laughingowl
Sep 19 2006, 09:01 AM
While I can find several posts in SR4 forums mentioning Dikote (clearly people still use it), I cant find anything in BBB that references it, nor any threads here on SR4 stats/mechanics.
Considering I just got a Dikoted Tanto trying to help my game master out.
Now in truth considering that my blades skill is Zero

I doubt I will be using it any time soon. (not far that matter would I use a gift save dire emergency).
Still was wondering what if any others had used for the mechanics for Dikote™ in SR4.
Peace
Serbitar
Sep 19 2006, 09:16 AM
For Weapons:
+0/-3
For Armour:
+1/+1
laughingowl
Sep 19 2006, 09:26 AM
Serbitar so a Dikote Tanto:
reach -
damage (str/2+1)P
AP: -4
no increase to actual 'damage' just increase in armor penetration?
Peace
Steak and Spirits
Sep 19 2006, 09:27 AM
+1/+1 for armor, huh?
Seems like Dikote got a pretty big downgrade in protective efficiency over 10 years. I think a +2/+2 would still come up short to the former awesomeness of reducing your BodySoak TN by 1.
Serbitar
Sep 19 2006, 10:13 AM
I personally do not like "super upgrades".
I was asked for my stats, so I gave them.
Rotbart van Dainig
Sep 19 2006, 10:26 AM
QUOTE (laughingowl) |
Still was wondering what if any others had used for the mechanics for Dikote™ in SR4. |
None at all.
Dikote was what the FirePower ammunition was... a fix for the problem of melee weapons doing not enough damage.
Ultrahard surface enhancements are nice, but they don't improve overall effectiveness of modern materials enough to justify any game effects.
Thanee
Sep 19 2006, 11:13 AM
I would probably do it like this:
Dikote™ on blades: DV - AP -1
Dikote™ on armor: no effect
Bye
Thanee
Smity
Sep 19 2006, 02:05 PM
But are this rules official or homemade ones?
And another question: how much it cost and what availability should have?
Rotbart van Dainig
Sep 19 2006, 02:09 PM
There are no official rules for Dikote ATM.
kzt
Sep 19 2006, 05:43 PM
QUOTE (Thanee) |
Dikote™ on armor: no effect |
If you put a super-hard coating on a fairly rigid and strong surface it should allow the armor to resist penetrators much more effectively. Essentially what face hardening did in the early 20th century. So high velocity small caliber penetrators shatter on impact. Basically you could end up where "standard bullets" will go through someone’s armor and AP rounds won't. Ignoring that small caliber APDS rounds don't work in the real world, I'd think a small caliber APDS round is even more likely to be affected by this than AP bullets.
"Since the later part of the 19th century, armor manufacturers clearly understood that it was possible to harden armor to a point that it could withstand just about any attack. However, as its hardness increased, its toughness decreased. Really hard armor would be so brittle that it would more than likely shatter when hit by a projectile."
"The answer was face-hardened armor. An American invented a process where the face of armor could be hardened without affecting the overall toughness of the armor behind it. When high-velocity AP projectiles struck face-hardened armor plates, they had a tendency to shatter."
http://www.lostbattalion.com/t-pz_panzerfact1.aspx
Thanee
Sep 19 2006, 05:45 PM
QUOTE (kzt @ Sep 19 2006, 07:43 PM) |
If you put a super-hard coating on a fairly rigid and strong surface it should allow the armor to resist penetrators much more effectively. |
The problem is... SR4 armor isn't rigid and strong.
QUOTE |
Thanks to monofilament ballistic fabrics, spiderweave threads, ceramic-titanium composite plates, and liquid armor packs to cover non-rigid areas, modern armor is lightweight, flexible, and concealable. |
Doesn't really sound like ultra-hardened surfaces are common in there.
Bye
Thanee
kzt
Sep 19 2006, 05:50 PM
QUOTE (Thanee) |
The problem is... SR4 armor isn't rigid and strong. |
There is that. You'd need it on a metalic armor, like steel or titanium I'd think. Might work on carbon fiber, but materials science isn't close to what I got my degree in.
Hmm, I'd bet that military grade armor (or whatever it was called in cannon companion) would server as an effective armor for this. Too bad it's typically in the hands of the opposition.
Rotbart van Dainig
Sep 19 2006, 05:51 PM
QUOTE (kzt) |
If you put a super-hard coating on a fairly rigid and strong surface it should allow the armor to resist penetrators much more effectively. |
Well, at least that's what was hoped for light armor.
Let's just say that coatings of that thickness don't really impress bullets.
