Dapol class 73 in trouble [strip down and service video]

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Model Railways Unlimited

Model Railways Unlimited

Күн бұрын

Пікірлер: 58
@clippermuso
@clippermuso Жыл бұрын
I learned so much about methodical troubleshooting in this video. Thanks for taking the time to film snd upload this. Interesting and very informative. I’ve had poor running from both my 73s, but fixed them them by dismantling and cleaning the bogies and bending those pickups. Both run great now and are lovely little locos. All the best, Colin
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Glad it was helpful! Thanks Colin. Yes they seem sweet runners now, I do have an older one. Still not 100% about the motor. Your kind comments are greatly appreciated
@eisenbau
@eisenbau Жыл бұрын
The suppression capacitor is actually on the blanking plate. In this way it is removed when you fit the decoder. You should remove the extra capacitor you fitted, it is not required and could in fact impair suppression as you will have doubled the capacitance.
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Hi, I've just checked this and I had not appreciated that the board was double sided. So yes pins 18/19 do have that cap across them, thanks for the heads up. I'll remove that section of the video
@ed731pdh
@ed731pdh Жыл бұрын
Reminds me of the bad old days of the green grease they used to use, the stuff that eventually degraded to a sticky green mess that gummed everything up. In the end I went over to using ZX1 synthetic grease because the offerings on the market were shall we say not up to spec.
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Agree mate, Bachmann in the 90s used something that turned to hard wax, many of their 08s have come through my works absolutely solid.
@locohauledforum
@locohauledforum Жыл бұрын
@@ModelRailwaysUnlimited I buy a lot of Lima locos, many of which are listed as 'non-runners / spares or repairs'. In the vast majority of cases someone has put grease on the self-lubricating nylon gears and the grease has either gone hard or attracted some stray ballast (or similar) and it's got locked in the mechanism. While it's great for me to buy all these engines cheap, I do wonder how many people have wrecked perfectly good locos because of this weird fixation people have for putting on grease on everything that doesn't need it...
@AllensTrains
@AllensTrains Жыл бұрын
You were lucky the fault was not serious and you did not have to replace the motor! I would suspect the motor may have got degaussed. Thanks for uploading.
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Thanks, that's demagnatised isn't it?
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
@@AllensTrains ah right, yep I remag lots of times :)
@locohauledforum
@locohauledforum Жыл бұрын
Great video. Thanks for putting in the hard work and sharing. 🙂
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Glad it helped cheers
@Shelfandtabletoplayouts00gauge
@Shelfandtabletoplayouts00gauge Жыл бұрын
A comprehensive analysis and strip down Mike, so glad you’re back in the saddle, I’ve had problems with Dapol PCBs before, ended up scrapping the locos as had no clue what to do. Shame because they’re really nice models. All the best and good health, Darren 👋
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Ahw, sad to hear. Thanks for watching
@locohauledforum
@locohauledforum Жыл бұрын
Can you not just skip the PCB's and run the feeds straight to the motor - old school? You might lose functioning lights or whatever, but at least you won't have to scrap the loco. Although that would only apply to DC operation of course...
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
@@locohauledforum the motors feed is almost direct. I get what you say however, a 0.1uf cap and a couple of diodes should be enough lol
@Shauniboy1984
@Shauniboy1984 Жыл бұрын
Hi Mike, glad to see you back. I think there have been quite a few faults reported with these models 😢
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Thanks Shaun, yeah before I ordered it I should have checked lol
@Shauniboy1984
@Shauniboy1984 Жыл бұрын
@@ModelRailwaysUnlimited Dapol models seem a funny bag in the modern era - sort of pot luck if a model is brilliant or terrible, seems to be no midle ground models
@phil36310
@phil36310 Жыл бұрын
Hi Mike, Always very interesting to learn how you tackle these problems. Thanks for sharing your experiences and showing the possible solutions. Generally speaking I have the impression - and proof - that today's 'engineering' is not what it used to be. Minimalism for high priced products. When made in china you get the non existence of Quality Control as an extra worry. Quantity and no quality is the game from bookkeepers and share holders to make max profits. With all the high tech we're just producing more waste. Sad world ! Cheers, filip
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Hi Filip, well I can report the loco is fine now. Agree with what you say about the world
@Night_Ferry
@Night_Ferry Жыл бұрын
Hi Mike, glad you are on the mend. But don't go too mad. Stick something reliable on and just let it run in the background. I picked up a H class without a motor recently for an amazing £44 and have managed to procure a replacement motor from Hornby. Looking into the gear train assembly it looks like someone in China tried to fit a whole jar of Vaseline in there! No wonder the first motor died.
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Hiya, thanks, yeah still under the doc and all sorts of tests done. She's fine now and I'd have put up another video to show it if my software would stop crashing lol. Nice one with the H class, did you see my video about fitting spacers under the worm cover?
@Night_Ferry
@Night_Ferry Жыл бұрын
@@ModelRailwaysUnlimited I did indeed, first place I looked for service information :)
@Chris-BognorRegis
@Chris-BognorRegis Жыл бұрын
Hi Mike - very interesting but way beyond my pay grade sadly. Hope you are both feeling a lot better when you read this.
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Hi Chris, many thanks. Yes it's all sorted now. I still have a battle ahead of me but I'll win
@hotdogpilot6319
@hotdogpilot6319 Жыл бұрын
