UH-1D vs UH-1H external differences?

D models had the pitot tubes and FM homing antennas on the nose. On H models the pitot tube was moved to the roof, between the upper windows; the FM homing antennas were deleted; and the FM "Towel Rack" antenna was added to the roof near the transmission cowling. All the other H model upgrades were internal pertaining to the engine and tranny.

UH-1D

Vietnam Era UH-1H

Later model (1980's) UH-1H with wire strike kit, and VHF FM antenna (long whiskery antenna on roof)

Late UH-1H MedEvac with heat supressing toilet bowl exhaust, wire strike kit, APR-139 antenni on the nose, VHF antenni on the roof and tail, and inlet particle seperator on the jet intakes.

The 212 (UH-1N) rotor blade has a wider cord than a 205 (UH-1D/H) blade.  This extra width is on the trailing edge and looks like a thin spline.  You can see it below on the blades from the 1/35 Panda UH-1 kits.  The same blades are in both their UH-1D/H kits and their UH-1N kit.

The middle blade is the straight 212 blade from the kit.  On the bottom blade, the red areas are the areas on the 212 blades that need to be removed to make them into 205 blades.  The top blade has been reshaped into a 205 blade. 

No idea which Italeri kit it is, but it makes sense since the Panda kits are scaled up 1/48 Italeri kits.

Good luck.

Thanks for the info I can handle moving pitot tubes, and the antennea are usually different on civilian helicopters anyway so that is not a problem. I don't know how obvious the difference in rotors is in 1/72 so that may not be a big issue, I'll have a look at the rotors though, I have both the Italeri UH-1D "slick" and the UH-1N so it should be fairly easy to tell if I need to make changes. Also have the Revell and Hasegawa UH-1D / H kits too for comparison. The Italeri kits are much better from a look through the boxes anyway.

Sounds like one of the Panda UH-1 D / H kits might be a good choice for a 205A++ if I decided to do one in 1/35. Yosemite National Park uses a 205A++ for their Fire, LE, SAR, medivac helo, since I'm going to have good access to the 1-1 I might actually lose my mind and try to do it in 1/35 someday, it would probably look pretty good next to the 1/32 HH-43 I'm doing. I don't know if I have the room though if I get hooked on the scale.

Sounds like the Bell 205++ may be similar to a Bell 210/Super Huey.  If so, here is another option for you.  If you decide to tackle it in 1/35, the Panda UH-1N USMC/USAF Gunship comes with all the parts to build a Bell 210/UH-1H Super Huey version.  The D/H engine cowling is still in the N kit (I also assume the Italeri kit it was copied from has the parts as well).  It is the version that was in the running for the new LUH (Light Utility Helicopter) by the US Army, unfortunately it was not selected. It is currently in use by many foreign countries and civilian agencies.  It is a standard UH-1D/H fuselage with and without the the N nose, upgraded engine and avionics, and other features.

Bell 210/ UH-1H Super Huey w/standard nose.

Good luck.

Came across this, hope it helps

Andy

Except for the 212 nose it does sound like the 210. The ++ is also known as a Super 205 and is fairly popular for firefighting since it has similar performance to the 212. 

Pirate thanks for the diagram, it could come in handy.

The D model originally had a 44' dia rotor and counterweights, those you can see in one of the replies. When the MWO came out to change the D to the H, a 48' dia rotor was installed and a extension to the tailboom was added at the airframe to boom attachment. This meant 8 tailboom attachements instead of 4. The first Army serial number to be an H model was 67-17145, everything prior to that was a D model. (mfgr 1967) The first D model was 62-2106 and the last number was 66-8577. The Army later changed the tail rotor location to the right hand side, so you might see some H's with the tail rotor on either left or right side.

