lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on Dec 3, 2020 22:05:48 GMT
I got delivery of the last of the motors today. Excellent deals on all of them, averaging £12.99 on all four. Not bad considering one is usually sold for around £20. I can now continue with the designing of the bogie and the motor subframe. Hopefully the parts will be laser cut in the new year. Really looking forward to fiddling with parts and not pencil and paper or CAD. Looking far ahead, body construction. I'd appreciate some thoughts here.
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jackrae
Elder Statesman
Posts: 1,333
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Post by jackrae on Dec 3, 2020 22:53:22 GMT
What kind of 24v 150w motors are we looking at only £20 each
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Post by delaplume on Dec 4, 2020 0:20:19 GMT
I got delivery of the last of the motors today. Excellent deals on all of them, averaging £12.99 on all four. Not bad considering one is usually sold for around £20. I can now continue with the designing of the bogie and the motor subframe. Hopefully the parts will be laser cut in the new year. Really looking forward to fiddling with parts and not pencil and paper or CAD. Looking far ahead, body construction. I'd appreciate some thoughts here. MDF as main structure with thin sheet metal overlay with etched detail ??..........one piece, detachable body with locating lugs---no need to bolt or screw it down... At least you won't need an expensive sound system ( you could hum I suppose ?? ).. or a smoking exhaust for that matter.....LoL !!
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on Dec 4, 2020 5:44:09 GMT
What kind of 24v 150w motors are we looking at only £20 each E-scooter motors, powerful enough to move an adult at breakneck speed down our pavements. Various wattage motors are available, I've chosen 150w. They are chunky, weight is good and conform to a standard industry size. These ones are fitted for belt drive but they are available for chain drive too.
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on Dec 12, 2020 6:14:22 GMT
Been an emotional week this week, returned to work after 8 months off sick with the lurgey. At home though, the CAD work of the bogie frames are going well. Subframe done, bogie sides done. I'm looking for a laser cutting service, has to be cheap..... Scrub that.... Competitively priced. Any recommendations guys n gals?
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kipford
Statesman
Building a Don Young 5" Gauge Aspinall Class 27
Posts: 566
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Post by kipford on Dec 12, 2020 9:21:58 GMT
Model Engineers Laser. They are in the middle of changing owners, but the new owner is well known in model engineering. Model Engineers LaserDave
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Post by delaplume on Dec 12, 2020 9:56:07 GMT
Spot-on there, Dave---------
Hello Les, Malcom the founder, is one of "us" as is the new owner...So you can rest assured that he speaks the same ME language and understands what you are about.....Just be patient and in the New Year I'm sure he'll welcome your custom.........Tip}--- Make sure any drawings you send are FULLY DETAILED with respect to dimentions as this will save a lot of unnecessary corrective correspondence..
Meanwhile why not have a browse through the current website to get a feel for the service available ??
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Post by silverfox on Dec 12, 2020 10:01:23 GMT
Les
Are you going to do working pans?
please accept apologies if already asked, just read this..... How did i miss it before.....
Looking forward to the build
Edit just seen your etching requirements
My sons friend knows a firm that does superb stuff for 2mm so 5in shouldn't be a problem..will get some details also for castings Owl casting are really good they can work for works drawings as well and send you a 3d copy to make sure everything is ok
Ron
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on Dec 12, 2020 15:24:33 GMT
Les Are you going to do working pans? please accept apologies if already asked, just read this..... How did i miss it before..... Looking forward to the build Edit just seen your etching requirements My sons friend knows a firm that does superb stuff for 2mm so 5in shouldn't be a problem..will get some details also for castings Owl casting are really good they can work for works drawings as well and send you a 3d copy to make sure everything is ok Ron I'm not looking at working pantograph yet.... Emphasis on the yet. It not something I've thought of but in hindsight now..... Damn that'll look cool, even a half extend. I'll make them myself though. I think a couple of jigs are in the making. Cue me daydreaming of a small air compressor pumping up the pantographs
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on Jan 17, 2021 11:44:54 GMT
I got delivery of the last of the motors today. Excellent deals on all of them, averaging £12.99 on all four. Not bad considering one is usually sold for around £20. I can now continue with the designing of the bogie and the motor subframe. Hopefully the parts will be laser cut in the new year. Really looking forward to fiddling with parts and not pencil and paper or CAD. Looking far ahead, body construction. I'd appreciate some thoughts here. MDF as main structure with thin sheet metal overlay with etched detail ??..........one piece, detachable body with locating lugs---no need to bolt or screw it down... At least you won't need an expensive sound system ( you could hum I suppose ?? ).. or a smoking exhaust for that matter.....LoL !! Not sure about humming but would a tidy car stereo playing Black Sabbath be acceptable?
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on Jan 17, 2021 11:52:07 GMT
CAD is almost finished, just a few problems that were sorted out by using roller and ball bearings throughout. Mainly on the motor subframes as they have the main axles going through them. Difficult to oil without removing the body. Plus, I'm against free flinging oil too so sealed bearing seem best. The question I'd like to pose is does anyone have experience with Chinese speed controllers? . I've found a 60amp one on Joom plus it's a brushed one too. Tidy price too a 21 sovs.
