Polishing your lower unit

[Mark Poole ModVP]

Consider that Mercury racing does not polish their racing drives and they offer lab finished props. They should know. I have talked to more than one old racer that said having a lightly textured finish on half of the prop blade works too.

 

[RonShaw]

IMPBA rules (referring to B Sport):

• The lower unit below the cavitation plate may be trimmed, sharpened or polished. No material shall be added to the lower unit.
  

Looks like I was wrong in both cases, shouldn't be a problem!

Yep, thats the correct IMPBA rule.

 

[Mike Hughes]

In the pass some of the K&B lowers werent all that nice. More material on one side to the other. ANd not running true with prop assembly. So grinding them down was good. I sharpen and shape the skeg. I polish it with a scotch brite wheel just cause it cleans up the 100grit belt sanding I do to the lower. My 2 cents

 

[Alan Elzer]

Amen to scotch Brite, it's a time saver & don't have to grind anything..

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[Andy Greene]

Consider that Mercury racing does not polish their racing drives and they offer lab finished props. They should know. I have talked to more than one old racer that said having a lightly textured finish on half of the prop blade works to

Most Champ boat lowers are polished , I spent plenty of time repolishing all 3 Rinker boats before the 1st heat of the weekend -after that we didnt bother.

I asked James if he thinks it makes a chit on our stuff- when I he gets back to me I'll let ya know. The only reason I wanted you to be sure it was legal was from past - really stupid- protests made over altering a STOCK motor.

 

[bob miller]

be sure to show the end results of your polishing ....bob