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scx 4
Anybody have any experience with these drives? Are they much better than the XR? How much horsepower can they hold? I am getting tired of rebuilding Bravos every 75 to 100 hours. How long before a rebuild on these drives? Will they bolt up to xr helmet?
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Sorry to hear your having the bravo blues. There are A LOT of us in the same "boat".
SCX-4 might be a good option to increase strength and reliability. They have NOT been proven to increase speed on a V bottom. They have done a little better on cats but again not much solid data. SCX-4 is NOT a turn key drive. You will eventually need/and or want SCX-4 drives Helmets (required) Stainless Steel HD Gimbal Rings Reservoir Extension boxes (neutral or -3 depending) WCM blueprinted lowers $5500 props (each) Spacers to space down if needed Water pickups might change Tie Bar Prop testing Dial in time It adds up FAST Your boat will still be rigged with old worn out Transom assembly's, hydraulic steering, and trim rams Arneson ASD7M Bravo Conversions are a better bang for the buck, stronger drive, that's actually proven to increase speed Yes the kit cost more up front but you GET More, Plus you can sell your old parts Arneson's Included Drives Transmissions Extension Boxes Drop Boxes Bellhousings New Trim Rams New Hydraulic Steering Helm Unit Etc. Pretty much everything you need to install Everything from the engines back is NEW, tight and safe! Multiple NEW Skaters, Hustlers, and others are being rigged with Arneson's new as we speak. Can't argue with Skater on speed and handling Good luck on your search |
Originally Posted by offshorexcursion
(Post 4039977)
Sorry to hear your having the bravo blues. There are A LOT of us in the same "boat".
SCX-4 might be a good option to increase strength and reliability. They have NOT been proven to increase speed on a V bottom. They have done a little better on cats but again not much solid data. I picked up 1.5 MPH. They "should" be stronger SCX-4 is NOT a turn key drive. Neither is the Arneson You will eventually need/and or want SCX-4 drives Helmets (required) Stainless Steel HD Gimbal Rings SS not required, HD for sureyou'll have to pull the engines to install them Reservoir Extension boxes (neutral or -3 depending) not required WCM blueprinted lowers not required but neededthe stock lower is a fat twisted pig. If you don't do it you'll probably loose speed but it should be stronger $5500 props (each) same with Arneson Spacers to space down if needed Won't be able to do this on Arneson which could kill the whole thing. Find that HTM thread Water pickups might change Have to use through hulls on either set up Tie Bar doesn't come with the Arneson either Prop testing either way Dial in time either way It adds up FAST either way Your boat will still be rigged with old worn out Transom assembly's, hydraulic steering, and trim rams are they worn out? Arneson ASD7M Bravo Conversions are a better bang for the buck, stronger drive, that's actually proven to increase speed In this application???? Yes the kit cost more up front but you GET More, Plus you can sell your old parts Kit is more AND labor is way moreYou can still sell some old stuff Arneson's Included Drives Transmissions Extension Boxes Drop Boxes Bellhousings New Trim Rams New Hydraulic Steering Helm Unit Etc. Pretty much everything you need to install Everything from the engines back is NEW, tight and safe! You cannot run the through drive exhaust so the Y pipe goes and tails will have to be redone. 4" pipe isn't cheap Engines have to come out to install. If you have a notched transom you might need glass workMultiple NEW Skaters, Hustlers, and others are being rigged with Arneson's new as we speak. Can't argue with Skater on speed and handling Good luck on your search Bang for buck is acceptable if the drive holds up which I think it will Don't get me wrong, Arneson's are awesome. Find someone with your boat and Arnesons to see what they think and how to set it up, keeping in mind that a Bravo conversion is different than a "from scratch" set up. |
Originally Posted by 1 MAIDEN AMERICA
(Post 4040108)
Bang for buck is acceptable if the drive holds up which I think it will Don't get me wrong, Arneson's are awesome. Find someone with your boat and Arnesons to see what they think and how to set it up, keeping in mind that a Bravo conversion is different than a "from scratch" set up. |
Originally Posted by Rik
(Post 4040117)
No it's not. The exact same kit from Arneson is supplied for a Conversion or a new boat setup. Not one bit of difference in items supplied nor pricing. We have quite a few 38' Cigarette's with the Arnesons and have a customer converting on a newer TS model at the moment.
