IMCO SCX failures ??
09-29-2009, 11:49 PM
#11
Chris
Gold MemberThread Starter
[QUOTE=DonRoc;2963295]
The SC upper is a two piece affair. When used with a -3 SC lower, a special -1 mid-section must be used on the SC upper. Since the SCX is a one piece casting, there is no such "mid-section".
The SCX upper was originally intended to be used with the SCX lower, which at this time only comes in a -2 configuration. IF you want it lower than that, you have to use the SCX spacers which come in lengths up to +3.
Because of the enlarged gears in the SCX lower, it is proving to not be very efficient except when used as a surfacing drive.
IMCO wisely decided to make the SCX upper compatible with their existing SC lower sections. The only thing you need, is to put a conversion down shaft into the lower. They make these conversion shafts in standard thru +3 lengths.
So.. not only is there no -1 mid body in the SCX to accomidate the clearances needed for a prop when using the -3 lower, there is also no -1 conversion shaft made.
Hope this helps,
Chris
The SCX upper was originally intended to be used with the SCX lower, which at this time only comes in a -2 configuration. IF you want it lower than that, you have to use the SCX spacers which come in lengths up to +3.
Because of the enlarged gears in the SCX lower, it is proving to not be very efficient except when used as a surfacing drive.
IMCO wisely decided to make the SCX upper compatible with their existing SC lower sections. The only thing you need, is to put a conversion down shaft into the lower. They make these conversion shafts in standard thru +3 lengths.
So.. not only is there no -1 mid body in the SCX to accomidate the clearances needed for a prop when using the -3 lower, there is also no -1 conversion shaft made.
Hope this helps,
Chris
09-30-2009, 06:55 PM
#12
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I hope they make a case and componets to accommodate the -3 or make a -3 SCX complete. In the near future. I can not go deeper than i am now, in fact would love to go hgher.
Thanks,
Don
Glen Harbor Marina
Thanks,
Don
Glen Harbor Marina
10-01-2009, 12:18 AM
#13
Chris
Gold MemberThread Starter
Don,
You should probably call IMCO in California and ask them about a shorter SCX... but my understanding is that they are not persuing that at this time.
From talking to them today...They are looking into making the SCX lower more hydrodynamic by using somewhat smaller gears in the lower and making the lower faster. For now we will just have to settle with the SC lower if we want speed, or the SCX lower if we want reliability.
IMCO claims that they have yet to see a broken set of SCX gears. Apparently there were some shifting issues with the first release units due to breaking shift cams, but that has been fixed with a new billett piece.
On your boat.. there is always the possibility of raising the motor some. I have heard that you can raise it an inch without re-cutting the transom.
Hope this helps,
Chris
You should probably call IMCO in California and ask them about a shorter SCX... but my understanding is that they are not persuing that at this time.
From talking to them today...They are looking into making the SCX lower more hydrodynamic by using somewhat smaller gears in the lower and making the lower faster. For now we will just have to settle with the SC lower if we want speed, or the SCX lower if we want reliability.
IMCO claims that they have yet to see a broken set of SCX gears. Apparently there were some shifting issues with the first release units due to breaking shift cams, but that has been fixed with a new billett piece.
On your boat.. there is always the possibility of raising the motor some. I have heard that you can raise it an inch without re-cutting the transom.
Hope this helps,
Chris
10-01-2009, 01:19 AM
#14
Registered
Don cant raise his drive anymore. He just reglassed the hole in the transom and raised his ITS box to 1/4" from the swim platform and raised the engine to match. He already has a -3" lower.
I forget how much you raised it Don, must of been at least 2.5-3" right?
I forget how much you raised it Don, must of been at least 2.5-3" right?
10-01-2009, 01:29 AM
#15
Chris
Gold MemberThread Starter
Back to the question at hand... anyone have comments on the SCX drive?
Chris
