Sunny Boy wrote:Vance,
I'm not sure. All the info I've seen says cast iron shrinks 1/8 inch per foot. However, the new cast iron grates I got for my 118 from Bryant Stove are almost two feet long. They said they were cast using an original set of 118 grates, so the new ones should be almost 1/4 inch shorter than originals. They aren't. They are only about 1/8 inch shorter than my original grates.
Donna at Bryant said they use two foundries. Not sure which one did these grates.
I think the best answer is to ask Tomahawk how much to compensate when you talk to them Friday.
I saw Basil making a pattern from a broken grate on one of my trips up there. It would be very easy to make them a little longer when putting the broken parts back together. Might have done that with yours?
Yes, the two middle grate bars show signs of repair to some of the damaged triangular teeth. But the two outer grate bars show no signs what-so-ever of damage, or having been cut, repaired, lengthened, or any material added to the ends.
And adding material to the ends wouldn't work because there is a flange to locate the gears on one end, and two flanges on the other end that straddle the rack to keep the bars in position in the rack. Material would have to be added in between those points to keep the bars close to alignment in the rack. Nothing has been added. The spacing of the teeth, and the shaft lengths in between the teeth and the locating flanges, are exactly proportional to my originals - just scaled down so that the bars are about 1/8 inch shorter over-all.