Tanabe NF210 Spring Design

[Sveivo]

I received some Tanabe NF210 springs today for the BJFW (P5) platform and I have been pondering the design of the springs. See pic.

Notice that the rear spring (on the left) has a section of tightly wound coils. My thoughts are that once the spring is installed and the suspension is loaded, that section will compress and will just sit there like that, with the coils contacting each other. Right?

What are advantages of a design like that? Will this make things clunk? If you have springs that look similar, please chime in. Or if you have any information, go ahead and share.

 

[JoshP5]

You are correct about the closely wound coils--they compress under the car's weight and don't really participate in the suspension dynamics. They are there to ensure the springs fit tightly between their mounts when the suspension is fully extended, like when you put the car up on a lift or go weightless over a rise.

I wouldn't expect any clunk specifically because of this design feature. If you hear the coils contacting each other, you can get spring sleeves (rubber tubes that wrap around the spring wire) from Tein.

 

[Sveivo]

You are correct about the closely wound coils--they compress under the car's weight and don't really participate in the suspension dynamics. They are there to ensure the springs fit tightly between their mounts when the suspension is fully extended, like when you put the car up on a lift or go weightless over a rise.

I wouldn't expect any clunk specifically because of this design feature. If you hear the coils contacting each other, you can get spring sleeves (rubber tubes that wrap around the spring wire) from Tein.

Thanks for your insight. (alright) It really makes pretty good sense.

 

[red95_240sx]

Yea my springs r designed like that, no clunking or rubbing.

 

[Sveivo]

Yea my springs r designed like that, no clunking or rubbing.

Good to know! (headbang)