I was just wondering if the gear tower covers might be a little tight on the worm? However, there's an awful lot of gears in the bogie and as for the pickups....nah. Thanks Mike
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Thanks, I think they may have been stiff due to the grease in them. Thanks for watching
@chrisvaughan159
@chrisvaughan159 Жыл бұрын
Excellent observation Mike. I'll have to get mine out again and give it more of a test. I always thought a cap across the motor was essential to reduce commutator arcing as well as rfi suppression - surely still a legal requirement? Dapol's response will be interesting. Thanks for posting this.
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Cheers Chris. Like you I think it controls arcing, nobody seems to care about rfi these days, as a keen swl that bugs me
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
HI Mike Sorry to hear of the problem. You will need to contact our service agents, DCC Supplies, who handle all our repair work. Not very impressed to be honest
@chrisvaughan159
@chrisvaughan159 Жыл бұрын
@@ModelRailwaysUnlimited Hmmmm, just had a gander at the Ofcom website where I found this "Anyone using electrical apparatus is responsible for ensuring that it does not cause harmful interference to others. If this happens, we may require the user to rectify the situation. Find out about our approach to spectrum enforcement." So it looks like rfi is still covered by a legal requirement. Perhaps Dapol needs to be made aware they are breaking the law by not fitting suppression? Best regards Chris.
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
@@chrisvaughan159 thanks Chris, Hornby are the same. They all think dcc will be fitted that probably does have something. Otherwise Hornby will say the cap should be in the track.
@chrisvaughan159
@chrisvaughan159 Жыл бұрын
@@ModelRailwaysUnlimited Yeah!?!. I was always taught the suppressor should be as close to the source of spark/field collapse as possible (as it was in GPO relay days!), since any intervening wiring (or track) acted as a very efficient antenna. Gone are the days of 405/625 tubes, but as you know, there is plenty of AM still out there! Hoping you feel better soon. All the best Chris.
@paulbache3940
@paulbache3940 Жыл бұрын
Cheers Mike great video, hope your breathing improves soon
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Thanks Paul, yeah me to, had chest x-ray done today so with lick they'll know what to do
@stephendavies6949
@stephendavies6949 Жыл бұрын
Sorry to hear you're still not quite 100% health-wise. Another piece of quality trouble-shooting. Good decision to send your findings to Dapol. Perhaps they - along with many other manufacturers - may now ponder whether using slightly better quality motors would be of mutual benefit to both themselves and their customers.
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Thank you kindly. Had a reply: HI Mike Sorry to hear of the problem. You will need to contact our service agents, DCC Supplies, who handle all our repair work. Not impressed to be honest
@petersmith4455
@petersmith4455 Жыл бұрын
hi there, great video, its just not good enough,i was going to buy one of these but now have cancelled it, will keep my hornby 73,would like to know what Dapol say, questions have to be asked where is quality control ? and should they recall all of them ? look forward to the next video.
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Hi Peter, sorry to hear that. You might get a good one? Dapol have replied and not very well. Said they were sorry to hear about the issues but simply referred me to their service agent dcc supplies. Talk about no responsibility eh
@kellyashfordtrains2642
@kellyashfordtrains2642 Жыл бұрын
I missed you very much. I never service my models as I don't have the skills or tools needed. However, there is one thing I've found I'm good at: repainting a cute little 0-4-0 side-tank engine in Great Western Green Ghost Grey. There's a new ghost train video on my channel, if you'd like to look at it. First you see two photos of the engine before and after the repaint, second comes the running session. I'm sure you'll enjoy it, complete with Spooky Story music playing in the background.😂👻 Boo!
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Thanks, yeah I'm still here. Not everyone can service models but they will all need it at some point. Not sure if Sam still does servicing?
@kellyashfordtrains2642
@kellyashfordtrains2642 Жыл бұрын
@@ModelRailwaysUnlimited He does, but not for other KZbinrs like he used to do.
@NWRJ_WStudios
@NWRJ_WStudios Жыл бұрын
I have a question Mike, do you still want the pictures of the wrenn west country? I can upload it as a video. Cheers Jasper & Willow
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Refresh my memory please?
@NWRJ_WStudios
@NWRJ_WStudios Жыл бұрын
​@@ModelRailwaysUnlimitedSure. You asked me if could you see my wrenn's valve gear, in your wrenn west country repair video.
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Oh yeah I remember. Well I'm sorted here so no panic thanks
@NWRJ_WStudios
@NWRJ_WStudios Жыл бұрын
@@ModelRailwaysUnlimited your welcome ;)
@Dart180
@Dart180 10 ай бұрын
Does anyone know why my 73 runs really slow even on full power?
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited 10 ай бұрын
Oh, is it a Dapol one? Could be the motor about to die, does it get hot?
@modelrailwaynoob
@modelrailwaynoob Жыл бұрын
I have one that behaves badly. It's ok once it's had a long run but nowhere as good as all my old Hornby models.
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
Sorry to hear that. Have you tried anything to fix
@modelrailwaynoob
@modelrailwaynoob Жыл бұрын
@ModelRailwaysUnlimited No I am not that confident with it. It runs but not as well as it should.
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
​@@modelrailwaynoobhi, this video shows what I did to improve mine. You can see the bearing pickup arrangements. You might try some Peco Electrolube on the axels, this will improve conductivity
@modelrailwaynoob
@modelrailwaynoob Жыл бұрын
@@ModelRailwaysUnlimited thank you
@ModelRailwaysUnlimited
@ModelRailwaysUnlimited Жыл бұрын
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