Excalibur Pitch

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NightRider
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Excalibur Pitch

Post by NightRider » Sun Dec 07, 2014 5:31 pm

Going to be bolting a 72" 4-blade Excalibur to my new boat tomorrow. For those of ya'll with experience with them, what has proven to be the best setup, straight pitch or staggered? And if staggered, how many degrees? What seems to be the best wot RPM? Thanks.
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sidejobs
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Re: Excalibur Pitch

Post by sidejobs » Sun Dec 07, 2014 7:45 pm

The advice you should follow is that of the manufacturer. Ask Patti what she recommends. For safety and warranty purposes. Now that I said that. I haven't tried the staggered pitch. I'm anal about all the blades being perfect. I have run this prop at every rpm from 2400-3600 and I will have to say it depends on your intentions. Riding I like it at 3100 because that's what I like, having a lil hot rod if needed. But for someone else I would say 2900 because it cruised real nice when set for a max of 2900. When I raced it a few times 3400 was the best for my set up. I'm certain you will need to do some trials yourself. What engine/boat do you have ?
Last edited by sidejobs on Sun Dec 07, 2014 8:03 pm, edited 1 time in total.
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Re: Excalibur Pitch

Post by NightRider » Sun Dec 07, 2014 7:52 pm

Alright, appreciate the input. I'll play with it. Going on a 13' Hamant/Upstack.
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sidejobs
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Re: Excalibur Pitch

Post by sidejobs » Sun Dec 07, 2014 8:02 pm

Upstack 540 I assume ? I would try 10 degrees to start. Then go up or down from there. I'm running mine at 10.5
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Re: Excalibur Pitch

Post by Olf Art » Sun Dec 07, 2014 9:03 pm

Be very cautious about using staggered pitch in any prop ..... it can set up some strange harmonics. I'm definitely
with sidejobs on 'anal' about pitching. Any vibration at all means that something still ain't right ..... they should
spin up like a big electric motor. Anything less means you've still got work to do. JMO
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Whitebear
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Re: Excalibur Pitch

Post by Whitebear » Sun Dec 07, 2014 9:29 pm

Ken said it exactly how I feel too.....
"The Constitution is not so the government can restrain the people, it is so the people can restrain the government." Patrick Henry
The government cannot give anything --
that they have not first taken from someone else.

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Re: Excalibur Pitch

Post by swampdragon » Mon Dec 08, 2014 12:53 pm

Totally up to you I run my at 8.5 on the leading and 9.5 on the trailing turning 2850 on my 520.
Works great with no vibration.

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Re: Excalibur Pitch

Post by stroked470 » Mon Dec 08, 2014 1:04 pm

Whirlwind recommends in there installation instructions on the Excalibur to run them staggered but when I had mine I ran it squared.

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Re: Excalibur Pitch

Post by NightRider » Mon Dec 08, 2014 1:06 pm

Matt, did you ever try it staggered, and did you like the Excalibur? If I remember right you had a short one (68") on a 540.
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Re: Excalibur Pitch

Post by NightRider » Mon Dec 08, 2014 1:07 pm

Matt, did you ever try it staggered, and did you like the Excalibur? If I remember right you had a short one (68") on a 540.
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stroked470
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Re: Excalibur Pitch

Post by stroked470 » Mon Dec 08, 2014 1:22 pm

No I never played with it long enough to change it to a staggered configuration. I freaking loved it man, I now have a 72" 5 blade razor x and honestly think the Excalibur pushed as hard and was damn sure quieter. I would start at atleast 10 degrees like sidejobs said, my stroker angle valve took wayyyyy more than that though. I was running 13 degrees with it squared and could turn it 3400, but keep in mind I had the short one....I think it was a 68", cant remember to be honest....knowing me though I am sure it was due to me having the racer mentality of wanting to snap a prop instead of length for greater push. But that stroker 540 was a freak so I am sure that had a lot to do with me turing it that hard with that kind of pitch. Also you will void the warranty if you turn it past I think 3250??? Don't quote me on that exact RPM but its close to that, you will have to call Patti and she will tell you the limits

