Author Archives: Roy Bertalotto

RV Lead Acid/AGM to LITHIUM

A few years ago I installed a rather involved solar system in my Forest River RR19 Toy Hauler travel trailer. Back then, with a single Lithium battery costing over $1000 I decided to go the AGM (Absorb Glass Mat) route. You can read all about this project on another article here on my web page:

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RUGER New Model Ejector Housing Modification

After months looking for another Stainless Steel, Ruger New Model Vaquero in 38/357…..I finally found one at a very reasonable price (Well, reasonable for the Covid times $800!) Problem is, it had a 5.5″ barrel and my other NM Vaquero is 4.62″. A quick request on the SASS Forum and Boomstick had me into a

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K-12G Tube Amplifier Build

Recently I was perusing the classified section on the diyAudio forum (https://www.diyaudio.com/) and a fellow was offering a small, four tube, amplifier kit for a very reasonable amount. I contacted him and he assured me that all the parts and instructions were there. Seems he had bought this kit years ago and simply never built

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ICE Power Amplifier Build

Stereo HiFi amplifiers come in many different flavors. Class A, Class AB, and recently Class D has entered the fray. You can do a Google search to understand Class A and Class AB……. Class D is best described here: (From Wikipedia) https://en.wikipedia.org/wiki/Class-D_amplifier A class-D amplifier or switching amplifier is an electronic amplifier in which the amplifying devices (transistors, usually MOSFETs) operate as

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Roofnest Falcon Handle DIY

The Roofnest Falcon is a great Roof Top Tent (RTT). When you purchase it, they include one handle. And it is a VERY nice handle. If you want or need more handles they are $40 each. Don’t get me wrong, they are worth $40 each as they are extruded or cast aluminum, anodized and beautifully

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First Watt F5v2 VU Meters

Recently I aquired a PASS LABS First Watt F5v2 stereo amplifier to add to one of my systems You can read all about that experience here: http://rvbprecision.com/stereo/nelson-pass-first-watt-f5-turbo-v2.html Although I cleaned it up and installed a front mounted power switch and an LED indicator light, I wanted to modify it a bit more by adding VU

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Bore Guide For The 17hmr Rifle…$29.95

PROPER 17HMR BORE GUIDE!

When Hornady developed the 17HMR rimfire cartridge, they really hit a home-run! And the rifle manufacturers turned out a plethora of rifles to chamber it.

But unlike the 22RF cartridge, which many seasoned shooters will tell you, might never need to have the bore scrubbed, the 17HMR with its “real” copper jacketed bullet and its extreme velocity, needs bore cleaning often.

The problem is, no one makes a “proper” bore guide for this type of rifle. Most 17HMR rifles are nothing more than 22RFM rifles with a 17cal barrel. And many of these 22RF rifles have one issue when you try to use a standard bore guide that protects the delicate chamber edge and the bottle neck area of the chamber. A fixed ejector is in the way.

This little “shark fin” is right in line with the chamber and is fixed. It doesn’t move out of the way. Therefore the bore guide you might use for your centerfire rifles will not pass by and work in this rifle.

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