Topic: CVA-01 HMS Queen Elizabeth (Read 70961 times)

johnv · « **Reply #175 on:** May 23, 2020, 05:21:09 pm »

Hi Bob it's John v all looks very good. We'll done. I knew you would do it. Great job cheers John

raflaunches · « **Reply #176 on:** May 23, 2020, 06:17:08 pm »

Hi Bob

These are the article pages I mentioned- if you like I can send you some scans and email you with them. PM me with your email address and I’ll send them to you. Hope they help.

derekwarner · « **Reply #177 on:** May 23, 2020, 11:55:29 pm »

The side lift motion by chain is great Bob

Are you using just one servo drum [endless?] for the lift raise & lower?...[we just see a glimpse of the drum to the left for a second]

If so, an ACTion P96 Servomorph would give you great control over adjustable [desired] speed and chosen set points [totally repeatable]

Could certainly be wurth reading the spec sheet

https://www.componentshop.co.uk/pdf/pdf.jpg

Any tendency for the drive to hop or jerk, could be countered by adding some sheet lead into the base of the lift floor plate fo add to stability

Derek

Rob47 · « **Reply #178 on:** May 24, 2020, 11:16:02 am »

Derek
No servos were harmed in the making of this lift. I tried all sort of methods, including servo slower, but it is not effective when trying to control two servos.. Solution is two small high torque right angle gearboxes, running at 3 RPM, no other electronics need, simply on/off/on switch and a twin relay. Works a treat ,if possibly tad slow but that can be changed later, this at least proves the system.

Bob

Quote from: derekwarner on May 23, 2020, 11:55:29 pm

The side lift motion by chain is great Bob

Are you using just one servo drum [endless?] for the lift raise & lower?...[we just see a glimpse of the drum to the left for a second]

If so, an ACTion P96 Servomorph would give you great control over adjustable [desired] speed and chosen set points [totally repeatable]

Could certainly be wurth reading the spec sheet

https://www.componentshop.co.uk/pdf/pdf.jpg

Any tendency for the drive to hop or jerk, could be countered by adding some sheet lead into the base of the lift floor plate fo add to stability

Derek

derekwarner · « **Reply #179 on:** May 24, 2020, 11:38:49 am »

Thanks Bob...well explained

...the proof is in the pudding & the end result is

..I do not think the raise/lower speed is too slow... Derek

Rob47 · « **Reply #180 on:** June 12, 2020, 07:20:44 pm »

Well latest up date on the QE, built two of the three working HF antennas, they are raised and lowered copying designs used in Ark Royal, Eagle and Victorious, rack and pinion and on the model controlled by individual servos, all linked to a three legged Y lead, Waiting for the servo morph to come back into stock then I can adjust the speed and throw, eventually control will be a on/of switch.

Bob

https://youtu.be/vej2UBeyDh8

ballastanksian · « **Reply #181 on:** June 12, 2020, 08:09:46 pm »

These, the anchor and the lift all look great in motion. The speed of the lift if a bit slow, but like you say, you can adjust it, and you do not want it too fast, or everything that travels on it will become VTOL!

raflaunches · « **Reply #182 on:** June 12, 2020, 11:41:13 pm »

Love it Bob

Love to see your working features - it’s little things like this that make the model special.

Rob47 · « **Reply #183 on:** June 13, 2020, 02:34:08 pm »

Quote from: ballastanksian on June 12, 2020, 08:09:46 pm

These, the anchor and the lift all look great in motion. The speed of the lift if a bit slow, but like you say, you can adjust it, and you do not want it too fast, or everything that travels on it will become VTOL!

true but would save having her in for refit for a ski jump

Bob

ballastanksian · « **Reply #184 on:** June 13, 2020, 03:35:11 pm »

True Bob, true!

