Spitfire222
I only lawn-darted once
- Joined
- Apr 6, 2020
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I have a quick and simple question I was hoping to get some advice with. I'm currently building a Madcow DX3, cardboard 2.6" version.
The instructions indicate that the forward centering ring should be 2" from the end of the motor tube (Image 1). This is further forward than the forward edge of the fin tangs, so there will be no contact between the fins and the forward centering ring (Image 2). Am I interpreting the instructions correctly?
If so, is there any reason it would be a bad idea to move the forward centering ring back so that it contacts the fin tangs? (Image 3). This would create that pocket that sandwiches the fins between both of the centering rings, but the forward centering ring would be quite far back along the motor tube. Or should I simply not worry about the lack of joint between the fin tangs and the forward centering ring?
Image below for (hopefully) clarification. Thanks in advance for any help!
The instructions indicate that the forward centering ring should be 2" from the end of the motor tube (Image 1). This is further forward than the forward edge of the fin tangs, so there will be no contact between the fins and the forward centering ring (Image 2). Am I interpreting the instructions correctly?
If so, is there any reason it would be a bad idea to move the forward centering ring back so that it contacts the fin tangs? (Image 3). This would create that pocket that sandwiches the fins between both of the centering rings, but the forward centering ring would be quite far back along the motor tube. Or should I simply not worry about the lack of joint between the fin tangs and the forward centering ring?
Image below for (hopefully) clarification. Thanks in advance for any help!