TheSamurai
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I always see people discussing BT-55 and BT-60 and BT-80 and so forth. I understand that BT stands for "Body Tube" but what exactly does that refer to?
For instance if I need a coupler for my Estes Ventris how do I know what size coupler to get? My body tube diameter is 2.5" but that isn't how the couplers are listed.
Is there a chart or something that someone can post?
For instance if I need a coupler for my Estes Ventris how do I know what size coupler to get? My body tube diameter is 2.5" but that isn't how the couplers are listed.
Is there a chart or something that someone can post?