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 Diesel 4

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GWhizz




PostSubject: Re: Diesel 4   Sat Mar 16, 2013 9:20 pm

David Grantham wrote:
Carl, do you think that helical gears would help quieten the noise you were getting between a clutchless nitro and the BLDC ?

Don't know about availability, in which case the question may be academic.

Helical gears are available from L'Octant (sorry no web page- catalogue only) but a bit pricey affraid
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Tacbob



Location : Harz, Germany

PostSubject: Re: Diesel 4   Wed Mar 20, 2013 6:35 pm

Hi Carl,

Is your exhaust box soft or silver soldered?

_________________
Lorenz
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Carl Hibbs
Admin


Location : Haute Normandie - visitors welcome

PostSubject: Re: Diesel 4   Wed Mar 20, 2013 7:55 pm

Lorenz my zinc exhaust box is solft soldered.

Because my silver soldering is abysmal and also it doesn't really need it as the engine temperature is only at around boiling.

Silver soldering is better of course but more expensive plus zinc would deform badly and even melt at those temperatures.
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Tacbob



Location : Harz, Germany

PostSubject: Re: Diesel 4   Thu Mar 21, 2013 5:56 pm

Thanks Carl Smile.

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Lorenz
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dewintondave



Location : New Zealand

PostSubject: Re: Diesel 4   Fri Mar 22, 2013 6:24 am

I do like your single channel arrangement, that's an elegant solution.
Best wishes,
Dave.

Carl Hibbs wrote:
I've now connected up the single channel servo control.



Throttle closed, servo arm in the centre position, wiper contacts in dead portion of PCB. No contact between rectifier output and traction motor.
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Tacbob



Location : Harz, Germany

PostSubject: Re: Diesel 4   Fri Mar 22, 2013 6:59 pm

Hi Carl,

What is the size of the zinc sheets you're using when you bis it? Do you have a good trader?

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Lorenz
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Tacbob



Location : Harz, Germany

PostSubject: Re: Diesel 4   Thu Mar 28, 2013 4:21 pm

Tacbob wrote:
Hi Carl,

What is the size of the zinc sheets you're using when you bis it? Do you have a good trader?

Carl?

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Lorenz
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Carl Hibbs
Admin


Location : Haute Normandie - visitors welcome

PostSubject: Re: Diesel 4   Thu Mar 28, 2013 7:36 pm

Sorry Lorenz I missed this one as I was at Ferrovi'art.

I get the zinc from Brico Depot but any roofing suppliers should stock it.

Zinc sheet

It is 2 metres x 1 metre and 0,65mm thick, costs about 50 euros and lasts for ages!

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Tacbob



Location : Harz, Germany

PostSubject: Re: Diesel 4   Thu Mar 28, 2013 8:16 pm

No problem Carl Smile . Thanks for the Info. I found a trader in the www where the 2qm of Titan Zinc in 0.7mm thickness cost about 20 Eu. With 1mm it costs about 30. Still figuring out the shipping costs.
What is the weight of your 2qm?

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Lorenz
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Tacbob



Location : Harz, Germany

PostSubject: Re: Diesel 4   Sun Mar 31, 2013 5:21 pm

Tacbob wrote:
No problem Carl Smile . Thanks for the Info. I found a trader in the www where the 2qm of Titan Zinc in 0.7mm thickness cost about 20 Eu. With 1mm it costs about 30. Still figuring out the shipping costs.
What is the weight of your 2qm?

Carl? (Hope I don't bother you, again Embarassed)

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Lorenz
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Carl Hibbs
Admin


Location : Haute Normandie - visitors welcome

PostSubject: Re: Diesel 4   Sun Mar 31, 2013 5:58 pm

It's not a bother. I'm interested in the fact that you can get 1mm zinc. Who is the supplier?
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Tacbob



Location : Harz, Germany

PostSubject: Re: Diesel 4   Sun Mar 31, 2013 6:04 pm

Do you know the weight of your 2qm sheet?

Here is the supplier:

zinc sheets

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Lorenz
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Carl Hibbs
Admin


Location : Haute Normandie - visitors welcome

PostSubject: Re: Diesel 4   Sun Mar 31, 2013 6:16 pm

No, I don't know how heavy it was I'm afraid. I've used over half of it now so it will be difficult to weigh accurately.

I do know that it is difficult to keep flat and handle without kinking.
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Tacbob



Location : Harz, Germany

PostSubject: Re: Diesel 4   Sun Mar 31, 2013 6:24 pm

Carl Hibbs wrote:
...

