#5 drives on side by side mistress?
 

Anyone ever rig SSM5 drives on a side by side Mistress without boxes? No notch in transom of course.

I have no info on this. But you are taking off TRS? Just asking to help with your question. Thanks

SSM 3A is what is on there now, about 5" below bottom of hull

I have a Clean set of fresh water #5's if you are looking..boxes also available.

Would you sell just one drive?

EightSecv6 . I think you would be hard pressed to see any advantage of going to a 5 drive without a notch or a box . It is a different drive than the 3 or 3A . you could probably see a big improvement raising your 3A up 1.5 to 2.5 inches . The 5 drive It is a surfacing piercing style drive and does not like sitting much below the bottom of the hull . So you would be better off to stay with your 3A's and play with X dimension than put 5's on without a box or notch. Just my 2 cents coming from the guy that put a notch in an 85 Cig Flat Deck lol ( too cheap to pay for boxes and related parts ).
RG.

Just looking for different options at this point have broken several SSM3 and just broke an SSM3a, cant really raise the X any higher, hatches are already on the verge of too big!

Wow , how do you break a 3A . Do you air the boat out a lot or just bad luck . I believe a big shaft 3A should be near as strong as 5 drive . The 5 is shorter and therefore prone to be stronger but your boat is not so big and heavy as to beat up 3A's . Is there possibly a different issue . I ran 3's on my 43 Scarab and that beast weight 15k and granted I didn't beat up on them and planned her up very gingerly but never had a problem . Just thinking out loud .
Cheers RG.

I had almost 900HP on the 3A's with a super high x Dimension and 31" wheels by 17.75. Never had a drive problem. That sucks that you had a problem with yours, might have been just its time or needed to be checked out. Mine was a 1993

All the 3A are big shaft, trust me I never thought it would be a problem. Lasted about 50hrs behind 950hp, 17x30 3 blades @ 5" below the bottom. I run it hard, never really "airs out" its a Mistress LOL! I have Broken 1 upper SSM3 and 3 lower gearsets on SSM3 and now the lower gearset on my SSM3a. Always the RH drive, never have broken a LH anything!!!!!

With 700s in it with the SSM3 and no blowers, 75mph boat and it never hurt a drive, EVER

Did you quote your own post ?? or is there a glitch in the OSO upgrade ^^^^^^ Your stating what the boat use to have in it ?

I agree with the weirdness of blowing a 3A. Beefy mo'fo's. I'd "set it and forget it" on my gun with 3a's, never worried about airing out really. Things ran like a champ.

From my understanding the SSM3's are closer to sizing to the TRS innards and the SSM4 is a shortened version of the SSM3, where the 3A is closer to internal sizing to the SSM6 and a SSM5 is a shortened version (lower) of the SSM3A. 3A's are well known for taking up to 1k HP.

Speaking of airing it out with 3A's (love being able to post pics again!!) :D :D


https://cimg5.ibsrv.net/gimg/www.off...02a80ec8de.jpg

Yes, thats what I used to have in the boat.

Hence the reason I thought my problems were over LOL. If i could get the URL thing to work Id post a pic, lower gear set is destroyed! I "hear" of the ability to handle 1000hp, not the case for me. I can break a regular SSM3 in a weekend...
I have a line on a pair of 5s with a 3" spacer in them, I was just wondering if anyone has ever tried them on a boat like mine and if it would plane off or not, not really looking to go faster!

OUCH!

You sure it's not a balance issue or alignment issue. Breaking same drive over and over again? Kind'a weird.

Just do what I did put a notch in the hull . No biggy $1,000 bucks in materials and 5000 hours personal labor LOL .
And you get to work the fiberglass upside that's the real treat .
RG.

Hmmmmm was just talking to a buddy yesterday about how a gun would react to bolting a 4-5 on no box down the road, then space to height needed... Someone has had to do this on either boat to see....

I would leave the 3a s on the boat, I think you will be happier how it performs. 3a s and 5 s are basically the same strength and moving the prop closer to the surface will probably result in more breakage.

https://cimg5.ibsrv.net/gimg/www.off...609a4570f0.jpg
I raised my engines, and drives on my Top Gun with 3A's, they were in the same location that 5s would be. I was able to Plane with 4 Blades and Big Diameter. Little tab. Of course then you run into hatch issues if you are running big blowers, intercoolers, etc

If you don`t want them coming out of the water every 5 seconds and have to constantly throttle then 2" inches below (or more) bottom is my recommendation. .. I actually went faster with that set up vs. even with bottom.

My RH drive is also the red headed step child as you know they break 10x as often due to the weaker design

I Agree totally with the above, Mine were Either 1.75 or 2.25 below. It was set up at TNT in Miami. Anything less and I believe you would be out of the water and probably be difficult to plane in certain conditions. Hard to tell from my picture, but that was the best one that I have right now.

Looks like You are spinning 'IN" and have a notch. I measured this AM and I think the 5 will be about 1-2" below bottom with a 3" spacer

Yes spinning in, I sold this boat 4 years ago, I run the Playboy Twin Step Now. I was posting for a reference for setup. As every boat I have ever had, none 2 are ever the same, you might have to tweek the setup to dial it in. Good luck with your project.

Let me ask a novice drive height question, are you measuring from the slant of the V down or from the horizontal line of the notch down to the center line of the prop shaft? Thanks!!

Jim you are measuring from the slant of the V as you put it to the center line of the prop shaft .
RG.