The Unofficial Mamod and Other Steam Forum

johnreid · Posted: Sat May 10, 2008 12:16 am Post subject:

THE Steam dome is attached via a hollow steam screw. The screw is hollow and has some holes in the sides to allow steam to pass from the Boiler to the Steam line. This takes two gaskets and works quite well, as of a fact new Jensens still use the same set up, why change a good thing.

Asbestos in the sheet form is harmless, it is the dust that is harmful. You will inhale more Asbestos dust changing a flat tire than you would working on an older Jensen.

Breathing Meths and Esbit fumes is far more harmful than that. The most harmful thing I did today was when I spray painted and unintentionally inhaled Acetone paint thinner from the spray paint in the air.
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kusuchi · Posted: Sat May 10, 2008 12:59 am Post subject:

johnreid · Posted: Sat May 10, 2008 1:10 am Post subject:

The Rivets get peened, and yes not only do I have some on hand, but I ordered some when I knew the engine was coming.

I guess that gloss black paint is gloss black paint whereas a lithographed antique tin toy is another animal. Again though, Roger restores to new, I restore to well cared fro condition. I do like mine to look like they are not brand new.

The hollow steam screw on the tube type sightglass is the exact same part.

One can see how I do te rivets on my Jensen Project 35 page, or stay tuned as on Sunday I will take some more pictures.

I believe that the cord is original on my other Cast Base 25 and it shows no cracks or fatigue, it is about 6 years newer too though.
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Stitch · Posted: Sat May 10, 2008 1:41 am Post subject:

John, your collection is growing and growing

All the best with the restoration. I am sure you will have it up and running soon.

steamyman · Posted: Sat May 10, 2008 2:43 am Post subject:

looks good John, bet you can't wait to steam it.

Les · Posted: Sat May 10, 2008 6:43 am Post subject:

That's exactly what we need, a step by step guide of how to strip a Jensen.

Thankyou.

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johnreid · Posted: Sat May 10, 2008 12:17 pm Post subject:

TA

I have done this before with my 35
http://www.freewebs.com/johnreid/jensenproject35.htm
Start to finish complete with a video at the bottom of the page.

The boiler on this one is really corroded. I am now wondering if maybe this particular engine wasnt a collection of left over parts that someone had after fixong up a bunch of older Jensens. No big deal though, as long as I can get it to operate well, I will be happy. However I will be on the lookout for a replacement tube sightglass Boiler
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oldstuff · Posted: Sat May 10, 2008 3:13 pm Post subject:

That's coming along well, John. Look forward to it running.

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johnreid · Posted: Sat May 10, 2008 5:53 pm Post subject:

I have to admit that the photos stopped as I didnt want to go out and buy new batteries. I was installing the sightglass and quickly realized that the bottom sightglass thread is stripped out, all I could do is spin the steam screw but not purchase any threads

Dont ask me why, but I decided to try it without the guard, and now have enough thread to tighten it down snugly. Literally hanging on by a thread. But as long as it will tighten enough to be steam tight, that is all that matters.
The handles were both stripped out and had to be replaced, I made new ones from a dowel.
I will post some pictures Monday.
I do think that this one needs to be steamed before I spend money on a Safety Valve as if the Boiler is stripped out, I might find a new Safety Valve when I find a replacement boiler, but lets hope it holds pressure without any leaks, wont know till Monday when the paint is cured enough to heat it up.
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madeinenglang · Posted: Sat May 10, 2008 6:17 pm Post subject:

I agree with mm asbestos is safe just not long time holding or braking it or smashing it I use to work in a factory that used to make washer and gasket and yes it was asbestos

johnreid · Posted: Sun May 11, 2008 12:29 pm Post subject:

I assembled it this morning, put water in the boiler and plugged it in. It was heating just fine, making the normal warming up noises when all of the sudden sparks flew, the heating element is shot

I need to decide how to go about finishing this, do I wait till I can find a replacement boiler or do I just go ahead and buy a heating element. I will probably order a new heating element on Monday, and a Safety Valve, but was hoping that I would luck out on this one. As the saying goes, you win some, you lose some.
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Les · Posted: Sun May 11, 2008 8:23 pm Post subject:

Thats not good news at all.
Are elements expensive??
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johnreid · Posted: Sun May 11, 2008 8:35 pm Post subject:

I can get one for $35 and I do need a Safety Valve so I guess that i will end up spending about $50 on it but once done it should be worth it, I didnt save any by getting it at a reasonable price though and the Boiler is kind of poor looking for the total investment. That is the risk one takes when buying on Ebay. If I had found one for sale through a Dealer it would have cost more.
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made-in-england · Posted: Sun May 11, 2008 8:48 pm Post subject:

If your concerend about the asbestos out of your boiler we had all three boilers stripped to rid of it.. Think it was about 5 tones im told ?!?!
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