Hey, all, Might be able to spina few yarns here and there. One or two might involve Hydrobowl races in Midwest. We have been doing them, tho they have been a little quiter. There are a few new boats and players, and I have been trying out new components . Maybe a boat or two on the horizon. happy New Year jake
Ian Cassell was out on the lake with me on Saturday and took some video of my new boat: http://www.youtube.com/watch?v=RQs6YgO93RY&feature=g- upl&context=G2845651AUAAAAAAAAAA The video provides some observations of the ruder working, the trim of the boat and flow on the bow. Rick Willoughby
Hi Rick At the electric boat race, a photo was taken from the rear of my boat & I decided that the wake was excessive so modified the square stern to a point. This greatly reduced the wake but did not appear to improve the speed which is what you had predicted. Additionally I completed several tests on propeller tip shapes & concluded that a simple HOEANER tip was a improvement over the radius ends that you have been using, additionally it is very simple to make. The tips were raked outwards at 30 degrees with a radius where the leading edge meets the tip. I also tried tiplets (look similar to winglets) & found the performance similar to the rake tips but as these were tried on fully shaped propeller blades I dropped the idea due to the high amount of work required. Dennis
Dennis Having spent considerable time now with both systems I agree the side mounted prop offers practical benefits and significant performance benefits over aft mounted. Even the offset thrust can be managed very easily by a bit of tweaking. There is also a less evident benefit if the prop is spun in the direction such that the prop torque offsets the weight of the gearbox. The boat trims out nicely. On the third time out I got over 20kph. I am now close to being power constrained rather than limited by footspeed and shaft compliance. The gear ratio is 1:7 enabling me to reduce prop pitch which lowers prop torque, hence the amount of wind-up in the shaft. The dynamics of this latest drive system will be hard to better. Did you do any boat modifications before last summer? That is a great looking boat with a very impressive performance. I am please to see that you have reverted back to the side drive bent shaft system. This type of drive, I feel is the most practical for launching and retrieving with out a trailer plus it can be serviced while still afloat. Dennis Adcock Rick Willoughby rickwill@...(Continue reading)
That is a great looking boat with a very impressive performance. I am please to see that you have reverted back to the side drive bent shaft system. This type of drive, I feel is the most practical for launching and retrieving with out a trailer plus it can be serviced while still afloat. Dennis Adcock
Hey Bob and Larry, That's better! It's great to hear ideas being batted around again. Some of us (I'm talking about myself here) never had much to add to the group but that doesn't mean we weren't interested in what the rest of you creative guys were thinking and doing. I hope it keeps going on. And on. Curt Curtis Chambers Owner/Pres. Nauticraft Corporation 5980 Grand Haven Rd. Norton Shores, MI 49441 231-798-8440
Hello. Hello, out there. Is anybody there? Is anybody doing anything worth reporting? Or is my receiving faulty? I have not gotten anything for months (years?). Just for the record, Nauticraft is still here; we had a reasonably good year considering the economy and hope to have a better one here in 2012. Well, anyway, a Happy New Year to everyone! Curt Curtis Chambers Owner/Pres. Nauticraft Corporation 5980 Grand Haven Rd. Norton Shores, MI 49441 231-798-8440
I completed a new boat in time for the Murray Marathon but family concerns prevented participation. I have posted some pictures here: http://www.rickwill.bigpondhosting.com/V15_58.htm I have only had the boat out a few times and have already got it going faster than any other. Top speed so far is 19kph and I expect I will get a bit more. I am still battling to get weight below 20kg. This one came out at 21.5kg. I will need to vacuum bag the hull to get lower. Best wishes to all for 2012. Rick Willoughby rickwill@...
Bonjour à tous, voici une newsletter de 2 pages pour remercier tout ceux qui nous ont soutenu pour cette aventure du Scubster. Avec les beaux resultats, nous allons continuer l'aventure avec l' ecriture d'un livre, un projet de documentaire et de nouvelles machines sous-marines et aériennes.. Je cherche un ou des mecenes pouvant nous apporter de beaux moyens financiers, Alors, n hesitez pas à me contacter si vous souhaitez vous associer à un projet alliant la technologie, la science, le reve, l'humain tout en respectant au mieux l'environnement. ps : j' ai oublié de remercier dans ma liste , Pio Plongée et la Station de Ski de Piau-Engaly bonnes vacances -- -- Stephane Rousson 0033(0)603838276 www.rousson.org www.scubster.org
> > Vic > It is a robust two speed hand drill that he bought for $50 but has > added a machined crank shaft. It only has brass bushes so I expect > it will have limited life but the gears are really nice. > > Rick > On 18/07/2011, at 12:06 PM, v garza wrote: > >> >> Rick: >> >> Thanks for the links. That gearbox on the Melbourne boat looks to >> be quite compact! >> >> Vic >> ----- Original Message ----- From: "Rick Willoughby" >> <rickwill@...> >> To: <hpv-boats@...> >> Sent: Sunday, July 17, 2011 6:46 PM >> Subject: [hpv-boats] Some New Boats >> >> >>> The following links show progress on a couple of new pedal boats >>> under development. >>> >>> This one is a video of a Melbourne local with his second pedal boat: >>> http://www.youtube.com/watch?v=HB13MWTbCuo >>> It is made from the hulls of his first boat, originally a small(Continue reading)
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