CMI Air Actuated Mufflers
03-01-2019 | 02:51 PM
#21
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Joined: Jun 2018
Posts: 420
Likes: 35
From: Michigan
Anyone have these? Quick question. When the boat is off and you close the flapper how long does the flapper stay closed. I’m bench testing mine and it only stays closed a few seconds after closing them if the compressor is shut off. I didn’t know if the engine was running if that would help them stay closed.
03-01-2019 | 06:07 PM
#24
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Joined: Jan 2003
Posts: 6,020
Likes: 1,522
From: Grand Rapids, MI
Anyone have these? Quick question. When the boat is off and you close the flapper how long does the flapper stay closed. I’m bench testing mine and it only stays closed a few seconds after closing them if the compressor is shut off. I didn’t know if the engine was running if that would help them stay closed.
I put a check valve inline so the air did not bleed back through the pump.
Last edited by Rookie; 03-01-2019 at 06:15 PM.
03-01-2019 | 09:44 PM
#25
Charter Member # 55
Joined: Oct 2000
Posts: 20,248
Likes: 2,497
From: Omaha/LOTO
Anyone have these? Quick question. When the boat is off and you close the flapper how long does the flapper stay closed. I’m bench testing mine and it only stays closed a few seconds after closing them if the compressor is shut off. I didn’t know if the engine was running if that would help them stay closed.
FYI, the ends on the actuator cylinders will unscrew and there are O rings inside that can be replaced.
03-02-2019 | 05:23 AM
#26
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Joined: Jun 2018
Posts: 420
Likes: 35
From: Michigan
i had to replace my cylinders as both were cracked next to the fitting. It is really thin in that spot, bad design. I replaced them with Bimbas, 1/3 the price and all stainless/aluminum construction. Work great. My solenoid was leaking.
03-03-2019 | 07:09 PM
#27
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Joined: Jan 2003
Posts: 6,020
Likes: 1,522
From: Grand Rapids, MI
