one of the quotes say max input rating of 1160 ft-lbs, do you know where they got that info? is that what a 600 SCi makes? Wonder what the max is for a Bravo X Diesel drive. I got about 700 hours on my drives and no issues but I have been increasing the power of the Yanmars a bit at a time, I wonder what my limit is?

The quote references the published maximum torque rating for a #6 drive which is 1160ft-lbs. You can find the torque ratings on the Mercury Racing website.

GF?

That's impressive, you didn't put bores magic oyel in there did you? Jk

;)

As a follow up to our experience with the Drive Guardian system, we just had our drive opened up and inspected by Jason Saris at Saris Racing Engines/Performance Marine and the internals of the drive show nothing but normal wear. Can't say that for our drive before we began running the Drive Guardian. Wouldn't race without it now.

Drive Guardian- "Throttle it like you stole it!"
We wouldnt race without them either

The quality and build tolerances of these units are unreal. Well beyond normal marine spec.
The prototypes where jewels. The production ones are state of art.
Price does reflect the quality.

Any recent info on the DG? If I end up keeping my boat I'm thinking of installing a DG over the winter.

Have they figured a way to produce them for less money? I know the product is somewhat in its infancy but now is the time to provide cost savings if you plan to sell them to the masses.

I think the pricing is fair. Whats a gearset cost these days for an XR? 1 little gearset can be almost as much as a drive guardian assembly. Id put the two products in my hands and see which one feels more valuable lol.

Sad when car and truck ring and pinions are a few hundo.

There is no reason for the price to move. Sales are good, the real world results are fantastic, worth every penny!

MDC will be at the Miami boat show and will have a couple DriveGuardians in the CP Performance booth. Make sure you stop by and see them for yourself!

Mike

I'm very interested in these. Freshening my 525's and adding whipples this winter. I run in nothing but the LOTO slop with my 36 Spectre. What's current lead time if I ordered a pair?

They would be perfect for that application

MDC can typically build, calibrate and ship a pair in 3-5 business days and they should work well for your application. 2nd Amendment won the 2015 SBI and OPA world championships in a 36' Spectre with DriveGuardians. They also won the 2015 LOTO Shootout for the fastest Bravo boat. You can find more info at www.MarineDesignCorp.com

GF?

Thank you!! I'll be in touch soon. My boat is a previous NXT boat (no notch transom) unlike 2nd amendment and most others, so with only the ITS extension boxes the X-dimension is crazy high. There will be a lot of uncontrollable prop spin at speed. I'll definitely put the DG's to good use.

The props on that death sled will be out of the water so much that you can use it to hunt Gators in the Louisiana Backwaters @ Tickfaw like a Fan Boat.

YESSSS!!!! HAHAHA Gators beware!!!

I realize the DG is not designed to replace the need for a larger beefier drive, but will it help bravos live behind larger hp?? I have a 28 daytona eliminator with 650 a side but would like to add blowers and make around 800. Would these help the drives live with this kind of power?? It sure has my attention!!!:)

Live? Unlikely, unless you baby the hell out of it. Extend? Yes.

No

Will only help in the rough water

It`s the loading, unloading and torque spikes that will destroy a drive.That`s what exactly what the Drive Guardian is designed to prevent. My motors make 850tq and The DR is getting set up to engage at 900tq. That means my drive will never see any more than 900ft of tq.
In my old drag race days , generally, you didn`t break a rear end going down the track (even if overpowered ) you broke it in the burnout box especially if it started to hop.

A boat on a inland lake that only sees the occasional cruiser wake seems those guy keep their drives together a long time. Same boat at LOTO or the Great Lakes may only see a season or two. Drive Guardian makes your drive think it`s river boating :drink:

The other advantage is also saving and decreasing the tq to the transmission (in my case) and the really to the entire drive train including the crank.


So pretty!


http://33outlaw.zenfolio.com/img/s5/...45206276-4.jpg



http://33outlaw.zenfolio.com/img/s/v-2/p510144629-4.jpg

I like this product question does the rotating mass of the drive Guardian suck up any HP.

i know the saris boat is staggered bravo's
mercruiser has a different part # for the coupler used for jack shaft/ drive line models,

will the bravo dg work on the drive line housing or is it special?

the flywheel i want to use bolt pattern for the coupler is 12 5/8 center with 6 bolts

I like the idea of these and am going to be running them this year. I will report back as I test them:boat:

Mike needs to come up with a prop hub--- then for sure the drive and tranny aren't going to see any extra torque....

