Vinny P

Kap,

I totally agree with you about SC lowers being the same as an XR. However, in my case I have 3 good reasons for choosing to stay with the SC lower and not going with the SCX. 1- Ever since I learned how to set up drives myself ( thanks Dick ) and use treated gears, I can get a couple of seasons out of a set of lower XR gears. At my power level, lowers are living. 2- An SCX lower would almost certainly slow me down somewhat. 3- For those 2 reasons, I couldnt justify the cost.

I agree with you, guys running more power than me or a heavier boat, would most likely need to run an SCX lower to avoid busting up SC's..As you said, it seems nobody with real world experience with big power has chimmed in.

SkiDoc

iTrader: (4)

Vinny,
My set up has a 1"spacer. Is there anyway the SCX can get the height where it was.

Mr Gadgets

Imco has not made the couplers for the spacers for the SCX/SC combination yet.. Just a matter of time, I suspect.

kap328

Comment:

Mr. Gadgets well according to Vinny P he has a coupler in hand and will be mating it to that combination ie...SCX upper to a SC lower.

I also have a fellow OSO friend--26 Redline---who is going to mate that combination to his engine which produces about 1000HP+/-. He will definitely let us know how it survives real quick.

Previously, I was running the Max Machine Worx 900 drive and it was reasonably good for the HP I was putting through it with a 6000lb boat.

I am currently, running a X-Power Drive with a 5 blade cleaver in a single engine boat. I was very interested in what the outcome of the latest version of SCX would yield---for reference only as this would have been my other option.

Hope! Vinny P, has great success with that combination as a lot of people out west are awaiting the results with optimism.

KAP

Vinny P

KAP,

I think MrGadgets ment that Imco has not made a coupler to adapt an SCX upper to SC lower, while using a spacer. Ofcourse,, depending on the width of the spacer, the coupler would have to be longer.

kap328

Well most boats are currently running Bravo set-ups and thus changes in the lower would not be adviseable. Why! you want to keep the control group the same so you can observe any speed changes as a result of the bigger gears. Thus the coupler would be the same size as the one your running right now.

I believe the latest generation of SCX lowers have a more streamline lower versus the old lower which scrubbed speed due to it's bulbous shape to accomodate the bigger gear. If anything running a SCX lower might require you to inch up the lower to a higher overall X-Dimension to bring the gear case further out of the water but then you start losing control and the boat will want to skate/crab.

It is becoming readily apparent that no one has done enough R&D on this set-up YET!

Hopefully, someone will chime in with some results.

KAP

Uncle Dave

Kap- from what I hear you are right about the new SCX lower, Ill get a good look pretty soon. CB- probably has the scoop on it as well being a recent convert.

Quents new 2750 has 1000 HP and (from what I know) will be running the SCX drive.

Im eager to watch this one go together.

http://www.offshoreonly.com/forums/l...er-2750-a.html


UD

Back4More

As i mentioned a while back in one thread....make sure the hub in the props don't have any free play. Any kind of slack in there will hammer on the lower gear teeth.

Mr Gadgets

Kap.. You are wrong!! When you add a spacer between the lower and upper, as was being discussed, the coupler needs to be longer to mate the upper and lower vertical shafts together. Simple physics.. and they have NOT had any machined yet at Imco as far as I know. I discussed this topic with them several weeks ago..
That is what I was talking about..

And Yes the SCX lower is fatter than the SC or the stock Merc.. But it isnt necessarily slower in all applications, once you change the setup to work with it. I have a friend with two of them on his boat.. a full season over 150hrs and no problems. He has run as fast as he did with the XR's.. Not every time out, but he has run as fast. His X is -2" from what it was with the XR's and with the right props.. he hopes to go faster. He is not running 1Khp, but he used to go through 2-3 XR's a season..

Where is this new streamline SCX lower? I think what you are refering to is the SC lower on an SCX upper.

Dick

2112

What power and boat or did you already say? (whoops, Howard and 975) Is it blown?

To be clear, you stared with a Max 900 in this same boat?

Can you give us your impressions of the X-power drive? What other components did you swap out with it?

Speed? Is it faster? Handling OK? Do you have a spacer between the upper and lower units?

Thanks

.