The restoration of the Kemna (2005)
We normally work on Wednesday evening with 6 to 8 people on the
restoration. Some die-hards work on other evenings as well.
|3rd of March 2005
On the 2nd of March we got a message from Lloyds Register that the design of the boiler has been approved as in compliance with the regulations for pressure vessels
It means that we can start to finish the work on the boiler and have it pressure tested at 18 Bar.
Once she has been steamed and the safety valve is tested we will get a final approval
We hope to have this finished around the 1st of July 2005
|28th of April 2005
The gears have arrived from Germany.
It is all very well engineered and made to an outstanding quality.
|A detailed image of the gears.
Gerard Leeraar has now carried out work for several different engine owners. If you would like to get in touch with him, he can be phoned on 00 49 236364448
|25th of May 2005
The first stays are mounted !. ROKEM BV made the first 36 stays for us, the other 68 will follow
|This is the blank of one of the satellite wheels of the
differential. Sanders in Goor will cut the teeth soon, so the differential
can be reassembled.
We have now a Nuffield 10/60 from 1965 to move the portable around. Much bigger and stronger then the Deutz we had before
Not much progress was made during the summer time on the restoration. Mainly because we took part in many events with our portable. This image was taken in August at a harvest event where we were lined up with a big threshing machine and a bailer.
We now will continue with the work on the Kemna
|All 102 stays are now in place, made by ROKEM on their numerical controlled latches .|
|This broken support was fabricated from scratch by one of our volunteers. A real piece of craftsmanship !|
The next few images will give an impression of the casting of a new differential wheel at Sanders in Enschede .
|Polystyrene is used as a one time mold.|
|The coating will prevent the sand from sticking onto the metal|
|It is hot !
|Pouring the melted metal into the form|
|The process of cooling down is ready to start|
|After 24 hours the form in opened up and the sand removed.
What is left is the raw model of the new planetary wheel.
|3, 4 and 5 November
In a well planned 3 days operation all the stays were cold riveted with a riveting hammer driven by compressed air
|Paul and Rik at work on the Friday morning. The noise is unbearable so the use of ear protectors is a must !.|
|It is very hard work, as the hammer is beating with force and needs to by hold in a firm grip all the time.|
|A 35 kg shaft was used as a counter weight to give the
strokes more impact. With a piece of wood we even fabricated a lever
Boiler maker Bicknell told us before we started the job:
"A boiler maker needs to be strong in the arms and weak in
|Job done at Saturday the 5th of November at 16:15 Hours.|
|The cup dies would brake occasionally.
We probably made them too hard.
|Hardening a cup tool. We used high speed steel 1.3343|
|The massage is clear if you are hardening high speed steel
as a pure amateur
Keep some spares ready !
|24th of November 2005
Rolling in the fire tubes
|We used an electrical driven motor. At a pre-set force the motor will automatically start to reverse. This ensures that all pipes are rolled with the same force.|
|The tube expander is brought into place|
|8th of December 2005
Out again after three years ! A provisional shaft from a mud spreader is used at the back end.
|Continue with 2006|
|Back to 2004|
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