ORIGINAL: zaintlouis
I don't have problem with the alignment you're talking about.
In your third picture you can clearly see you have an alignment issue. The alignment I am talking about is keeping the top spring centered over the bottom spring. In this picture it is easy to see the white spring is not centered over the black spring. If you have any slop between the spring and the shock body it is going to allow the spring to kick out at the weakest point. This point is the area where your two springs meet. You stated you were using some form of a guide to keep the two springs together. I will bet after a short time running your springs this way you will see wear marks on the shock bodies from this guide. This will be caused by the alignment issue.
Look it woks well to me ok. i wouldn't post this in the first place. Well maybe your freind didn't get the right set up correctly. it cannot be done by just one test only. just simply if you don't like it don't do it.
I have no doubt what you are doing wont work. It will work but it isnt the most cost effective way nor is it the most mechanically efficent way to achieve your goal. My friend that I was referring to was the one running the Progressive springs that I pictured above. They are exactly what you are trying to achieve only engineered in a different manor. By increasing the diameter or decreasing the diameter of the coil, in the spring, it will allow for more or less spring tension under a given load. The nice thing about this spring is it is one complete piece. It doesnt have a weak point as your design where the two springs meet.
Why stop people from trying what could be better for them than your expensive 23$ spring.
I am in no means trying to stop you from reaching your goal. I am simply trying to inform you of the design issues that I see and the possible problems they may cause as well as give you a chance to try out an item that achieves your desired goal.
are u a store owner or something?
I am not a shop owner. I am a hobby machinist. I have made several things for my cars as well. Most of the time I have found that someone else has a product that is availible for a cheaper price and preforms as well as the items which I have made. This is why I referred you to the springs in the link above.
What i want to hear from people is application of the right length of auxillary spring. sorry about your criticism, am not gonna buy it. or whoever else will speak for you, i'm sticking to this idea firmly.
You dont have to buy anything I said, that is your choice. Between you and I your design/idea is sound your means of implimentation are not. I have pointed out a couple areas that I feel will cause you or anyone else wanting to do this issues. If you want to do this by all means keep after it. I honestly believe you will find that you need to go to a one piece spring when everything is said and done. What I would recommend is contacting a local machinist and see if they will make you some custom springs. You already have your design pictured above. All you have to do is measure the diameter of the wire used in your springs, then measure the amount of coils per inch for each spring, and lastly the overall length of each spring. Once you have all these measurements you can have a custom spring made that is one piece just like you current have on your buggy but it will no longer have the guide inbetween the two springs. This should reduce the alignment issues as well as increase the total suspension travel as compared to your current design.
One of the major design flaws with your idea is the use of two springs.
give me a break
I have done exactly what you are trying to do when in desprate times to get equipment up and running but the overall results where as I listed above. I have tried it and found that no matter how hard you work at it two springs stacked on top of each other simply dont preform as well as a single spring that is design for your application. I wish you the best with your project and hope you keep us informed as to how it works for you.
Good luck.