I thought OEM Arnesons have the tranny's in the boat and the conversions in the extention box. May be an old school set up? And plenty of Cigs have Arneson's to get info on compared to SCX-4's |
Sidetracking. Any 2002 semi-staggered 38' Lightnings with the Arneson conversions?
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I had a customer with a side by side on a Fountain 38' no staggers. Come to think about it, how did you stagger a Fountain 38' pleasure boat? Does it have a different cockpit?
The Bravo Conversion Kit and the #7M Kit are the 100% exact same thing and the customer, due to different configurations, has the option of close coupled which puts the transmission extending into the standoff box or a drive line (for stagger or catamaran applications) that has the transmission forward. In either case, the transmission is mounted to the engine and follows the engine's location. Meaning it's not mounted into the standoff box itself. |
RIK, 38 fountains did a semi staggard around 2002 then went full in 07?
Heck 07 and up 35's were full but came in at 9800lbs and they had a Small cockpit. Either way, why are the props so expensive on both? I thought with the Arneson conversion you could run bravo style props? |
The propellers are made by Mercury or Hering and we use the Speedmaster style as the Bravo's are not the best for the application. On the smaller boats the Bravo style propeller works fine but not for a 700+ hp 9-10K lb boat.
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Another cool factor for Arneson is that he hangs out here
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Only a few inches more than a Bravo on a box
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So back to imco scx 4. Anybody running them? Im Not running big power. Just need a drive that will last.
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1 Attachment(s)
[ATTACH=CONFIG]514042[/ATTACH]They are great drives,I have a set.
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Originally Posted by KWright
(Post 4040292)
[ATTACH=CONFIG]514042[/ATTACH]They are great drives,I have a set.
KW was talking to a friend this afternoon about your project, how did it turn out for you in terms of overall performance? |
1 Attachment(s)
[ATTACH=CONFIG]514043[/ATTACH]Just finishing my motors as we speak, will have to wait till spring to test! Don't know why my phone turns pics sideways? Anyways sorry for the high jack.
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Originally Posted by KWright
(Post 4040308)
[ATTACH=CONFIG]514043[/ATTACH]Just finishing my motors as we speak, will have to wait till spring to test! Don't know why my phone turns pics sideways? Anyways sorry for the high jack.
Was wondering what you saw as a difference in the drive change, perf from the Bravo to the SCX4? Knew you planed to do some motor upgrades in time, was talking with KellyO today about your project and just wondered what gains you saw this season with the drives? |
Op
Personally would run a standard SCX for the strength gain and save the extra money over the -4 for something else. |
[QUOTE=RaggedEdge;4040341]Was wondering what you saw as a difference in the drive change, perf from the Bravo to the SCX4?
Knew you planed to do some motor upgrades in time, was talking with KellyO today about your project and just wondered what gains you saw this season with the drives?[/QUOTE Had P5X 29 pitch 88mph with bravo's, 94mph with scx-4 with a 17-30-18 Hering. also during the upgrade we installed a short windshield, and Wilson blueprinted my lowers on the scx. |
Whats the difference on the scx 4 from scx? How much hp can they hold?
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Kw I see you have a non I.t.s. boat. Does that matter? Will I gain any speed? I have a 525 cig running 91-93 mph
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The SCX-4 is 4 inches shorter. My boat has the Standard HP transoms. My speed gains came mostly from raising the propshaft height 4 inches.
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I put standard SCXs on my T/S gun w Stellings boxes. Didn't notice any speed gain, maybe lost a couple. Not sure the x4 would get on plane. I had a hard time getting on with the 1 inch spacer out of my XRs.
Mine are at least a couple inches higher with the Stellings then standard or ITS to begin with. DID notice I made a WHOLE summer WO drive issues!!!!! about 750 HP WAHOOOOOO!! Don't have the wife in my ear "That FU@KIN boat!!! " worth every $ ;) |
Can they take a bigger diameter prop than a bravo?
