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Re: Thunda Babe

Posted: 22 Dec 2019, 16:15
by WoodRay
Doc wrote:How about a motorbike muffler shield on each pipe [low side ] between deck and pipe. This will direct cold air to lower section. Maybe something small [ monkey bike ].
Doc.

Not a bad idea Doc.

Re: Thunda Babe

Posted: 22 Dec 2019, 16:18
by WoodRay
Chivs wrote:Yes Craig also oven mitten territory!!!! Ask pigeon about his third degree hand burns using the exhausts as handles after a run!

Beware and good luck with the muscle memory!


Thanks Chivs. I wonder if Mr Pidgeon swore much??

Re: Thunda Babe

Posted: 23 Dec 2019, 21:01
by WoodRay
Finished off dry exhaust today and rework of cav plate stays.
Managed a test run this arvo and had to wind back mixtures a long way to get it to rev past 3 grand. Engine is now clean revving throughout the range.
Dropped the Cav plate 1/4" and now I have a porpoise free boat. I think weight reduction with the seat and exhaust system has helped a lot. I now have a good platform to work with regarding horsepower and speed increases in the future. I was worried I'd be stuck with a porpoising monster unless I was running in whitecaps. Overall a good win. Very very pleased.
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Re: Thunda Babe

Posted: 14 Jan 2020, 11:13
by WoodRay
I aptly call this "smoke on the water"
Some tuning and testing with the help of Ross.
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Re: Thunda Babe

Posted: 14 Jan 2020, 15:18
by Greg
Nav lights - check
Fog horn - check
Breathing gear - check

Re: Thunda Babe

Posted: 17 Jan 2020, 20:49
by WoodRay
Some prop testing today. Unfinished prop is marked as a 10 x 8. Finished prop is 9 1/4 dia with slightly more pitch and cup on trailing edge, but with less blade area and diameter.
The results were not what I thought. Anyone guess the outcome?
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Re: Thunda Babe

Posted: 18 Jan 2020, 09:43
by Wildwoody1
Small blade looks good.

Re: Thunda Babe

Posted: 21 Jan 2020, 18:54
by WoodRay
2000 Rpm difference in blades. It was the larger blade that allowed revs to 6000 but 3 mph slower. The trailing edge cup and slightly larger amount pitch over all makes a huge difference on the small blade.

Re: Thunda Babe

Posted: 03 Mar 2020, 14:55
by WoodRay
A great weekend at Paynesville capped off by making contact with the grandson/son of the first owners Ces & Ron Looney.
Looks like a trip to Wollongong.
Terry sent this pic of them both in Flamingo which was purchased after Thunda Babe.

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Re: Thunda Babe

Posted: 03 Mar 2020, 17:03
by bootlegger
Awsome