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Author Topic: No dead center on a single cylinder  (Read 3752 times)

rhavrane

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No dead center on a single cylinder
« on: December 21, 2016, 08:33:45 pm »

Bonjour,
I have had the opportunity to get a Stuart H10 with a simple and original solution to avoid its dead centers, I like sharing (sorry, comments in French):  https://www.youtube.com/watch?v=-AasvhDdzG0
If you have other alternatives to do it, please let us know  :-))
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Raphaël
Raphaëlopoulos Steam Lines UnLimited
Membre du Modele Yacht Club de Paris http://mycparis.fr/
Membre de l'Offshore Club de Paris : http://site-ocparis.wifeo.com/
My YouTube channel: http://www.youtube.com/user/rhavrane

SteamboatPhil

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Re: No dead center on a single cylinder
« Reply #1 on: December 21, 2016, 08:45:03 pm »

Tres bon


A clever solution and one I am going to try, for those who don't speak french the video sort of explains it.


Well done rhavrane,  :-))
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grendel

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Re: No dead center on a single cylinder
« Reply #2 on: December 21, 2016, 09:00:57 pm »

Ah so the cam and the arms stop the motor from stopping on dead centre, if its near the cam and sprung arms just turn the motor just off dead centre so it will always restart.
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derekwarner

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Re: No dead center on a single cylinder
« Reply #3 on: December 21, 2016, 09:57:33 pm »

Raphaël........who is the maker of the French Typhoon motors?...[you have reviewed  these motors as one of your many steam engine reviews on the WEB videos :-))]....is it infact Fabrice under a new name?

The reversing method is of course with timing or and position  of the moving /rotating elements, .....our member friend RGY explained a little to me some time ago......has anyone attempted to engineer the same design for single cylinder?

...http://www.youtube.com/watch?feature=player_embedded&v=LG8fiJMXzhg

Such a pity using  :(( cheese head screws over hexagon bolts......

regards Derek....   
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Derek Warner

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rhavrane

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Re: No dead center on a single cylinder
« Reply #4 on: December 22, 2016, 08:58:47 am »

Bonjour Derek,
You are right, I have a TM2 in my Christiaan Brunnings and you are almost right  :-))  Typhoon Motors is a cooperation of Fabrice with a friend to offer another product range. Top quality as usual.
His reverse method is quite clever and I have never seen on my side another example.

To prevent the dead head, I have also seen a kind of "finger" plugged on a servo pushing le marine wheel, but I did not film it.
About "cheese head screws" (why cheese :D  ? we say "vis à tête fendue"), I fully agree with you, when you pay several hundred euros, they could be nicer...I already told him...
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Raphaël
Raphaëlopoulos Steam Lines UnLimited
Membre du Modele Yacht Club de Paris http://mycparis.fr/
Membre de l'Offshore Club de Paris : http://site-ocparis.wifeo.com/
My YouTube channel: http://www.youtube.com/user/rhavrane

hammer

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Re: No dead center on a single cylinder
« Reply #5 on: December 22, 2016, 04:08:39 pm »

Derek, Happy Christmas. R.G.Y. {-)
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NFMike

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Re: No dead center on a single cylinder
« Reply #6 on: December 22, 2016, 10:18:55 pm »

About "cheese head screws" (why cheese  :D  ? we say "vis à tête fendue"),

According to Google "vis à tête fendue" translates to "Slotted head screws". The "cheese head" refers to the shape of the head, which is a short cylinder - like a whole cheese, not the type of drive used. Other common head shapes (in English) are "countersunk", "round head" and "mushroom head", all of which can be slotted or have other types of drive recess, and of course "hex head".

rhavrane

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Re: No dead center on a single cylinder
« Reply #7 on: December 23, 2016, 08:07:54 am »

Bonjour Plague,
Thank you for this information  :-))   


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Raphaël
Raphaëlopoulos Steam Lines UnLimited
Membre du Modele Yacht Club de Paris http://mycparis.fr/
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My YouTube channel: http://www.youtube.com/user/rhavrane

southsteyne2

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Re: No dead center on a single cylinder
« Reply #8 on: December 24, 2016, 12:10:30 am »

Pity we can't see the mechanics looks interesting does anyone have any further info ?

Cheers and Merry Christmas to all
John
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ooyah/2

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Re: No dead center on a single cylinder
« Reply #9 on: December 26, 2016, 06:17:59 pm »

Pity we can't see the mechanics looks interesting does anyone have any further info ?

Cheers and Merry Christmas to all
John


John,
There is a disc mounted on the rear of the main shaft which has 2- pegs in it and there is a Servo operated lever that knocks the shaft over when stopped and it can also reverse the engine.
This can be done as the engine is a Piston valve, this wouldn't work on a slide valve.


I found this on youtube where you can see it operating.  ( https://www.youtube.com/watch?v=aZF-2Sfb5bE )


Best wishes for Christmas and the New Year


George.



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southsteyne2

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Re: No dead center on a single cylinder
« Reply #10 on: December 27, 2016, 10:54:56 pm »

Thank you George still working on a way to remotely reverse my slide valve single cylinder ,at present I have the slip eccentric working fine but the steam supply has to be cut completely off so a new regulator was required and I have a gear on the prop shaft which will hook up to a sail servo and hoping it will all fit under the floor of my wideawake launch .I have also looked at your gearbox for reversing but can't get my head around how it actually works ,I am one of these people that need to see movement so perhaps you could be so kind to enlighten me on its operation and also how successful it worked
Hope all is well and have a happy new year :-))
John
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ooyah/2

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Re: No dead center on a single cylinder
« Reply #11 on: December 27, 2016, 11:34:44 pm »

Thank you George still working on a way to remotely reverse my slide valve single cylinder ,at present I have the slip eccentric working fine but the steam supply has to be cut completely off so a new regulator was required and I have a gear on the prop shaft which will hook up to a sail servo and hoping it will all fit under the floor of my wideawake launch .I have also looked at your gearbox for reversing but can't get my head around how it actually works ,I am one of these people that need to see movement so perhaps you could be so kind to enlighten me on its operation and also how successful it worked
Hope all is well and have a happy new year :-))
John







Hi John,
Is it the G/Box linked to the 10V and the vertical boiler shown on the thread (  D10 boiler selection  ) in (STEAM SECTION ) if so it was quite a while since I made the G/Box and it may take some time to find the details of it.
I actually gave the G/Box to a friend of mine who lives above Brisbane at Hervey bay so if I can't find the details I will ask him to mail me some pics.


I do have other suggestions  (  Very Heath Robinson  ) but shall send them all at once.


Best wishes
George.



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boneash

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Re: No dead center on a single cylinder
« Reply #12 on: December 28, 2016, 10:05:49 am »

If you want to go the gearbox route I have drawings of the Volvo MD gearbox used from the 1960s in boats with a 15 to 25 hp engine.
It would be relatively easy to scale down and uses two cones and a few gears to provide clutchless reversing. Effectively the output shaft is moved a few mm fore and aft which disengages one cone and engages the other.

Best wishes to you and George.

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southsteyne2

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Re: No dead center on a single cylinder
« Reply #13 on: December 28, 2016, 11:32:01 am »

Hi Thanks for your prompt and interesting suggestion and would appreciate the drawings, may also be useful to operate paddle wheels independently which is on my to do list but that's another story

All the best and cheers from Aus
John
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