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    neilmc
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    Member No.#1461
    RegisteredπŸ“…12th Jul 2011
    Last OnlineπŸ“…13th Jul 2020
    CityπŸ“Fareham Hants
    CountryπŸ‡¬πŸ‡§United Kingdom
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    PostsπŸ’¬148
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    πŸ‡¬πŸ‡§ Scratchbuilder ( Midshipman)
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    Recent Activity
    Liked Promotion 1 day ago
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    Liked Adding more detail.... 23 days ago
    Liked A Little Advice on Motor Whine 25 days ago
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    Liked A Little Advice on Motor Whine 28 days ago
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    Learning so much more with each reply to my posts. One day I may have a boat in the water πŸ€”
    Members Harbour
    (Fire Boat) RAF Fire Boat
    Long ongoing restoration which started off good but then came across problem with motor and shaft set up which has left the project in my garage untouched for almost 4 years (Motor: Graupaner 600 Speed) (ESC: Ripmax) (3/10)
    Recent Posts
    πŸ“ Promotion
    13 hours ago by neilmc ( Chief Petty Officer 1st Class)
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    No luckily πŸ˜‚πŸ˜‚πŸ˜‚πŸ˜‚
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    πŸ“ Promotion
    1 day ago by neilmc ( Chief Petty Officer 1st Class)
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    Good to see photos of submariners being used as an example of scrambled egg.. well on one of them.
    Both of them I served with πŸ‘
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    πŸ’¬ Re: More detailing....
    25 days ago by neilmc ( Chief Petty Officer 1st Class)
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    Happy birthday for tomorrow hope its one filled with a couple of beers😊
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    πŸ“ A Little Advice on Motor Whine
    28 days ago by neilmc ( Chief Petty Officer 1st Class)
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    I've followed several suggestions Rowen and all have proved the whine remains no matter what. I thought it was an issue as the brushed motor I had before did the same sort of thing. It did however prove to be a badly misaligned installation from previous owner. So I've chased a problem based on rhis fact to one that wasn't really there however removing the old mount it has shown anorher misalignment. So good in one sense just need solve it now with the new mount 😊
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    πŸ“ A Little Advice on Motor Whine
    28 days ago by neilmc ( Chief Petty Officer 1st Class)
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    Slow and steady ... 15 years is definitely slow Martin πŸ˜€
    Although working through lockdown it has focused the mind on how distracting life was beforehand.
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    πŸ’¬ Re: Priming the Hull and assembling the battery tray & servo mount.
    28 days ago by neilmc ( Chief Petty Officer 1st Class)
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    Well thats another couple of photos for my 'how to do it' album another excellent update on fantastic build blog.
    Can the futaba servo be used with a digital transmitter?
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    πŸ“ Turnigy i6S Transmiter Modes/Spring loaded sticks
    28 days ago by neilmc ( Chief Petty Officer 1st Class)
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    Hi Ian
    Thanks for links and for some reason the manual is more informative than the one that came with the transmitter.
    Also note there's a firmware update available for mine but I'd better learn how to use it before messing around with that 🀣
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    πŸ“ A Little Advice on Motor Whine
    28 days ago by neilmc ( Chief Petty Officer 1st Class)
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    Hi Martin
    I think its a combination of my inexperience when I reinstalled the shaft as the glue had perished on the previous one. This now makes things all a little bit tight as I think the shaft is too far in the boat if you know what I mean see photo. Also the brushless motor xmount is a bit to small for the motor mount front plate see photo. I do like the idea of the mount and I'm thinking of trying to remake the front part of the mount. Well I would if I could find the countersink screws for the x mount πŸ˜‚
    Ian the whole alignment and installation of the motor has been a nightmare not only for me but everyone else on this site .... now you as well πŸ˜‚πŸ˜‚
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    πŸ“ A Little Advice on Motor Whine
    28 days ago by neilmc ( Chief Petty Officer 1st Class)
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    Well motor mount from SLEC turned Friday not bad for a tenner and delivered in 3 days. As it looks better then the 'wing it mount I put together and the issues its causing I decided to change it.
    Wasn't looking forward to it as I couldn't remember how much glue I had used to stick the supports to hull. Didn't matter as I obviously can't mix araldite as the supports just popped off. I was then left with what looked like toffee which easily came off.
    When using the SLEC mount as designed it proved to be too high and didn't align at all with the shaft. Also couldn't find the countersink screws for the x mount so thought I'd adapt it a little.....winging it again.
    It did however show what could have caused some of the problems as when using the alignment coupling it shows the shaft to be installed at an angle as per photo. So I'm going to give it a go using the motor mount I used before but fix it this time with nyloc's so hopefully providing a more sound solution.
    I shall use a bit of servo tape as Ian suggests to isolate it a little.
    Fingers crossed this time.🀞
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    πŸ“ Friends
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Thats great news Rick 😊
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    πŸ“ Motor and Esc Wiring
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Martin the video from HobbyKing is ideal and I'll be doing that this weekend such an easy fix so thank you.

