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psychobilly
04-06-2013, 04:27 PM
Well as much as I hate use'n that word I will call the thread that as 99.9 percent people think a Boat has a Propeller like an airplane... I don't want to go there... Please, start another thread..... lol 8p

Anyway, I have the 240SC and I was want'n to get a new wheel so I could use the one I got on it now as a back up. 454BB with a 1 to 1 gear. 1" Shaft and Tapered Key. I think it's a lefty???


92451


I got to looking and there's not a whole bunch to choose from out there. Well not as many as there is fer others.

I was thinking this one but Skidim don't stock it... They have the right handed one but I'm pretty sure mines a lefty???


OJ P/N: 1270 14 X 16 LC 1" 4 Blade is what I was looking at...


Any recommendations from the experts???

snork
04-06-2013, 04:32 PM
LH yes 14.25x15.5
call it what you want some would call it a screw or a prop sometimes a pos paperweight

88 PS190
04-06-2013, 04:34 PM
Eric @ OJ props is a member on the forum. They would know what your boat should have for your usage.

j.mccreight@hotmail.com
04-06-2013, 04:40 PM
Well as much as I hate use'n that word I will call the thread that as 99.9 percent people think a Boat has a Propeller like an airplane... I don't want to go there... Please, start another thread..... lol 8p

Anyway, I have the 240SC and I was want'n to get a new wheel so I could use the one I got on it now as a back up. 454BB with a 1 to 1 gear. 1" Shaft and Tapered Key. I think it's a lefty???


92451


I got to looking and there's not a whole bunch to choose from out there. Well not as many as there is fer others.

I was thinking this one but Skidim don't stock it... They have the right handed one but I'm pretty sure mines a lefty???


OJ P/N: 1270 14 X 16 LC 1" 4 Blade is what I was looking at...


Any recommendations from the experts???


I have a 13 x 14 LH 1" 4 blade that you are more than welcome to, I don't know how it would do with the bbc though. It might let the revs get on up there past 5 thou. It's fresh from bauman.

gts-20
04-06-2013, 04:56 PM
Blair, is that carpet I see on those bunks in the pic? What happened to the Ultimate bunks?

psychobilly
04-06-2013, 05:14 PM
I have a 13 x 14 LH 1" 4 blade that you are more than welcome to, I don't know how it would do with the bbc though. It might let the wot get on up there past 5 thou. It's fresh from bauman.


Yeah I seen yo uhad it but it's a bit small at 13".... She turns pretty hard at about 4600 WOT. I can't imagine the 13"...


QUOTE Mike Blair, is that carpet I see on those bunks in the pic? What happened to the Ultimate bunks?

Good observation bro but that's the days long ago before UBBs got installed. Heck the Strut was still bent in that pic. lol I straightened it redneck style and she's been good every since. lol Like we said the other day, I know it's NOT recommended but I have done it and it works fine if you take you time. lol


QUOTE 88 Eric @ OJ props is a member on the forum. They would know what your boat should have for your usage.

Yeah I know, I was hope'n he woudl see it, hence my coment about the experts...

j.mccreight@hotmail.com
04-06-2013, 05:35 PM
Different prop, this one actually lowered my revs about 100 to pre mod state while picking up a mph,
Pm sent

psychobilly
04-06-2013, 05:40 PM
Well, would ya be interested in me coming by and picking it up when I get home around the 18th? Well, maybe the following week... Maybe let me test it out and see what she does? If it werks out I'll pay ya fer it. I have to come over your side of town anyway when I get home to get the OLs Explorer serviced at Planet Ford 59.

no pm in inbox

Maybe Eric will chime in here in a bot and let us know what he thinks...

j.mccreight@hotmail.com
04-06-2013, 05:47 PM
Check your pm

EJ OJPROP
04-08-2013, 08:06 AM
Prop looks like our 14 X 14 LC. I would start with a 13 X 16 LC 4-blade.

psychobilly
04-08-2013, 11:03 AM
Thanks EJ, PM sent

TRBenj
04-08-2013, 12:48 PM
454BB with a 1 to 1 gear. 1" Shaft and Tapered Key.
Based on the shat size, its gotta be a 1:1 direct drive, right?