Rotating mass usually stores energy more than anything. IE: more resistant to rpm spikes up or down. Think re-entry or going airborn. If that doesn't make sense, think throttle response becoming flatter.

Zero.

Thanks definitely the way way to go.

Unless something changed the SSM version uses a lighter flex plate instead of flywheel.
Yo also end up with a Flywheel and coupler to sell ..couple of buck to offset the cost..

I will no doubt install a set for my WEAK AZZ Bravos, but not untill I have to pull the engines for freshing the lower ends or emergency repairs. Getting lazy the older I get. I believe they will be just the ticket for my needs!

DriveGuardian will work on both driveline and close coupled Bravo applications without any modifications to the engine or boat. They are a straight bolt on replacement for the stock rubber coupler.

GF?

Correct, the SSM version replaces the flywheel and comes with a HD damper plate. The entire assembly is actually lighter than the stock setup. The NXT version is also lighter and replaces the flywheel but retains the OEM damper.

GF?

Some Updated pics.


Bravo
http://33outlaw.zenfolio.com/img/s10...24641302-4.jpg

SSM:
http://33outlaw.zenfolio.com/img/s9/...91817493-4.jpg

NXT:

http://33outlaw.zenfolio.com/img/s7/...48501842-4.jpg


Not pictured V10/Indy version

How do you charge the torque they are set to? If I buy a set can I change the the setting if i change the output of my engine?

Not a problem, you can send them back to Marine Design Corporation to be re-calibrated.

GF?

I don't have big power, or a heavy hull, but love to run the chop here in the Chesapeake Bay. Below are three videos that show the kind of water that has been a drive killer for me over the years. Not much jumping, just waves close together with troughs deep enough to air out the prop for some slip and grab - without the hull lifting - so there is nothing to coordinate your throttle hand with. Went thru 5 TRS's in first 5 summers at 40-60 hours each, and 80 out of one - 4 of them with the same drive plate (stock merc - same one spec'd for a 350ci cabin cruiser setup) Rebuilt one drive myself, and bartered and traded for the others, so it didn't cost me much... till I bought a Konrad. That finally went last year after 430 hours and 6 or so years, with no change in power level - but I think it should have gone longer with only 540ci, under 600hp, huber trans, in a 4,300 lb boat. I've always thought the DG was a brilliant idea, and since I am adding a little more power, I was thinking it could make all the difference for me - So could you PM me a price for my setup please? Thanks!!

Speeds are not WOT - just 4,000-4,500 cruise.

http://www.youtube.com/watch?v=HITXdgwZxxg

http://www.youtube.com/watch?v=-OdYQeBCVu8

http://www.youtube.com/watch?v=6K8xn4AHYJM

(BTW, interesting note - my last boat couldn't run the bay like this, and the '89 Bravo I put on it on it lasted over 400 hours for me with just under 500hp, and then went on my buddies 22 Donzi with 525hp, and has still not been rebuilt to this day - ever - because both boats were not big enough to get on top of the that kind of water and run level)

Sorry, I tried to send you a message but your inbox is full.

GF?

Where on where does the time go? Sorry about that - subscription probably ran out - if you get this, try me again. Block is done, and rotating assembly is a week out - engine will now be 572ci and 700hp call it maybe 700ft lbs ish...... I'm out of money, lol, but give me a number to argue with myself over please :argue: - I also sent an email to your website today - thanks, Eddy

Mike gave me a number that lost me the arguement with myself, lol... Guardian ordered. With the type of water we get here constantly on the Chesapeake Bay - 2-3ft chop closely spaced - there is simply no way to keep the prop buried in my boat while running across them, even with my fairly deep X- dimension. I'll bet I could've made my TRS's live with a guardian, all 5 of them, lol. Can't wait.

Pics below are the fun of widely spaced 1-2's, not drive killing water (and with the Konrad), where you can run trim high and let her fly WITHOUT airing the prop - pics are at low 70's and most without pulling throttle... Thus her name "Hangtime". So glad I didn't raise my X-dimension, as it would've killed a lot of this fun. Although the hull re-entering the water is also a drive stressor, it's nothing like the shock of the slip and grab. Running the 2-3's, trimmed level, without jumping, yet prop slipping and grabbing, is what has been murder on my drives.

Just checking as I am following along here, is Got Freedom - Mike C ?