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1/48 Kitty Hawk, ESCI, Italeri UH-1H comparison build


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On 6/12/2017 at 7:49 PM, rotorwash said:

Floyd asked me to start with the rotors since he is working on the body right now in his thread.  So, first off, here are the respective pieces of the rotor system, including the transmission.

 

ESCI-11 pieces including a combined engine/transmission. 

 

Figure%2019_zpsxdhvso6e.jpg

 

Italeri: 8 pieces including a "transmission" and I use the term loosely.  Note, of course, the inaccurate 212 blades.  While a relatively easy fix, since this is an OOB build, I will not be correcting them.

 

Figure%2020_zpsfs9nldwx.jpg

 

Kitty Hawk: 21 pieces including separate drag braces, scissor links, pillow block and pitch horns.  

 

Figure%2021_zpsegysgqqo.jpg

 

Here's a side by side comparison of the main rotor blades.  The Kitty Hawk blade (top) does not have part of the blade grip molded to it like the other two. This greatly aids painting of the blade before installation.  Also, the KH blade is the only one with the blade tie down included.  Note, of course, the inaccurate 212 blades in the Italeri kit (center).  While a relatively easy fix, since this is an OOB build, I will not be correcting them.

Figure%2023_zpsv7dwjcv1.jpg

 

One concession I did make was to drill out the tie down points on the KH main rotor.  Here you can see before and after.

 

Figure%2024_zpscqh4y3iw.jpg

 

 

Here are the stab bars for each kit.  The Kitty Hawk  part (top) is by far the closest to the real thing as you can see form the stab bar on the UH-1B below.  The stab bar was identical on all Hueys during the Vietnam era.  what I really like on the KH part are the  mixing levers which, while still attached to the stab bar, are set apart from it.

Figure%2029_zpsrzqp4bpw.jpg

 

UH-1B%2060-3554%20roof%20rotor%2031_zpse

 

Rotor masts compared. First the BAD sides.  Red arrows point to ejector pin marks.  While I don't like the fact that some dampner detail is sacrificed on the Kitty Hawk part (center), it beats the heck out of having ejector pin marks on the rotor mast and scissor links like the ESCI and Italeri parts.  Yellow arrows point to the swash plate which is much nicer on the Kitty Hawk kit and even includes some PE which I have already installed in this photo.  The green arrows point to the scissor links which are separate parts in teh Kitty Hawk kit but were installed for these comparison photos.

Figure%2030_zpsdww0idev.jpg

 

Here's the GOOD side showing the parts with no ejector pin marks.  The red arrows point to the dampner details on all three kits.  The KH kit (center) blows the other two away.  Compare it to the actual dampners below.

Figure%2031_zpspyvqzwwj.jpg

UH-1B%2060-3554%20rotor%2016_zpshkjutsxz

 

Here's a rotor mast on a UH-1H to compare with the kit parts above.

DSC_7184_zpslsd2oxif.jpg

 

Here is a quick comparison of the good and bad side of the KH kit showing the lost detail on the dampner.  It's really hard to see this on the finished part though and it could be corrected if desired.  This photo also shows the mold line on the mast.  Unfortunately, this is pretty common issue with round parts in most kits, but I was able to clean it up fairly well.

Figure%2025_zpsyqcgksmw.jpg

 

Now on to the main attraction, the main rotor head.  First the one negative of the KH part.  The right blade grip shows the seam which runs all the way around the part.  I have cleaned it off on the right blade grip.  Honestly, it is a small price to pay for the one piece rotorhead.  The blades slip in between the attachment points on the blade grip.

Figure%2022_zpsxqanpuaf.jpg

 

I used the blades to get the angles right on the drag braces (blue arrow).  The green arrow shows the TT strap retention nut.  It is a first on any Huey kit or even after market part.  the red arrow points to the pitch horn, which are separate pieces in the KH kit.  B careful installing these.  The upper arrow point to one installed correctly, while the lower arrow points to a pitch horn I installed with too much upward angle.  Trust me, this will make a difference later.  The part should sit flush with the vertical edge on the blade grip.  It's only a small amount, but it matters.  Finally, notice the pillow block with the PE parts.  While not 100% like the original, it isn pretty darn close!

