Found a way of pulsing the water using the pump of a dead smoker (Hen Long smoker that is) In this test I used a pump to prime the smoker pump (smoker pump on 2s) and the rest is just syphoning through the pump to the smoker. You can vary the amount of 'spitting' from the exhaust by running the pump at low voltage or maybe using a peristaltic pump with a small flow.
I did not connect the fan powered smoker unit as I ran out of silicone tube, but the result should be the same as the last vid but with 'spitting' water. Using the smoker pump for water is not perfect as it would need sealing properly, and it's cumbersome, but you will get the idea. I have ordered a couple of small air pumps, so might have another crack when they come. I'll use them at the exhaust to disrupt the water flow if they are powerful enough, rather than use the smoker pump.
Re - As the saying goes good one Cyril
Thanks peter, not quite perfect but it's certainly heading in the right direction. At least it might get people thinking about something different to try with their boats, which if tuned right, might give them extra Brownie points at the pond. Would also be even better with a good sound unit! I'm sure someone will come up with a good idea to refine it sooner or later, (probably on the long drop at 2 in the morning!😁😂!) If I can refine it more, I'll post the results.
JB
Re- I vape and i make my coils and e-liquid.
And just what are you growing in your back yard to make the afore mentioned liquid Martin?
Now we know where all your 'interesting' ideas come from😉😊😂 Good info BTW, found a chart a guy here has done with different wire sizes and resistance calcs.
JB
Hi Nerys, not sure if this is the correct place to post but here go`s ! - hope this helps.
Perhaps you can get some detail also from the videos. Hope you can see the photo files ?
Ken, it was your Wee Nip that started the chain of thought and I thought about building one, but it's one of those projects pushed to the back of the production line. Then I saw this Mickey Finn hull at a price worth considering on Ebay and bought it. Might resurrect with correct rig, might experiment. Too many barges come before that.!
Made a few mods to the cooling system and was hoping for a quiet day for a video ("yeah right") Too busy watching out for an erratic orange torpedo to have much close up fun! Tried out a few full speed turns with no dramas, sticks like glue with no hint of 'roll out', just a bit of cavitation.
"Genie" was a classic Marblehead 50" long. Designed by Vic Smeed, she had a hard chine hull construction.
This was my first "home brew" model yacht and I ended up building 4 of these in total - so pleased I took some picies.
Hi Phil, brings back a few memories. The guy who started producing glass Marbleheads in Auckland in the 70s (Fred Martin) lived just round the corner from me at Bucklands Beach. He was probably partly responsible for the large interest in the class in the early days. They weren't cheap even back then, but it's gone really stupid with the newer IOM boats being as much a $5000 these days. I know what I'd rather spend that sort of money on - a full sized yacht, Just ridiculous!!
It's become a rich couch yachties game. I see them where I run my boats, all turning up in their Land Cruisers, Mercs and BMWs, and most live in exclusive areas. Definitely not a kids hobby any more!
JB
Purchased original Rojair Mickey Finn from Ashton Models 35 years ago - hull suffered damaged so made a F/G mould before repairing and sailing. Made spare hull from mould and there she sat for 35-40 years. Original Mickey was sold many years ago but as retirement approached the burning desire to fulfill old challenges re-emerged.
So , after putting out calls for help, diagrams, photos or information on the model boat forums, thanks to "John Dowd" and a couple of other guys, I finally got round to resurrecting this fantastic little yacht.
Finally, had a decent day (if you can call calm but fully overcast decent) and managed a try-out of the ST. Unfortunately had the pleasure of some yappy kid asking a thousand stupid questions, then his grandfather started, while I was trying to set it up. Got so distracted I ended up breaking the mast while trying to grab the boat and answer rapid fire questions. Trying to do a video and the kid's yelling behind me, and the grandfather just let him carry on.??😠 Don't mind kids being interested at all, but some are just a pain in the 'transom'
Anyhow, enough grumpy old man stuff, -boat went pretty much perfectly and is plenty fast enough, and also very economical on the batteries, (Vid was twice as long before editing) and when I stopped they were still at 3.9v/ cell (they are only 2200MAh 2s ) and were only 4.1 at the start. All in all, distractions and a bit of mast damage aside, I'm quite happy with it, (did hit the jetty at a 20deg angle at 2/3 throttle while taking photos, - going for that last shot -😀 bounced off without a mark, - lucky the jetty piles are slimy and I build tanks !)
I get easily confused in my old age Doug😐 I've got 2 cars, an auto and a manual, - I've noticed lately, when I shift to P for pass there are funny noises, (noticed the same when shifting to R for race) and in the manual, why does it make funny noises when I pull the stick back to drive off?😮
Confused😐
Thanks peter, not quite perfect but it's certainly heading in the right direction. At least it might get people thinking about something different to try with their boats, which if tuned right, might give them extra Brownie points at the pond. Would also be even better with a good sound unit! I'm sure someone will come up with a good idea to refine it sooner or later, (probably on the long drop at 2 in the morning!😁😂!) If I can refine it more, I'll post the results.
JB