LX 570 Custom Springs? (1 Viewer)

[grinchy]

Turns out that partial wraps need to be counted. So any theoretical values are estimated until the exact wraps are documented.

 

[grinchy]

I’m confused. Are you waiting on a mic measurement for the Terrain Tamer 2168’s, because I posted a photo of that up there
It’s 14.53. These are what I just put in and I’m just a little curious what their spring weight is compared to stock. I thought I had seen it posted somewhere here but now I don’t see it. All I see is the King in the chart.

I’d love a dual, triple or progressive rate spring in a 7” diameter with a relatively light spring rate. Nice and long like the slinky coils

Oh, I thought that was the fat side of the oem coil.
Looks like some new calculating is in order

 

[MTKID]

Oh, I thought that was the fat side of the oem coil.
Looks like some new calculating is in order

No, those shiny black ones (aside from the minor scuffs from placing them on the concrete) were the new ones vs the old dirty OEM ones.

Thanks for your efforts calculating. I would have assumed Terrain Tamer would have it posted somewhere, so I was surprised it wasn’t already in the chart @TeCKis300 has going.

And wouldn't the photos I posted allow a correct count of the coils, or is there something else I need to take into account?

 

[grinchy]

Oem rear driver
12.67mm, 175mm outer, 5.25 wraps
149.7mm inner diameter
92 lb/in

Terrain tamer (both same?)
14.53mm 175mm outer, 6.5 wraps
146mm inner diameter
123 lb/in

 

[MTKID]

Oem rear driver
12.67mm, 175mm outer, 5.25 wraps
149.7mm inner diameter
92 lb/in

Terrain tamer (both same?)
14.53mm 175mm outer, 6.5 wraps
146mm inner diameter
123 lb/in

I’m an idiot. I measured the diameter of the new coils on my rig and posted that photo rather than the old OEM like you were asking for. They’re just sitting in my shop, so I’ll measure them tomorrow to be sure what they are even though they look the same in the photos.

 

[grinchy]

And wouldn't the photos I posted allow a correct count of the coils, or is there something else I need to take into account?

no, pics are good, I’m just learning along

 

[grinchy]

I’m an idiot. I measured the diameter of the new coils on my rig and posted that photo rather than the old OEM like you were asking for. They’re just sitting in my shop, so I’ll measure them tomorrow to be sure what they are even though they look the same in the photos.

Space for all us idiots here

 

[grinchy]

View attachment 3091756View attachment 3091758

The OEM passenger coil was considerably taller than the new ones or the driver’s side. I stood on the oem driver’s side.

View attachment 3091757

Just about to go for a test drive

I think these pics fine for coil counting. 6.5 new and 5.25 old

Also fine for the wire diameters

 

[MTKID]

Space for all us idiots here

I’m just teaching eveyone else patience

 

[MTKID]

I think these pics fine for coil counting. 6.5 new and 5.25 old

…and I did take accurate measurement of the difference between driver and passenger OEM coils today and it’s exactly 2” taller on passenger. But I can post a photo for coil counting tomorrow.

 

[grinchy]

I’m an idiot. I measured the diameter of the new coils on my rig and posted that photo rather than the old OEM like you were asking for. They’re just sitting in my shop, so I’ll measure them tomorrow to be sure what they are even though they look the same in the photos.

Overall diameter is very likely the same. I’m using 175mm.

 

[grinchy]

…and I did take accurate measurement of the difference between driver and passenger OEM coils today and it’s exactly 2” taller on passenger. But I can post a photo for coil counting.

We’re the new springs from TT same height or different like oem?

 

[grinchy]

…and I did take accurate measurement of the difference between driver and passenger OEM coils today and it’s exactly 2” taller on passenger. But I can post a photo for coil counting.

Same coil count though? Or different?

 

[MTKID]

We’re the new springs from TY same height or different like oem?

New TT coils are both the same exact height as the driver’s side OEM.

And I’m pretty sure there are more coil wraps on the passenger OEM coil. Coil spacing looked the same so I think there is just another wrap to equal that 2” difference.

 

[1world1love]

What’s up fellas? Did you guys figure out the OEM spring rate? Or the TT?

 

[MTKID]

What’s up fellas? Did you guys figure out the OEM spring rate? Or the TT?

Seems to be a little discrepancy between the two answers so far. We have a 92 lb/in and a 105 lb/in for OEM. And one answer for TT coils spring weight of 123 lb/in so far, which I did not stand on before installing I didn’t realize we didn’t have that spring rate somewhere already.

 

[grinchy]

Seems to be a little discrepancy between the two answers so far. We have a 92 lb/in and a 105 lb/in for OEM. And one answer for TT coils spring weight of 123 lb/in so far, which I did not stand on before installing I didn’t realize we didn’t have that spring rate somewhere already.

I imagine oem is 100, that’s the in the range or error for our 105 empirical measurement And 92 napkin math.

 

[grinchy]

What’s up fellas? Did you guys figure out the OEM spring rate? Or the TT?

I was going to ask you to measure the TT wire diameter, but @MTKID already did

 

[grinchy]

Same coil count though? Or different?

Picture earlier in thread on page 1. The oem passenger has 6.25 coils
12.67mm, 149.7mm inner diameter
73 lb/in

Really?

 

[grinchy]

I can't say for sure, but the perches are very likely the same, like they were in the 100-series. Since we know the same part number airbag can fit between the two. And the same coil spacer can be used (like I have added to my LX570). Actually, I believe the coil spacer is compatible between the 80/100/200 series which suggests the diameter of the spring is the same.

Back in the 100-series world, there were individuals that used the normal LC spring in the AHC system. With the AHC height adjusted such that at the nominal ride height, the AHC system was at its designed for neutral pressure. That is the key to setting this up - to keep the AHC system within it's nominal load range such that sufficient damping can be applied. Dialing in the right pressure can be practically done with any spring, by adjusting ride height. But at some point, the combined spring rate still has to be reasonable.

AHC is an active system with height and accelerator sensors. So it can adapt to heavier rate springs. Also, we have a manual gain control, if you will, to increase damping rates to an extent to adapt.

Note that the people that tried the normal LC spring in the 100-series, were setup very heavy. Otherwise, that spring is just too much. Others have used an 80-series spring (lower spring rate with similar dimensions). The 80-series spring likely fits in the 200. Or even a 100-series spring in a 200 that has lots of armor. Just to give you a visual, checkout the 100-series AHC spring left vs the 80-series normal spring. Dramatically different in spring rate as you can imagine.
View attachment 1561192

5 years ago @TeCKis300 called it. The oem 80 rear spring a good economical upgrade for the 200 with ahc.
Roughly 130 lb/in, same as the TT upgrade springs.