Hill W9 Portable - Mcgraw

Here’s a positive review example for the McGraw-Hill W9 Portable (assuming it refers to a portable industrial / material handling scale or similar weighing device):

"The McGraw-Hill W9 Portable is a fantastic piece of equipment. It's incredibly rugged yet easy to move around the job site. The display is clear and easy to read even in bright sunlight, and the battery life lasts through multiple shifts without issue. Setup was straightforward, and the accuracy has been spot-on every time we've used it. For anyone needing a reliable, go-anywhere industrial scale, this is well worth the investment."

If you meant a different product (like a book, tool, or electronic device), let me know and I can tailor the review more specifically. mcgraw hill w9 portable

Key Specifications (Historical Standard)

While versions varied by customer request, the classic McGraw Hill W9 Portable adhered to these general specs:

• Primary Voltage (Input): 2400V, 4160V, or 12.47kV (common for industrial feeders)
• Secondary Voltage (Output): 120/240V single-phase or 120/208V three-phase
• Frequency: 60 Hz (standard for North America)
• Transformer Type: Dry-type or oil-filled, self-cooled (OA)
• Enclosure: NEMA 3R (weather-resistant) or NEMA 12 (industrial, dust-tight)
• Connectivity: Cam-Lok or pin-and-sleeve high-amperage receptacles
• Weight: Typically 600–1,200 lbs depending on configuration
• Dimensions: ~48" L x 36" W x 40" H

The Golden Era: Why the W9 Dominated Job Sites

From the 1960s through the early 1990s, the McGraw Hill W9 Portable was a ubiquitous sight on construction projects across America. Its popularity stemmed from three core principles: Here’s a positive review example for the McGraw-Hill

Sourcing Replacement Parts

• Transformers: While McGraw-Edison windings are unique, a custom rewind by a shop like HPS or Hammond Power Solutions can modernize your W9.
• Breakers: Most W9 units used Square D QO or QBL breakers. These are still in production. For larger frame breakers, search NOS (New Old Stock) on eBay or industrial surplus sites like Radwell.
• Wheels/Skids: The wheel hubs were often standard Northern Tool or Jackson casters. Replace with heavy-duty pneumatic or solid rubber tires rated for 800+ lbs each.
• Nameplate Data: If the factory nameplate is missing, you can contact the McGraw-Edison archives (now owned by Cooper Industries/Eaton) with the serial number for historical data.

5.2 Common Failure Points

1. Idler tires: These become hard as plastic. Replacement requires finding a machinist to 3D-print or cut new rubber.
2. Capacitors in power supply: The old electrolytic capacitors dry out, causing 60Hz hum.
3. The "W9 counter search" mechanism: The magnetic sensor degrades. Most users disable it.

2.2 Tape Format and Speed

Unlike consumer reel-to-reels that used ¼" tape on 5" or 7" reels, the W9 used a unique 3-inch NAB hub reel (though adapters exist for standard reels). It recorded in full-track mono (later versions offered half-track).

• Speeds: 1-7/8 IPS (inches per second) for voice dictation, and 3-3/4 IPS for music/interview quality.
• Reel Size: Max 5" reels, giving approximately 30 minutes at 3-3/4 IPS.

Where to Find a McGraw Hill W9 Portable Today

Given that production ceased roughly 30–40 years ago, you won’t find the W9 at Home Depot or Grainger. However, these units are highly sought after by restoration enthusiasts, off-grid homesteaders, and budget-conscious contractors. Your best bets are: "The McGraw-Hill W9 Portable is a fantastic piece

• GovPlanet / IronPlanet: Military and municipal surplus auctions frequently list "Portable Transformer-Power Distribution, McGraw-Edison."
• Craigslist & FB Marketplace: Search under "industrial transformer," "portable substation," or "temporary power panel." The sellers often don't know the model number, so look for the distinctive rectangular enclosure with multiple Cam-Lok outlets.
• Scrap Yards: Tragically, many W9s have been scrapped for copper. If you have a good relationship with a local scrap dealer, ask them to alert you when an old industrial power unit comes in. You can often buy it for just above scrap value.
• Dedicated Forums: The SmokStak forum (antique engines and machinery) and Mike Holt’s Electrical Forum have classified sections where W9 units pop up for sale.

5. Collector’s Value and Modern Status

Today, finding a working McGraw-Hill W9 Portable is a rare treat for heavy equipment enthusiasts.

• Restoration: Antique machinery clubs often seek out W9s for restoration. The complexity of the cable control system makes them a challenging but rewarding restoration project.
• Scale Models: Due to its classic silhouette, the W9 is a popular subject for die-cast scale models (such as those by CCM or Conquest Models), often marketed as "McGraw Hill W9 Portable Traxcavator." These models highlight the machine's distinctive boom and cable rigging.

How Much is a McGraw Hill W9 Portable Worth?

The price varies wildly based on condition, included cables, and whether the transformer has been tested.

• Scrap/Not working (untested): $100 – $300 (mostly copper value)
• Working, cosmetic rust, needs tires: $500 – $1,200
• Restored, tested, with new breakers & receptacles: $2,500 – $5,000
• Mint condition, original paint, with factory docs and cable set: $7,000+ (collector/decorator value for industrial-themed spaces)