ashley needham | 10/12/2013 08:03:42 |
![]() 6833 forum posts 200 photos | Bob. thats the idea. You only need a quick look and a few basic dimensions and off you go. Thats what I do anyway! No point in making anything difficult if you can make it work simply. Will post vids asap. The lotus one is uncanny in its depth keeping (for a dynamic dive machine). Pauls models need to be grouped together to emphasise the sameness of the hull and difference of the top. Ashley
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Paul T | 10/12/2013 13:23:44 |
![]() 7185 forum posts 1214 photos 2 articles | Bob Very happy to renew the partnership with this new design, you will have to let me know what motors you want to use so that I can ensure that we have sufficient space within the model and that the drive angle remains shallow. Paul |
Bob Abell | 10/12/2013 14:01:02 |
![]() 8951 forum posts 2824 photos | Hello Paul You can select any motor/ motors you recco at this stage and we'll work from there......Twin motors would be more interesting Let your imagination.....Run riot! Bob |
Paul T | 10/12/2013 14:26:54 |
![]() 7185 forum posts 1214 photos 2 articles | Bob We will stick with a pair of 600s with the reverse drive system that we discussed before. Paul |
Bob Abell | 10/12/2013 14:34:40 |
![]() 8951 forum posts 2824 photos | As already mentioned.....The flexible coupling as drawn is not required In fact....It won`t work!..........LOL Bob the Engineer |
Paul T | 10/12/2013 14:44:06 |
![]() 7185 forum posts 1214 photos 2 articles | You're right Bob but it will work in a set up like this I am now hunting for some small encapsulated bearings as can be seen under the mounting plate in order to design a bespoke set for Brutus. Paul Edited By Paul T on 10/12/2013 14:46:56 |
Bob Abell | 10/12/2013 14:47:29 |
![]() 8951 forum posts 2824 photos | Just had a look on the net and discovered that the Axehead type of hull really exists and is a patented design! So we`re "Hitting the ground running" As they say.....And off to a flying start Here she is...... I like the hollow keel and the aggressive looking prow Bob |
Paul T | 10/12/2013 15:08:45 |
![]() 7185 forum posts 1214 photos 2 articles | Yes Bob its a design type that has fascinated me for some time but we are not exactly hitting the ground running as you will have noticed that the larger ships have quite a few stabilisers and therefore I have to assume that they suffer from stability problems. Brutus has no stabilisers and relies on hydrodynamic design to maintain stability and I am having to be very careful where the main point loads are positioned, I expect that the finished model will need some very precise fine tuning at the lake side to get the trim right. This is why I said that the build will a challenge to your theoretical skills as well as your building skills. Motors and batteries will have to be placed in exactly the correct position and any change in specification will result in a weight trade off somewhere else in the design. It will be very easy for the model to nose dive or for the bow to ride to high if the weight distribution is not precise. Paul |
Telstar | 10/12/2013 16:58:39 |
![]() 323 forum posts 32 photos | Hi Paul Your design reminded me of a model from my past. I finally found these photos of Tom Clements from one of the Newcastle clubs with his Straight runner. It has quite a deep stem and I think it was powered by 4cyl T Westbury design engine (Sealion) driving twin screws the mechanism on the rear deck is screw adjuster for the twin rudders Tom |
Bob Abell | 10/12/2013 16:59:15 |
![]() 8951 forum posts 2824 photos | Shop floor to Pie in the sky We can make our own motor drive, as you originally laid out.....Don`t need the countershaft I have noticed that our Axe Head is rather blunt, compared to the real thing! We`ve got a cruiser shape, for some reason How about a servo operated elevator at the rear to cancel out the Johnny Wiesmuller effect? Just throwing a few spanners about
Bob
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