any chance you are blowing the prop out and it is not a transmission issue? you have higher x dimension with a bigger pitch prop which is possible lifting out of the water. I raised my x dimension on my scarab so high it would not get on plane. it would hook up right until it tried to crest and blow out. I had to use 5 blades.
I wish this was in the works before I removed my trs drives and converted to bravo's the shifting of trs is much nicer.
awesome idea and great work machine and welding. I love when people think out side the box and are able to save themselves money vs. buying over priced parts simply because there are not options to choose from. as the person in earlier post stated if were able to shorten a bravo. if you were a little less priced than imco you could make a killing as well as imco would have to lower there prices. don't get me wrong I get R&D time and cost however how long is that applied to prices/

It may be blowing the prop at high speed but not sure just yet. The prop I've got right now I bought used cheap and it has been modified and I really donot care too much for it. But it definitely had trans issues the fluid was fried and clutches were warped. Just before I pulled the trans I shimed the pressure up to 200 on the transmission and it worked alot better up to about 5500 where I think the prop began to blow out. Hopefully the weather will hold out for us here so I can try it out this weekend.

Two steps forward!

What modifications did you make on the transmission?

Good luck this weekend with the testing.

Nothing too trick. It's the first I've ever worked on one of these. But the things are pretty damn basic. It uses the same style clutches as a gm powerglide. our Lenco race transmission also happen use the same style clutches and steels. All I did was add a extra clutch plate and steel for now and built the sump using a 4l60e trans filter and broomed up the pump.

There a crap load of TRS boats out there, this process that he is doing is super cool, Konrads are quite pricey

Curious after when all is said and done what a kit would run from a basic Mold of what what's been done here? I m very impressed without a doubt. Still no answers for twin app yet correct? So any guesses on what cost would be? Lot of work went into this as well as pride. Great job!

Thanks for all the kind words guys!

Here's a little update..

Took the boat out this weekend and the water here was pretty rough (18mph winds) so I didn't feel comfortable airing it out but at 5800 rpm and not really trimmed out with plenty of throttle left in the stick it ran 92 mph full of fuel and 3 adults in the boat. I estimate it will probably turn this prop 63-6500 rpm at wot. I am tickled to death so far with the attitude change that has been made with my boat. Honestly I was nearing the idea of getting rid of the boat because I was so unhappy with the way it handled.

As far as pricing on a unit goes that is something I am still working on as I would like to be able to cast my own cases using bravo type internals that wouldn't need an adapter plate to mate up to the upper.

And as far as a twin setup goes the only real solution at this stage is a reverse rotation engine.

Iam very curious tho at the size of market that I would be looking at for these setups both twin and single engine boats?

I just know you wanna see that needle sail past 100 and sounds like you will undoubtably will. Be careful though.... Sounds like your going about it right though. Difficult to go out and NOT drop the hammer and air it out but very smart especially with others in the boat. If you ever lost a drive before at hi speeds you know what I'm talking about. Absolutely the most messed up feeling in the world.

Back to how much interest it would be interesting. I myself have been all over the board with boats and drives however ended up with an affordable paid for project with trs again. Someone like me would be interested for sure if the reverse engine rotation was possible. I'd sign up in a heartbeat however seems like most gear head boaters out there nowadays have all the latest good guy engines/drives etc. I'm one of the ones that been there done that and now back to something I pay cash for as I go but still haven't lost the need for speed. I'd be very interested in what that would do for my 32' twin don aronow hull design 6600 pds with trs drives with twin 600hps.

I need to get the drives up and konrads would help however I'm very certain with the right props I could much more than 1.7". Just know I'm on board with you in your early stages if that means anything. Sounds like your doing well and very brilliant on your own but just sayin.

Take care for now. Maybe need to get the message out here on the board and try and achieve some accurate numbers from non bull****ers who are very serious about the mods and go from there. Then start taking some deposits to really narrow it down. My biggest concern for twin app is the reverse engine rotation and that's huge cause if I had to guess the majority of trs drives these days are on twin engine boats. Perhaps 80%. Just a guess. Kind of a dying off breed yet still many out there.

Stay tuned
Tks
John

I would be interested in a pair for sure. I am certainly not opposed to the Konrad setups but right now the cost for a pair is about what my boat is worth. I think there would be more interest than one might think.

alpha 1 gen 2 left rotation lower has shorter bearing carrier with gear on carrier side instead of in the nose like right rotation
gen 2 bearing carrier would be at least worth looking at for specs, it might even work.

crazy idea would be 3 gears in lower, nose gear free wheels and takes push from prop rather than push from prop trying to shove gear out of carrier into pinion and bang