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Mar 09, 2013, 11:43 AM
Return of the Warlord
vernon7026's Avatar
Discussion

c & g of a genesis cat


does any body know what c&g of a genesis cat is.

Thank you
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Mar 09, 2013, 11:45 AM
Registered User
CornelP's Avatar
I would bet on a typing mistake from cog (center of gravity)...
Mar 09, 2013, 12:21 PM
Return of the Warlord
vernon7026's Avatar
Oops

lol, meant COG
Mar 09, 2013, 03:38 PM
Steps? What steps?
zozer's Avatar
Terminology aside it will depend on the boat's weight, prop and speed. Start with the CG 32% forward measured from the sponson transoms - not from the extreme rear of the boat.


.
Mar 11, 2013, 09:26 PM
Platinum Card Member
sundogz's Avatar
That works out to be 13-1/4" from the very back of the boat (transom).
Mar 12, 2013, 08:59 PM
Steps? What steps?
zozer's Avatar
Okay I guess a terminology lesson is in order, but maybe not. "The very back of the boat" is not the transom. The Genesis hull has an overhang for the rudder mount - the sponson transoms are at least four inches ahead of the "very back of the boat". See the photo below.






.
Mar 17, 2013, 09:08 PM
Registered User
so how would you set your batteries do you center them on the 13 1/4 line or do you set them in front of your line or behind your cog line?
Mar 18, 2013, 01:30 AM
Registered User
I have a Genesis & never bothered working this out.

I went to the lake ran the boat then brought it in & adjusted the battery position to suit.

Here is the result..........
First run of Genesis after rebuild (0 min 0 sec)
Mar 28, 2013, 10:06 PM
Platinum Card Member
sundogz's Avatar
Quote:
Originally Posted by almaidah View Post
so how would you set your batteries do you center them on the 13 1/4 line or do you set them in front of your line or behind your cog line?
Mark the hull (both sides of hatch opening) at 13-1/4" from back. Put batteries in, lift hull at the marks, see which way you need to relocate batteries to get it to balance level. This is a good starting point, you'll be close.
Sep 30, 2014, 05:23 PM
Go fast, pull up.
Fidelity101's Avatar
So 13.25" from back of boat or start of sponsons?
Sep 30, 2014, 08:42 PM
Platinum Card Member
sundogz's Avatar
The very back of the boat (transom).
Last edited by sundogz; Sep 30, 2014 at 08:44 PM. Reason: keep it simple.
Oct 04, 2014, 10:07 AM
I feel the need for speed!
scorpion1's Avatar
I believe Bill runs his cats at about 38% cog from transom. Seems to keep them planted and not so flighty.
Oct 04, 2014, 12:09 PM
Go fast, pull up.
Fidelity101's Avatar
Mine is hopping along in the water at full throttle and I cannot make it stop. It runs great at half throttle

Genesis (0 min 15 sec)
Oct 04, 2014, 03:42 PM
Platinum Card Member
sundogz's Avatar
Looks like you either need to move the center of gravity forward some and/or adjust the strut. The bottom of the strut should be parallel and level to the bottom of the sponsons (lay it on a table to see this).
Oct 04, 2014, 04:02 PM
Go fast, pull up.
Fidelity101's Avatar
Thank you Sundog. That is where I started with the strut and I have since tried raising it another one eighth of an inch. I have moved the batteries all the way forward and then all of the way back and it doesn't seem to make any difference regarding the hopping in the water… Maybe the batteries do not weigh enough to make a difference


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