But

The Number of the Last Issue in your Current Subscription is Printed on Your Mailing Label.

THE OLD

THE NEW

1 circulation pump with motor

1 differential controller

2 temperature sensors 1 expansion tank

1 automatic air vent 1 pressure relief valve 1 check valve 12' electric wire and fittings 30' control wiring manual showing a 41 step trouble shooting tree electric costs for life weighs 35 lbs.

1 circulation pump with motor

1 differential controller

2 temperature sensors 1 expansion tank

1 automatic air vent 1 pressure relief valve 1 check valve 12' electric wire and fittings 30' control wiring manual showing a 41 step trouble shooting tree electric costs for life weighs 35 lbs.

They cost the same.

Ours is fun to watch.

SOL-Perpetua Features

• Wireless- Self-Pumping

• No Electric Running Costs

' 1 SOL-Perpetua

Bubble Pump weighs 4 lbs.

For a freeze protected solar water or space heating system the choice is yours...

Ask for free info. For installation manual and Video send $20.00

Bubble Action Pumps LTD.

121 Counter Street, Kingston Ontario, Canada K7K 6C7 Tel (613) 542-4045 • Fax (613) 542-0198

C Solar Electric Power

Complete Systems... Remote Homes • Water Pumping • RVs Lighting • Telecommunications

The Infinity 6...

• 100 Amp Charge Control

• Remote Access

& Amp-Hr Meter

The Infinity 6...

• 100 Amp Charge Control

• Remote Access

& Amp-Hr Meter

Distributor Inquiries Welcomed

A Premier Manufacturer of Quality Solar Products

SunAmp Power Company

0 1902 N. Country Club 0

Mesa, Arizona 85201 Imil SOLAREX SOLAREX

1-800-Mr-Solar

WARNING:

DON'T BUY YOUR PV SYSTEM UNTIL YOU READ THIS!

Did you know not all PV dealers are the same?

Not all dealers offer free system design. They haven't all been around for 15 years. Most don't even have a full-time engineer on staff. Many don't carry all the popular brands, only a few. Not all sell other energy efficient products, including lighting, gas room heaters, tankless water heaters, propane refrigerators, and a large selection of books. Most don't have a comprehensive 140 page design guide/catalog. Which makes it all the more amazing that there is ONE DEALER that offers you all this and MORE. We've been in PV for over 15 years, and we have what you need. For our 1995-96 140 page design guide & catalog, send $5 (credited to 1st order) or call our tollfree number. Credit card orders OK.

Sierra Solar Systems

(formerly Integral Energy Systems) 109H Argall Way Nevada City, CA 95959 Phone: 800-51-SOLAR Fax: 916-265-6151 e-mail: [email protected]

The TriMetric

-quality and affordability in a

VOLTS, AMPS and AMP-HOUR meterWe admit we're biased!... But we think everyone who relies on batteries needs a good system monitor (such as this one)...to know what's really happening!

Are your charging systems still putting out the AMPS they used to?

Are your batteries wasting more power than they should because they're old? How much current does that appliance or computer really draw?

Is the charge controller still controlling at the right voltage?

Without a good monitor you might have to guess

And also, amp hours tells your battery charge status! The ideal minimum battery system monitor for 12/24 V systems Call your RE distributor or us for more information. Suggested retail $160 (shunt not included)

BOGART ENGINEERING 19020 Two Bar Road, Boulder Creek, CA 95006 (408) 338-0616

Part three

Wild Cat One

Clare Bell

©1995 Clare Bell

Now we start fabricating and assembling parts for the most complex part of the vehicle, the V-belt transmission. Exercise your domestic archaeology and dig up Part 1 (HP #48, p.52) and Part 2 (HP#49, p.62) of this article.

Implements of Mayhem (Tools)

Wrenches: 11 mm open/box end 5/32" hex (allen) key (for capscrews) 1/8" hex (allen) key (for setscrews)

Ratchet drivers, sockets, ends, adaptors: 3/8" ratchet driver with 3" extension, 3/8" socket - 11 mm 3/8" breaker bar, C-clamps or vice grips, centerpunch, hammer or mallet

Power Tools

Bandsaw (so much easier than a hacksaw!) MIG Welder Electric drill or drill press with 3/4" chuck and 5/16" bit and chamfer bit. A mechanic's vice is recommended. It helps to have access to: a stationary belt sander, bench grinder and lathe (for radially symmetric parts such as bushings and shafts).

Left: Photol, Frame

Right Above: Frame diagram, welded or bolted assembly using 1" & 1/2" square steel tubing.

Right Below: Photo 2, Frame detail

Preserving Mind & Bod (Mechanical Building Tips)

Here are a few suggestions to prevent skinned knuckles, nicked fingers and lost tempers. Building this vehicle should be a joyful experience, not a hassle. So:

1. Don't rush. Take time to measure carefully, centerpunch holes before drilling and sand off burrs.

2. Don't force. Well-made parts go together easily. If they don't, something's wrong. Find it and fix it.

3. If you get stuck, take time out or ask for help. Don't work while you are tired or frustrated. That is when safety precautions get neglected and accidents happen.

4. Finish your parts. Round edges and corners and bevel hole edges with a chamfer bit. Parts should feel good to handle.

5. Pull, don't push on wrenches. If you have to push, do it with an open hand to save busted knuckles.

6. Use the right wrenches. Don't get seduced by adjustable crescent wrenches. They slip and chew up parts.

7. Use 1/4-28 fine-thread bolts, capscrews and nuts. The fine-threads are stronger. If you can't get them, use regular 1/4-20s.

8. Nylok nuts prevent loosening due to vibration, however don't put them on until the transmission is together and running the way you want. Nyloks are difficult to remove and are only good for 6 installations/removals. While building and testing, use regular nuts and lockwashers.

9. Shaft collars and bushings will jam if your shaft has burrs or nicks. Shaft collar setscrews make circular gouges when torqued down hard. Avoid gouging by grinding the bottom end of the setscrew flat. If you do burr up your shaft, sand it smooth.

10. Install keys when mounting sprockets and pulleys on jackshafts or motor shafts. A setscrew alone won't hold.

Instructions Frame

This frame is welded square steel tubing (Photos 1 and 2). You can also build it out of Jergensen box-beam, (but no Erector sets please!) Attached 3/4" shaft collars hold the main axle. The collars MUST be parallel with each other and the frame members or else you'll be

Left: Photol, Frame

Right Above: Frame diagram, welded or bolted assembly using 1" & 1/2" square steel tubing.

Right Below: Photo 2, Frame detail

GoPower

DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

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