Rob47 · « **Reply #185 on:** June 25, 2020, 11:45:51 am »

Now got all the HF Antennae working under r/c control from a rotary switch on the tx, just needs linkage tweaking and job done, quite pleased, speed is set from watching ARK Royals in action

Bob

https://youtu.be/xY7yPg-wkGw

frogman3 · « **Reply #186 on:** June 29, 2020, 07:22:32 am »

Quote from: Rob47 on June 25, 2020, 11:45:51 am

Now got all the HF Antennae working under r/c control from a rotary switch on the tx, just needs linkage tweaking and job done, quite pleased, speed is set from watching ARK Royals in action

Bob

https://youtu.be/xY7yPg-wkGw

HI Bob its great to see your anttenas workin on your carrier an the aircraft lifts i got my aircrafts elevator or lifts whatever they called workin on my USS NIMITZ an the hangar doors to open an close by push pull wires
chris

ballastanksian · « **Reply #187 on:** June 29, 2020, 08:59:35 am »

I like how the pivots are slightly loose as that will protect them from inevitable knocks breaking the pivots or their mounts. Just wiggle them into alignment and they look just right

Rob47 · « **Reply #188 on:** July 04, 2020, 02:33:47 pm »

Well with her name going on I feel as if I am nearly there, (if only)

Bob

frogman3 · « **Reply #189 on:** July 04, 2020, 05:58:49 pm »

LOOKIN GOOD Bob

chris

frogman3 · « **Reply #190 on:** July 15, 2020, 12:26:07 pm »

HI Bob whats happening on her ?
chris

Akira · « **Reply #191 on:** July 15, 2020, 01:00:05 pm »

When I need to adjust motor speeds or simply voltages in general, as long as the current draw is low, I have used this Buck Converter, which works beautifully and is very inexpensive. https://www.mpja.com/Adjustable-15-37V-DC_DC-Buck-Converter-with-LED-Volt-Meter/productinfo/30149+PS/ You may find it to be just the ticket for your blast deflector motor.

Rob47 · « **Reply #192 on:** July 15, 2020, 02:40:33 pm »

Hi thanks for the post, not to sure what you mean as i have not mentioned blast deflector motors, they are a static item.

Bob

Quote from: Akira on July 15, 2020, 01:00:05 pm

When I need to adjust motor speeds or simply voltages in general, as long as the current draw is low, I have used this Buck Converter, which works beautifully and is very inexpensive. https://www.mpja.com/Adjustable-15-37V-DC_DC-Buck-Converter-with-LED-Volt-Meter/productinfo/30149+PS/ You may find it to be just the ticket for your blast deflector motor.

Rob47 · « **Reply #193 on:** July 15, 2020, 02:41:35 pm »

Bit of a pause while working on Vic, but pulley wheels for crane and arrestor gear, arrived to day so that next job

bob

Quote from: frogman3 on July 15, 2020, 12:26:07 pm

HI Bob whats happening on her ?
chris

Akira · « **Reply #194 on:** July 15, 2020, 03:28:01 pm »

My mistake! So sorry, I confused the lift and anchor with the deflector.... although that would be quite a feat.I actually use one of the converters to power and adjust the speed of my anchor winch on my rescue salvage ship. They work beautifully as power supplies for LED s as well.

Rob47 · « **Reply #195 on:** July 15, 2020, 08:33:18 pm »

hey no problem, the lifts work brilliant now using 3rp hi torque motors, one each side. I use a similar device to adjust current, cost about £2 and are absolutely brilliant.

Bob

Rob47 · « **Reply #196 on:** July 22, 2020, 12:31:52 pm »

Latest images of CVA-01 Queen Elizabeth

Show first two arrestor wires fitted, Sea dart launcher roughly located, Jet blast deflectors, and one ships boat and crane.

Bob

frogman3 · « **Reply #197 on:** July 22, 2020, 05:04:22 pm »

NICE WORK Bob comin on great a pleasure to follow this build

chris

johnv · « **Reply #198 on:** July 23, 2020, 10:38:12 am »

Hi Bob it's John v. You are doing a grand job keep up the work. Cheers John v

Rob47 · « **Reply #199 on:** July 23, 2020, 10:22:03 pm »

It may look brutal, but this is the start of the main embarkation port, a similar one will also be added to the port stern side. the whole in the sponson is for the 45 foot launch. 35 foot work boat, these are held in side the sponson, very similar to the current QE, once in the water the accommodation ladders can be lowered for access to the launch Not decide if I will have this as a working feature yet

Bob

News:

Author Topic: CVA-01 HMS Queen Elizabeth (Read 70961 times)