I'CE

502ss, don't know how far you are along in the installation/actual rigging, but I have a 33 Sutphen with Kaama drives that you can come climb all over take pictures of, measurements or what ever once this snow disappears. It's in MA just down Rt.93 from you. As you are probably figuring out, your engines need to be mounted very low in the boat. Clearance from oil pan to under the engine hull support stringer is about 1/2 inch on mine. From the rear of the trans to the transom assembly is an "H" style u-joint with a flange to flange at each end. The flange on the transom assembly is splined giving it front to rear slip positioning. On the transmission side it is flat to flat bolted. The twin disc 502 is a drop style trans. and the harder alignment angle is" there" being the "most angled" out of the two. It is close to near "neutral" alignment from the rear "H" joint to the transom assembly. Hope this helps, PM me your # if you want to chat.

502ss

iTrader: (3)

Yeah I did notice that after seeing some people saying in the comments that the drives are arneson. I am so used to seeing arnesons with the drop box it never dawned on me. It's still a weird setup! Anyway CDShack has been providing a ton of pictures because I have been laying out the whole re-rig on CAD and no matter what I do I can't get the motors to fit in the bilge. It turns out it is due to that bulkhead you mentioned! Looks like I will need to do some more engineering!

502ss

iTrader: (3)

I would love to stop by sometime and take a look at your setup. I work in Boston everyday so maybe when the 12' of snow we have decides to melt we can setup a get together! Thanks in advance, much appreciated!

...Jim

I'CE

Jim, if you only have 12 inches your lucky. My building's roof at work was over 40 inches just a few weeks ago. I'll PM you my #.

502ss

iTrader: (3)

I wish! I said 12' which is feet. I of course don't have that much but this is the snow bank in front of the boat!

Rik

Here is to the "Why's" on that setup..

Those are in line model Arnesons. They have no Reduction, Rotation nor Drop built into them, (our drop box models have those features) so in order to use them with a petrol engine, you have to provide those features internally.

In order to do this, one can use a TD 502, or a ZF85A and push the engines forward in the boat.. Or one can merely turn the engines around, protecting the cg, and use a V Drive. Since the V Drives don't shift, they piggy back them to a Velvet Drive. Now how they are handling the rotation??? A Velvet drive is not 1:1 in reverse nor do they have as many clutches on the reverse side so one cannot merely run one in F and one in R and get the rotation. The V Drives I've seen only come in one rotation. The diesel ones have a marine gear that handles the rotation before the V but I don't know what exactly is in this boat to make a 100% certain comment.

Unlimited jd

iTrader: (5)

I have a couple of those v drive units at the shop, a couple with a chain and a couple with gear sets. They can be setup to reverse the rotation, but again the parts are rare, and the ratios are usually spec'd for big cruisers and such.

KAAMASCARAB

I wonder how strong the V drive setup is in a offshore boat, with getting air and throttling. That long driveshaft better be good!

502ss

iTrader: (3)

Not a setup I would be interested in!

Boatlesss

All the speed master boats have a drive line in them so why would it matter because it's connected to a vdrive? It doesn't know what it's attached to.