Drive Guardian
06-26-2019 | 02:53 PM
#11
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Joined: Jun 2007
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From: Merritt Island, FL
Drive Guardian is a clutch that is primary designed to absorb the shock of a prop reentering the water.
I'm no expert and suggest you reach out to Performance Marine/Saris Racing who sell and race with it. They will tell you in racing applications it greatly extends drive life, as they are constantly launching the boat.
Not sure it will help all that much in a heavy boat with big hp in flat water..
I'm no expert and suggest you reach out to Performance Marine/Saris Racing who sell and race with it. They will tell you in racing applications it greatly extends drive life, as they are constantly launching the boat.
Not sure it will help all that much in a heavy boat with big hp in flat water..
I find here that running fast across swallows in wind chop is hard, the boat is pretty much skipping across the top and I have heard the props break lose and grab before there is any way to catch it. Its not like the boat comes out of the water as much as it just breaks lose very fast and grabs but you don't even feel it.
In that type I would have to think having what is basically a slipper clutch has to help the drive shock.
06-27-2019 | 10:05 AM
#12
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Joined: Aug 2010
Posts: 2,227
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From: Cape Coral FL
06-28-2019 | 04:47 PM
#13
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Joined: Jun 2003
Posts: 760
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From: Jacksonville, FL
I have one on a 28' cat with blower motor. I can't tell that it has helped at all. I destroyed the upper gears in an IMCO SC in about 10 hours. Drive broke again in about 8 hours after rebuild with new upper and lower gears. I haven't taken it apart yet to see what broke. They are certainly a well made piece, and for moderate HP would probably help, but not in my case.
28' Advantage Sport Cat
565ci/420 megablower
880hp/910tq
Both times my drive blew, I was just cruising around 70mph on flat water. Of course that is around 4000rpm where the engine makes max torque.
Anyone have a SCX they are looking to part with?
28' Advantage Sport Cat
565ci/420 megablower
880hp/910tq
Both times my drive blew, I was just cruising around 70mph on flat water. Of course that is around 4000rpm where the engine makes max torque.
Anyone have a SCX they are looking to part with?
06-28-2019 | 06:45 PM
#14
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From: On A Dirt Floor
06-28-2019 | 11:53 PM
#15
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Joined: Nov 2003
Posts: 825
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From: Antioch, IL
I had a 720 HP ProCharged 280 Velocity that would always break on glass flat water decelerating. Would blow the top cap off the drive, after 7 I went with B-Max and never broke another. I'm not making anywhere near that HP but have twins now so running similar speeds and am hoping this may be a less expensive option.
06-29-2019 | 04:25 PM
#16
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Joined: Aug 2010
Posts: 2,227
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From: Cape Coral FL
At 4000rpm on flat water, the Drive guardian isn’t doing anything since it’s designed to slip at ~10% above max torque. IE it’s not the drive guardians fault that your drive keeps breaking. Even with 900ft-lbs, that IMCO SC should live for a long time unless you really hammer the throttles. Sounds like something else’s is up with the drive or it wasn’t assembled properly..?
07-09-2019 | 06:39 AM
#18
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Joined: Oct 2013
Posts: 487
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From: Salisbury N.C.
looks like a typical high torque , clutch shaft failure .
Your making alot of torque around 4000 and your throtlle is probably 75-80%
Glass smooth has the most drag on your hull , I see it alot .
Guy just cruisein with the wife and Kids ...... Bang.
Your making alot of torque around 4000 and your throtlle is probably 75-80%
Glass smooth has the most drag on your hull , I see it alot .
Guy just cruisein with the wife and Kids ...... Bang.
07-25-2019 | 11:39 AM
#19
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Joined: Apr 2001
Posts: 4,213
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From: Chicago il
Snapmorgan…. you need to send the guardian back to Mike for an adjustment if you have not done so already. Each Guardian is calibrated as best as possible for your set up. Breaking shafts comes from mismatched entry speeds. Call John at the Bravo shop. He has a bunch of nice shafts and for an XR
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