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Proceed with care

I guess I should give the obligatory warning statement about how weld repairing bellows is specialized: it should only be attempted by professionals, don't run with scissors, yadda, yadda. All true, but we both know end-users will, can, and have weld repaired thin gauge bellows, some with success and some with consequential failure.

The base material and welds on a bellows are not static; during operating conditions they flex and bend (see The Bellows Bottom Line, Why an Expansion Joint Works II, Dec. 2005); that's why this welding isn't for rookies.

If it's to be done without the expansion joint professionals then there are some tips that will lean you more towards the success column.

The equipment and people

The thicker the bellows the better. Most industrial bellows range from .016" thick to .125" thick (good luck with the .016"). If you're reading this with a MIG gun in one hand maybe this isn't your calling - this is TIG country.

The best welding machine would be a high frequency unit with a foot control pedal to start the arc at 1 amp or less (no scratch starts!). This helps ease the arc onto the material and avoids blowing an unrecoverable, gaping hole into the bellows (did I mention this should be done off-line?).

Thin gauges are hard to weld and it takes an uncommon talent to do it - but these welders are not found exclusively at expansion joint manufacturers. If you have narrowed your in-house choice between two apparently qualified candidates here's the tie breaker; if one is a week-end kick boxer and the other a closet impressionist artist, pick the one that knows who Renoir is. This is art at its best (or at least its most practical).

Cracks, pin holes, and patches

Cracks can result from a variety of reasons: metal fatigue, stress corrosion cracking, or embrittlement. Weld repairs are not going to make those underlying conditions go away, so the repair should always be considered a temporary fix.

First dye pen the crack to determine how far the tips extend. At the end of each crack drill a hole twice the thickness of the bellows wall. This hopefully will keep Leonardo from chasing cracks all day long.

It is nigh to impossible to have a back purge, so the weld will sugar on the back side (remember - temporary). The weld should be a full penetration single pass. Any weld build-up will create a stress riser so blend as smooth as possible. Sand afterward if necessary.

Pin holes are easier. I've seen a field guy use (and I am not making this up) a stainless sheet metal screw to plug a hole, which couldn't be welded, while on-line.

Using a patch on a sizable hole is the trickiest. The patch needs to be a near perfect fit in order to run a fillet weld with minimal heat input around the outside. Patches are the most temporary of all fixes due to the thickness build-up and fit.

Good luck, and don't run with scissors.

(to view this article with original graphics link to oakridgebellows.com under technical publications)

For the original article with graphics, and other metal expansion joint article downloads visit the Oakridge Bellows website at http://www.oakridgebellows.com

Oakridge Bellows is a manufacturer of round and rectangular metal expansion joints located in New Braunfels, Texas.

Appropriate Travel Photography Pointers

While winding along with your digital camera, you can utilize it to serve you all the way by a range of possible harms that might occur. It's moreover significant to acquire many safety measures to guarantee your camera and associated apparatus will be protected as you journey. Journey taking pictures needs several particular ways.

Wandering along with your camera can be a stressful practice for persons not associated with camera-take journey. Worries of break and stealing consider greatly on the mentality of wandering lens man. There are numerous methods to build your next move along with your camera additional of a joy and fewer of worried condition.

Here are digital cameras wandering guidelines for creating the mainly of your camera's capacities, whereas as well defending it, throughout journey taking photographs.

Evading weather troubles. The weather conditions can be undeterminable while you're journeying. There's moreover a possibility you'll be close to water or cruel warmth. If you don't have an all-weather or waterproof camera -- if you aren't sure, you probably don't comprise one -- you are able to attempt maintaining the camera affixed in a plastic container to defend it from wet. Maintain it draw near to your body part, to shield it from severe freezing. Discontinue make use of it by the time you're going back indoor, if you observe compression lying on or within the camera.

Lock your gear/bag

When journeying in an assemblage (similar to an airline), think about a little security device for your camera purse. This can aid avoiding expert stealers from "pick your pocket" as bearing the carrier on your shoulder. Furthermore fastening your equipment while leaving in a hotel area is an excellent initiative. You could make use of a laptop security device wire throughout the zipper hauls to lock the bag to a strong portion of furnishings. It is frequently secure to depart your equipment in the case of your vehicle than unsafe in an inn area or in the frontage of the automobile

Backing up images. Even if you contain several memory storages through your camera, it's an excellent thought to support the information on the memory storage. Finally, those holiday photographs are not disposable must the memory storage shatter or else get misplaced. Some establishment that permits you to create photographic prints from your digital photographs must be capable to reproduce the pictures on memory storage to an information CD or DVD.

Digital Battery chargers. The majority battery device chargers will operate through the 220V/50Hz electric current established in Europe. Assure the invert of your machine charger to be confident. You'll also involve a transition plug to link through the plugs exercised in the European land you're tripping.

Insuring your equipment. Well ahead of you tour, get in touch with your pledge business as well as make certain your taking pictures apparatus is enclosed while you take a trip. Be precise regarding what gears you'll be taking and wherever you'll be traveling. Since take a note of successive data and representations of each and every one of the apparatus. You may require purchasing a traveler to cover up your picture making apparatus.

Permanently label each piece of equipment. The majority of stealers will discard a part of apparatus once they understand it is noticeable. Write down your name (and telephone number if there is room) lying on every portion of your apparatus. You be able to make use of an undying ink indicator (photographic pens actually immerse into plastic) otherwise include a specialized merchant incise the data.

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How much is a 383 block worth?

I have a GM Goodwrench crate engine block 2 piece rear main seal, that has been prepped for a 383 and I needed to know if anyone could tell me about what this block would be worth. It is a 4 bolt main, bored 0.030, stroker clearanced, new cam bearings, new freeze plugs, magnafluxed, baked. It's basically brought back to almost new condition. The reason I am asking is that I have had a lot of people want to buy it from me, but I don't know a price to sell it for. I need to sell it that's why I was wondering. Please post what you think I should sell it for. If you need anymore info on the block just ask. Thanks
The reason I say 383 is because it is clearanced for a crank and pistons for a 383. But it is indeed just a 5.7 Liter bored.030 = 355 cubic inches. but why not go 383
It is just the block, completely prepped, unpainted, cleaned, with all main caps. The machine shop work totalled around $800.

I am assuming it's a bare block, not a built short block, it's probably about $200.00, they are pretty cheap through places like Summit racing as a short block 383, so that's probably about top dollar. this is the most common chevy stroker motor.

Maximize the Life of Grounds Maintenance Equipment
Manufacturers recommend maintenance schedules and key maintenance procedures for the pieces they sell to government fleets. Some also offer software programs or online support to help monitor usage, track costs, and budget for replacement.

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