Austere Emancipator
Sep 19 2006, 06:19 PM
Boron carbide is already harder than the tungsten carbide penetrators of small arms armor piercing bullets, but apparently M993 AP rounds still go through without shattering. Would have to wait on Cray74 or someone else to confirm that, but I figure a few extra fractions of Mohs in an extremely thin layer wouldn't make those penetrators much more likely to shatter.
Mistwalker
Sep 19 2006, 06:26 PM
Dikote could work on the plates that are optional on some armors.
Rotbart van Dainig
Sep 19 2006, 06:33 PM
QUOTE (Mistwalker) |
Dikote could work on the plates that are optional on some armors. |
Those plates are nearly as hard as Dikote itself... and Dikote only adds a very thin layer.
It would be hard to even measure the difference...
Austere Emancipator
Sep 19 2006, 06:51 PM
After searching for some absolute hardness figures for these materials, my conclusion is that they are all Really Fucking Hard on the AE-HFH-scale.
Shrike30
Sep 19 2006, 07:29 PM
The "Austere Emancipator - Hard Fucking Hardness" scale?
Austere Emancipator
Sep 19 2006, 07:36 PM
Almost. It's Austere Emancipator's How Fucking Hard (Is This Shit) scale. It is approximately equal to Lots on the Vickers hardness scale and I Don't Know, Plenty? on the Rockwell A-scale.
Aaron
Sep 19 2006, 07:59 PM
By 2070, wouldn't Dikote already be fairly ubiquitous in materials in which hardness is a factor? Kinda like teflon today.
DireRadiant
Sep 19 2006, 08:00 PM
QUOTE (Aaron) |
By 2070, wouldn't Dikote already be fairly ubiquitous in materials in which hardness is a factor? Kinda like teflon today. |
Diamond age?
Aaron
Sep 19 2006, 08:13 PM
QUOTE (DireRadiant) |
QUOTE (Aaron @ Sep 19 2006, 02:59 PM) | By 2070, wouldn't Dikote already be fairly ubiquitous in materials in which hardness is a factor? Kinda like teflon today. |
Diamond age?
|
Ow.
Narmio
Sep 19 2006, 11:45 PM
While I dislike Dikote and all it represents as much as the next GM, this idea of "surface hardening to counteract penetrators" is interesting.
What if Dikote on armour provided "AP resistance"? Basically, on weapons it increases your AP by two, on armour it *decreases* the AP of any incoming attacks by two.
Given the outrageous cost and the fact that it can only be added to "rigid" armours (always a fun argument, that one, players like Dikoting anything which has the word "plate" in the description), that seems balanced.
Whether it's realistic enough for the gun nuts around about the place is another question.
Shrike30
Sep 19 2006, 11:57 PM
If you ignore the actual description/physics of Dikote, it's not that bad of a thing, gameplaywise. An incredibly expensive treatment that makes weapons and armor somewhat more effective? Uh, okay.
kzt
Sep 20 2006, 12:22 AM
QUOTE (Narmio) |
Whether it's realistic enough for the gun nuts around about the place is another question. |
Those of us who really care don't play SR. It's really awful on guns.
Cynic project
Sep 20 2006, 02:54 AM
look i need Dikote for my Ally spirit....SO i can make it into a ares... gun and um...
Zen Shooter01
Sep 20 2006, 03:24 AM
It would have been nice if someone who'd seen a gun had walked past the equipment list while it was being written.
I started on a firearms rewrite, but I thought I'd wait until after Arsenal.
kzt
Sep 20 2006, 03:30 AM
QUOTE (Zen Shooter01) |
I started on a firearms rewrite, but I thought I'd wait until after Arsenal. |
Speaking of
Arsenal, I wonder if they are going, yet another time, confuse the word "velocity" with the phrase "cyclic rate"? Want to bet?
Rotbart van Dainig
Sep 20 2006, 10:04 AM
I surely hope they wont implement any rules for engines in Arsenal... it so depressing to see SR limp behind actual developments. (Hybrid cars? Ethanol? Combined? uh...)
Cray74
Sep 20 2006, 01:39 PM
QUOTE (Rotbart van Dainig) |
QUOTE (Mistwalker @ Sep 19 2006, 08:26 PM) | Dikote could work on the plates that are optional on some armors. |
Those plates are nearly as hard as Dikote itself... and Dikote only adds a very thin layer. It would be hard to even measure the difference...
|
Back in the days of yore, when I actually worked in a lab that did diamond deposition, the rule of thumb from my literature searches on diamond applications was, "Diamond makes anything better," superhard ceramics included.
The difference in ballistic resistance is measurable even with a thin film diamond coating, even on boron nitride or other superhard ceramics. Projectiles just tended to skitter off the surface a little more often with the diamond coat present. It's a matter of percentages, but it's just at the edge of equaling a +1 armor bonus on the SR3/SR4 armor scales. Thus, allowing Dikote to deliver a +1/+1 to armor is, IMO, defensible (pun intended.)
