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-   -   fuel tanks in a Motion... (https://www.offshoreonly.com/forums/motion/184317-fuel-tanks-motion.html)

Maritime_Eng 05-10-2010 12:00 PM

My current 30 Motion I installed new XLPE (Cross-linked Polyethylene) fuel tanks, 75 gals each. This material is good with fuel with any amount of ethanol. I also move the new tanks back 5 feet to improve the handling of the boat. This made the boat ride much better than my other motions. Then I cut the tops off the old tanks and refinished cut edges.

CcanDo 05-10-2010 02:33 PM


Originally Posted by Maritime_Eng (Post 3107029)
My current 30 Motion I installed new XLPE (Cross-linked Polyethylene) fuel tanks, 75 gals each. This material is good with fuel with any amount of ethanol. I also move the new tanks back 5 feet to improve the handling of the boat. This made the boat ride much better than my other motions. Then I cut the tops off the old tanks and refinished cut edges.

Very interesting !!!

5' is quite a CG change....Do you have Ballast tanks ?

I would endorse your decision for Polyethylene tanks.

Maritime_Eng 05-10-2010 02:50 PM


Originally Posted by CcanDo (Post 3107153)
Very interesting !!!

5' is quite a CG change....Do you have Ballast tanks ?

I would endorse your decision for Polyethylene tanks.

I do have one in the bow but I have never needed to fill it. After alot of changes to setup and new props the boat is now balanced perfect and runs great!

Maritime_Eng 05-10-2010 02:52 PM


Originally Posted by CcanDo (Post 3107153)
I would endorse your decision for Polyethylene tanks.

Use only XPLE. LDPE or HDPE will swell 5 % over time when exposed to gasoline.

CcanDo 05-10-2010 09:49 PM


Originally Posted by Maritime_Eng (Post 3107177)
Use only XPLE. LDPE or HDPE will swell 5 % over time when exposed to gasoline.

Good information, that I for one, didn't know, thanks !

Have you run with any 28 Skaters ?

Maritime_Eng 05-11-2010 05:20 AM


Originally Posted by CcanDo (Post 3107546)
Good information, that I for one, didn't know, thanks !

Have you run with any 28 Skaters ?

Yeah I have ran with 28 and 30 skaters. What would you like to know?

CcanDo 05-11-2010 08:01 PM

Just interested in how the two compared overall.

Maritime_Eng 05-11-2010 08:27 PM


Originally Posted by CcanDo (Post 3108316)
Just interested in how the two compared overall.

The 28 skater is way faster with similar power but the 30 Motion runs better in the rough stuff. The 30 Skater and the 30 Motion are very simliar in speed and handling.

supercat 06-11-2012 10:56 AM

Interesting....although the 30 I raced was a 94' I moved the fuel tanks 18" forward for perfect balance.....
I think Motion probably moved the tanks over the years. I found balance was also affected by variables like if you are running short shaft offshore motors, standoffs or jacks, etc. At one point I even had both batteries up in the front!

Plowtownmissile 03-17-2013 11:52 PM

As far as the 35 Motions, I heard the 2005+ are aluminum and the 2004 & older are fiberglass. Is this true?


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