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Old 07-31-2014, 12:06 AM   #1
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Default SuperMiata Tecna coilovers

Now accepting pre-paid orders for the lat October 2014 shipment

The Tecna coilover is the result of almost two years of development. Our goal with the Tecna was to provide the best possible ride quality while still lowered. We think of these as daily driver shocks, not race shocks. If you are focused on the best possible handling for canyon, autocross or track, you should be looking at the Xidas elsewhere on our site. Functionally, you can expect them to feel like what Mazda might have done for a sportier OEM option. In fact, the Tecna are very similar to the Mazdaspeed turbo OEM Bilstein and spring package in spring and damping rates, but ride much nicer.

Visit our website for more info on the Tecna


Last edited by emilio700; 08-01-2014 at 03:02 PM.
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Old 07-31-2014, 12:35 AM   #2
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ah just time to put my car in the garage for the winter

at least I have all winter to install them because I'm a terrible, terrible mechanic.
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Old 07-31-2014, 08:35 AM   #3
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Payment processed now, or when they ship?
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Old 07-31-2014, 12:11 PM   #4
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Payment processed now, or when they ship?
"Pre-paid orders".
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Old 07-31-2014, 12:37 PM   #5
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In fact, the Tecna are very similar to the Mazdaspeed turbo OEM Bilstein and spring package in spring and damping rates, but ride much nicer.
Interesting. I have MSM Bilsteins and Tein S.Tech springs right now and I hate the ride quality but I'm good with the amount of roll and pitch.
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Old 07-31-2014, 02:09 PM   #6
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Interesting. I have MSM Bilsteins and Tein S.Tech springs right now and I hate the ride quality but I'm good with the amount of roll and pitch.
Two key differences between the Tecna and MSM Bilsteins. The low speed compression on the Tecna has a much shallower ramp and also lower hysteresis values. The latter I'm particularly proud of as the Bilsteins are generally pretty low in hysteresis for an inexpensive OTS shock. Anyway, this translates into much lower impact harshness than the MSM Bilsteins.

During the spring validation part of R&D, we needed to test the heaviest possible Miata. So we had a stock MSM with hardtop and a few engine bolt ons, 2900# with passengers. That car with Tecnas was positively plush compared to the OEM Bilsteins and S-Techs it rolled into the shop with. On the other end, we tested with me driving the 95R. That combo is 2350# with driver and 700/400 Xidas. The Tecna (336/224) ride significantly better than Xidas. That is more due to the low spring rates than damper quality though. Pretty sure if we ran the same 350/250 rates on Xidas they would be Cushmaster3000 also.

Trying to accommodate a 600# variance in GVWR with a single spring package proved impossible even using high end Swift springs. So we ended up with an LP (Low Preload) and HP (High Preload) spring option. See the website for details.
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Old 08-01-2014, 09:50 PM   #7
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Default Tecna setup options

Choosing spring kit, LP or HP

Most users will need the HP (high preload) setup which uses a single spring, no helpers, optimized for cars at 2450 lbs and above with driver. Ride height adjustment range will vary with total vehicle weight (with driver). Typical pinch weld height adjustment range for HP kit:

2450 lbs 4.9" ~ 5.4"
2650 lbs 4.7" ~ 5.0"
2850 lbs 4.2" ~ 4.7"

HP springs on a sub 2450lb car give crazy amounts of bump travel but it's not really lowered. Preferred rally setup or for someone that wants near OEM ride height

LP springs will give similar adjustment ranges for cars between 2100 -2450 lbs (with driver). Running LP springs on a car too heavy for them runs the risk of coil binding on big bumps. Besides riding poorly, the springs may not last long if they're being coil bound constantly.

The choice between LP and HP springs is not dictated by your desired ride height. Spring choice is dictated by total weight with driver and nothing else. Tecnas run 4.2-5.4" regardless. You must know what you car weighs to select springs with adequate stroke.

FTL - Front Travel Limiters

We had to make the decision to either allow enough bump travel to blast through the fender liners (best handling) or limit bump travel to protect the liners and thus limit max G handling. The Tecna front dampers have a whopping 140mm stroke, 5 more than OEM. This gives us the freedom to artificially limit stroke a bit with included FTL's (front travel limiters) for those running 205/50 on 8" or smaller tire/wheel combo and still keep fender liners. So we chose a damper length that allowed the same extreme bump travel as Xidas but are front fender liner happy as delivered. Remove the FTL's and liners at the same time if you decide to go for max travel. They just slide over the shaft and the springs have no preload in the box. So it is a quick bench task before installation that requires no special tools.

If you run wheels/tires wider or lower offset than 205/50 on 15x8 +36, you are probably already carving holes in your fender liners or have removed them entirely. With any wheel/tire combo, you can gain additional front bump travel by removing the FTL's and your front fender liners.

Despite me repeatedly reminding folks that the Tecna are not race shocks, they actually handle quiet nicely at track speeds. That performance on track is further inmproved by removing FTL's and liners. For most street and autocross only Miatas on 205's, I'd suggest keeping things simple and leaving the FTL's in.
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Old 08-01-2014, 11:55 PM   #8
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Emilio,

As you know, eBay setups are super popular. What could one expect from the change of a typical eBay setup to Tecnas?

Say for example my current setup, MSM Bilstein shocks sleeved with 450f/300r 7" springs which I happen to think rides pretty good. Or at least not much worse that the stock setup ever did.

I just felt like this is a question that many people may or may not think of, but almost everyone would definitely be interested to know the answer to.