Hope this helps

Ed

These are great differences between the D and the H.  The only visual difference missing is that the cockpit of the D has most of the instruments on the side of the PIC cause' this aircraft was meant to be a single pilot helicopter to be flown under VFR conditions. Thereafter, new versions evolved making the UH-1 a 2 pilot helicopter. Having 2 pilots, required adding more redundant instruments on the side of the co-pilot and these changes made posible to operate the helicopter under IFR conditions.

To continue my prior comments.  I have noticed that there still some confusion on the differences after the H.  Althought, they look very similar.  To reacap...the UH-1 with the tailrotor on the right side is a UH-1 II (H airframe with Huey Cobra engine, transmision, main and tail rotor blades, and tail rotor gear boxes).  The Huey 2s are instrument rated and can carry more payload.  If you see a UH-1 that looks like a Huey 2 but, has the N model nose, that is a UH-1 Super Huey.  This more aerodinamic nose gives the Superhuey 7 to 14 more knots of speed.  

The UH-1N is a Superhuey with 2 engines.  These 2 engines together provide the same shaft horsepower of the single engine Superhuey but, having 2 engines provide more safety while operating over the water.  The concept is that if you loose one engine over the water you might continue flying if at the right single engine airspeed. If not at the SE airspeed, this will assist you in a controlled landing or ditching instead of crashing. The Bell 412 is the civilian version of the N model but, with 4 blades in the main rotor.

The UH-1Y Venom is a complete different animal if compared with the 412 and N.  This is the airframe of a UH-1N with re-designed cowlings, bigger engines and capable of handling precision weapons systems (the body of the N with the power train of the AH-1Z).  It can be compared to the power of a UH-60M Blackhawk in the size of an N.

Some single engine UH-1s use a different intake filters and/or the toillet bowl exhaust (Usualy the military and from the Huey 2 and later civilian vesrions). Other differences like antennaes, drain ducts, hoist, fry bars, spot lights, cameras, taller skids, and gun/rocket pods are just little details based on operational requirements of the operator.

My recommendation is, look for a picture of the right model that you want to build (D,H, II, Superhuey, N, Y....) and build it like that.  Don't forget to see on what side is the tail rotor. You will be close to reality.  I usually use the concept of keeping it simple.

I hope this helps.

Holy dead-thread revival.  This one is from '07, over 8 years ago.  I'm surprised the photo links still work.

The UH-1Y Venom is a complete different animal if compared with the 412 and N. This is the airframe of a UH-1N with re-designed cowlings, bigger engines and capable of handling precision weapons systems (the body of the N with the power train of the AH-1Z). It can be compared to the power of a UH-60M Blackhawk in the size of an N.

To add to your description, the UH-1Y "Venom" is also 21 inches longer in the cabin than a standard UH-1N.  There is an added "plug" behind the B pillar (area behind the pilots' doors) that houses electronics racks and commo gear so the cabin space is not taken up by these.  It also has 4-blade main and tail rotors, among other upgrades and changes.

UH-1Y "Venom"

Kitty Hawk models now has both the UH-1Y Venom and AH-1Z Viper in 1/48.  They are also working on them in 1/35 as well.  I can't wait for the 1/35 versions as the 1/48 ones are really nice. 

True that Gino, and still what a lot of valuable information all around. Wish there was a way to sort of be able to access other peoples bookmarks.

HeavyArty,

Great info on the Venom.  I am not familiar with it at all other than what I have seen on photos and comments from my coworkers.  I am very familiar from the inside out on the ones I talked about on my last post.  I just wanted to contribute with those that still put some plastic together.

I was a modeller from my 13s thru my 27s. Then, when my son was born and my lovelly wife persuaded me to choose between the scale models or her.  Obviously,  since I opted to become her ancient greek granite sculptor.  It has been happines ever after.  I am pretty sure all the scale modellers are familiar with this subject.

Now, I am 46 and about to retire.  All my old assembled collection is long gone and MIA. In 19 years, I have accumulated a collection over 200+ unassembled models.  I still have no time to put something together with work, kids in college and family matters.  At this time, I am happy assist with knowledge and experience.

