LOC-sized Fin Aligning Centering Rings The inner tube goes into the outer tube.  And the fins go on straight. For Through-wall Assembly
Developed by Qualman Rocketry, these are laser-cut centering rings which also will hold your fins straight.  They can evenly space 2, 3, or 4 through-wall fins, holding them straight without the need for extra fin jigs for assembly. They are sized for most motor mounts and all common BT-sized body tubes.		The rings come with six slots which can be optionally removed.  For 4-fin assemblies, remove the four at 90 degree intervals.  For 3 fin assemblies, remove the three at 120 degree intervals.  Tack the remaining ones in place with glue if you want to use it as a replacement to one of the cardstock centering rings. These can be also be used in high power rockets, as an additional ring added for alignment.  It's recommended to not replace a plywood ring with a cardstock ring.
	cutaway view of aligning ring
Cardstock Fin Aligning Centering Rings, LOC sized Inner and Outer Tube Size Inner Tube Outside Diameter Outer Tube Inside Diameter Overhang Depth Qty/ Set for 3/32" fins for 1/8" fins *Price Image *Price Image LOC-071 to LOC-152 18mm to 38mm thrust ring .77" 19.4mm 1.52" 38.7mm 0.28" 7mm 4 CRA320711524 $1.49/set CRA080711524 $1.49/set LOC-071 to LOC-214 18mm to 54mm thrust ring .77" 19.4mm 2.14" 54.4mm 0.4" 10mm 4 CRA320712144 $1.99/set 2 sheets CRA080712144 $1.99/set 2 sheets LOC-071 to LOC-256 18mm to 63mm thrust ring .77" 19.4mm 2.56" 65mm 0.59" 15mm 2 CRA320712562 $1.99/set CRA080712562 $1.99/set LOC-071 to LOC-300 18mm to 75mm thrust ring .77" 19.4mm 3.00" 76.2mm 0.59" 15mm 2, CRA320713002 $1.99/set 2 sheets CRA080713002 $1.99/set 2 sheets LOC-071 to LOC-390 18mm to 98mm thrust ring .77" 19.4mm 3.9" 99.1mm 0.59" 15mm 2 CRA320713902 $2.49/set 2 sheets CRA080713902 $2.49/set 2 sheets LOC-095 to LOC-214 24mm to 54mm thrust ring 1.0" 25.4mm 2.14" 54.4mm 0.4" 10mm 4 CRA320952144 $1.99/set 2 sheets CRA080952144 $1.99/set 2 sheets LOC-095 to LOC-256 24mm to 63mm thrust ring 1.0" 25.4mm 2.56" 65mm 0.59" 15mm 2 CRA320952562 $1.99/set CRA080952562 $1.99/set LOC-095 to LOC-300 24mm to 75mm thrust ring 1.0" 25.4mm 3.00" 76.2mm 0.59" 15mm 2 CRA320953002 $1.99/set 2 sheets CRA080953002 $1.99/set 2 sheets LOC-095 to LOC-390 24mm to 98mm thrust ring 1.0" 25.4mm 3.9" 99.1mm 0.59" 15mm 2 CRA320953902 $2.49/set 2 sheets CRA080953902 $2.49/set 2 sheets LOC-114 to LOC-256 29mm to 63mm thrust ring 1.21" 30.7mm 2.56" 65mm 0.31" 8mm 2 CRA321142562 $1.99/set CRA081142562 $1.99/set LOC-114 to LOC-300 29mm to 75mm thrust ring 1.21" 30.7mm 3.00" 76.2mm 0.59" 15mm 2 CRA321143002 $1.99/set 2 sheets CRA081143002 $1.99/set 2 sheets LOC-114 to LOC-390 29mm to 98mm thrust ring 1.21" 30.7mm 3.9" 99.1mm 0.59" 15mm 2 CRA321143902 $2.49/set 2 sheets CRA081143902 $2.49/set 2 sheets LOC-152 to LOC-256 38mm to 63mm thrust ring 1.64" 41.5mm 2.56" 65mm 0.31" 8mm 2 CRA321522562 $1.99/set CRA081522562 $1.99/set LOC-152 to LOC-300 38mm to 75mm thrust ring 1.64" 41.5mm 3.00" 76.2mm 0.59" 15mm 2 CRA321523002 $1.99/set 2 sheets CRA081523002 $1.99/set 2 sheets LOC-152 to LOC-390 38mm to 98mm thrust ring 1.64" 41.5mm 3.9" 99.1mm 0.59" 15mm 2 CRA321523902 $2.49/set 2 sheets CRA081523902 $2.49/set 2 sheets LOC-214 to LOC-390 54mm to 98mm thrust ring 2.26" 57.4mm 3.9" 99.1mm 0.59" 15mm 2 CRA322143902 $2.49/set 2 sheets CRA082143902 $2.49/set 2 sheets LOC-256 to LOC-390 63mm to 98mm thrust ring 2.63" 66.8mm 3.9" 99.1mm 0.35" 9mm 2 CRA322563902 $2.49/set 2 sheets CRA082563902 $2.49/set 2 sheets
* Parts are sometimes built to order.   Please allow 2-3 business days for production. Copyright Qualman Rocketry, 2016