Prop Slip Where to start Diagnosis
#31
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From: Ontario, Canada
HI It was purchased as a complete motor. It has a Holley 800 cfm carb which I had rebuilt and set up by one of the local legends because it sat for a year with fuel in it. I replaced the MSD marine ignition with a new unit because it was faulty, new msd blaster coil (because its cheap) and new cap. I didn't change the billet msd distributor that was in the boat but I do plan on changing the magnetic pick up for 2015 as its slightly rusty.
#32
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From: Ontario, Canada
I tried an offshore 4 blade which is a knock off of the bravo 1, unfortunately before I did a top speed run I hit a rock ( 1 hour after putting on the prop) and ended up buying the prop lol.
Because of the prop shops theory that a 4 blade needed to be 2 pitches smaller than a 3 blade to hit the same rpm it was only a 19.
Listening to you folks I think I should be going up.
Because of the prop shops theory that a 4 blade needed to be 2 pitches smaller than a 3 blade to hit the same rpm it was only a 19.
Listening to you folks I think I should be going up.
#33
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From: Ontario, Canada
Not knowing what the OP drive ratio is and entering 1.5 as a guess, I think he is not that bad so far as slip. What gets me and the reason for my prior post, is his engine should have about 100 more hp then my Rinker, yet he turns a smaller prop and cannot turn it more then 5000. I have a 19 pitch prop and only use it when I plan to have a fully loaded boat out for an outing. I'll over rev with the 19 when it's just 4 folks
#34
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From: Ontario, Canada
I think that is great advice, Like I said the prop shop guy recommended trying to find a fit that would allow 5000 but although they are pretty much the best prop shop in Canada they do not by any means specialize in performance props like B Blades
#35
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From: Ontario, Canada
Hi because the boat came with a 19 that revved out I went to a 22 Enertia and couldn't pull more than 50 mph at 4750 rpm, so I went down a pitch only to learn that the speed was the same but he revs were higher. You guys are clearly correct because the Marina that built the engine recommended 4800 WOT and 5000 max rpm
#36
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From: Ontario, Canada
Hi no I haven't weighed it but always felt like it must be more than the 4500 lbs advertised weight. I had it surveyed and it came back with low moisture readings. My previous boat was a sopping mess of soaked foam that I replaced the floor and transom in so I was careful this time.
There are two non accessible areas on each side of the fuel tank enclosure which I intend to have a look into this weekend as I pulled he tank for cleaning this winter. There is a possibility that there could be some wet foam in there but I am pretty sure it would have shown up on the hull readings and boats over 25 feet are not required to have flotation foam. (I think)
Is there a simple way to weigh a boat on a trailer and isolate the boat weight from the truck and trailer or is it simply a matter of weighing the entire rig and doing the math?
There are two non accessible areas on each side of the fuel tank enclosure which I intend to have a look into this weekend as I pulled he tank for cleaning this winter. There is a possibility that there could be some wet foam in there but I am pretty sure it would have shown up on the hull readings and boats over 25 feet are not required to have flotation foam. (I think)
Is there a simple way to weigh a boat on a trailer and isolate the boat weight from the truck and trailer or is it simply a matter of weighing the entire rig and doing the math?
Last edited by stimleck; 10-17-2014 at 02:55 PM.
#38
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From: Ontario, Canada
My name is Billy Tucker not Silly Phucker (or Phil)
Actually back in 94 I had a couple of on water lessons from Tommy Hofstetor when he built our 38 Scarab in 1994. If you think I am green you should have seen us 4 twenty year old's with a 38 scarab that we thought was going to be a world beater for 25 k in upgrades. We each had little lake boats and pooled our money to buy an 86 38 kv with twin 330's. Wanna talk about a dog and a bunch or dumb asses.
Last edited by stimleck; 10-17-2014 at 02:51 PM.
#39
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From: Ontario, Canada
#40
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From: Northern Indiana
After my 7th or 8th boat the one thing I know is how little I know, spending this last year reading OSO taught me that. I think I fall in to the group of 98% of boaters that have about 10% of the knowledge of some of the great marine minds but I do understand trimming out. LMAO,
My name is Billy Tucker not Silly Phucker (or Phil)
Actually back in 94 I had a couple of on water lessons from Tommy Hofstetor when he built our 38 Scarab in 1994. If you think I am green you should have seen us 4 twenty year old's with a 38 scarab that we thought was going to be a world beater for 25 k in upgrades. We each had little lack boats and pooled our money to buy an 86 38 kv with twin 330's. Wanna talk about a dog!
My name is Billy Tucker not Silly Phucker (or Phil)
Actually back in 94 I had a couple of on water lessons from Tommy Hofstetor when he built our 38 Scarab in 1994. If you think I am green you should have seen us 4 twenty year old's with a 38 scarab that we thought was going to be a world beater for 25 k in upgrades. We each had little lack boats and pooled our money to buy an 86 38 kv with twin 330's. Wanna talk about a dog!