Giving a damage or AP bonus to a dikoted edged weapon is...well, it's more of an exaggeration. I wouldn't mind a 1-point AP bonus to dikoted edged weapons in my games, but if it chaps your ass, leave it out.
QUOTE |
There is that. You'd need it on a metalic armor, like steel or titanium I'd think. Might work on carbon fiber, but materials science isn't close to what I got my degree in. |
OTOH, it's just what I got my degree in.

Dikote should work on any material that is
a) fairly rigid (like steel or a ceramic)
b) can survive the heat of the deposition process
Therefore, any armor with rigid ballistic plates with a hard face of steel, ceramic, or maybe titanium [1] could include dikoting.
In my games, I always allowed "vest with plates," security armor, and military grade armor to receive dikoting. Helmets could receive it, but wouldn't provide a separate armor bonus - you'd only get one +1/+1 for a suit of dikoted armor and helmet.
[1] I wanted to exclude titanium as a dikote target as having too low a stiffness, but that was a brain fart. I still have some titanium target plates (uncoated, alas) from the lab. There was an experiment to deposit diamond on titanium for medical implant purposes - diamond was laudably hydrophobic, so slime and bacteria didn't cling.
Rotbart van Dainig
Sep 20 2006, 02:29 PM
QUOTE (Cray74) |
The difference in ballistic resistance is measurable even with a thin film diamond coating, even on boron nitride or other superhard ceramics. Projectiles just tended to skitter off the surface a little more often with the diamond coat present. |
Was the reason for this determined? Though BN has a lower hardness than diamond, it has a greater pressure resistance.
Granted, I was mainly remembering aramide demonstrators coated with silicon carbide... which failed as miserably as the ones without.
QUOTE (Cray74) |
OTOH, it's just what I got my degree in. |
Any recommondations on current literature?
Cray74
Sep 20 2006, 03:16 PM
QUOTE (Rotbart van Dainig) |
QUOTE (Cray74) | The difference in ballistic resistance is measurable even with a thin film diamond coating, even on boron nitride or other superhard ceramics. Projectiles just tended to skitter off the surface a little more often with the diamond coat present. |
Was the reason for this determined? Though BN has a lower hardness than diamond, it has a greater pressure resistance.
|
Part of the issue was the surface modification - a deposited diamond coating could be slicker than a typical sintered ceramic surface. Some of it, IIRC, was also chalked up to hardness, but the whole reason wasn't entirely understood at the time (c1995).
Coatings in general just seem to help ballistic resistance, wear applications, etc. A diamond coating does wonders for the wear life of tungsten carbide drill bits, for example - up to 10-fold life increases.
QUOTE |
Any recommondations on current literature? |
If you want to know about corrosion or textbooks for masters-level courses, yes. If you mean on diamond deposition, no, nothing cutting-edge current.
Rotbart van Dainig
Sep 20 2006, 03:42 PM
QUOTE (Cray74) |
Coatings in general just seem to help ballistic resistance, wear applications, etc. A diamond coating does wonders for the wear life of tungsten carbide drill bits, for example - up to 10-fold life increases. |
Unless you plan to drill steel, of course.
QUOTE (Cray74) |
If you want to know about corrosion or textbooks for masters-level courses, yes. If you mean on diamond deposition, no, nothing cutting-edge current. |
Thanks - the former sounds interesting, as, unfortunately, the textbook of my course concerning materials science partially is... uh, historic.
Cray74
Sep 20 2006, 07:29 PM
QUOTE (Rotbart van Dainig) |
Unless you plan to drill steel, of course.
|
Oh, right. Iron does love that carbon.
QUOTE |
QUOTE (Cray74) | If you want to know about corrosion or textbooks for masters-level courses, yes. If you mean on diamond deposition, no, nothing cutting-edge current. |
Thanks - the former sounds interesting, as, unfortunately, the textbook of my course concerning materials science partially is... uh, historic.
|
I'll look into it tonight, if I remember after getting this get-it-done-yesterday proposal off my desk. I know a couple of my undergrad text books (used mid-90s) were referenced extensively in the grad-level materials course I took last semester.
Offhand...
A handy generic reference book is "Metals Handbook, Desk Edition, 2nd edition," by ASM International. I've used that several times in gaming debates, like how toxic depleted uranium isn't (on par with other heavy metals, like lead), plus a few times at the office while actually doing materials engineering rather than pushing paper.
Also, "Principles and Prevention of Corrosion, 2nd edition," by Denny A. Jones. That's come in useful several times at the office.
