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  Prop for 2001 75 Ficht

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Author Topic:   Prop for 2001 75 Ficht
70_Katama posted 08-16-2002 03:30 PM ET (US)   Profile for 70_Katama   Send Email to 70_Katama  
2001 75hp Ficht.
I was Thinking about a 15" Stainless for my 1970 16'7". Is anyone running this whaler/rude combo?

The boat's primary purpose is inshore fishing. Lot's of trolling and running from hole to hole. I have a 24 gallon fuel tank under the pilot seat, single battery under the console. Trolling at a few knots and a good top end is preferred to a big hole shot. Hope that's enough info.
Thanks in advance
Tim

Bigshot posted 08-16-2002 04:06 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Nope! What size prop are you running now? What rpm's?
70_Katama posted 08-19-2002 09:33 AM ET (US)     Profile for 70_Katama  Send Email to 70_Katama     
Nothing. New motor

Thanks BS

pamlico posted 08-19-2002 03:57 PM ET (US)     Profile for pamlico  Send Email to pamlico     
You should install a prop thats within your operating range at (WOT) wide open throttle. For example if your FICHT's operating range is 5000-5600 rpm's you will need to install a prop that gets you close to the 5600rpm range.

Generally the higher you go in pitch the less RPM's you will have, but gain speed.

The lower you go in pitch, you will acheive higher RPM's, but loose some speed.

If your looking for a quick hole shot you can take your prop to your nearest prop shop and ask him to drill a small hole at the bottom base of each blade. This method allows exhaust gases to escape into the backside of the low pressure area of the prop (backside of it) and the result is a controlled ventilation condition. In turn, this reduces the torque load on the engine, and the RPM will increase into a more favorable power range including giving you more of that hole shot.

where2 posted 08-21-2002 05:27 PM ET (US)     Profile for where2  Send Email to where2     
Carry the prop to a prop shop for vent holes? I just used my 1/4" bit and my cordless drill. If you drill them too big, then you keep drilling until you get to the size that Mercury uses for their adjustable vent hole kits. Use the plugs in the kit to down size the holes... Or have someone weld some SS back around the hole...
Dunk posted 08-22-2002 01:09 AM ET (US)     Profile for Dunk  Send Email to Dunk     
Ficht's are strong engines, but I really didn't figure they'd sell too many 75's considering the weight. How much was the price difference was there between it and a 115 Ficht??

First I would tell you to try a 13 3/4 x 15" alum OMC prop and see if she can twist that. If she can then go to amarket.com and buy a 13 1/4 x 15" Stiletto. I think they are 240.00 , but beaware they will not take it back. Overtons.com will, but they are few bucks more.

15" is the bottom end of the performance props. OMC/Bomb does sell 13" and 14" SST's, but they are not what you would call a real get and go type props.

70_Katama posted 08-22-2002 10:02 AM ET (US)     Profile for 70_Katama  Send Email to 70_Katama     

Dunk,
The 115 was an additional $2,000. Thanks for the prop info!
Tim

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