Griff

I'm pretty certain that you cannot swap props and run in reverse with NXT's. You will burn up the transmissions.

a.altman

Just curious, on other drives/trans can you do that?

Griff

You can do it with Bravo drives.
I do not believe it can be done on any set up that uses a transmission.

pstorti

iTrader: (2)

I heard the same about the transmissions in forward they ave many clutch plates to handle the load in reverse there are far fewer plates and they cannot carry the load and will break. The rotation should be in the drives i believe you would have to swap drives not props to test in vs out. But confirm with somebody who is sure before you do anything. I am just telling what I have been told.

a.altman

Thanks

a.altman

I thought the idea seemed a little off. Not to mention the issue of switching to outer rotation and adding more stern lift.

bbladesprops

a.altman.

Hello. I am back in the office for 3 days and then off to Key West for the World's.
Indeed you spoke to Brad last week in my absence. I believe Brad thought you were running Bravo XR drives which can be rotated either direction without damage. I love that ability for the simple reason of testing.
So, in your first post I understood you to say you were rotating out. Not in. I assume Brad understood this as well. That is why he would have suggested inward rotation. This rotation can aid in planning as well as add transom leverage to decrease slip % and to allow for better trim reaction. Outward rotation does indeed create more stern/transom lift and can increase slip due to wetted surface area as well as venting the propeller more. Especially with the bottom design and typical exaggerated "X" dimension of the XR hulls.

I apologize for any confusion you may have had and I would look forward to discussing your set up with you at any convenient time.

Also, Kaila called you on Friday just to let you know I was out of the office for a couple days. She seemed to think you were a little unsure of the reason for the call so I just wanted you to be sure it was just a courtesy follow up.

Thank you,
Brett

a.altman

Brett,

Props rotate in. That was explained to Brad. He specifically stated to swap and rotate out to reduce stern lift. That's counter to anything I've read/learned. Maybe he misunderstood. I'll call you.

bbladesprops

Yes you are right in that out will actually increase stern lift.
I don't know the contents of the conversation. Brad is on vacation this week so I can't ask him but obviously there was some miscommunication.
No problem, call when you can.

Brett

PremierPOWER

If you contact Donzi they can send you the spread sheet on the water test they did before it left the factory. Chuck Wagnor was who sent me mine but that may have changed with Everything going on at Donzi. Hopefully they still have all that data