Silent choice question
#11
Registered
Are the tips baffled? Pics would help.
#12
Registered
You have to look at it as a performance,through-hull design that can go quiet for idle/ no wake zones - not the opposite
#15
Registered
most advertise 4-10% reduction.... most are oriented to keep below legal max limits at idle as the base standards (80-90db)
GGB muffler inserts
GGB muffler inserts
Last edited by speicher lane; 08-17-2019 at 07:19 AM.
#17
Charter Member # 55
Charter Member
most advertise 4-10% reduction.... most are oriented to keep below legal max limits at idle as the base standards (80-90db)
GGB muffler inserts
GGB muffler inserts
#18
I have to disagree completely. I ran for 16 years plus with Rex Marine sound selectors closed 90% of the time and never had a reversion issue. Reversion is more likely with poor exhaust design, massive cam overlap, and at or near idle rpm. Above 1000-1200 rpm there is no time in the reversion pulse to go up stream. I know the Rex Marine unit was bullet proof and could care less if it was closed, open or partially open at any rpm.
#19
Registered
Join Date: Jul 2018
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
Above 3000rpm, the exhaust pressure is working against the system trying to divert it through the prop = killing the solenoids/ cause components to fail prematurely.
You have to look at it as a performance,through-hull design that can go quiet for idle/ no wake zones - not the opposite
You have to look at it as a performance,through-hull design that can go quiet for idle/ no wake zones - not the opposite
#20
Registered
I've always heard that running >3k RPM (for extended periods) with exhaust going thru prop can overheat the drives; more so if engs have been significantly modified. Anyone know of this is true? Sounds plausible to me.