Thread: prop slip 28%
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02-08-2010 07:49 PM
After it is all said and done. The change to the shorter drives can be made to work with modern propellers. Its the ability of the TRS drive to hold up that is the limiting factor.
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02-09-2010 02:11 AMHere u go............
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02-09-2010 11:21 AM
Biggus and Daredevil TRS mesurments are over 1 inch different. That seems like a lot especially when on some boats 1/4 makes a big difference. Since my drive plate is high if I went to a standard Konrad my X would be 4" and 2" for a shorty Konrad, would that be too small?
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02-09-2010 11:45 AMCan u post a pic of the back of your boat ???
I would still go with SSM #4...don't worry about parts, u will not break any...also they are still out there and not that hard to get ,like some people think..just not from merc !!
I don't want to get in to a pi$$ing match again with Biggus about the konrads, but for the price of 2 Konrads ( even used ) u can buy 4-5 #4's .
The gimbal change is easy aswell, since the gimbal on a SSM is bigger then the TRS, so no glass work..just drill and cut !!!!
I also have up to 3 " spacers for #4/5's avlbl. and i think u be ready to roll.
but thats just me.....
PS, i got the mess. from the merc book so i don't know which one is off .....maybe they changed it at one point ?!
all the ones i ever messured matched the book !
PPS, then again , i think you are waisting your $$ ...everything over 90 MPH in a 30' Velocity is out of control and u can get hurt.....just ask VV on here,,he will tell u.
Nice boat, i am not slandering the make/model.....but its just not build to go that fast !Last edited by DAREDEVIL; 02-09-2010 at 11:50 AM.
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02-09-2010 03:42 PM
A 30' Velocity is one of the first big V-bottoms to break the 100 mph mark.
I'd go with the dependable Konrads.
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02-09-2010 10:57 PM
My suggestion would be Keep your eye on the Fun Meter.
The Konrads will bolt up to what you have. Everything else requires a complete re rig. Install one of your drives and measure as Chris suggested. Find out if spacers are available for Konrads. I don't know but, expect they are available.
FYI the 18" X you mentioned is the measurement against the transom. That number is effected by the transom angle and can not be used to calculate directly as you have. The actual vertical height of a 18" X is less then 18".
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02-09-2010 11:01 PM
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02-09-2010 11:39 PM
Over simplified a bit. The cut out is different and your winging the height. Aren't the tail stocks different lengths? He didn't say whether he has rear mounts.....
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02-10-2010 08:25 AM
Swapping to a SSMIII/IV or V from a TRS is a complete re-rig. The SSM trans tailstock is about 4" shorter than the TRS. The motors will need to be moved back, X-Dimention raised. Most likely the exhaust will need to be modified also. The SSM transom cut out is also quite different than the TRS. In the end it's a LOT of work to convert to a drive package that has been long discontinued. Parts for the SSM series, even wet sump VI parts, are very getting scarce.
The Konrad system is a direct bolt-on. No modifications. Spacers are available for .5-3" in 1/2" increments.
Kurt
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02-10-2010 08:37 AM
Here's a shot of a BW fitted with the TRS tailstock. The TRS tail is also a smaller diameter (where it slips into the gimbal) over the SSM tail. The other trans is fitted with the SSM tail, notice the differences in length.
...sorry to derail this prop slip thread, just wanted to clarify the info.
Kurt
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02-10-2010 10:58 AMThe problem with the SSM drives, beyond dwindling parts availability, is finding someone that knows how to work on them. It's an art form. And not everyone has the tools. You can get a TRS fixed anywhere.
Next you have prop selection. Small-shaft props are getting more scarce. And the difference in price- a $400 TRS prop vs a $2000 #3 prop.
As far as the Velocity goes, if you know how to drive it you can run 100 mph all day in it. But no vee of that length is all that safe at 100. They don't really get all that twitchy until over 110 or so. I had mine to 113. Too fast. I think I was out of skeg.
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02-10-2010 11:23 AM
Sorry DD, but I've got a thing for wrong information. If one was to convert to a SSM package, the motor must be moved rearward as the SSM tailshaft is shorter. If one was to swap out the tailshafts and leave the motors in the existing TRS location, the drive input shaft would have no engagement into the trans. The SSM input shaft is several inches shorter than the TRS.
No pissing match, just factual information.
Kurt
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02-10-2010 11:43 AM
The thickness of the inner plate has nothing to do with it.
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02-10-2010 12:13 PM
I am not going to argue with you. If you did it great.
Getting it to work and doing it RIGHT are two different things to me.
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02-10-2010 12:30 PM
Great deal of info, all good. I have just come across a set of JT20 turbines 2100hp each and a set of ASD10's that I am thinking of putting in the 30' Velocity. The set up should make for a interested ride.
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