Figure%2026_zpshfibxccv.jpg

 

Here is a photo showing the TT strap nut on the real thing.

DSC_7210_zpsj79vcbct.jpg

 

In my opinion this photo shows why the KH kit is light years above the competitors, check out the three rotorheads compared.  Seeing them side by side almost makes it very hard to ever build any other Huey kit.  The others aren't even close.  By the way, the upper pitch horn on the KH kit is installed correctly and sits away from the rotorhead.  I had to fix the lower one.  i would give a distant second place to the Italeri rotorhead (center) and a dismal third to the ESCI part.

Figure%2027_zpsmiwm9q2f.jpg

 

How do these three compare to the real thing.  Keep in ind his is a UH-1B rotorhead, but it is the only Huey I have ever had a chance to photograph from directly above so juct disregard the blade counterweights on the drag brace attachments.  You guys tell me, but I think Kitty Hawk nailed it.

UH-1B%2060-3554%20roof%20rotor%2038-edit

 

Next up will be finished pics of the rotors and moving on to some more parts.

   Ray

 

Not seeing the Blade Grip Reservoir that sit on top of the Grips and was filled with oil.  Bolt ran thru it and oil level was mid way on bolt.  You see it on the B Model when viewed from above.

Bo

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11 hours ago, rotorwash said:

Bo,

  You are right.  They missed they missed the oil reservoir. If it wasn't an OOB build, I would fix that.  Just a couple of bits of styrene should do the trick.

    Ray

Pretty simple fix.  If ya wanna go crazy, sandwich a slice of clear rod between two Gull Grey thin sheets of plastic and glue on blade grips.  If ur gonna display model with doors open, gotta make new sliding armor plate in rear position so crew can get in/out. And add T/R Pedals adjustment knob just aft of both cyclic boots.

Hey, this kit is LIGHT Years ahead of any other kit out there!!

Bo

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OK quick question :

 

What is this circled antenna for?   My guess might be DME or VOR or something like that.  

Inquisitive minds would like to know.

20060906ara8262658_239%20query_zpsps7clu

 

It was available in the old Italeri kit.  Whilst this is a more modern pic the RAAF Hueys definitely had this mounted towards the end of Vietnam involvement.  It is missing from the new KH sprues unfortunately. 

Figure%203_zps8f9xxbz2%20query_zpso3m9u9

 

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5 minutes ago, AndrewPerren said:

OK quick question :

 

What is this circled antenna for?   My guess might be DME or VOR or something like that.  

Inquisitive minds would like to know.

20060906ara8262658_239%20query_zpsps7clu

 

It was available in the old Italeri kit.  Whilst this is a more modern pic the RAAF Hueys definitely had this mounted towards the end of Vietnam involvement.  It is missing from the new KH sprues unfortunately. 

Figure%203_zps8f9xxbz2%20query_zpso3m9u9

 

Andrew,

  Do you have any photos of the antenna in Vietnam?  I never say never but I can't recall seeing any.  You also have to remember that Floyd and I were working under the assumption that the first release would be strictly US in Vietnam so we never looked at foreign users at all.

    Ray

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Well I answered my own question about the Bushranger.  9 Sqn Royal Australian Air Force, Bushranger Gunship Nui Dat Vietnam 69-70 from John Gibson.  You can clearly see the antenna Andrew mentioned under the belly.

   Ray

 

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Edited by rotorwash
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8 hours ago, AndrewPerren said:

OK quick question :

 

What is this circled antenna for?   My guess might be DME or VOR or something like that.  

Inquisitive minds would like to know.

20060906ara8262658_239%20query_zpsps7clu

 

 

Radar altimeter? 

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3 hours ago, huey_crew_chief said:

Nah, no such thing in Vietnam.

World wide, there were soooooo many configurations.  Gotta leave something for 'After Market Guys'.  

The US Army needed VFR pilots so we only got a 'Tactical IFR' ticket.  Had to be able to do climbing/descending turns and shoot a GCA landing.    

