dg1
Well-Known Member
- Joined
- Sep 14, 2011
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I started my 24 mm Patriot build last night. Got the MMT installed, marked the BT for the four fins and LL, sanded the fins and was going to start installing them and then just said hmm...
On non-TTW type construction, on rockets who's fins trailing edge is forward of the aft end of the BT, how do you make sure that the fins are perpendicular to the BT and that opposing fins are 180 degrees apart with out the Estes fin dohicky jig?
When I was a kid I just eyeballed the postion of the fin relative to perpendicular (with sometimes less than spectacular results). I was hoping to be a little more precise than that now. I did just eyeball them for my latest Red Max...
I was thinking of clamping scrap balsa to the fins to make the trailing edge overhang the end of the BT and then aligning them like I normally do with a straight edge. Any easier tricks? What about 3 FNC rockets?
On non-TTW type construction, on rockets who's fins trailing edge is forward of the aft end of the BT, how do you make sure that the fins are perpendicular to the BT and that opposing fins are 180 degrees apart with out the Estes fin dohicky jig?
When I was a kid I just eyeballed the postion of the fin relative to perpendicular (with sometimes less than spectacular results). I was hoping to be a little more precise than that now. I did just eyeball them for my latest Red Max...
I was thinking of clamping scrap balsa to the fins to make the trailing edge overhang the end of the BT and then aligning them like I normally do with a straight edge. Any easier tricks? What about 3 FNC rockets?