Coil Springs (specs v build)

[Tom109]

I've been following this thread because of planned mods. Despite the talk of NAS models having different springs I have the double green circle 19546's up front on my 8/23 build. I figure if these can handle what @Logsplitter is doing I'll be fine. Do any NAS owners have the reds? Build specs are in my signature.
View attachment 7841039

I do have the red 21751 in the back.
View attachment 7841085

I have the same spring up front, and the red triangles in back.

 

[Bruce]

I have the same spring up front, and the red triangles in back.

Nice. Looks like you have the roof rack, but no steps or winch? Are you planning on adding either of those at some point and do you anticipate needing a spring change up front?

 

[Tom109]

Buzz sliders will be installed in about a month. I’ll take measurements from the bottom of each wheel rim to the top of the fender opening. Then see if they settle, and if any change with the sliders.

 

[MrMike]

Does anyone know what the Feature Codes are?
DaBull

It looks like they are in a decending alphabetical order corresponding with the increased weight.

 

[Krabby]

Just checked. I have a stock TM with tow package - no other options that would impact the weight.

Green dots up front and red triangles in the rear.

 

[[ Adam ]]

Just checked. I have a stock TM with tow package - no other options than would impact the weight.

Green dots up front and red triangles in the rear.

Same for me

 

[Tom109]

This may help @Bruce
View attachment 7841093

Has anyone ever posted actual spring rates for the springs in this chart?

 

[holdmybeer]

Has anyone ever posted actual spring rates for the springs in this chart?

“Spring rate” is column two of that chart. No? Linear in front. Progressive in rear. N/mm

 

[Tom109]

“Spring rate” is column two of that chart. No? Linear in front. Progressive in rear. N/mm

Hmm, yes. Reading is fundamental.

 

[holdmybeer]

2024 Trialmaster, Canada, petrol, winch.
Red circles in front, red triangles in back.

 

[shiv.nandak]

Just checked. I have a stock TM with tow package - no other options that would impact the weight.

Green dots up front and red triangles in the rear.

Weirdly I have a stock FM with tow package. Again, nothing to impact weight but I have Green dots and Green triangle.

You have K02s and I had Bridgestones - I wonder if that may be the reason for heavier springs?

 

[Keato]

Adding an unusual combo - Sept 2023 build TM with steps, bull bar, brush bars, winch, rough pack. Front springs have no colour dots but part number 19548. Rears are blue triangle 21752.

 

[Tinerfeño]

Actually, what surprised me most was the overall diameter of the rears and the diameter of the wire used - they look like they would belong on a Unimog and are certainly far larger than the ones on my old Defender.

Thicker wire makes spring harder but larger diameter softer as length of wire increases. So spring rate may not be that much greater.
My experience on standard diesel (no winch) springs is very positive, they work fine on and off road. Sorry, no codes.

 

[Tinerfeño]

WHICH TIRES/WHEELS?(adds some unsprung weight to the rig)

Please note that weight of axles, wheels and tyres (and also 50% of the suspension arms) are NOT carried by springs.

 

[Ron50]

Not sure if this thread is still alive but I found it after searching for info about the clearance under the front bump stops, which a wheel aligner who had never worked on a Grenadier thought was insufficient at about 15mm.

Also, my rear springs have the right number for green triangles but have green circles instead.

Details:

Front - Green circles
Rear - Green circles
Market - Australia
Type - Grenadier five seat wagon
Edition - Base but with diff locks
Seats - Five, heated leather fronts
Engine - Petrol
Winch - No
Roobar - Yes, with side bars and sliders all added by dealer
Aux Batt - No
Wheels - 17" with BFG
Towbar - No