New Transmissions showed up! BADDD!!!!!!!
 

My new trannies showed up. They were made by Jim Lee and Tyson. The are very impressive!! Hopefully this will be the answer to getting rid of those pain in the a$$ crash boxes!! If they hold up I will be a very happy guy!

Nice

Way cool!!!!

If Jim has not broken one, I think you'll be very happy.
Tyson is a smart guy too!

can you give more info,like the brand,and hp&torque ratings.the unit looks very impressive.

the transmissions are Speed shift marine transmissions... it is me and Jim Lee's company...

They are not a normal marine transmission with an extra clutch or two,,,, and they are not a 1970's power glide with an adapter to make it bolt up to a marine bell housing...

these transmissions have been in the works since 2003 when I had two speed powerglides in my boat and kept breaking them.. I bought the best transmission parts money could buy (tci stright cut 12 dp Planetaries ,,,10 clutch pack,, ect..) and even with all the goodies they still broke every time I took it out.. so after several tries with them and bams I just went direct drive with the u-joint hooked directly to the crankshaft.... and you guys thought crash boxes were bad... try no neutral and no reverse... anyway.... I decided then that I wanted to build a two speed transmission for my boat so it would be usable again... and now six years later we finally have them available for purchase... there were a few years of how to fit what we wanted in the same package size as a bam so they would be a direct replacement. then we built some and put them in Jim's 46 skater a year ago.. we have made some changes to the valve bodies.... the first ones we built were fully electronic shifted with a toggle switch .... and then we built a manual shift for it... so the ones that are in jims and gino's are manual shift with your shifters from first, neutral, and reverse just like a bam, and then when you want to go to second there is a toggle switch that switches both of them at the same time..
we have tested these extensively in the 46 skater in rough seas leaving the throttle on the dash trying to break them, and so far have never broke any parts in them, there are some changes to oil passage ways and cooling passages to keep the temp down but the same internal parts are still the same ones we originally built them with...

as far as horespower rating for them.... we have ran them on our dyno with an 1800 hp engine and they did not slip... the internal parts should handle 2500 hp... but I will not be able to test that hp for a couple more months till we get my new engines done.... the good thing about every single part being made in-house is that if we do put bigger power to it and have a problem we will just make it stronger..

we have made all the different input shafts... the standard bam small spline,,,, the short crash box big spline,,,, the long crash box smaller spline...

technical specs...

first gear 1.5 to 1 good for docking and getting on plane without putting alot of low rpm load on the engine, keeps engine from dying when you are going in and out of gear...
and perfect for turbo engines that would have trouble being over proped and not being able to get on plane...

second gear is 1 to 1 when its in high gear all the internals are spinning the same direction... it basically locks the input shaft to the output shaft,, the only thing drawing power is the oil pump to put pressure on the clutch pack... so there is so little horsepower draw that we could not measure it at 6000 rpm. I would assume less then 5 hp...

reverse is 2 to 1 which is good to not have the engine die when it goes in and out of gear but props do not work well spinning backwards because they were not designed to work that way, and the prop wash hitting the back of the boat... but they work fine and if you need to backup faster you may need to rev the engine alittle.. a crash box has the same problem of being lower geared in reverse...

Length: 12"
width: 12"
height:13"
weight: 110 lbs
$12,000 each

available as electric shift or manual shift..

Tyson
417-437-0665

Nice Part!
 

Nice work and Kudo's to all involved! They look and sound as though they are based on sound engineering practices and good internals. Hope they work out well as they will definitly make running boats like yours a lot easier to shift and give them increased efficiencies at low speeds and high speeds.
This tranny development just supports to old sayings!
1. Neccesity is the Mother of Invention
2. Nothing is impossible, it just costs more!

Best Regards,
Ray @ Raylar

thanks... there is alot of time and energy (and money) to get to this point. so points 1 and 2 are correct..

here is a pic of the billet cases...

Wow, very impressive to say the least.

Your not charging nearly enough IMHO.

Hey, mind your own business.:drink:

Nice work Tyson.

How do these compare to the Coan 2 speed trannies??

There is no comparison....Coans are a powerglide for a car with an adapter bolted to the front to make it bolt to a marine bell housing, I did that back in 2002 they worked fine till I put big power in it then they broke everytime I took it out. Which is why we built this one from scratch. Coans are not in the same ball game as these, the only thing you could compare is that his are a two speed also.

I'm not bashing coans, or bams for that matter, There is a place in the world for everything, if I was building a new boat and it was a 36 skater or smaller and I was putting 1100 hp engines in it I would just put a bam in it because it would work fine and there would be no reason for anything else, but that's not what my transmission was designed for,

Nice job guys! That thinking is what made this country great! Hope it all works out for you.

Here they are in Jims 46 back in july 08.

Thanks for the info!:ernaehrung004:

That was a fun day!!! Thanks for posting pics!

Look forward to seeing you in Miami!!! Tyson and I need to warm up a little. Let us know how we can help with anything and we will come down. Thanks!! Now you can look cool again when you park your boat!!:drink:

That is what it is all about & you guys do it very well! :drink::drink:

It helps when you don't run into things!!!:drink:

How far forward did you have to move the motors?

From post #7 on this thread: "how to fit what we wanted in the same package size as a bam so they would be a direct replacement"

Jim and Tyson-they look like they are top of the line pieces.Question-do you have a plug in version for staggered v -botttoms?Do they automatically downshift to first or can you start out in second?

Hopefully one day I will need a pair of those bad boys! they look killer polished out by the way.

Nice job guys:)

I'm going to buy two just to put on the shelf to look at.

We could make a Plugin version if someone wants one,

you have a toggle switch on the dash that determines which gear you are in, you can put the switch in second gear and have reverse-neutral-second,,,, on your shift lever ,,, or put the switch on first and have reverse-neutral-first on the shift lever then flip the switch when you want it to shift to second.

Really good stuff. Now I just wished I had a boat desrving of technology like that

I sent this thread to Dave Coan from Coan Engineering. Below is his response.

Tyson says that there is no comparison of our trans to his. I doubt that he has ever seen our trans to even comment on it. He claims reverse ratio is 2:1 which I doubt. I hear that it takes a lot of throttle to back up. We ran the 43' Nortech in the Miami to Islamorada Poker Run last weekend, great experience & no problems !

Just as the 40 year old big block Chevrolet engine platform is the choice of today's 1200-1400 hp marine engines, Coan Engineering's aftermarket Powershift XMT 2 speed design is an example of the continuing technology improvements made to the Powerglide style transmission platform in recent years. It is rated for 1600 lb/# torque and 2000 horsepower, 1.82 :1 low gear,1:1 high gear with 1.61:1 reverse. By incorporating time tested and proven aftermarket components used in automotive racing applications, Coan is pleased to offer the Powershift XMT's strength and reliability at a substantially lower price than their closest competitor. Make the XMT your FIRST choice when considering a 2 speed and rely on a leader in the business with over 30 years of experience.

Dave Coan

Like we have said several times we wish Dave the best. Hope u get a commision or something for the way you keep promoting his transmissions. This thread is about Gino and some friends that have come up with something that has been proven to work in a big heavy boat with big HP.

Left them in the same place.

Tyson could you make the second gear a overdrive????

Great work guys!

Help out with the fuel mileage??

$12,000 for a work of art like this? I wish you would focus on a low cost turbine for us po folk!!! No worries that you'll be doing good things for offshore owners.

nice job jimmy looks nice good luck with them

what temp does it run?

Thanks!!!

150 F to 160 F