I know! I know! You guys are thinking that I am crying while I writting this but, I am not.  I am just enjoying your stories>>>>>>>>> Take care and keep sharing your wisdom.

wanab

To continue my prior comments.  I have noticed that there still some confusion on the differences after the H.  Althought, they look very similar.  To reacap...the UH-1 with the tailrotor on the right side is a UH-1 II (H airframe with Huey Cobra engine, transmision, main and tail rotor blades, and tail rotor gear boxes).  The Huey 2s are instrument rated and can carry more payload.  If you see a UH-1 that looks like a Huey 2 but, has the N model nose, that is a UH-1 Super Huey.  This more aerodinamic nose gives the Superhuey 7 to 14 more knots of speed.  

Some of that is correct and a lot is inaaccurate.  Beside sthe Huey II, the Bell 210, civil Bell 205A and the USAF HH-1H are all single engine long bodied Hueys that have right handed tail rotors.  The Huey II does use the L703 engine of the AH-1F but the tailboom, drivetrain and transmission are all 212 components.  The 212 nose is, in fact, a customer option for the Huey II and many have it so the pointed nose in no way designates a single engine Huey as a "Super Huey."  NOt sure what Super Huey means anyway as it has been thrown around for several variants.  The TH-1H flown by the USAF is a Huey II with three large MFDs instead of the traditional steam guages and they all have the pointy 212 nose.  There are a number of non-OEM mods to Huey such as the Huey Plus that are out there as well.

The UH-1N is a Superhuey with 2 engines.  These 2 engines together provide the same shaft horsepower of the single engine Superhuey but, having 2 engines provide more safety while operating over the water.  The concept is that if you loose one engine over the water you might continue flying if at the right single engine airspeed. If not at the SE airspeed, this will assist you in a controlled landing or ditching instead of crashing. The Bell 412 is the civilian version of the N model but, with 4 blades in the main rotor.

The civilian version of the UH-1N is the Bell 212.  the Bell 412 is an entirely different helicopter with a totally different rotor system.

The UH-1Y Venom is a complete different animal if compared with the 412 and N.  This is the airframe of a UH-1N with re-designed cowlings, bigger engines and capable of handling precision weapons systems (the body of the N with the power train of the AH-1Z).  It can be compared to the power of a UH-60M Blackhawk in the size of an N.

The original UH-1Y prototype was a redisgned UH-1N but are now totally new aircraft built in the Amorillo factory by Bell.

Some single engine UH-1s use a different intake filters and/or the toillet bowl exhaust (Usualy the military and from the Huey 2 and later civilian vesrions). Other differences like antennaes, drain ducts, hoist, fry bars, spot lights, cameras, taller skids, and gun/rocket pods are just little details based on operational requirements of the operator.

My recommendation is, look for a picture of the right model that you want to build (D,H, II, Superhuey, N, Y....) and build it like that.  Don't forget to see on what side is the tail rotor. You will be close to reality.  I usually use the concept of keeping it simple.

I hope this helps.

 

wanab

These are great differences between the D and the H.  The only visual difference missing is that the cockpit of the D has most of the instruments on the side of the PIC cause' this aircraft was meant to be a single pilot helicopter to be flown under VFR conditions. Thereafter, new versions evolved making the UH-1 a 2 pilot helicopter. Having 2 pilots, required adding more redundant instruments on the side of the co-pilot and these changes made posible to operate the helicopter under IFR conditions.

 

Sorry, but the ONLY difference between a US Army UH-1D and a UH-1H was the replacement of the UH-1D's T53 L11 engine by a T53 L13 engine in the UH-1H.  Fcatory UH-1Hs also had a roof mounted pitot while D models had a nose mounted pitot.  Many D models were upgraded to teh H model standard by adding the L13 engine.  Now the UH-1D flown by the Germans is essentially an H model built by Dornier.  The designation system in Germany is just different than in the US.