Rotbart van Dainig
Sep 21 2006, 02:25 PM
Thanks a lot - those look like serious material.
Cray74
Sep 21 2006, 06:21 PM
QUOTE (Rotbart van Dainig) |
Thanks a lot - those look like serious material. |
Porter & Easterling's "Phase Transformations" is a key, basic book. It's turned up in both my masters and bachelor's courses at two different universities.
Ohring's "Material Science of Thin Films" also turned up in both places but, like the corrosion book earlier, it's a bit specialized.
Rotbart van Dainig
Sep 22 2006, 05:55 PM
Though those look indeed more specialized, they might come handy - thanks.
Ankle Biter
Sep 23 2006, 07:20 PM
I reckon dikoted materials are not mentioned mainly because the SOTA is now such that diamond is a less desireable material to coat blades with then what they come with naturally.
And, frankly, a thin layer of diamond on armor that is even slightly flexible will shatter as soon as anything hits it anyway.
Killgore
Oct 8 2006, 05:06 PM
So here's a question. Could you (in theory) dikote bullets (Just the tips, before propellants are added, obviously), and what would that do for you in game terms? Granted, you'd probably have to use special material to withstand the process, but would it be worthwhile?
And what would the interaction be between Dikote Bullets vs Dikote Armor?
Also, cost was mentioned earlier in this thread. Since so many other previously high costs have come way down (cyberarms, for example), it seems likely to me that Dikote could come down too, becoming a cost effective purchase?
Slithery D
Oct 8 2006, 05:14 PM
If you Dikote cheap, scratchy brown toilet paper, does it still burn your ass? Is it in fact too smooth to pick up any, ah, "material" at all? If it was stuck to the bottom of your shoe, would you slip? If not, what would happen if you stepped on a contact explosion land mine?
Garrowolf
Oct 10 2006, 04:31 AM
I use a form of the old Hardened Armor rules with a twist or two. You could use this to represent the Dikote armor.
Hardening
Some armors have a hardening rating representing hard plates. This has the following effects:
· If the DV is less then or equal to the Hardening then the attack just bounces off. There is no stun roll made.
· It reduces the AP of any attack up to the rating.
· It adds it’s rating to both the ballistic and impact ratings (reduced by how much it is counteracting the AP)
Hardening is noted after the Ballistic and Impact in parenthesis. Cyberlimbs can have a point or two of hardening if they have armor. Hardening is not available in civilian armors. Security armor can have up to a 4 with a security license. Military armor goes up to a 6. After that they use Hard Suits or vehicles instead.
Ex: Full Body Armor becomes 6/4(4)
An attack with a heavy pistol 5p -1ap looses the AP on the hardening and leaves 6/4(3) so add the ballistic plus left over hardening (9) to body test.
That heavy pistol with APDS would become 5p -5ap so the armor becomes 5/4(0) as the -5 removes the hardening and one point of armor.
But a light pistol doing 4p 0ap bounces right off the hardening. A knife doing 4p would also skip right off.
dabigz732
Oct 11 2006, 05:18 AM
QUOTE (Cray74) |
The difference in ballistic resistance is measurable even with a thin film diamond coating, even on boron nitride or other superhard ceramics. Projectiles just tended to skitter off the surface a little more often with the diamond coat present. It's a matter of percentages, but it's just at the edge of equaling a +1 armor bonus on the SR3/SR4 armor scales. Thus, allowing Dikote to deliver a +1/+1 to armor is, IMO, defensible (pun intended.)
Giving a damage or AP bonus to a dikoted edged weapon is...well, it's more of an exaggeration. I wouldn't mind a 1-point AP bonus to dikoted edged weapons in my games, but if it chaps your ass, leave it out. |
By the way, speaking as someone in Baghdad at the moment and with some friends who stupidly sit partially exposed in the rather inhospitable environment I have to say a change of even a tiny amount can save your life. We had a ESapi plate come by a while ago that had the tip of a 7.62 round JUST sticking through it. Painful? Yes, but pain is good, it reminds you that the bad guy didnt just shatter your sternum creating high velocity bone fragments.
Once I get some pictures of all the gear we wear I'll prolly post 'em and give you guys some idea just how much we wear. But for a teaser let me just say the Michelin Man has NOTHING on me.
Z
Austere Emancipator
Oct 11 2006, 09:30 AM
QUOTE (dabigz732) |
We had a ESapi plate come by a while ago that had the tip of a 7.62 round JUST sticking through it. |
Holy fuck! Any idea how that happened -- do they have WC core ammo out there or did it hit right on top of an earlier impact or something?
You can see the full setup with ESBIs
here (PDF file) -- apparently not quite the same you're wearing, but pretty bulky nevertheless.
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