I do know that it is difficult to keep flat and handle without kinking.

That's why I'm not sure if ordering and shipping would be the deal.

_________________
Lorenz
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Carl Hibbs
Admin


Location : Haute Normandie - visitors welcome

PostSubject: Re: Diesel 4   Sun Apr 14, 2013 5:34 pm

Getting ready for the big show.

Painted in red. This paint is from Tamiya and supposed to be fuel proof. Unfortunately it reacted a bit with the primer I used so not the best paint job in the world. It's going to get bashed around soon anyway and this is only a temporary body.







I moved one set of steps and painted the buffer beams black. I might even paint the whole underframe black yet.

So for the CFBS we could have 7 diesels; 4 of mine, Van's, Troy's 'Mad Max-Duel' and Brian's work in progress.

Apart from Wada's and Jerry Hyde's I don't think there are 7 other working diesels in the whole of the world.
If there are then they should come to St Valery sur Somme on April 27/28. Laughing

The diesel parade is certainly not going to be a beauty contest. Evil or Very Mad




Last edited by Carl Hibbs on Sun May 05, 2013 11:29 am; edited 6 times in total
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Tacbob



Location : Harz, Germany

PostSubject: Re: Diesel 4   Sun Apr 14, 2013 5:41 pm

Interesting color choice. Will be a eyecatcher I think. Is the body the same as the black one?

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Lorenz
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Carl Hibbs
Admin


Location : Haute Normandie - visitors welcome

PostSubject: Re: Diesel 4   Sun Apr 14, 2013 5:47 pm

Tacbob wrote:
Interesting color choice. Will be a eyecatcher I think. Is the body the same as the black one?

The colour is fairly prototypical:
Locotracteur CFD No.62

The body is not the same as the 'black one'.
That one is made from brass, this one is from wobbly zinc.
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Carl Hibbs
Admin


Location : Haute Normandie - visitors welcome

PostSubject: Re: Diesel 4   Thu May 09, 2013 6:51 pm

After a bit of a delay and some improvements/modifications having trialled Van's diesel at expos it was time for track testing.

Now with silver soldered exhaust (don't look too closely). For Lorenz I fitted the exhaust pipe with flapping cap (does anyone know what the correct name is for it...?).

I just need to lower the idle speed a tad and maybe lean out the mixture a bit when it's run in.
I'm running 10% fuel which is very oily and high consumption.



So if anyone is coming to Neully Vap'Eure in 2 weeks you'll see both Baguleys running together hopefully and maybe the Charente Baguley too. Laughing

A note for Brian.
At the lamented Fête de la Vapeur you said you shredded 2 ally clutches.
Were these both from Blacksmith?

Because today I noticed ally filings coming from the clutch area and although the clutch still works fine (with no spring) the deposits give cause for concern and my clutch and generator motor are exactly aligned.
I'm using a complete Blacksmitch clutch assembly with steel bell and ally flywheel.
If it's just bedding in then ok but if the clutch shoes are crap then an alternative needs to be sourced.
Van's has a bog standard complete Kyosho clutch with plastic shoes and all seems perfect so far.

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GWhizz



Location : Charente, France

PostSubject: Re: Diesel 4   Thu May 09, 2013 7:08 pm

Carl Hibbs wrote:


A note for Brian.
At the lamented Fête de la Vapeur you said you shredded 2 ally clutches.
Were these both from Blacksmith?


Actually my alu clutch shoes have faired well, it's the alloy teeth from the clutch housing that have been chewed twice!

I'm going to pursue a completely different route, the whole concept of gears and mis-alignment is just too problematic!

_________________
Brian
Brian
also blogging at
www.frenchgardenrailways.com
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Carl Hibbs
Admin


Location : Haute Normandie - visitors welcome

PostSubject: Re: Diesel 4   Fri May 10, 2013 6:25 am

GWhizz wrote:
Carl Hibbs wrote:


A note for Brian.
At the lamented Fête de la Vapeur you said you shredded 2 ally clutches.
Were these both from Blacksmith?


Actually my alu clutch shoes have faired well, it's the alloy teeth from the clutch housing that have been chewed twice!

I'm going to pursue a completely different route, the whole concept of gears and mis-alignment is just too problematic!