Thanks.
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Old 08-02-2014, 12:21 AM   #9
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As you know, eBay setups are super popular. What could one expect from the change of a typical eBay setup to Tecnas?.
One is a perfectly matched system. The other is not.

If the Bilstein and ebay stuff worked so well, I would not have ever bothered designing the Tecna. Think about it. FWIW, I ran ebay springs and Sport Package Bilsteins for almost a year back in '03 on my turbo'd 99. Several TTODs but they still sucked

Last edited by emilio700; 08-03-2014 at 01:39 PM.
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Old 08-02-2014, 10:25 PM   #10
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Ordered mine to replace my haggard-*** 1st gen FM/AGX setup. I expect the Tecnas to ride like butter, give me clearer skin and improve my social standing.
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Old 08-04-2014, 01:16 PM   #11
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The LP springs can coil bind before bump stop engagement? This seems like kind of an engineering error.
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Old 08-04-2014, 02:14 PM   #12
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The LP springs can coil bind before bump stop engagement? This seems like kind of an engineering error.
That's funny but you probably don't know why yet.

If you can manage to develop a single spring package that will support 2200# Miata (laden) at 4.25" pinch weld and also a 2900# Miata (laden) at 5" pinch weld, I would be very interested

The required preload for each application is measured in in/lbs per corner. Nearly zero in the case of the former, about 240 in/lbs (per corner) for the latter example. Gotta have two spring systems to accommodate the huge preload range. The LP spring package which functions beautifully when lightly preloaded on my 2310# 95R, requires so much preload when trying to prop up Chris's MSM that one runs out of spring stroke. Conversely, the HP spring package on my 95R is restricted to about a 5.7" min pinch weld height.

The HP springs will work on any weight of car with no risk of coil bind when adjusted per the installation guidelines included with each kit. The slightly shorter and effectively progressive rate LP kit allows lower ride heights with lighter cars but will coil bind if too much preload is used on a car that is beyond the specified weight range.

So no "engineering error". On the contrary, the spring kits are very carefully engineered to be optimal for the specified weight ranges.
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Old 08-04-2014, 02:19 PM   #13
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Don't question Leafy. He is a master engineer. Do you even engineer Emilio?

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Old 08-04-2014, 02:21 PM   #14
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So you mean to say that someone putting the LP setup on a heavy car is even capable of threading the shock collars that far up the shock body to get to a higher ride height and reduce the perch distance at full compression to be less than the springs block height? Thats a **** load of threads.
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Old 08-04-2014, 02:37 PM   #15
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So if I'm understanding this correctly, the HP kit has either longer springs or stiffer tenders? Can you give us the specs on all the springs at this point?
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Old 08-04-2014, 04:06 PM   #16
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So you mean to say that someone putting the LP setup on a heavy car is even capable of threading the shock collars that far up the shock body to get to a higher ride height and reduce the perch distance at full compression to be less than the springs block height? Thats a **** load of threads.
Exactly. Of course we had to figure out the thread lengths for all the combinations. Instructions will specify min max spring length, measured from lower perch to upper mount. Simple.

What complicates the task is having such a small area to work with. Tecna use 2.5" springs whose collars don't quite fit inside of the FUCA. Xidas will rub a little there but because racecar, that's OK. For Tecnas, they needed to clear 100% That meant fitting all of that preload + stroke into a a relatively short length. Add to that the relatively soft springs and you have a recipe for much hair pulling, much calculating and a very large pile of Swift springs on the work bench.

The rear is pretty much the same deal, half shaft to upper mount is our defined workspace and even softer springs. More hair pulling, larger pile of swift springs.

The final pile of springs we used during development has helpers of 2,3 and 4", tenders, mains of 5 through 10" from suppliers on four continents. We're very happy with what we ended up with and we think the folks that run Tecnas will be too.

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So if I'm understanding this correctly, the HP kit has either longer springs or stiffer tenders? Can you give us the specs on all the springs at this point?
That info is on the item page on our website. We won't be publishing detailed specifics on the springs themselves because, frankly, it shouldn't matter. No other damper anywhere near this price range has the combination of overall length and stroke so comparisons between our spring kits and others would be moot.

Last edited by emilio700; 08-04-2014 at 04:51 PM.
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Old 08-04-2014, 04:17 PM   #17
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That info is on the item page on our website. We won't be publishing detailed specifics on the springs themselves because, frankly, it shouldn't matter. No other damper anywhere near this price range has the combination of overall length and stroke so comparisons between our spring kits and others would be moot.
I can appreciate that. But, even though you've done a ton of work to find the "right" springs, you know that there will be more than a few people that will want to swap them out for something else, at least to experiment. Knowing what's on there to start with will make it easier.

Honestly, I don't understand why you wouldn't just share the info. What am I not understanding?
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Old 08-04-2014, 04:29 PM   #18
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I dont think he wants to enable a Vmaxx 2.0 sold through TireRack using 949's R&D and specifications, regardless of damper quality.
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Old 08-04-2014, 04:34 PM   #19
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Bingo. Emilio is rightly protecting his IP. These shocks aren't for people who want to **** around with different spring rates. Get XIDAs or Bilsteins or Konis if you want to play race engineer. Get Tecnas if you want the best ride possible at a slightly lower ride height that looks good and is the best compromise for a street driven Miata that will still allow you to have fun at the occasional auto-x or track day so long as your goal isn't FTD.
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Old 08-04-2014, 04:39 PM   #20
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I'm waiting for someone to test these back to back with fm/tokico combo and tell me they're even more comfortable. Then I'm making it rain on Emilio with one dollar billz y0
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