    JB I'm not sure whether my ESC is autocalibtrating so I'll check at the same time as changing over the motor wires and a mode change on the TX. Busy times and learning for this novice this weekend.

    JB I've put a photo of my setup hope this answer your question on what type of ESC.

    Cheers guys much appreciated
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    πŸ“ Turnigy i6S Transmiter Modes/Spring loaded sticks
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Hi all thank you for the advice and the videos which have helped my decision massively and that is learn how to use the throttle with my left thumb as suggested by JB
    I really appreciate the help but it does look a little ooppss thats broken now.... for me anyway 😁
    My transmitter apparently is something not seen before as a i6s so I think best to leave alone at this point.
    Thank you so much guys.
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    πŸ“ A Little Advice on Motor Whine
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Hi Martin
    That is it exactly the same sound except no low notes as Robbob pointed out which also tie in with your soundbox theory. I've hopefully got a new mount coming so will have a look this weekend with the home I didn't use loads of epoxy on the 'wing it' mount I put together.
    Ah ah thread lock that'll be missing then on my prop πŸ˜‚πŸ˜‚
    Cheers Neil
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    πŸ“ Motor and Esc Wiring
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    So Jacko do I just keep swapping two of the three wires until I get what I want hopefully without causing a load of smoke πŸ˜‚πŸ˜‚
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    πŸ“ Turnigy i6S Transmiter Modes/Spring loaded sticks
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Heres another one😁
    Again during fiddling with my whinny motor I noticed the Transmitter controls are spring loaded on all stick positions except the left hand up/down stick which I have as throttle.
    Not a problem I'll become left handed and change the throttle to the right stick (spring-loaded return) and rudder to the left stick. I can do this after watching video posted the other night about RC Basics which touched on different modes.
    My TX is selectable between modes 1 to 4 and currently in Mode 1. Easy just change the modes right...... Mode 2 not what I wanted so went to Mode 3 and 4 but still not what I wanted so now back in Mode 1.
    After the above Jackanory am I doing something wrong again or is there anything I can do?
    It just seems weird that the throttle isn't spring loaded but the others are.
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    πŸ“ Motor and Esc Wiring
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Here we go a little more torture for you guys😁
    During the fiddling with my whinny motor I noticed the motor went faster astern than it did going ahead. Can't be right surely so a piece of paper near the prop proved me right as the paper didn't move until it was going astern. So I reversed the channel on the TX and the paper moved when when going ahead...which I believe is right?
    This obviously means I've managed to wire up the motor and Esc incorrectly. So silly question time.......how do you know which wire goes to which when they are all different colours is it simply trial and error or am I completely thick?
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    πŸ“ SEA COMANDER RE-FURB.
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Wow Colin that looks amazing and nicely varnished a job really well done.
    I'll be watching in anticipation when you start putting the electrics in thats for sure.
    Neil
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    πŸ“ A Little Advice on Motor Whine
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    View Video
    So this one is for Martin555 to eliminate any issues with alignment i think was the idea. I believe it could be OK as the motor sounds the same in this video as well.
    I could be wrong as after watching the videos a few times now the motor sounds exactly the same πŸ˜‚πŸ˜‚.
    Any thoughts guys
    Motor Coupling Removed and Dry Test
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    πŸ“ A Little Advice on Motor Whine
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    View Video
    Car service day and day off so only seemed right to have a splash around in the bath πŸ˜‚
    Before I went started videoing I decided to see what it was like going forwards and back which to be honest bought a smile to my face. Well until the prop fell off!!!!!! I love this boat.......not
    Anyway screwed it back on but not sure why it came off and I know I'll have an answer soon so no panicπŸ‘
    Next to video the action and results are at the link. To be honest I don't believe it was at full throttle as I stopped when the bath started bubbling and the boat was trying to get out πŸ˜†. There's some power behind that little motor and the water pick up works πŸ˜‚πŸ˜‚πŸ˜‚
    It does sound a little better but I think the vibration and low tones are still there - what do you think guys?
    Motor Now in Water
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    πŸ“ Friends
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Hi Rick
    Although the news you received was stressful you did the right thing by phoning and letting your friend know someone is there. Its amazing how a phone call to hear someone's voice and a quick catch up can lift peoples spirit.
    I live 200 miles from my 84 year old father and call every night to check in and its worth it as you can hear and judge any changes which you then act on if needed.
    Keep doing what your doing buddy
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    πŸ“ A Little Advice on Motor Whine
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    There's really good stuff on the krick website much better than in the UK I would say so thanks for pointing it out. The minimum could be a COVID thing as they charge delivery on top I think.
