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Post by Evolution on May 3, 2011 13:44:28 GMT -6
Derby Evolution is proud to offer two new body designs. I have worked with several of the top builders and have come up with two new designs. Please check them out on my site and as always I am interested in hearing what you think about them.
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Post by murph on May 3, 2011 14:03:22 GMT -6
Steve, Very nice. Will you recommend to the purchaser to fill-in the body cavity with Balsa? I assume that you drill axle holes after gluing the top on? What is body weight? How wide is the axle area in the rears?
Does this type of design (full cut through and top layer installation) have an advantage over my car design (remove bottom layer with milling machine)?
I would order a couple but will have to wait a month. My Trophy Wife is probably going to kill me when she gets the credit card bill. Murph is into wheels and axles right now. Getting ready for second half of season. Going into narrow axle and bearing.
I am still using BSA wood for my cars. I like the wood grain to run perpendicular to the axle. You can see the wood grain in my cars. Murph
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Post by Evolution on May 3, 2011 14:31:29 GMT -6
Murph,
Thank you for the great questions!
As with all my bodies I recommend filling the hollow areas that are not used for weight with balsa. This allows the weight of the body to remain low and allows for better weight placement. This also stiffens the body up some, but my designs could be run without filling them in as the bodies are very strong.
The rear axle area is 1/4 wide in all my bodies. This allows for a little room to move the axle if desired and keeps the area strong.
The full cut through design helps eliminate weight and the top cover plate weighs very little. By doing it this way I am able to make car bodies that are very consistant from one body to the next. The Wolverine body with cover plate weighs about 9.6 grams. Once filled with balsa and sanded it can weigh in at about the same weight. I just put one together today and it weighed 10.3 grams after filling with balsa, glueing together, and some sanding.
The poplar wood is a great wood for derby bodies if pine is not required. It is a hardwood, but is still light weight. Almost all the bodies that I run are of poplar unless I am running a class that requires pine.
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