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Post by andyhigham on Jan 17, 2021 12:12:00 GMT
Not sure about humming but would a tidy car stereo playing Black Sabbath be acceptable? Absolutely, especially dare I say Ronnie James Dio era
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Post by delaplume on Jan 17, 2021 12:41:07 GMT
Quote}---"Not sure about humming but would a tidy car stereo playing Black Sabbath be acceptable? "..........Well a Class 76 at approx 89 tons weight might be "Heavy metal".......and you could say}---"Rock-on, Tommy" I suppose......and you do have a certain Ozzy Osbourne look about you----LoL !!
But is that just me being "Paranoid" ??.........call me Marvin,maybe ??
yes, thumbs-up to sealed bearings !!.........
Controllers ??...I'd stick with 4QD products......time-proven and very helpful with any tech questions etc....plus just down the road accessibility...
I have used the DNO 10 controller coupled with their Hand control box for many years now with no probs at all........The DNO 10 operates at 12 to 24 volts at 100 Amps max and 60 Amps continuous with built-in re-gen braking and adjustable acceleration and braking rates.....The hand control box employs a form of "Dead man's handle" ie }--- when you let go the loco comes to a halt, so no chance of it running away out of control if you should drop it.. .......Also, it uses a Din plug and wander lead to connect to the loco...once removed the loco cannot be driven by someone else...
Just a thought--- so far the various Federations and Insurance people have been concerned only with steam safety eg Boiler construction and use regs. etc and nothing regarding the same for Battery electric....As an Ex-BR driver I thought that you'd appreciate the benefits of a Dead Man's device--even in these smaller scales ??
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on Jan 17, 2021 12:45:42 GMT
I whole heartedly agree with the dead man, even if it's a stereo plug on a lead that pops out when you depart.
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Post by andyhigham on Jan 17, 2021 12:53:14 GMT
The Mtroniks controller has a jack plug "dead man" which can be attached to a wrist strap or to the carriages. The Mtroniks also has a rotary speed control knob with "coast" in the middle, "throttle" clockwise and "brake" anti clockwise
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Post by andyhigham on Jan 17, 2021 13:00:11 GMT
As an aside Black Sabbath invented heavy metal music. It was the sound of heavy engineering in the midlands that inspired Tony Iommi who was working in a factory in Birmingham. Incidently he lost the ends of two fingers on his right hand working in the factory, he plays the guitar left handed with prosthetic finger tips
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don9f
Statesman
Les Warnett 9F, Martin Evans “Jinty”, a part built “Austin 7” and now a part built Springbok B1.
Posts: 960
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Post by don9f on Jan 17, 2021 13:26:27 GMT
The question I'd like to pose is does anyone have experience with Chinese speed controllers? . I've found a 60amp one on Joom plus it's a brushed one too. Tidy price too a 21 sovs. I have used many different Chinese electronic speed controllers in model aircraft, multicopters etc. but these were all with brushless motors and controlled by PWM inputs etc. The biggest was a 150A one and I can’t say I ever had any problems with any of them over the years, so that might be of relevance? Personally I would go with one of the controllers purpose made for locomotives, like has been said above they have other useful features such as acceleration/deceleration ramp rates, optional reduced speed in reverse, regen. braking etc. I once witnessed a model of a 47 running away on its own with the owner desperately trying to catch it up, obviously with the potential for a serious accident, although thankfully someone managed to stop it. The bit that was funny was how it dragged its hand controller behind it (obviously one with no deadman’s feature), but that it was repeatedly catching the horn switch on the ground and sounding its own horns in distress! One final “observation” about the 4QD system that happened to mine, plus one other at our Railway, is that if someone is not careful in orientating the handcontroller DIN plug properly when inserting it “live” (got inadvertently pulled out whilst in motion resulting in an emergency stop), it is possible to blow the on-board fuse that protects the handcontroller circuit. This then has to be repaired by dismantling/soldering etc. Other than that, I have had no problems at all. Cheers Don
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Post by delaplume on Jan 17, 2021 13:34:19 GMT
Your's truly at a Leyland Club "English Electric" day a few years ago-----I'm driving my 5 inch Class 20 with a 7.25 inch gauge "20" next to me..........and yes, there are sandwiches in my snap bag --LoL !!
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Post by delaplume on Jan 17, 2021 13:45:48 GMT
Hi Don---Yes, that's very true re}--- Pin alignment....Before first ever use of the loco I connected the plug and socket then put an engineers yellow paint line across the two for ease of orientation.....Also, when assembling at the track site plug the two together first BEFORE connecting any batteries........This will allow you to gently "feel" for correct alignment without any power in the circuit....Once you've done it a few times it becomes second nature.... That re-gen braking really does work--- I hardly ever have to use the driving truck brakes when out on the main line.... Here's my Class 52 Western Champion being re-wired for twin-engine start up and twin smoke.......notice the yellow alignment mark and also the 5-light led battery condition indicator on the control handle....
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Post by andyhigham on Jan 17, 2021 14:13:41 GMT
Your's truly at a Leyland Club "English Electric" day a few years ago-----I'm driving my 5 inch Class 20 with a 7.25 inch gauge "20" next to me..........and yes, there are sandwiches in my snap bag --LoL !! Alan, were you at Leyland chairman's day 12 months ago? That 20 looks familiar
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