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Post by ncdragracer on Mar 25, 2018 20:27:42 GMT -7
Rookie question.
I see that a lot of you guys changing magnets and locations, can some one shed some light as to what differences it makes.I always hear the words high and low down force, does this also pertain to drag racing as well?
And how do magnets play into tires and wheels, figured softer the better? but all is not the case from I am reading / hearing / seeing. Just looking for some advice when it comes to the In line cars I am diving into...
Thanks in advance,
Robert
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Post by AJR on Mar 26, 2018 8:00:03 GMT -7
As far as inlines go, I do not change their locations, but I have changed them out for stronger ones if available. Even on the pancake stuff I don't typically change the location the stock magnet would be in. Even on the non magna traction chassis I still put the magnets in the normal locations. I have only ever seen a couple of racers put magnets in different areas on the chassis, use more than two, or stack them. Rules normally call for "two only" unless running house rules of some sort.
You can look at traction magnets as weight. The stronger the magnet, the more weight is put on the car....or downforce. Ideally you only want enough downforce to control wheel spin and hop and also control deslotting. If using wheelie bars then you are basically controlling the wheels with the magnets since the bars will prevent deslot. On the faster builds stronger magnets and more downforce are needed. A tire that is too soft will compress and possibly allow chassis to drag. I have really only seen this as a problem for me when using silli foams. The only tires I use are silicone, urethane, and silli foams. This is how I look at traction magnets when applied. Hope this helps.
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Post by dave632 on Mar 26, 2018 8:28:17 GMT -7
You can use to strong a magnet for a certain chassis. I tried neo magnets on my BSRT unlimiteds and it actually slowed the cars down. Made it tough to get them off the steel stop strips also. The gauss reading on these magnets were in the 4000 + range strongest I have seen. In some cases you can only fit a pretty small magnet even neo magnets will not have a great effect if they are to small. The life like dot magnets are a good example of this. I purchased a variety of dot and rectangular magnets from suppliers and experimented. As Jeff said the tire and magnet combo has to be determined by trial and error. I generally use soft to medium tires with small traction magnets or as big as I can fit. I definitely recommend using traction magnets as the difference is big between magnet and non magnet cars. As far as location it seems like just before the rear tire and over the power rail is about the best.
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Post by ncdragracer on Mar 26, 2018 15:25:32 GMT -7
Thanks Guys
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Post by AJR on Mar 26, 2018 17:12:26 GMT -7
As Dave said......it is definitely a trial and error type thing. Some magnets can actually make the chassis bend. That much downforce is only needed for the extremely fast cars though. You may already know about wheelie bars, but I have found that a lot of times both wheelie bars and traction magnets are needed. Just because you have one doesn't mean you don't need the other.
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