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>> Home > Tags > sailing

sailing
sailing
Twin motor control problem by RNinMunich Fleet Admiral!   Posted: 3 days ago
Good luck John 👍 The 'hurricane' brought us a superb Indian Summer here in south Germany, blue skies and 25°C in Munich. 😊 Should last until Saturday, then the rain is back 🤔 It really is an ill wind that blows nobody any good! To avoid the binding timing problem Dave describes above use a separate RX batt and disconnect BOTH BECs!! Then only switch on the ESCs after the TX is bound with the RX. Several RC module manufacturers warn against BECs, e.g. Action Electronics! Happy sailing, Cheers Doug 😎

Twin motor control problem by John Fleet Admiral!   Posted: 3 days ago
Thanks Dave and Doug, I will make sure the ESC's are set up and if the hurricane has passed I will look forward to a nice day sailing 😁

Twin motor control problem by Dave M Fleet Admiral!   Posted: 3 days ago
John As you are using 2.4Ghz radios there is quite a long delay in the binding between Tx and Rx. The ESCs also perform a set up and I have noticed that this is often quicker than the radio. As a result the ESCs have no signal and can revert to a failsafe state. If you have correctly set up the ESC with the tx then it should retain this setting unless you press the set up button whilst the lights are flashing. I suspect this is at the root of the problem. To restore the settings to your set I suggest you use a separate rx battery, centre the throttle stick and trim and get the Tx/rx working together. Then switch on the ESC and whilst the lights are flashing press the set up button and move the throttle stick full forward (solid green) then full reverse (solid red) return to neutral solid red/green. If you now switch off the esc and rx battery and switch back on the ESC should have solid red/green light showing. Repeat with the other ESC and test. Switch off and connect both escs via the Y lead. You can use one ESC to provide the rx power but do disconnect one red lead. Centre the tx throttle and trim and make sure you switch on the ESC with the BEC connected first. Hopefully both ESCs will now have solid red/green leds. I use three Mtronic ESCs with my RMS Olympic and had a very similar problem. I suspect the change from bench to water is more to do with stick/trim alignment and longer binding time due to other 2.4 Tx working in close proximity at the sailing site. I look forward to hearing your efforts next wednesday - hopefully the next hurricane will have passed by then.

MFA TORPEDO 500 / BATTERY INFO by RNinMunich Fleet Admiral!   Posted: 4 days ago
Hi al, jarvo's answer is more or less correct but not the whole story! Here is a reprint from my attempt to clarify various misunderstandings and misuse of terms related to batteries - usage and maintenance - posted to a thread "battery charging" you can find under 'General Sailing'. "Hi Both (and all other non-technical guys here!) (Dave_M please jump to the next post or topic!😉) To avoid further confusion amongst the non-technical members can we perhaps straighten out the technical terms involved in battery charging and use (strictly speaking the dimensions or quantities involved). mAh (milli-amphour) is a measure of the capacity of a battery: how many 1/1000 of an ampere (A) it can theoretically deliver in one hour, if in perfect fully charged condition and under perfect environmental conditions. (What you ain't never gonna get!) When the outside temperature drops so does the usable capacity 🤔 Charge and discharge rates are measured in ampere (A). under 1A the milliamp (1A/1000, unit mA) is usually used for convenience. Quality battery packs are marked on the case with maximum charge and discharge rates in A. Sometimes marked as xC/yC. xC is the MAX charge rate and means x times the nominal capacity/1000. yC is the MAX discharge rate (i.e. what your motors take) and often means y times the nominal capacity/1000. Sometimes the max discharge rate is given as a multiple of the max charge rate. See example in my photo. These are MAXIMUM warnings and NOT to be taken as the norm! See example in pic. Capacity 4000mAh = 4Ah, MAX charging current is 8A =2C, (4000/1000)x2. Half an hour charging gives then 8/2=4Ah. I would never ever charge at anywhere near this rate! Charging at 500mA (0.5A) for 8 hours (0.5Ax8h=4Ah) is perfectly adequate and much more gentle on the cells i.e. longer life 😉 MAX discharge current is given as 240A = 30 times max charge current or 60 times capacity in Ah.(4). If I used it at this rate it would probably be irreparably damaged (toasted) in just under a minute (0.9999r) 😡 If any Lixx pack gets HOT while charging or in use take it to recycling pronto, before it sets fire to your boat or workshop/house😡 ALWAYS MAKE CERTAIN THAT YOUR CHARGER IS SET FOR THE TYPE OF PACK YOU ARE USING, NicAD, NiMh, LiPo OR LiION etc (don't forget the balancer connection!). Sorry for teaching some 'grandmas' to suck eggs but having seen so many questions about battery charging and much misuse of the parameter units for batteries in the responses (as above) I felt it was time to clarify things for the non-technical among us, for their own safety and the health of their wallets!" Cheers Doug 😎