13x14 or 14x14 would be the stock sized prop, Im guessing. Not sure why you would be considering a 14x16 or anywhere thereabouts, or why anyone is recommending you do so. That would have you off in left field in terms of performance.

13" vs. 14" diameter will be a pretty small difference. The more diameter you can fit without compromising hull clearance will help get a heavy boat out of the water, all things being equal... but a newer CNC prop with more blade surface area in 13" diam will trump an old hand finished 14" wheel pretty handily. See what options you have available to you. Im less familiar with what the LH choices are.

The RH 13x14 Acme was the hot ticket on my big block 19' barefoot boat in terms of overall performance. For something a bit larger and heavier, a 13x13 CNC wouldnt be out of the question either.

psychobilly
04-08-2013, 02:19 PM
Based on the shat size, its gotta be a 1:1 direct drive, right?



That's correct.

Well I have 3 wheels to try out. James has one I'm gunna try and EJ from OJ is sending me two wheels too. Soooooo, we will see how we fair. I'll take a tally book with me and log all results. Sounds like a great day at the lake. hehehe

psychobilly
04-19-2013, 12:40 PM
Well I picked up a wheel today from a buddy. Thanks buddy! :-)

It's supposed to be a 4 fluke 13 x 14 which was EJ's second choice was. I will be sure to report how it works out. If I ain't happy with that then I reckon I will get with EJ and try the fluke wheel 13 X 16 4 .

Thanks again buddy and good to meet you this morning.

j.mccreight@hotmail.com
04-19-2013, 04:43 PM
Good luck hope it works out :)

psychobilly
04-19-2013, 07:53 PM
Thanks bro.

BTW that is one heii of a tool box you have! WOW

j.mccreight@hotmail.com
04-19-2013, 08:00 PM
Thanks bro.

BTW that is one heii of a tool box you have! WOW

Thanks, after 17 yrs I figured I deserved a new one, lol, although my last one was 17 yrs old, this one should see me into retirement.

psychobilly
04-24-2013, 07:00 AM
Well some results are in. I tried out the 13 x 14 wheel and it didn't have hardly anything to offer my BB. :-) It's a really nice OJ wheel but it ain't enough.

I did find out that mine is a 14 x 14 OJ 3 fluked wheel. I put it back on and for now holding on to the 13 x 14 4 fluked wheel. I may have to try out the 13 x 16 that EJ was talking about... Kinda hard to imagine that 2" of pitch would make that big of difference but I guess it will.

Thanks again James and I'll square up with you soon. I got two more of those other things being delievered too. I sold 2 for 1900 each so may be able to come down a little on one other. :-)

j.mccreight@hotmail.com
04-24-2013, 08:27 AM
Weak hole shot but how was WOT RPM? Just remember pitch increase means decreased RPM but theoretical will travel farther with more MPH in the water.

TRBenj
04-24-2013, 11:30 AM
Adding 2" of pitch will drop WOT RPM quite a bit- somewhere between 600-800rpm. That is a HUGE change.

On a bigger boat, I would lean towards a 13x13 Acme being what you need, a 13x14 Acme would work better on a smaller/lighter boat (19' or similar). A 13x16 of any style would be way too big for a stock big block even on a small ski boat. I am very curious how you determined that the 13x14 "aint enough".

psychobilly
04-24-2013, 07:15 PM
James it was screaming at WOT. A little too hard on the big girl...

Prolly gunna try the 13 x 16 later on.

psychobilly
04-24-2013, 07:17 PM
Adding 2" of pitch will drop WOT RPM quite a bit- somewhere between 600-800rpm. That is a HUGE change.

On a bigger boat, I would lean towards a 13x13 Acme being what you need, a 13x14 Acme would work better on a smaller/lighter boat (19' or similar). A 13x16 of any style would be way too big for a stock big block even on a small ski boat. I am very curious how you determined that the 13x14 "aint enough".

The 13 x 14 was no where near enough wheel for this big boat. No way I would go down in pitch to a 13 x 13. I would prolly end up blowing up the ole motor lol.

