类型: IC
作者: korrelate
发布时间: 2014-01-27
23:44:19
更新时间: 2014-03-26 13:02:19
原链接:
https://geekhack.org/index.php?topic=53998.0
Update: RL has finally quieted down enough that I can spend
some time on this.
I’m going to start the following
today and tomorrow (20140326 to short list the manufacturers
and as answers to the questions above become available I
will share them with the manufacturer):
- Identify a list of possible manufacturers (to be short listed-later on).
-
Figure out how to write a specification for a spring.
Information that would greatly help this effort:
OutstandingQuestions:
CONCERNING THE DIMENSIONS OF THE SPRING:
When I measure the dimensions of a stock cherry clear
spring I get the following dimensions:
a. ID = 4.5mm
(same for red and black.. the only other stock springs I
have on hand)
b. Gauge = .25mm (same for red and
black)
c. Uncompressed Length = 13mm.
These
measurements were all eyeballed. Anybody have the means to
take more accurate measures and confirm/update these
results?
CONCERNING THE DIMENSIONS OF THE SWITCH:
I am very curious to know what are the dimensions of
the cavity, inside the switch, where the spring sits when
the switch top and bottom are assembled. I figure it has to
be, at most, just shy of 13mm because the stock clears (the
shortest, uncompressed of the bunch that I have: reds,
blacks, clears) are somewhat compressed when the switch top
and bottom are assembled.
Answered Questions:
- [Solved by mkawa]: I want to nail down an important part of the definition. When we say 62g are we saying 62g to 2mm (activation) or 62g to bottom?
62g refers to the “spring rate.” In this case it’d be
62g/mm
Also,
I finally received a set of 62g springs. I
had been using 67g in my clears. Wow! What a difference that
5g makes. 67g area practically unusable (IMHO) compared to
the 62gs. That said, I’m still pressing forward with this.
mkawa has whetted my appetite for exotic materials and I am
going to see if I can’t find someone who will make these
(high tolerance on ID) out of medical grade spring steel
(high tolerances on gauge of the wire, custom alloy).
Seriously though: mkawa, your feedback is basically my
“shopping list.”
All,
I haven’t been wowed by any
of the off-market springs that I’ve found. They are not
terrible, not great. Kind of MEH, I think.
This would
be my very first group buy. I’ve bought and traded with a
number of you guys and check my heatware: I’m not a prolific
GHer but that’s only because I’ve got a lot of RL to deal
with.
That said… this is a group buy for MX 62g springs
only (definitely a popular spring).
And here’s what I
have in mind:
- I want really good springs. Tight tolerances on the OD and ID, number of turns, etc.
- I read up a bit on how the various components of a spring (OD, ID, /# active turns, wire diameter etc) determine it’s force curve, etc. BUT I would need a guru to get in on this. Please help me recruit one.
- I want a great quality wire. I don’t know which kind of wire (the number of choices are baffling) is “best” in this regard, but I’m hoping that a spring guru can help out here.
- I want to sell kits of 150 springs (= two 75% kbds or 1 full kbd + plenty of spares).
- I’m not trying to make any kind of profit of this. I just want the d/*/*n springs made and made well. No cost cutting BS to try and keep margins up.
-
Don’t get me wrong here: I have lots of love and tons of
admiration for Korean and Japanese products and yet I
would like to put the US somewhere on the map here. AND I
want them to be exceptional. I mean no joke exceptional: I
believe there’s plenty of talent everywhere: I just think
the US is obviously under-represented here and I would
like to remedy this.
The good part: these are springs. I’m pretty sure that 150 of the best springs that we could get can be had a very reasonable price.
You in?
And I’m very motivated w.r.t. the MOQ on wherever these are sourced from and will very aggressively pursue the contract and the GB. If we get close enough I will totally float the rest.
Also… I’ve never run a GB before so if someone would volunteer, via PM a phone number so that we can talk and hash out the finer points of a GB that would be great.
One thing I’m going to have to insist upon because I want this done and done as quickly as the quality will allow. You don’t pay until you’re invoiced. You don’t want them, don’t pay the invoice.
I hate to sound so grouchy about this, but I’m not trying to be: I just seriously, and as humbly as I can say it, don’t have the time to provide this GB with this amount of stewardship.
Thoughts, comments, observations?
Anyone know a spring steel/metallurgy guru?
Cheers,
K