Yes ��

Very interested in this!

The ultimate test would be get a twin engine bravo boat and install it on one engine but not the other. See how much longer the drive with it lasts.

No doubt, but the problem is finding someone to volunteer to let a Bravo blow up - It would be painful to let the one die, while it's brother is sitting there protected...lol ;)

We thought about doing that, really did. Just couldn't bring ourselves to do it. We do have a set of gears from a year with and a set from a year without to compare side-by-side, the results are outstanding. The pictures are posted on OSO.

I know what you mean about the conditions on the bay. Not like you are throttling over big swells. I went through 2 bravos in a short time on my Superboat. I was running a 5 blade prop too which was probably making things worse. Good luck with the DG.

Im in the middle of an overhaul on our 382 and one of the biggest issues I had was blowing through Bravos. Mercury Racing 600s direct coupled to Stelling drive shafts with no coupler left nothing to take the shock, other than the poor Bravo gears. I think we have blown 6 or 8 drives in about 300 hours. Im done with Bravos and my plan is to go with IMCO SCX upper and lowers with the drive guardian. That being said, ive got a bunch of broken bravos in our hanger where we keep the boats in Florida. I might be willing to donate one as a science project for this purpose ha. It would HAVE to be someone who plans to blow it up with no drive guardian and have a drive guardian on the other side.

Are you moving the box down and getting rid of the Stellings drive shaft system ?

Got Freedom, you gotta take him up on that offer - maybe post a thread to that effect to find a volunteer. The DG could then be added on the second side after the drive blows, so you only have to blow one, and then track how much longer the other drive lasts, the one that always had the DG. Fantastic real world demo. For that matter, Team Saris could take him up on the offer too - except you would then KNOW you were going to have to give up a race to a blown drive - not sure that's worth it even if the drive is free....

PS, I still have a shed full of good nose coned lower TRS cases, full of blown gears, and uppers, mostly with good gears, for those TRS guys that don't want a DG yet, lol.....

Hello
Is there anyone that broke an XR with mounted driveguardian??
I have only found good infos about DG.
At moment i mount in Baja 275 and 662 SCi an new XR Drive out of the box.Read much here and have now ordered an DG for this setup in the hope my XR with tank it to me!
regards.
Michaelhttps://cimg2.ibsrv.net/gimg/www.off...2f291c8a0e.jpg
https://cimg3.ibsrv.net/gimg/www.off...96dacc742f.jpg
https://cimg4.ibsrv.net/gimg/www.off...12ec34963f.jpg

get someone that has a twin engine Bravo app - and if they are buying the DG install one only. Maybe OSO members donate some money to the person doing the testing. If we had 100 people and each gave 50 to 100 bucks person that would be 5 K to 10 K. Find a trust worthy person with a twin Bravo app - and both bravo's apples to apples time on them or even new. Just saying

I built a 850hp blower motor last winter that went in a 29 Warlock World Class. Installed a drive guardian and a XR drive. About his 3rd trip out with the boat, it broke a tooth off an upper gear while getting on plane. Not blaming the DG at all, I think they are a wonderful piece, but the gears can still break. I doubt that he was anywhere close to max torque when the gear broke, therefore the DG could do nothing for him.

On a brighter note, I installed a new XR upper and he beat the snot out of it the rest of the summer with no failures.

850HP is an amazing nummber for an XR!
I will not do so much.But i think it can handle the 662Ci very well for some years!
Michael

I believe thats why they sponsored 4-5 raceboats. Ours being one of them. Whats the difference between a year with DG versus a year without DG and running one engine with one engine without, BUP? We ran the same schedule, props, engines, competition, ect.

Wear, yes. We still had wear on our gears too. But the pits, dents, chunks etc were all gone. As we stated at the beginning of the thread, it won't make gears last forever and it wont make a Bravo an M6, but in our case it took a ton of abuse out of our setup. Instead of rebuilding every 3 races, we're at once a year (6-7 races).
The harder you run, the more benefit you'll reap from the DG. Sounds good to me :D

We wouldn't leave the dock without it. Have had tremendous success running the DG on our Bravo set-up in the race boat. No more twisted shafts. No failures of gears.

Hello
I have mount my engine yesterday and use alignmend tool from merc to adjust!
I can pull in and out of the Dg with one finger
Today i try to mount an XR new out of the Box but i get no chance to mount.
Can pull maybe one inch in the DG and end. I checked 3 time if all is clear with adjustment and found nothing wrong!
I then look for the inner diameter of the DG and found out it is nearly 1mm more (put 26,6mm nut in) than the merc tool(25,7mm) to adjust the motor!
I am pretty shure that the adjustment from the engine is the problem as with merc tool that is so small its a toygame to adjust the engine right!
what way have you adjust your engines with DG?????#
Hope i can get fast help to make my boat ready.!
Michael

We use the Merc tool and an old input shaft to double check.

Alignment with merc tool was perfect!I can hold with one finger and slide in and out!
But new drive will not fit.No wonder as there is a diffrence from 1mm from tool to DG!
Problem is i have no old shaft in fast time here! real a problem for me know!****!
Michaelhttps://cimg1.ibsrv.net/gimg/www.off...b7c0d06058.png

You should make a video and post it on you tube and your website of how the drive gaurdian actuates using max torque with a cgi devolped engine drive guardian and drive behind it.. showing use without a drive guardian and make the shaft glow read and show the 3-5x torque peak numbers. Say 2400 ft ibs. and with the same video show the exact illustration with the drive guardian and highlight the shaft in green and show the drive gauardian slip do a close up of it slipping and how it's slipping (illustrate it with a quick blow up(zoom in) and the slipping action) and then zoom back out and show the shaft torque amount was limited to set torque value, say 800ft ibs .. That will allow everyday people to understand what it does.. hope that helps and hope it can be produced! :) I have them on m6 race drives now 😀 with twin 1200's

Very glad to hear the Good news, I have one on my stage 4 from AADS, (HTM Cat, ILmor 625 hp) With 40 hrs on it. )
Motor was pulled to be re-built to 710 ish, But George said I was good to go, just have to send in DG to get re-set.

Just wish they were out THREE stock mere. drives ago.

A, M-6 is great but out of my budget. everything can break. Cats love to be out of the water, and the DG has already impressed me!
Hopefully its a long term fix to an old problem.