MC240
04-24-2013, 11:19 PM
I have a 1991 240 open bow with the 454 HO with 1 to 1 velvet drive. Mine has a LH 13 x13 4 prop. it runs great. Runs exactly with the rpms. 4600 rpm=46 mph. Don't know why it wouldn't work for your boat. The SC is the same as the open bow except for the cabin.

psychobilly
04-25-2013, 06:44 AM
Hummmm weird man. I know the SC is heavier. I would not have thought that much heavier but I reckon so... Not too sure what the deal is but I know it ain't working on my boat.....


I have always said that setting a boat up with the right wheel is voo doo lol.

j.mccreight@hotmail.com
04-25-2013, 07:55 AM
Hummmm weird man. I know the SC is heavier. I would not have thought that much heavier but I reckon so... Not too sure what the deal is but I know it ain't working on my boat.....


I have always said that setting a boat up with the right wheel is voo doo lol.

The open bow is a tad heavier, per manual, I've got a 13x13 3blade wanna try that?

EJ OJPROP
04-25-2013, 08:03 AM
With the 13 X 14 that he tried being "re-pitched" I don't think it is providing a true account of how it should run. Working with him to get a true 13 X 14 to try.

j.mccreight@hotmail.com
04-25-2013, 08:07 AM
With the 13 X 14 that he tried being "re-pitched" I don't think it is providing a true account of how it should run. Working with him to get a true 13 X 14 to try.

I concur, when that prop was a 13x13 I was spinning 4800 rpm, 44 mph, afterwards to a "14" 4300 rpm, 45 mph.

EJ OJPROP
04-25-2013, 08:56 AM
Will get it fixed with a fresh 13 X 14

TRBenj
04-25-2013, 09:08 AM
The 13 x 14 was no where near enough wheel for this big boat. No way I would go down in pitch to a 13 x 13. I would prolly end up blowing up the ole motor lol.
I agree with Eric, something may be wrong with the prop. Either repitched to something shorter, or it may just be old and flexy... ie, worn out. Ive seen this a few times.

Either way, any kind of data you can provide like WOT RPM (with a verified accurate tach, preferably) and top end speed (verified with a GPS) would be very helpful in pointing out your issue. Off the cuff comments like "no where near enough wheel" are not quantifiable and not very helpful.

A bigger boat will not necessarily require a "bigger" prop. A little extra diameter to get the boat moving out of the hole may be helpful (14" being a slight improvement over 13" if you have the hull clearance), but the opposite will be true of pitch. The bigger and heavier the boat, the slower the hull- so a lower pitched prop is usually necessary to allow you to achieve max RPM in the proper range (as compared to a smaller/lighter boat).

A known good 13x14 is the perfect place to start. In my experience, a 13x14 conventional hand finished prop (OJ or Federal) will usually turn similar RPM as a 13x13 Acme. 14x14 and 13x15 hand finished props run pretty close in RPM to the 13x14 Acme.

bsloop
04-26-2013, 09:51 AM
I have two CNC finished OJ props for my 240sc, 454, 1:1. After destroying my running gear, I changed up to a 1 1/8 shaft.
I dug out my former mangled prop which was a 1" hand finished 4 blade OJ Legend. Stamped 13x14, Cup unreadable.

Eric worked with me on prop selection.
I was sacking about 2k at the time and having trouble getting out of the hole and on plane.

I have a CNC 3 blade 13x11.5 VC, no cup mark, in my spare case that I remember having better hole performance than the 13x12 (or maybe 12.5, cup unknown) OJ three blade that is on now. (Pretty sure it was my spare now that OJ lightly reworked while I toured the MC plant)

I don't sack much any more other than a 600# bow to compensate for a full load across the bench. I find my wake acceptable and more # = more $$ burned so there was no point.
My stereo load has also increased, now weighing in at approx. 1000#.

As my stereo weight has increased I have watched my top end go from 42 to 38 gps currently; turning about 4400-4600 rpm.
For reference, trailer, boat w full fuel but no weekend gear (winter storage) tip the scale at 6800#