Author Topic: The Oliver Tiger Mk III - a 5cc Version  (Read 7293 times)

Offline Neil-Lickfold

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Re: The Oliver Tiger Mk III - a 5cc Version
« Reply #105 on: March 08, 2019, 11:40:20 PM »
I use the ramp down feature.  Stops in 0.2 seconds. I have the ramp start and ramp stop set the same. The micro switch is on the foreward stop. So only reverse direction can be enabled on the motor start. I leave the 1/2 nut engaged until the thread is completed. I have the micro switch on an adjustable thing to get the stop length correct.

Offline Ramon

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Re: The Oliver Tiger Mk III - a 5cc Version
« Reply #106 on: March 09, 2019, 10:34:11 AM »
Hi Neil, thanks for the info :ThumbsUp:

I do have vfd on the lathe but having done this method for so long and with very little likely to require it in the future I'll 'stick to what I know' - besides - me an electrics don't exactly go hand in hand ::)

Tug

"I ain't here for the long time but I am here for a good time"
(a very apt phrase - thanks to a well meaning MEM friend)

Offline strictlybusiness1

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Re: The Oliver Tiger Mk III - a 5cc Version
« Reply #107 on: March 09, 2019, 04:08:20 PM »
Ramon,

I see that you are still doing beautiful work! Keep it up!!

Jim Allen

Online sco

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Re: The Oliver Tiger Mk III - a 5cc Version
« Reply #108 on: March 09, 2019, 06:43:29 PM »
I use the ramp down feature.  Stops in 0.2 seconds. I have the ramp start and ramp stop set the same. The micro switch is on the foreward stop. So only reverse direction can be enabled on the motor start. I leave the 1/2 nut engaged until the thread is completed. I have the micro switch on an adjustable thing to get the stop length correct.

0.2 of a second is pretty quick - would be worried about the chuck unscrewing! Think I'll carry on with the leadscrew dog clutch lever but thanks for the suggestion.

Simon.
Ars longa, vita brevis.

Offline Jo

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Re: The Oliver Tiger Mk III - a 5cc Version
« Reply #109 on: March 09, 2019, 06:54:07 PM »
I would be more concerned about the low cycle fatigue stresses generated in the shafts by such fast slow downs  :paranoia:

Jo
Usus est optimum magister

Offline Ramon

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Re: The Oliver Tiger Mk III - a 5cc Version
« Reply #110 on: March 09, 2019, 07:22:03 PM »
Jim - it's good to see you looking in and for your endorsement.

What I do pales into insignificance in comparison to your sterling workmanship but it's real nice to know that someone like yourself can enjoy it - thanks indeed  :ThumbsUp:

Regards - Tug
"I ain't here for the long time but I am here for a good time"
(a very apt phrase - thanks to a well meaning MEM friend)

Offline Neil-Lickfold

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Re: The Oliver Tiger Mk III - a 5cc Version
« Reply #111 on: March 10, 2019, 12:13:37 AM »
0.1 seconds will unscrew the chuck. At0.2 seconds it never does
Unscrew. But it also takes actually longer than 0.2 seconds to stop.

Offline Ramon

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Re: The Oliver Tiger Mk III - a 5cc Version
« Reply #112 on: March 12, 2019, 04:26:43 PM »
Ken (Croft) - further to your PM

Unfortunately I am not able to scan only copy. For your info though - and anyone else who may be interested to read it......

Having checked through my folders the article on CIS you refer to was not published in Model Airplane News as I thought but in the Strictly I/C magazine. I have copies on many of Georges writings from MAN but they mainly refer to glo engines and predominantly for C/L speed and aerobatic usage.

The near four page CIS article was featured in the February/March 1989 issue of SIC. I believe they are still available but if you have any problems PM your address  ;)

Tug
"I ain't here for the long time but I am here for a good time"
(a very apt phrase - thanks to a well meaning MEM friend)

Offline Ramon

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Re: The Oliver Tiger Mk III - a 5cc Version
« Reply #113 on: April 23, 2019, 10:38:40 PM »
Hello Guys,

I see that quite a few have looked in over the last few weeks no doubt to see if any further progress has been made. Well, I regret to say, unfortunately there's not ::) however it has not been forgotten :)

Just to say then that this project has not been abandoned in favour of another modelling distraction but, as previously mentioned, I have found myself with some major changes in the garden and this has been occupying virtually all my time. A whole new area has suddenly become a viable proposition from a growing point of view and work to make this happen has been ongoing since.

I won't pick these engines up again until I'm well on top of this unplanned distraction but though it is now likely to be awhile rest assured, they will very much be in the forefront of any return to the confines of 'tha ol shid'. My intention is still to have them ready for the Forncett ME Day in October   ;)

In the meantime, thanks for looking in and enjoy the summer :)


Regards - Tug
"I ain't here for the long time but I am here for a good time"
(a very apt phrase - thanks to a well meaning MEM friend)

Offline Tennessee Whiskey

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Re: The Oliver Tiger Mk III - a 5cc Version
« Reply #114 on: April 23, 2019, 11:41:56 PM »
From modeling to land baron  :lolb: :lolb:

Whiskey

Offline Ramon

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Re: The Oliver Tiger Mk III - a 5cc Version
« Reply #115 on: Today at 07:52:39 AM »
Ha - at around sixty feet by thirty I hardly think so Whiskey  :Lol: but it's been neglected and in deep shade for so long it's taking it's toll on the old bones  :old: Might be able to grow the odd lettuce or two when all's done though  ;)

Regards - Tug
"I ain't here for the long time but I am here for a good time"
(a very apt phrase - thanks to a well meaning MEM friend)