Later, after returning, Army made everyone get regular IFR rating.  And, my Reserve Unit, had some of the very best Instrument Rated IP's I know of.  Very fortunate to get that type of training. When I finished, took FAA check ride and Examiner gave me a 'stuck card ADF approach' to local airport.  I missed RW Center line some 10 or so degrees.  Felt bad that I missed he and he said, the average pilot wouldn't be able to find the Airport, much less RW center line!!  ??

We DID have excellent IFR training.

EDIT: I passed FAA and got my Instrument ticket.  

Bo

Demon 68

 

Edited by jabow
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33 minutes ago, jabow said:

World wide, there were soooooo many configurations.  Gotta leave something for 'After Market Guys'.  

The US Army needed VFR pilots so we only got a 'Tactical IFR' ticket.  Had to be able to do climbing/descending turns and shoot a GCA landing.    

Later, after returning, Army made everyone get regular IFR rating.  And, my Reserve Unit, had some of the very best Instrument Rated IP's I know of.  Very fortunate to get that type of training. When I finished, took FAA check ride and Examiner gave me a 'stuck card ADF approach' to local airport.  I missed RW Center line some 10 or so degrees.  Felt bad that I missed he and he said, the average pilot wouldn't be able to find the Airport, much less RW center line!!  ??

We DID have excellent IFR training.

EDIT: I passed FAA and got my Instrument ticket.  

Bo

Demon 68

 

So there was radar altimeters on helicopters during that period?  I did not know that. 

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The same antenna is on the US Navy UH-1N but I have no clue what it is. Could be the NDB antenna, but I have no clue. It is clearly visible on the UH-1N filmed in the movie "Towering Inferno"...

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On 6/25/2017 at 9:05 PM, hawkwrench said:

I found this over on FSM.

UH-1DantennasVN1965_zpsefkqaaxz.jpg

It wouldn't be #7 would it?

Tim

Pretty sure I posted that over there, Tim and no, I do not believe it is the same antenna.  In fact, I don't believe US Army Hueys ever had the belly antenna seen on the Aussie birds.  You know any different, Dave?

   Ray

 

Just for completeness you can see the marker beacon antenna (7) on this UH-1H on display in Rogers, Arkansas.  It's the antenna on the center line directly aft of the landing light.

 

35591182331_405aaaf3a6_b.jpg 

Edited by rotorwash
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Sorry for the ol'

 

canoworms_zpsq7v9arpg.gif

 

The same antenna is on the UH/HH-1N as already stated ( USMC / US Navy / USAF & Canada) and it was also on the RNZAF UH-1H and the RAAF UH-1B ( Ironically haven't seen it on RAN UH-1B)

 

Fortunately I have a couple of Italeri D & N kits that are parts donors - probably should refine the part and master it for casting.  Good news is that an early Vietnam RAAF UH-1H can still be done without it.

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55 minutes ago, hawkwrench said:

Obviously I'm Huey stupid!!! Hehe

Excuse me while I walk back over to my corner and STHU!!!!

 

Tim

No worries.  I can't believe we don't know what it is, but I WILL find out!

   Ray

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32 minutes ago, rotorwash said:

No worries.  I can't believe we don't know what it is, but I WILL find out!

   Ray

You ARE the Huey man, Ray!!! You'll sniff it out like a coondog hunting a rabbit!

(I guess coondogs hunt rabbits, or am I coondog stupid too???)

 

Tim

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6 hours ago, hawkwrench said:

You ARE the Huey man, Ray!!! You'll sniff it out like a coondog hunting a rabbit!

(I guess coondogs hunt rabbits, or am I coondog stupid too???)

 

Tim

So far I have two votes for Radar Altimeter and one for possible Doppler Nav antenna.  I am hoping one of my friends at Bell will have a definitive answer though.

 

For the record, Coon dogs make great squirrel dogs as well.  I can't really comment on their rabbit hunting abilities!

   Ray

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9 hours ago, rotorwash said:

So far I have two votes for Radar Altimeter and one for possible Doppler Nav antenna.  I am hoping one of my friends at Bell will have a definitive answer though.

 

For the record, Coon dogs make great squirrel dogs as well.  I can't really comment on their rabbit hunting abilities!

   Ray

I vote Doppler, I think we can all say that Hueys (from all countries)  in Vietnam did not have the radar altimeter.   

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