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Re: Excalibur Pitch

Post by sidejobs » Mon Dec 08, 2014 3:47 pm

I have the 72" and on my dd caddy at 10.5 degrees all blades I'm turning almost 3100
I don't recall seeing whirlwinds instructions mentioning staggered. But I prob didn't read them either :lol:
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Re: Excalibur Pitch

Post by NightRider » Mon Dec 08, 2014 4:11 pm

Thanks for the feedback man! I bought the prop used from Glenn at Southern Enterprises and I believe he said it is straight pitched and came off of an Upstack. Doubt it will swing it as hard as that stroker motor, but hoping it does pretty well. Just had the engine completely overhauled, it is a small journal Upstack with a phase 3 cam, 10:1's, and lightened a few things up..... We'll see tomorrow!
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Re: Excalibur Pitch

Post by sidejobs » Mon Dec 08, 2014 4:11 pm

Image
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Re: Excalibur Pitch

Post by stroked470 » Mon Dec 08, 2014 6:42 pm

I am certain it says in the instructions I have to set the leading blade at one pitch and the trailing blade at another. I am pretty sure I still have them somewhere. Shitttt maybe I dreamed it though? I know it will work either way regardless. I will have to figure out where I read that at, now you have me wondering!!!

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Re: Excalibur Pitch

Post by stroked470 » Mon Dec 08, 2014 6:43 pm

Man I bet it will swing close to what that stroker was swinging. That's a stud of a motor man!

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Re: Excalibur Pitch

Post by stroked470 » Mon Dec 08, 2014 6:51 pm

Ok I just read the instructions, I stand corrected. It doesn't say to stagger them. It does show an illustration of a high pitch setting and a low pitch setting. That must be where I got it from.

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sidejobs
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Re: Excalibur Pitch

Post by sidejobs » Mon Dec 08, 2014 6:53 pm

stroked470 wrote:Ok I just read the instructions, I stand corrected. It doesn't say to stagger them. It does show an illustration of a high pitch setting and a low pitch setting. That must be where I got it from.
I had to pull mine out and recheck. Lol. You had me thinking hard !
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Re: Excalibur Pitch

Post by stroked470 » Mon Dec 08, 2014 7:01 pm

Hahahaha man I know I read it somewhere though. Maybe it was talking with the white boys, or terry lee....I am not certain now. I am gonna be up all night now trying to remember where in the hell I read or was told that.

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Re: Excalibur Pitch

Post by sidejobs » Mon Dec 08, 2014 7:07 pm

Oihh shizzz! Dem white boys will tell ya anything :lol:
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Re: Excalibur Pitch

Post by stroked470 » Mon Dec 08, 2014 7:12 pm

Yeah those faukers are a mess.

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Re: Excalibur Pitch

Post by NightRider » Wed Dec 10, 2014 7:35 am

How exactly are you guys setting your pitch? Zeroing protractor against a cylinder or the hub, leveling a blade at a time (from the bottom), and then how far from the tip are you measuring the pitch at? Thanks, never ran skinny blades, and if you check your pitch from half to 1 inch either way it seems to make a big difference. Definitely going to track them also when I have the RPMs were I want.
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Re: Excalibur Pitch

Post by sidejobs » Wed Dec 10, 2014 11:49 am

Zero it on the hub. Measure in the same distance on all blades 2-3" and set them all the same. Oh and read the instructions :violent1: lol
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Re: Excalibur Pitch

Post by stroked470 » Wed Dec 10, 2014 11:51 am

Read the instructions is key. Don't dream shitt up like I did!

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Re: Excalibur Pitch

Post by NightRider » Wed Dec 10, 2014 12:54 pm

Lol! Thanks.
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