-Red-Fibre-Washers-Choose-3-sizes-various-quantities-available-/142058068568?var=&hash=item66b6ef858e)

I know that there are these o-rings, but they are quite expensive.
http://www.ebay.co.uk/itm/252485995488
Title: Re: topre o-rings to silence the upstroke
Post by: Tactile on Sat, 06 August 2016, 15:03:11
landing pads and o-rings are for MX. For Topre:

https://geekhack.org/index.php?topic=73940.0

EDIT: I just now saw the last link in your post. Those are not o-rings, and they are the right stuff. Regular O-rings are too thick.
Title: Re: topre o-rings to silence the upstroke
Post by: Giorgio on Sat, 06 August 2016, 15:13:14
Quote from: Tactile on Sat, 06 August 2016, 15:03:11
landing pads and o-rings are for MX. For Topre:

https://geekhack.org/index.php?topic=73940.0

EDIT: I just now saw the last link in your post. Those are not o-rings, and they are the right stuff. Regular O-rings are too thick.

these nylon washers shouldn't be bad...
plus the size seems right
12.1mm O/D  x 7.4mm I/D x 0.7mm Thk
(http://i.ebayimg.com/images/g/NrAAAOSwpzdWqe4V/s-l1600.jpg)
Title: Re: topre o-rings to silence the upstroke
Post by: Tactile on Sat, 06 August 2016, 15:22:28
Quote from: Giorgio on Sat, 06 August 2016, 15:13:14

these nylon washers shouldn't be bad...
plus the size seems right
12.1mm O/D  x 7.4mm I/D x 0.7mm Thk
Show Image
(http://i.ebayimg.com/images/g/NrAAAOSwpzdWqe4V/s-l1600.jpg)


They might fit but I don't know how effective at silencing they'll be. The trick is to have something which is very thin (so you don't goof up the stroke and the feel) and which will also do the silencing. Finding a material like that isn't easy and apparently it's expensive stuff.
Title: Re: topre o-rings to silence the upstroke
Post by: Giorgio on Sat, 06 August 2016, 15:51:32
it seems that the diameter of the stem for topre was wrong, and that the correct one is 8.4mm for novatouch, and 8.2mm for some other variants of topre
Title: Re: topre o-rings to silence the upstroke
Post by: jerue on Sat, 06 August 2016, 16:08:33
anything but the silenced sliders from Topre directly is ****
Title: Re: topre o-rings to silence the upstroke
Post by: Giorgio on Sat, 06 August 2016, 17:00:36
Quote from: jerue on Sat, 06 August 2016, 16:08:33
anything but the silenced sliders from Topre directly is ****

and where can I get those????
Title: Re: topre o-rings to silence the upstroke
Post by: sony on Sat, 06 August 2016, 21:28:44
Quote from: Giorgio on Sat, 06 August 2016, 17:00:36
Quote from: jerue on Sat, 06 August 2016, 16:08:33
anything but the silenced sliders from Topre directly is ****

and where can I get those????
Buy a silenced board like the hhkb type s. Realforce usually have s at the end of the model for silenced sliders. The sliders are purple but are not mx compatible like the Novatouch.
Title: Re: topre o-rings to silence the upstroke
Post by: Giorgio on Sun, 07 August 2016, 16:47:46
Is there anyone who can kindly confirm what is the diameter of the stem, and what is the maximum external diameter of an oring?

It should be 8.4mm internal and 12.5mm external....
Title: Re: topre o-rings to silence the upstroke
Post by: rowdy on Sun, 14 August 2016, 03:03:41
Quote from: Giorgio on Sun, 07 August 2016, 16:47:46
Is there anyone who can kindly confirm what is the diameter of the stem, and what is the maximum external diameter of an oring?

It should be 8.4mm internal and 12.5mm external....

https://geekhack.org/index.php?topic=73940.0