What have you done to your Tacoma today? 1st Gen Edition

Coil length makes no difference, it's the spring rate that does. Icons are only Digressive rebound anyway, still progressive compression. They're fine to compare.

 

Yes you can have them rebuilt and revalved for a better fit for your uses and equipment/weight. They're just like Kings in that respect and it makes a difference for sure.

 

Valving still makes a difference no matter what the coilover.

I though Icon was Digressive on compression as well. You sure they are progressive?

 

Thats what i thought as well

 

I know ADS is progressive compression and digressive rebound.

 

Tried to find where I read that and I can't, I should bookmark things more often. Either way you can still have them valved to your liking I wasn't saying my exact shim stack was what he needed.

 

I know that. I just had never heard that they were progressively valved. That has nothing to do with the shim stack but how the piston moves oil. You can't change that.

 

Hey look what I found, granted it is for 2.0s...

http://accutuneoffroad.com/articles/icon-vehicle-dynamics-2-0-digressive-piston-review/

 

In real world applications (off pavement, high speed, off pavement, low speed and on pavement, highway speeds and on pavement city driving) just what do progressive valving and digressive valving actually mean?

edit: I guess I am asking as a driver, how would have one over the other impact how I like what the truck is doing? Or isn't doing?

 

linear..hm. Just another word for progressive i guess. Cool though. Didn't know that.

First of all, im going to say things like speed, but when i say that, i mean shaft speed as in the speed the shaft of the shock.

So Progressive means as the speed increases, the valving gets stiffer.

Digressive means as the speed increases the valving gets softer.

Again, not truck speed, shaft speed.

So if the shock has progressive compression that means as the shaft moves into the shock it will get stiffer with high speed(bigger impact for instance)

Digressive rebound means that as the shaft extends at slow speed the valving is stiffer and as the speed increases the valving is softer. So a faster extension of the shock means softer valving which means the shock extends faster

 

yes i realize that.

But it does change how the coil behaves. It takes 600lbs to compress it 1 inch right? And another 600lbs to compress the next inch..ect ect.

If you preload 1'' already that means it is already at 600lbs right? So it would take 600lbs more meaning total force to get it to go the next inch is 1200lbs.

Vs having no preload which would just take 600lbs to move it the 1 inch.

Or am i not thinking of that right?

That was my understanding on linear coils..which is why a longer spring with no preload is "smoother" because it would take less force to get it moving the first inch.

Please confirm or destroy @Cr250jumper

 

I'm half tempted to put a coil in a press and with a scale and see what the hell happens. Would sure clear some shit up

 

Correct, but if you have a longer spring the truck will compress that extra inch. If you preload the ring or you compress the spring to fit on the shock you still get the same ride height. Say your truck weighs 1200lbs on the front corner, its going to compress the spring 2 inches whether you compress it with preload or you use a longer spring, obviously very crude and not taking leverage into account but same principal. A 600# spring will compress 2" with 1200 lbs whether its 12" long or 20" long

Think of no shock at all, just resting your truck on the spring. The 12" spring and 20" spring (same spring rate of say 600lb)will compress the same amount from start height, but obviously you would end up being 8" higher on the 20" spring. So if you are trying to fix ride height problems then by all means change lengths and rates etc. But if you are happy with ride height and flex and just trying to tune movement then springs are the wrong adjustment

 

Put the rear Superbumps in last night, was going to wait until I got my new leaf springs but it was a super easy install.

 

Just soldered the micro switch for the panic button on my key fob to the lock button that broke. Don't want to use the unused spare key fob so keeping the main one going is nice.

 

Cool that makes sense. Thanks JD.

 

Called the body shop, said they finished all the body work yesterday and today they got it painted. I should be able to pick it up late tomorrow or Thursday!

 

I dropped my pink injectors off at ADS tuning to have them cleaned and have their flow measured as well as resistance measured. Hoping they're all good, I haven't touched them since I bought them.

 

I had to think on what you were saying here for a minute.

But No i don't think that it changes the rate. It DOES mean it would take 1800 lbs for the next inch. That why you can get lift form a preloaded coil. You're increasing the force it takes to compress the coil thus lifing the truck.

Remember its 1800lbs of FORCE not weight. When your truck hits a big bump, thats a lot of weight coming down generating a lot of force.

The rate stays constant at 600lb an in. But for every inch you compress the more force is needed to compress it.

The last part of your statement is just not clear.