    Had a look at the battery and there's a black dot by the 3 cells 11.1v so presuming its a 3s and not a 2s although the 2.2 is confusing πŸ™„. So hopefully I'm good to go and standby for another set of questions on the transmitter got three so far to torture you all withπŸ˜†
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    πŸ“ A Little Advice on Motor Whine
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Doug on the photo of the motor with the silver Hull being nosey whats the circuit bread board for ?
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    πŸ“ A Little Advice on Motor Whine
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Regarding my present mount which as you say could be salvageable I contacted SLEC to enquire on price for the same type as Robbobs. They came back at £11.45 delivered which is laser cut for their version of the Crash Tender. Not spending much in lockdown just work home work so ordered it this afternoon 😊.
    Will post photos when it turns up.
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    πŸ“ A Little Advice on Motor Whine
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Hi Doug thanks for all the links and I've had a look see but the minimum buy is 20euros which doesn't touch the coupling and mount - bummer.
    On your post 'that motor should have enough reserve for your boat at more reasonable speed' does this mean the motor I have is OK for what I need?
    Also included a photo of my bits πŸ˜‚ which seems pretty much all the gear no ideaπŸ˜‰
    I've also ordered a set of feeler guages just to check the clearance which with 5 to 10 thou I maybe able to use the same coupling as the one Robbob uses
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    πŸ“ A Little Advice on Motor Whine
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Hi both quick update just phoned SLEC to see how much they could make one for. As you know they sell the Crash Tender so worth an ask I thought. Also gave a shout out for the forum and your current blog - Robbob.
    If its too expensive I love the idea of the Krick mount which with a bit of winging it I reckon I could make one of those 😁
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    πŸ“ A Little Advice on Motor Whine
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Robbob can you buy these or did you make it being the extremely clever chap you are? You blow me away with the level of attention to detail you include in your builds.
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    πŸ“ A Little Advice on Motor Whine
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Cheers Colin and Robbob liking the suggestions made and I'm now thinking before diving in and it taking apart to do the easy tests as suggested.
    Once the coupling is off then test the mount and base for stability and check with shaft alignment tool.
    If not looking then to go searching on how best to make a better engine mount platform.
    Any one got any pictures 🀞
    Thanks Neil 😊
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    πŸ“ A Little Advice on Motor Whine
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    So I've been mulling over the whole fiddling analogy from Robbob and I reckon you've nailed it.
    On looking tonight the engine mount is not really a mount at all more of a float as can be seen in the photo. When I made the mount it seemed a really good idea to glue some supports to the hull and then place and screw the angled mount onto them. Could there a possibility that the resonance is from the motor not being properly supported and the space under it is acting like a sound chamber. As the supports do not fill the whole space under the actual mount.
    With all this in mind and me having no real clue what I'm doing how do I make a mount that would actually do the job?
    One step forwards and twelve steps back anyone want a new project πŸ˜†πŸ˜†
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    πŸ“ A Little Advice on Motor Whine
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Loads of excellent advice as always and I'm a much happier now. I was thinking it could have been a case of using Dougs famous Mole Grip twist and pull method on the shaft tube again 😁
    So from what I'm getting its a resonance issue which if I turn it into a violin it'll go away πŸ˜‚
    But first off to try it in the bath no pond though as it is literally a hull with no deck at all πŸ™„. Then disconnect the coupling to see if the sound is related to the motor / mounting arrangements which may be dampened with a piece of rubber but realignment would be needed.
    I purchased a flexible rubber coupling I think on your advice Robbob but it was longer than to UV type coupling and so prevented any free play in the shaft. It does look more of sturdy type coupling so did think of hacking a bit off the motor shaft as it is quite long or drilling out inside the coupling at the motor end. Thinking it will give some free play back. I really don't want to move the motor back if I can help it as it looks OK at present.
    Thanks for all the help and will update tonight after work if I have time otherwise could be midweek.
    Cheers Neil
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    πŸ“ A Little Advice on Motor Whine
    1 month ago by neilmc ( Chief Petty Officer 1st Class)
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    Hi all hope you are all safe?

    I'm starting to get back into my Crash Tender restoration and have spent the weekend making sure the motor is aligned which I think is pretty good. Please see pictures.

    Once happy I connected it all up added a some grease in the shaft tube and free play to about 1mm and set it spinning. To be honest I was a little disappointed to hear a high pitch whine. I naturally thought I would get a nice quiet motor instead the whine sounds like the motor is binding and possibly under extra load. I've never had a brushless motor but the last can motor did the same. The shaft tube is completely new and was refitted with great help from key members of this site. I don't know if what the video shows is right or not.

    Any suggestions and or advice guys?

    Thanks Neil
    7 June 2020
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