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>> Home > Tags > bearings

bearings
bearing
bearings
Wild Duck Sailboat article by RNinMunich Fleet Admiral!   Posted: 6 days ago
Mornin' John, Hows things 'Ol Mate'😉 Basically on a PC the 'Photos' App built into Windows 10 should do the job. Pic shows the opening window displaying the last photos I downloaded / Stored. i haven't experimented much with it yet but it should find any photos / pics on any drive, stick or memory card on your PC. If you are using a Smartphone I don't know, although most seem to have a 'Gallery' function built in! It will depend on which phone you have and which operating system it uses. Best thing to do there is look at the Apps already installed or in the Google or Microsoft App Stores. More later when I've fiddled with the 'Photos' App a bit more. Better shift to a new thread then as well, afore we're arrested for hijacking😲 (again😁)! At the moment I'm putting the finishing touches to Colin's Taycol Supermarine. Just reassembled it with new bearings and ran some tests using my prototype converter board. Runs fore and aft perfectly on a normal brushed ESC.😊 Will update the 'Supermarine Resurrection' blog shortly. All the best, Doug 😎

Wild Duck Sailboat article by RNinMunich Fleet Admiral!   Posted: 13 days ago
Many thanks for the Snowberry tip John 👍 It's now your fault the Supermarine rebuild is delayed at least six months 😁😁😁 Actually although I have looked at several relevant build articles (without conversions to other navies configurations) I have done a bit on the rebuild. The new bearings have arrived and I've just arranged the fitting in one end plate. 😉 More soon, Cheers, Doug 😎

Neptun by Ron Fleet Admiral!   Posted: 30 days ago
[Score: 5/10] 36" Neptun Single Propellor (3 Blade) Geared Powered by NiMH (7.2v) Batteries - Comments: Under construction is this old kit recently given to me after sitting on the shelf for close to 15 years. No plans, no deck fittings, and other parts missing too. It needed a new speed control, motor with geared reduction, battery and the prop shaft bearings were seized requiring several hours of removal and replacement.

Rebuild starts by MouldBuilder Captain   Posted: 30 days ago
Thanks Doug. Finally made a decision and bought the Raboesch RAB301-09 shaft with ball bearings. It comes in at 450mm but can be reduced to the required 350mm of tube length.😉

Rudders and Propellers by RNinMunich Fleet Admiral!   Posted: 1 month ago
BTW; I copied your above massive text block into a document file and split it up into paragraphs so I could see where you're at! My conclusion: so far so good BUT! You made the one classic mistake of many model boat / ship builders 🤔 You continued the prop shaft tube right back to the propeller and hence you had to make oversize struts to support them. This is fundamental wrong and creates unnecessary work.😉 On real ships, including the Schnellboote, the so called 'stuffing tube' is JUST THAT, it 'stuffs' the shaft through the hull and includes stuffing glands to prevent the ingress of sea water. Outside the hull ONLY the rotating shaft itself continues on through the bearing in the support strut and to the prop. See attached pics of my HMS Belfast as an example. There was actually no reason for you to make oversize strut bearings, simply bushes to match your prop SHAFT not the tube would have been correct. Inside the real ship there is also NO TUBE, only bearings at suitable intervals. They look like gigantic versions of the big ends in your car. Imagine on really big ships, carriers, container ships, bulk tankers etc, with shaft diameters of 1metre or so how big the 'tube' would be, how much weight that would add and how difficult it would be to service and maintain! I've often noticed in posts here that folk confuse shaft and tube, often referring to the whole assembly as 'the shaft'. For convenience we modellers use prop tubes, who wants to fiddle about making a row of internal shaft bearings no one will ever see and will most likely never be really concentric? The downside is that continuing this 'convenience' outside the hull is wrong, adds weight and detracts from the scale appearance of the model. 😭 OK, it's 3am here now so - orf me 'obby 'orse and up (in my case down!) the wooden stairs to Bedfordshire, G'night all, cheers, Doug😎 Re shaft length: What fits fits, what don't don't! Such a question is like asking 'How long is a piece of string?'! If all three motors abreast won't fit you have to decide if the central motor should / will fit fore or aft of the outer motors. Then measure / adjust the shaft length accordingly. Before you start fitting the centre motor check what length shafts are commercially available and adjust your motor fit to suit. Otherwise make your own shafts and tubes to fit as required, as I've started doing cos I got fed up with 'standard sizes' wot don' wanna fit my ship. 🤔 G'night All, cheers, Doug 😎

Rebuild starts by RNinMunich Fleet Admiral!   Posted: 2 months ago
I agree Colin, only I used a mini gas torch on it's smallest flame, with a damp cloth between the tube and boat and the flame angled away from the boat! twisted with mole grips and a sharp tap on the end with a tack hammer. Nothing too heavy!😲 Peter; take a butchers in the Raboesch catalogue for shaft tubes with real bearings. Sold by Cornwall Model boats and others. Otherwise knock the old bearings out using the old shaft and make / buy new bushes. Preferably sintered phosphor-bronze. The sintered metal absorbs and traps oil 😊 Cheers, Doug 😎

Rebuild starts by Colin H. Fleet Admiral!   Posted: 2 months ago
Is it possible to fit new bearings in the existing shaft tube, if not I have managed to get old shafts out by carefully heating the tube using a soldering iron inserted into the end and as it heats up applying rotational force gently back and forth until the the glue gives way. This has worked for me on wooden hulls. Cheers Colin.

