Recent content by drobbie
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Automotive Race car suspension Class
Thanks, Ranger Mike. You have confirmed a theory I have based on the studying I have done over the years. This gives me the direction I needed to make the car handle correctly. BTW, I have been working on Roll Center all winter and made the necessary changes to get it as optimum as possible...- drobbie
- Post #1,713
- Forum: Mechanical Engineering
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Automotive Race car suspension Class
Reading through the last series of exchanges, you have given a very simplistic look at the car setup (not that the remaining details don't also matter). But I have a quick question; it appears many of the recommendations you give are for roll centers, and spring rates are for cars that have...- drobbie
- Post #1,711
- Forum: Mechanical Engineering
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Automotive Race car suspension Class
Hi Ranger Mike, In thinking about all the variables when making a change to a suspension component, we have had discussions around the topic of for every action; there is an opposite reaction. My question is softening or stiffening opposite corners when making a spring change. In my case, I...- drobbie
- Post #1,637
- Forum: Mechanical Engineering
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Automotive Race car suspension Class
Spot on ! I read the rules to see what they do not say, not what they do say.- drobbie
- Post #1,617
- Forum: Mechanical Engineering
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Automotive Race car suspension Class
Ranger Mike, I was reading through your posts on rear steer and can say I am with you on it having a positive effect on cornering. We experimented with it late last season and found good results. What I am now curious about is when making the adjustments for rear steer is it better to make the...- drobbie
- Post #1,580
- Forum: Mechanical Engineering
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Automotive Race car suspension Class
You are so right Ranger Mike, the software is great. I'd like to expand a little on dontlift19's question but more so when designing a front end that might have unequal lowers. In reading the earlier posts you go over the design of a front end and the placement of the roll center a few inches...- drobbie
- Post #1,529
- Forum: Mechanical Engineering
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Automotive Race car suspension Class
Ranger Mike, WIth winter the time to learn, we all should have read through every thread here (I know I did) and I thank you for such great information. For my self, we have been working on the geometry of my friend's late model stock car. (8 inch tires, Coilover suspension and limited HP) We...- drobbie
- Post #1,422
- Forum: Mechanical Engineering
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Automotive Race car suspension Class
Thanks Ranger Mike, To me it was the most logical place but in seeing other references I was wondering if I was ding it wrong. As always great info here to keep referring back to.- drobbie
- Post #1,377
- Forum: Mechanical Engineering
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Automotive Race car suspension Class
With the off-season upon us and time to make our cars better, I have a question. I have and will again measure my front to plot out the roll center in hopes of improving our performance. But before I embark on that task I have a question concerning determining the correct center line. When...- drobbie
- Post #1,375
- Forum: Mechanical Engineering
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Automotive Race car suspension Class
Great Post Ranger Mike, I can't tell you how many times I see teams make small mistakes on t consistency, especially with stagger tapes. Those things stretch easily, or even worse I see one guy with one tape measure on each tire and their yelling across at each other the numbers. I like the...- drobbie
- Post #1,250
- Forum: Mechanical Engineering
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Automotive Race car suspension Class
Great explanation and example. I can now use this to understand what happens with my car. Thanks for the awesome info.- drobbie
- Post #1,229
- Forum: Mechanical Engineering
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Automotive Race car suspension Class
To follow up with John LNZ's question. When you speak of migration within one inch, I assume you are speaking about 1 inch left or right and not up or down. From my studies RC movement in a straightline up and down is the optimum. Am I correct?- drobbie
- Post #1,227
- Forum: Mechanical Engineering
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Automotive Race car suspension Class
I think they can be very effective if they are set up right. Just like a pull bar, you need ensure its positioned left to right correctly, has the right amount of wrap up, etc. One of the things I think it does excel in is if you adjust the length you can increase or decrease the amount of...- drobbie
- Post #1,175
- Forum: Mechanical Engineering
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Automotive Race car suspension Class
Not in this car. I have in the past when I crewed for several NASCAR Whelen Modified teams. The ones we use have a rod end attach to the chassis and a rubber biscuit to absorb the shock under acceleration and deceleration.- drobbie
- Post #1,173
- Forum: Mechanical Engineering