And what route might this be please....? Shocked

The teeth being chewed is going to be in the area of misalignment or just crappy gears. There are better quality clutch bells than the Kyosho. (I also found a slight burr inside the bell which caused the shoes to shed some material).

It may just take some perserverance to achieve but it has to be correct vertically and horizontally although there is a tiny margin of error.
The motor shaft has to be parallel to the enginge crankshaft but the Kyosho engine mount holes are not perfectly equal or level. Rolling Eyes
I found on some engines the front mount is about 0.5mm difference to the rear.

Could you not make up your motor/engine mountings so they are adjustable in some way?



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Tacbob



Location : Harz, Germany

PostSubject: Re: Diesel 4   Fri May 10, 2013 6:02 pm

That's looking great. Many thanks Carl Smile .
I think it's called rain hatch over here. But I'm not sure.

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Lorenz
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Carl Hibbs
Admin


Location : Haute Normandie - visitors welcome

PostSubject: Re: Diesel 4   Fri May 17, 2013 6:31 pm

Also available in red....



And now fitted with a mini cooling fan too.

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fm12



Location : 87210 Haute Vienne, France

PostSubject: Re: Diesel 4   Fri May 17, 2013 9:28 pm

The flap on the exhaust,is called a exhaust rain water flap.In the real world they can be more trouble than they are worth.

Better on a upright exhaust to have a 90 degree bend on the exit.

But on the two baguley diesels they look good.A nice piece of detail.

_________________
Modelling trains of the Seychelles Government Railway 2ft6ins metre gauge in central France
 
 
LEVEL TRACK HERE NO NEED FOR R/C bouncebouncebouncebouncebouncebouncecheers
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Carl Hibbs
Admin


Location : Haute Normandie - visitors welcome

PostSubject: Re: Diesel 4   Sun Jun 09, 2013 8:26 pm

I sneaked in a bit of workshop time today....

Something that started a while back and rekindled by Brian's recent valiant efforts.
No clutch and no gears - direct coupling between engine and generator.



There is no fixed mounting for the motor. I just hacked a slot in the test baseplate for one of the mounting lugs to locate. This prevents the stator from spinning round. These cheap Hobbyking can motors are open ended and the stator is fixed to the mounting. I cut off one of the lugs!


The coupling is a piece of 8mm hex bar threaded one end and smooth the other.




I did try making my own but the I found these available from Conrad: M5 boulons dentretoise
And drilled out one end with a 5mm drill. I could cut the coupling down a bit more in length.



The voltage on idle was initially about 11 volts which is way too high. I did manage to reduce the idle voltage down to about 7-8 volts by only using 1 phase, that is connecting just two of the wires from the BLDC motor into a standard 4 diode bridge rectifier. This seems to work fine with the other wire not connected.




Here's some vid of the day's events.



I was suprised how smooth it all started and ran for about 30 mins with no sign of excessive vibration.
As these motors become smaller I think this could be the way forward and I wouldn't rule out electric starting either.
The possible disadvantage is that with such high idle voltage a regulator is definitely necessary unless I can find a similar high power but higher value KV motor.
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dtsteam



Location : Preston, England

PostSubject: Re: Diesel 4   Mon Jun 10, 2013 8:25 am

Excellent progress Carl. The cheapo R/C car speed controllers have turned up, and at 7 GBP a pop are certainly cheaper than clutches and gears, and even the hassle of switching phases in and out.. I'll try one out on battery chassis later on and see if they are any good. I don't know much about these things but could you run an ESC in parallel with your throttle servo ? Having said that, 11v on tickover might mean that you don't open the throttle much anyway. Good stuff !
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Carl Hibbs
Admin


Location : Haute Normandie - visitors welcome

PostSubject: Re: Diesel 4   Mon Jun 10, 2013 7:26 pm

My speed controllers turned up too and I tried one very briefly up to 14volts without any apparent damage so far. The speed control wasn't fantastically smooth but for less than 10 euros what the....!
I've still got the bulky Electronize if I really need to cope with high voltage and current.
Now I know I can use one two-wire phase I might try some other oddities like a step down transformer - if I don't blow myself up that is!

The direct coupling is again 'work in progress' and I ultimately want to try and eliminate any coupling at all by incorporating the BLDC rotor as part of the flywheel and crankshaft. This requires some creative engineering but if I make or get made an extended 5mm crankshaft spigot to I will be almost there. Smile

So where are you up to with your project?

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PostSubject: Re: Diesel 4   Today at 8:22 pm

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