Rebuild starts by MouldBuilder Captain   Posted: 2 months ago
I was hoping to get some help. I am considering changing the prop shaft for a much stronger one. I am concerned that the existing 35 year old unit with plastic bearings might not stand up well to the new 1485 motor running at 22,000 rpm potentially, I think.🤓 Is there a method to removing old shafts without damaging the hull. If this is thought to be a viable proposition, please could I have recommendations for a 13" shaft with suitable bearings. Thanks. Peter.😉

BRAVE BORDERER by jbkiwi Sub-Lieutenant   Posted: 2 months ago
I've used small brass shafts in brass bushed tubes with oilers in my MTB and they've lasted for 20yrs of average use, although they get a bit noisy when short of oil. Best would be brass shafts in brass tubes with Teflon/Nylon/ bronze etc bushes (a center bush as well if poss - have used these in ic power boats for years with hard steel shafts for the power). Brass is good as it's self lubricating to a degree and with a good quality oil can run quite smoothly and quietly, and is very simple, and when looked after won't corrode like steel or miniature ball or roller bearings (unless stainless).

Taycol Supemarine Resurrection by Colin H. Fleet Admiral!   Posted: 2 months ago
Look on ebay. Oilite bearings. Sorry for the mistake in the spelling, fingers bigger than the keys. Cheers Colin

Taycol Supemarine Resurrection by RNinMunich Fleet Admiral!   Posted: 2 months ago
Hi Martin, Colin's Supermarine doesn't have a pressed brass cap. On the inside of the Paxolin frame end plates are two circular paxolin plates, on the out side a plastic (?) holder for the felt oiler pad. The whole shemozzle held together with 4 brass nuts n bolts. The slop in the paxolin plates is somewhere between 1/64" and 1/32" so I reckon it's worth fitting some decent bearings. I'm going to try and hide 'em inside the paxolin and plastic parts to preserve the 'vintage look'. Wish me luck! Cheers, Doug.

Taycol Supemarine Resurrection by Westquay Fleet Admiral!   Posted: 2 months ago
My mate said it as Chrodite, with narey a hint of a pause, so I just assumed he knew what it was. I think it's effectively Admiralty brass, more or less. Not quite bronze, which is BLOODY hard! But ace bearing material. Goes brown but doesn't corrode further. He made hundreds of his own bolts from it, but had to sell the boat before he finished it. Bearings for a Supermarine? Mine has its original stuff, Just the end plates of Paxolin with felt oil pads held on with a pressed brass cap. It's worked all these years and there's not a thou. of slop. Amazing. I suppose though, mine never really got a lot of use in the few years I used it. Only odd weekends for as long as a pair of lantern batteries would last. Maybe 10 minutes each! Anyway, if it gets another working, great news. I'd like to see Colin's fleet of old codgers. I'd feel right at home Mind you, I sent off for a brushless ESC today and will have to get some batteries soon to test the motor. Its a tiddler, but it's 174 watts, so should work. Worth a try anyway as it cost me nowt. Martin

Taycol Supemarine Resurrection by RNinMunich Fleet Admiral!   Posted: 2 months ago
Thanks Martin👍 Funny thing is I can't find any reference to such a metal anywhere! Are you sure it's not ChroMite? Anyway; I'm sure it will make superb bearings for a Supermarine😊 Cheers, Doug 😎

Taycol Supemarine Resurrection by Westquay Fleet Admiral!   Posted: 2 months ago
Chrodite!! Blimey I thought I would never meet another person who knew that word. My friend had a load to make fixings for his tiny, but lovely Crouch sloop White Mouse. He gave me what he had left and I'm down to about a foot left, so that goes towards making prop shaft bearings, so, Doug, you've actually got a wee bit already. Martin

Taycol Supemarine Resurrection by RNinMunich Fleet Admiral!   Posted: 2 months ago
Evenin' Colin, Thanks for the offer. I'm going to use some stuff the Martin sent me, called Chrodite apparently, although I can't find any description or reference to Chrodite anywhere! Looks like brass with an extra ration of tin. Supposedly harder wearing. Anyway, stator and frame spacers etc are now finished.👍 So after feeding the inner man I'll start measuring up for the bushes and see what I can do about tidying up the drive shafts. Have just sorted out a 'Live Centre' for the mini lathe which should help. I want to hide the bushes inside the original Paxolin cards and the external end plates which contain the felt oiling pad. So ball races are out of the question unfortunately; too large diameter and too thick 🤔 Needle roller bearings would be nice, but I ain't got none that small😭 (Nah, admit it Doug you ain't got none at all, they're way too expensive😭) Amused myself today polishing up all the brass nuts and bolts! Confucius he say "Polishing nuts - very painful" 😁 Weather should be good for spraying tomorrow so I might fire up the compressor and give my PTB a blast of Pacific Green. 😊 Cheers All, Doug 😎 BTW: where are the pics of your Avanti? Harbour posts without pics are pretty dead 🤔 Cheers, Doug 😎 Oops! This doesn't belong here!🤔