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PML Centering Rings

 

Pml manufactures a full line of heavy duty motor mount tube centering rings and bulk plates to fit their airframe tubes. Centering rings and bulk plates for airframe 3.9" and smaller are 3/16" birch plywood, while centering rings and bulk plates for airframes 6.0" and larger are 1/2" 9-PLY, birch plywood. Multiple motor mount configurations are available upon request.

"Bulkhead Plates" fit inside the airframe tube while "Coupler Bulkhead Plates" fit inside the coupler tubing.

Centering Rings (CR)" fit inside the airframe tubing while "Coupler Centering Rings (CCR)" fit inside the coupler tubing.

 

Order  # Description Fits Airframe. For MMT Thickness Price
CR-1.5-1.1 Centering Ring 1.525" 1.145" 0.1875" $2.35
CR-2.1-1.1 Centering Ring 2.152" 1.145" 0.1875" $2.58
CR-2.1-1.5 Centering Ring 2.152" 1.525 0.1875" $2.58
CR-2.5-1.1 Centering Ring 2.560" 1.145" 0.1875" $2.58
CR-2.5-1.5 Centering Ring 2.560" 1.525" 0.1875" $2.58
CR-2.5-2.1 Centering Ring 2.560" 2.152" 0.1875" $2.58
CR-3.0-1.1 Centering Ring 3.002" 1.145" 0.1875" $3.18
CR-3.0-1.5 Centering Ring 3.002" 1.525" 0.1875" $3.18
CR-3.0-2.1 Centering Ring 3.002" 2.152" 0.1875" $3.18
CR-3.9-1.1 Centering Ring 3.900" 1.145" 0.1875" $3.54
CR-3.9-1.5 Centering Ring 3.900" 1.525" 0.1875" $3.54
CR-3.9-2.1 Centering Ring 3.900" 2.152 0.1875" $3.54
CR-3.9-3.0 Centering Ring 3.900" 3.002" 0.5" $5.22
CR-6.0-1.5 Centering Ring 6.007" 1.525 0.5" $7.50
CR-6.0-2.1 Centering Ring 6.007" 2.152" 0.5" $7.50
CR-6.0-3.0 Centering Ring 6.007" 3.002" 0.5" $7.50
CR-6.0-3.9 Centering Ring 6.007" 3.900" 0.5" $7.50
CR-7.5-2.1 Centering Ring 7.512" 2.152" 0.5" $8.82
CR-7.5-3.0 Centering Ring 7.512" 3.002" 0.5" $8.82
CR-7.5-3.9 Centering Ring 7.512" 3.900" 0.5" $8.82
CR-11.4-2.1 Centering Ring 11.41" 2.152" 0.5" $12.54
CR-11.4-3.0 Centering Ring 11.41" 3.002" 0.5" $12.54
CR-11.4-3.9 Centering Ring 11.41" 3.900" 0.5" $12.54
CCR-11.4-6.0 Coupler Centering Ring 11.41" 6.007" 0.5" $13.95
CCR-11.4-7.5 Coupler Centering Ring 11.41" 7.512" 0.5" $13.95
 

 

Order  # Description Fits Airframe. For CT Thickness Price
CCR-2.1-1.1 Coupler Centering Ring 2.152" 1.145" 0.1875" $2.70
CCR-2.1-1.5 Coupler Centering Ring 2.152" 1.525" 0.1875" $2.70
CCR-2.5-1.1 Coupler Centering Ring 2.560" 1.145" 0.1875" $2.70
CCR-2.5-1.5 Coupler Centering Ring 2.560" 1.525" 0.1875" $2.70
CCR-3.0-1.1 Coupler Centering Ring 3.002" 1.145" 0.1875" $3.30
CCR-3.0-1.5 Coupler Centering Ring 3.002" 1.525" 0.1875" $3.30
CCR-3.0-2.1 Coupler Centering Ring 3.002" 2.152" 0.1875" $3.30
CCR-3.9-1.1 Coupler Centering Ring 3.900" 1.145" 0.1875" $3.54
CCR-3.9-1.5 Coupler Centering Ring 3.900" 1.525" 0.1875" $3.54
CCR-3.9-2.1 Coupler Centering Ring 3.900" 2.152" 0.1875" $3.54
CCR-3.9-3.0 Coupler Centering Ring 3.900" 3.002" 0.5" $5.34
CCR-6.0-1.5 Coupler Centering Ring 6.007" 1.525" 0.5" $7.62
CCR-6.0-2.1 Coupler Centering Ring 6.007" 2.152" 0.5" $7.62
CCR-6.0-3.9 Coupler Centering Ring 6.007" 3.900" 0.5" $7.62
CCR-6.0-3.0 Coupler Centering Ring 6.007" 3.002" 0.5" $7.62
CCR-7.5-2.1 Coupler Centering Ring 7.512" 2.152" 0.5" $8.95
CCR-7.5-3.0 Coupler Centering Ring 7.512" 3.002" 0.5" $8.95
CCR-7.5-3.9 Coupler Centering Ring 7.512" 3.900" 0.5" $8.95
CCR-11.4-2.1 Coupler Centering Ring 11.41" 2.152" 0.5" $12.90
CCR-11.4-3.9 Coupler Centering Ring 11.41" 3.900" 0.5" $12.90
CCR-11.4-3.0 Coupler Centering Ring 11.41" 3.002" 0.5" $12.90
CCR-11.4-6.0 Coupler Centering Ring 11.41" 6.007" 0.5" $13.68
CCR-11.4-7.5 Coupler Centering Ring 11.41" 7.512" 0.5" $13.68
 

 

Order  # Description Fits Airframe. For MMT Thickness Price
BP-1.1 Bulkplate 1.145" - 0.1875" $1.74
BP-1.5 Bulkplate 1.525" - 0.1875" $1.74
BP-2.1 Bulkplate 2.152" - 0.1875" $1.86
BP-2.5 Bulkplate 2.560" - 0.1875" $1.86
BP-3.0 Bulkplate 3.002 - 0.1875" $1.98
BP-3.9 Bulkplate 3.900" - 0.1875" $2.10
BP-6.0 Bulkplate 6.007" - 0.5" $7.14
BP-7.5 Bulkplate 7.512" - 0.5" $7.75
BP-11.4 Bulkplate 11.41" - 0.5" $13.15
 

 

Order  # Description Fits Airframe. For MMT Thickness Price
CBP-1.5 Bulkplate for Coupler 1.525" - 0.1875" $1.74
CBP-2.1 Bulkplate for Coupler 2.152" - 0.1875" $1.74
CBP-2.5 Bulkplate for Coupler 2.560" - 0.1875" $1.74
CBP-3.0 Bulkplate for Coupler 3.002" - 0.1875" $1.86
CBP-3.9 Bulkplate for Coupler 3.900" - 0.1875" $2.10
CBP-6.0 Bulkplate for Coupler 6.007" - 0.5" $7.14
CBP-7.5 Bulkplate for Coupler 7.512" - 0.5" $7.75
CBP-11.4 Bulkplate for Coupler 11.4" - 0.5" $13.15

Custom Centering Rings Motor Mount Hole Drilling: PML will drill additional motor mount holes in your centering rings for you. Simply enter the total number of holes you need, indicate that a custom order is requested. Number of holes, hole diameter, please allow a minimum of 0.125" between holes and edge of ring.

 

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