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Originally Posted by Quinlan
(Post 4040505)
I put standard SCXs on my T/S gun w Stellings boxes. Didn't notice any speed gain, maybe lost a couple. Not sure the x4 would get on plane. I had a hard time getting on with the 1 inch spacer out of my XRs.
Mine are at least a couple inches higher with the Stellings then standard or ITS to begin with. DID notice I made a WHOLE summer WO drive issues!!!!! about 750 HP WAHOOOOOO!! Don't have the wife in my ear "That FU@KIN boat!!! " worth every $ ;) |
Both the SCX and SCX-4 can use a number 6 style prop although its more common for the -4 to use a #6 and the standard SCX to use a bravo style. So yes they can take a bigger diameter prop.
Nice thing about the standard SCX is you have the strength to now prop your boat more aggressively with a 5 blade maximus or a bravo style herring. OP There are boats like yours with success running standard SCX and Arneson. You will be the first to dial in a pair of -4 drives.... |
Im running a 6 blade herring now. the boat has to handle much better with a larger diameter prob I would assume...
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My motor dyno'd 1600. Scx 4 on 27 Daytona. Beat the piss out of it and love it. You always go scx upper and sc
lower, you can run bravo props that way. |
Originally Posted by Quinlan
(Post 4040505)
I put standard SCXs on my T/S gun w Stellings boxes. Didn't notice any speed gain, maybe lost a couple. Not sure the x4 would get on plane. I had a hard time getting on with the 1 inch spacer out of my XRs.
Mine are at least a couple inches higher with the Stellings then standard or ITS to begin with. DID notice I made a WHOLE summer WO drive issues!!!!! about 750 HP WAHOOOOOO!! Don't have the wife in my ear "That FU@KIN boat!!! " worth every $ ;) |
I heard u can get #6 prop shafts with them also?
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Yes you can get #6 prop shafts on the SCX.
Tell us more about your boat please. Year, Current Drive height and/or X-Dimension, Current props Do you have any other goals besides gaining strength over the Bravos? Is budget a concern? Or best Bang for the buck? How long do you plan on keeping the boat? Any plans to upgrade power? |
I want best bang for the bucj with the option of adding whipples to my 525s.
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Im undecided about upgrading drives and power or moving to a number 6 boat.
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Number 6 boat Period!
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#6 OR Arneson boat and you will never look back!
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Anyone running scx4 single engine V bottom,working on putting one together looking for input
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Originally Posted by pro27
(Post 4041209)
Anyone running scx4 single engine V bottom,working on putting one together looking for input
I know of a single merc #5 30' V and a single merc #6 30' V both had to lower the drive back down after raising it up and run a 3 blade prop. They have 10's of thousands of dollars into dial in and testing. Both boats are amazing but no where near where they thought/hoped/ or should have been Peter's new 29 Outerlimits has a single 725 Ilmor with a Indy surface drive running good but about 20mph shy of what it should. Peter seems to be one of the more knowledgeable members on OSO and if anyone can figure it out he can. Not to discourage you but single V's with surface piercing drives are not the easiest to make run correct but when they do look out! There are some single Arneson V's that have run really great with surface drive props and some also run great with bravo style props. Good luck and keep us updated on your build! |
Thanks for the info,but Peters boat is a stepped bottom mine is a straight V hull.The weather here has put a hold on my testing,will see what happens.Thanks again.
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Originally Posted by fastoys
(Post 4040420)
Kw I see you have a non I.t.s. boat. Does that matter? Will I gain any speed? I have a 525 cig running 91-93 mph
what I want to know is what have you done to get a 525 38 TS to run 91-93 mph ? |
Originally Posted by pro27
(Post 4041743)
Thanks for the info,but Peters boat is a stepped bottom mine is a straight V hull.The weather here has put a hold on my testing,will see what happens.Thanks again.
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Originally Posted by JaayTeee
(Post 4041777)
I'm unfortunately well aware of the XR upper gear sets shortcomings ( between my boat and my buddy's 38TS we have a pile of them)
what I want to know is what have you done to get a 525 38 TS to run 91-93 mph ? Me Too! |
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