MFA TORPEDO 500 / BATTERY INFO by jarvo Fleet Admiral!   Posted: 4 days ago
The basic of C rating is charge and discharge. ie 2200 mah X 25 max discharge, dont charge above 1amp as it will shorten the battery life and if you are getting close to the 50amp discharge the cells wont last long. The watt meter is fitted in line from the batteries to check what power you are drawing when sailing so giving you an idea about run time. The voltage beepers are needed to protect the cells from being discharged to far, below 3.3 volts and the cells can die. They are fitted into the dallance lead of each battery. There is a deal on ebay for Flurion 3s 2200 lipos £12-99 each i have 4 in use in my RAF Fire Tender with twin 700BB turbo motors, get about 15 mins at full throttle Mark

Twin motor control problem by John Fleet Admiral!   Posted: 4 days ago
Hi Berty, That is what I will be doing at the lake tomorrow. I have found the problem impossible! So in the absence of anything else will try a new esc! How can something change when it is in the water! There are no connections to the shafts or external in the water! Anyway it will be sailing backwards at Bury tomorrow.

Brixham trawler IBEX by Dave M Fleet Admiral!   Posted: 6 days ago
Hi Bellman My Club sail several similar boats as well as an Ibex. They are all fitted with detachable keels which are fitted prior to sailing but can be removed for transportation and display. Our sailing waters are large and exposed and without the keels the models would not be able to be sailed. On the water the keels can not be seen. I tried a long keel on my Cariad and it was not a success as the keel tended to keep the model in a straight line. I now use a detachable bulb keel. The amount of lead will depend on your model and its overall weight. The bulb keels are a fibreglass moulding that we fill with lead to bring the model to waterline after inserting fore and aft threaded rod into the bulb. You will need to have holes in the keel to let the rods thro and long enough to be above the waterline. I fit a plastic tube and wood support inside. A washer and nut hold the keel in place. Before filling with Resin weigh the resin in the tin and remove that amount of lead from the bulb. Once set I use silicon to make a good seal between the bulb and hull and which remains attached to the bulb. Attached are pics of my Cariad.

rig & sails by Dave M Fleet Admiral!   Posted: 8 days ago
I used to live on the Wirral and had friends worked in Cammell Lairds. I do believe they also built in a similar fashion and it's not uncommon to see modifications made as the build progresses and local knowledge and skillsets make minor adjustments. They were all skilled tradesmen and fitters who took pride in the ships they built. Many Thames barges are now in private ownership and will have been modified to suit the current owner. Museums usually have beautiful scale replicas but for a sailing model more practical solutions are required and on the water with sails attached the rigging will hardly be noticeable. I am looking forward to seeing your model on the water.

Robbe Smaragd by NPJ Commander   Posted: 9 days ago
Help.............No no no, I do not want to get into competitive sailing. I just wondered how/why most/many people have numbers on their sails and I thought registering the boat was why. As my wife says, I should not think, it only causes trouble. Got enough on with the Tug! All the best to all. NPJ

Thames sailing barge Capricorn by tomarack Commander   Posted: 10 days ago
Clinker boat for Capricorn,and several details.On each barge used to be a dog,as a companion and a cargo guard... Last photo - my ropewalk

Thames sailing barge Capricorn by tomarack Commander   Posted: 10 days ago
I made new little blocks for brails and I added the missing brails for main and mizzen masts.In this photos, the bowsprit is not properly fastened, only put down due to photographing. Last photo - model ready for transport...

Fittings and finishing by RNinMunich Fleet Admiral!   Posted: 11 days ago
Very good! 👍 excellent safety margin! Being an electronics engineer I was somewhat concerned! 😲 Smoking is bad for the health (and the wallet) anyway 😉 Happy sailing with your lovely boat, cheers Doug 😎 Special greetings to 'Mum' for her excellent contributions 👍👍👍

Fittings and finishing by RNinMunich Fleet Admiral!   Posted: 11 days ago
Hi, just noticed your Harbour Post wherein you write "Direct Drive to a MFA Torpedo 850 (2 Blade X Type) Powered by LiPoly (11.1v) 8Amp/h Batteries Controlled Through Viper MARINE (10Amps) ESC" Don't forget to fit a 10 or 15Amp fuse between ESC and motor! Stall current is 40A !!! See pic for Torpedo 850 specs. Oh! And don't forget to take a 'supervising adult' with you on each sailing😉 Have fun, Doug 😎

Brixham trawler IBEX by RNinMunich Fleet Admiral!   Posted: 11 days ago
Maybe bellman, but wouldn't it look a bit daft? 🤔 Hide it under yer raincoat 'til it's in the water 😉 Happy building, and even Happier sailing👍

Brixham trawler IBEX by cenbeth Admiral   Posted: 11 days ago
A detachable bulb keel will result in a more stable sailing experience. The further away the weight is from the centre of buoyancy the better.