Product Description

Elastomeric engine isolator gap assembly used to reduce vibration transmission from the powerplant to the airframe on select Cessna, Cirrus, Grumman American, Tiger, and Reims aircraft models. It functions as a vibration isolation element within the engine mounting system to improve engine stability and protect surrounding aircraft structure.

0 1. Overview

The J-9613-59HA isolator is identified as a specialized gap component within an engine vibration isolation system produced by Barry Mounts Hutchinson. It is described as an elastomeric mount that forms part of a dynafocal style suspension designed to isolate engine vibrations and reduce noise transmission into the aircraft structure. For this family of mounts, the isolation system relies on compression-type couplings that use bonded rubber joints pressed into sockets in metal hubs to provide flexible support while maintaining engine retention under high loads.

This isolator is designed and approved for installation without a jellybag center spacer when used in place of a corresponding Lord elastomeric mount. The Hutchinson elastomer in this configuration has higher damping, which allows the isolator assembly to achieve damping performance equivalent to the Lord assembly without the additional spacer. The assembly is described as having equivalent isolation performance with longer fatigue life while also removing potential failure modes associated with the spacer component.

The J-9613-59HA is listed with a product weight of 1.5 pounds and nominal product dimensions of 3.5 by 3.5 by 3.5 inches. For export and customs purposes, it carries Schedule B code 8487900080 and export control classification number 9A991.d. Documented aircraft compatibility includes Cessna 177, Cirrus SR20, Grumman American AA-5A Cheetah, AA-5B Tiger, AG-5B Tiger, and Reims FR 177 RG, with use as an isolator for engines installed on these models.

0 2. Key Features

  • Elastomeric engine isolator gap used in aircraft engine mounting systems
  • Designed to function as a dynafocal-style vibration isolation element between engine and airframe
  • Uses an elastomer with higher damping than the corresponding Lord elastomeric mount
  • Configured for installation without a jellybag center spacer while maintaining damping performance
  • Associated isolator assembly is described with equivalent isolation performance and longer fatigue life compared to the spacer-equipped configuration
  • Provides vibration isolation and noise reduction for the engine installation on specified aircraft models
  • Listed with product weight of 1.5 pounds and nominal dimensions of 3.5 x 3.5 x 3.5 inches
  • Assigned Schedule B code 8487900080 and ECCN 9A991.d for export classification
0 3. Specifications

Part number: J-9613-59HA
Product type: Elastomeric engine isolator gap
Manufacturer: Barry Mounts Hutchinson
Isolation concept: Dynafocal-style vibration isolation using elastomeric elements
Installation detail: Designed and approved for use without a jellybag center spacer in place of a Lord elastomeric mount
Product weight: 1.5 lb
Product dimensions: 3.5 in x 3.5 in x 3.5 in
Schedule B: 8487900080
ECCN: 9A991.d
Documented compatible aircraft: Cessna 177; Cirrus SR20; Grumman American AA-5A Cheetah, AA-5B Tiger, AG-5B Tiger; Reims FR 177 RG

FAQs

01. What is the primary function of the J-9613-59HA isolator?

The J-9613-59HA isolator functions as an elastomeric gap element in the engine mounting system to isolate engine vibrations and reduce noise transmission to the airframe.

02. Which aircraft models are documented as compatible with the J-9613-59HA isolator?

Documented compatible aircraft include Cessna 177, Cirrus SR20, Grumman American AA-5A Cheetah, AA-5B Tiger, AG-5B Tiger, and Reims FR 177 RG.

03. How does the J-9613-59HA design differ from a configuration using a jellybag spacer?

The J-9613-59HA is designed and approved for installation without a jellybag center spacer because its higher damping elastomer provides damping performance equivalent to the Lord isolator assembly that uses the spacer.

04. What are the nominal weight and dimensions of the J-9613-59HA isolator?

The J-9613-59HA isolator has a listed product weight of 1.5 pounds and nominal dimensions of 3.5 by 3.5 by 3.5 inches.

05. What export classification data is assigned to the J-9613-59HA isolator?

The J-9613-59HA isolator is assigned Schedule B code 8487900080 and export control classification number 9A991.d.

Didn’t find your answer?

Don't hestitate to contact us, we’ll reply as soon as possible.