Author Topic: Merc Laser 2 21p prop hub identification  (Read 8650 times)

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Offline Hyperacme

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Re: Merc Laser 2 21p prop hub identification
« Reply #40 on: October 11, 2018, 05:33:08 PM »
With hydraulic steering I don't think you need the tab.
You could get a blank plate or cut the fin off on the one you have.

Offline Plugcheck

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Re: Merc Laser 2 21p prop hub identification
« Reply #41 on: October 11, 2018, 10:15:21 PM »
The torque tab is important to cancel the props desire to affect the steering.  It's a trial and error process, I like to set mine for zero steering effect at the rpm I use most often.  I would either buy the correct profile for your application or, you could trim yours for clearance and test for best results.  Personally, I'd trim it.  With a SS prop, about 7-8mm is more than enough.
Michael
1979 CVZ-18 388 CI Vortec Mouse
1980 CVX-16SS 140 Mercruiser
1979 CVX-16 Johnson 175
2002 Bennington 2275CC 90 Mercury
1985 Intimidator project
1989 Lowe 200 Redneck fishin Toon
2001 Godfrey Sweetwater pontoon 115 Rude

Offline UKMike

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Re: Merc Laser 2 21p prop hub identification
« Reply #42 on: October 12, 2018, 12:53:47 AM »
Thanks all, Plugcheck, when you say trim for clearance do you mean grind back the new tab until I have enough clearance? id be a little worried about doing that due to the prop flexing under pressure unless you have an idea of how much the minimal clearance is required to be safe? I just purchased one of these to try, do you think this will do the job?

 

Offline Plugcheck

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Re: Merc Laser 2 21p prop hub identification
« Reply #43 on: October 12, 2018, 07:42:56 AM »
Since you have the new offset tab, give it a try.  An aluminum prop flexes a bit more than a stainless prop does.
Michael
1979 CVZ-18 388 CI Vortec Mouse
1980 CVX-16SS 140 Mercruiser
1979 CVX-16 Johnson 175
2002 Bennington 2275CC 90 Mercury
1985 Intimidator project
1989 Lowe 200 Redneck fishin Toon
2001 Godfrey Sweetwater pontoon 115 Rude

Offline UKMike

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Re: Merc Laser 2 21p prop hub identification
« Reply #44 on: October 12, 2018, 04:08:14 PM »
Thanks Michael, appreciate your advice.

Regards
Mike