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Nissan radius arm FLEX design

Tech Talk for Nissan owners.

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Posts: 413
Joined: Sun Apr 27, 2008 8:41 am
Location: South Is, NZ

Post by twodiffs »

Anyone know of Dobinson C45 309T...1madengineer?

Supposedly they are same spring rate etc as C70 335V
1991 GQ TD42 Safari, 5spd, 4" Lift, 35" shovels, Locked & Loaded.
Posts: 2621
Joined: Mon Nov 29, 2004 7:46 pm
Location: Springwood, Between Brisbane and GC

Post by Suspension Stuff »

twodiffs wrote:Anyone know of Dobinson C45 309T...1madengineer?

Supposedly they are same spring rate etc as C70 335V
Why do you need to know? are you having a problem? Or are you wanting a heavier or lighter coil then these for you next project?

Shane
We sell SUSPENSION - PRICES on
https://www.suspensionstuff.com.au" onclick="window.open(this.href);return false;
Free Freight 1300 048 991
FLEXY COILS - Superior Engineering - TIGERZ11 - Tough Dog - PROCOMP - Polyair - ETC
Posts: 413
Joined: Sun Apr 27, 2008 8:41 am
Location: South Is, NZ

Post by twodiffs »

Suspension Stuff wrote:
twodiffs wrote:Anyone know of Dobinson C45 309T...1madengineer?

Supposedly they are same spring rate etc as C70 335V
Why do you need to know? are you having a problem? Or are you wanting a heavier or lighter coil then these for you next project?

Shane
G'day Shane

Because I want to know, No and Yes.

I'm 99% certain of my current springs but they are showing signs of 'sagging' slightly (rear only). It's not just for 4wd ability but I'm carrying a shyte load of gear for work purposes and towing trailers etc.

I've got 3" LWB 19mm coils (C45-129, 282lb), so i'm sourcing
C70-335 (295 lb/20mm dia), I've just found out that I can also get C45-309T (same as C45-129 'apparently') in rate and height.

Only got some feedback about C70-335 today so want to do some more homework on them before ordering ;) .

Cheers
1991 GQ TD42 Safari, 5spd, 4" Lift, 35" shovels, Locked & Loaded.
Posts: 2621
Joined: Mon Nov 29, 2004 7:46 pm
Location: Springwood, Between Brisbane and GC

Post by Suspension Stuff »

twodiffs wrote:
Suspension Stuff wrote:
twodiffs wrote:Anyone know of Dobinson C45 309T...1madengineer?

Supposedly they are same spring rate etc as C70 335V
Why do you need to know? are you having a problem? Or are you wanting a heavier or lighter coil then these for you next project?

Shane
G'day Shane

Because I want to know, No and Yes.

I'm 99% certain of my current springs but they are showing signs of 'sagging' slightly (rear only). It's not just for 4wd ability but I'm carrying a shyte load of gear for work purposes and towing trailers etc.

I've got 3" LWB 19mm coils (C45-129, 282lb), so i'm sourcing
C70-335 (295 lb/20mm dia), I've just found out that I can also get C45-309T (same as C45-129 'apparently') in rate and height.

Only got some feedback about C70-335 today so want to do some more homework on them before ordering ;) .

Cheers
I have only ever used the C29-129 coils as a higher 2" lift coil so in my opinion, never going to work for a 3" lift.

The C45-309T must be 331lb because C45-129 are definitely softer.

C45-309T will sit approx 15mm higher then C45-129 and be able to carry probably an extra 400kg then C45-129 without sagging.

We have a heavier coil again then the C45-309T which is C45-325T for loads beyond of 500kg to beyond the legal capacity of your Nissan. Definitely need spring tower bracing with these coils.

If you want a flexy coil the C70-335V would be good for 500kg+ however I am about to design some heavier duty rear 3" lift flexy coils to suit the 300kg to beyond legal loads, if you are interested I can fast track this. The new coils would sit at approximately the same ride height however they would be 1mm thicker in wire diameter.

I am about to start designing some what I am going to call ULTRA FLEXY COILS. These coils will not replace the flexy coils but they will be more flexy. They will cost more and will give about 4 inches of extra flexy then a normal coil, maybe a little more. I will find some Guinea Pigs to do some testing. I probably won't have them on my web site for another 12 months so I can do some testing.

I will be also getting these ULTRA flexy coils made for the front of the 2" lift and 3" lift Patrol to suit the Superflex arms.


Shane
We sell SUSPENSION - PRICES on
https://www.suspensionstuff.com.au" onclick="window.open(this.href);return false;
Free Freight 1300 048 991
FLEXY COILS - Superior Engineering - TIGERZ11 - Tough Dog - PROCOMP - Polyair - ETC
Posts: 413
Joined: Sun Apr 27, 2008 8:41 am
Location: South Is, NZ

Post by twodiffs »

Thanks Shane...a lot of info there, you're a legend!

I'll check out some more info on the C45-309T (actually Superior mentioned on this thread that they used 340lb coils...might be these ones?).

I'll only need the above (possible overkill) or will probably go for C70-335
i'd say, plus I'm using the Procomps so it will be a good match up i reckon.
1991 GQ TD42 Safari, 5spd, 4" Lift, 35" shovels, Locked & Loaded.
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