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Old Sep 25, 2011, 01:44 PM
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Bernhard BB's Avatar
Denmark, Capital Region of Denmark, KBH
Joined May 2007
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Submerged, electric, heavy hull prop

hi
I have a Baby Bootlegger 80 Cm,,,5.6 kg it is a heavy boat,,,i have try to find a full sumerged 3 blade prop to... in 38mm-40mm ..eny ides what prop to look after...?
the racer prop i have on now 42mm from prop shop it do a
lot of air sucking by the prop, also lots of foam ,

Many Thanks Regards Bernhard
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Old Sep 25, 2011, 11:14 PM
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CornelP's Avatar
Bucharest, RO
Joined May 2009
1,990 Posts
http://www.raboesch.com/

Plenty to choose from...
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Old Sep 26, 2011, 12:21 AM
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Bernhard BB's Avatar
Denmark, Capital Region of Denmark, KBH
Joined May 2007
496 Posts
Thanks..... i have try one from there...Do you think they have the best sumerged props...here it is on 11,1 lipo...i have to try 14.8 to..maby it just nead more power ? i have a motor from a Deep vee 9301 in,,,this motor photo is not from my boat...

Baby Bootlegger (2 min 5 sec)
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Last edited by Bernhard BB; Sep 26, 2011 at 12:36 AM.
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Old Sep 26, 2011, 01:52 AM
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Australia, VIC, Blackburn North
Joined Feb 2011
825 Posts
Sounds like it's cavitating when you hit the throttle.
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Old Sep 26, 2011, 01:57 AM
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Bernhard BB's Avatar
Denmark, Capital Region of Denmark, KBH
Joined May 2007
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hi..yes..... thats way i will try a full sumerged prop...and se if that can help? and more volt,,, Maby this can do it,,, http://www.prop-shop.co.uk/index.php...roduct_type=31
with 3 blade GP/4014/3LH/BR








GP/4014/3/LH/BR







GP/4014/3/LH/BR
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Old Oct 10, 2011, 04:34 PM
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Bernhard BB's Avatar
Denmark, Capital Region of Denmark, KBH
Joined May 2007
496 Posts
Baby Bootlegger

hi...so i have don the prop shaft longer and made a suport to it,,and i will try it with this ..35mm full sumerged prop....i have now try nearly all kind of prop and sizes,,,still the same problem...now i will try with 14,8 ..when i get the lipo...maby the problem is the boat wight ..5,6 kg....and 80cm long,,,,,,,,,

Regards Bernhard
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Old Nov 07, 2011, 09:17 AM
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Gordonsville,Virginia
Joined Nov 2009
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It's not coming up on the step , I would try a lot less angle on the prop shaft . It might be pushing the nose down to hard ?
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Old Nov 07, 2011, 11:20 AM
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Tell us more about your motor, and C of G.

Searching for "Deep Vee 9301" I find a small 500g boat with a small motor...

Your Bootlegger is 11 x larger (!) ...

My advice is to try a much larger prop and a much larger motor.

Such a beautiful hull deserves to be correctly powered.
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