Mercury Through The Years...

**2us70** · 07-25-2018, 12:19 PM

How does that 3 blade cleaver run on that boat? I tried a couple of them on my 13 Action but couldn't make them work.l QUOTE=AZMIDLYF;3061806]Attachment 413437[/QUOTE]

**AZMIDLYF** · 07-25-2018, 02:16 PM

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**DanUmbarger** · 07-25-2018, 04:19 PM

That would be interesting to know...back in the early 70's I ran a 13' Hustler with an 80 Merc and I ran a 2 blade chopper .....that set up ran 64mph. Ran a cleaver on my tunnel but didn't know they had thru hub cleavers for the V boats at that time.

Originally Posted by 2us70

How does that 3 blade cleaver run on that boat? I tried a couple of them on my 13 Action but couldn't make them work.l QUOTE=AZMIDLYF;3061806]Attachment 413437

[/QUOTE]

**AZMIDLYF** · 07-25-2018, 11:31 PM

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**bernie** · 07-26-2018, 07:21 AM

Originally Posted by 2us70

How does that 3 blade cleaver run on that boat? I tried a couple of them on my 13 Action but couldn't make them work.l QUOTE=AZMIDLYF;3061806]Attachment 413437

[/QUOTE] Its an 11X18. my 2 blade 10X20 runs better. Still playing with this one - have reduced the daimeter and made a rounded tip to try and get some RPM's up - without putting a big plate on the transom I can't go any higher - but I would probably run out of water psi also.

**2us70** · 07-26-2018, 10:37 AM

I never ran an XS 49. Does it have low water pick-ups? I was always able to go as high as the props needed without water pick-up problems on the standard gear case. That being said, often the only gauge I would run in the boat was the water pressure gauge. In a race the speedo didn't matter and just added drag and I didn't worry about revs. You just turned it what ever it took.

**Capt.Insane-o** · 07-26-2018, 11:25 AM

Originally Posted by AZMIDLYF

*sigh* every time I see a speedmaster with the skeg cut off I die a little bit inside

**Onetime** · 07-26-2018, 12:08 PM

Yes but the boat has a fixed rudder.

**peterse90** · 07-26-2018, 02:47 PM

Its an 11X18. my 2 blade 10X20 runs better. Still playing with this one - have reduced the daimeter and made a rounded tip to try and get some RPM's up - without putting a big plate on the transom I can't go any higher - but I would probably run out of water psi also.[/QUOTE]

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When I first ran my SE Seebold/Merc 650XS I had an 18p 3-blade thru-the-hub cleaver just like the one in the picture of this Checkmate. It was a pretty good prop with a little 'work' done to it. Pretty much everyone who were racing the 650XS were using the 18p 3-blade thru-the-hub cleaver. BUT I had to be different. I wanted something that as far as I was concerned nobody else had. I met Jim Caldwell at a race here in Canada and he had a 19p 3-blade over-the-hub cleaver that I tried and liked so I bought it and a 20p 3-blade over-the-hub cleaver that he had as well. I could turn the 19p at about 7500rpm and the 20p about 150/200 rpm less. The 20p did not accelerate as well but was maybe 1 to 2 mph faster once you got going. Only trouble with the over-the hubs was in sloppy water they could blow-out pretty bad. As well we were using aviation fuel and mixing at about 18:1 (same as a Twister).