I have recently been cleaning up and exploring an 8" Husqvarna Dux which has thrown up a couple of interesting factors.The re-assembly proved to be a little more involved than I expected, it seems that the side frames need to be quite accurately aligned both horizontally and vertically otherwise the cutting cylinder will not rotate freely. I had assumed that by just bolting on the bottom block and frame stay it would more or less work. There is little or no play with the bolts for the bottom block but clearly quite a lot of adjustment possible either end of the frame stay.
It also appears that the cutting cylinder fits and works much better one way round rather than the other, although one might think that it made little difference. Having taken it all apart and put it back together several times I have concluded that the method is to bolt up the bottom block slightly less than finger tight, get the side frames parallel by eye, then adjust the inner frame stay bolts while spinning the cutting cylinder. The cylinder is then roughly equidistant between the side frames and rotating freely. Then tighten the bottom block getting the bottom blade parallel with the cutting cylinder before tightening the outer frame stay bolts.
Now, have I missed a trick or is it really just down to a combination of trial and error and experience ? This large degree of adjustment on the frame stay is not something I have particularly noticed before on sidewheel mowers. I'll have to check some other makes but it appears not to be so with Ransomes machines of the same period. I'm thinking that this must have been a consideration in the efficient mass production of The Dux.
For those with an interest in the alignment of the bearing oil way here it is on this model :
Also shows the rocking movement in the bottom block to achieve the correct set for the bottom blade.
Noted stamped on all the blades is 24/25 which I take to be the date they were produced. This was unexpected as I understood the model to date from the 1930's. Surely they wouldn't have been hanging around for that length of time before being used. The wooden T handle has a metal collar and bolt, a feature which I thought more usually related to the post war era. I have however subsequently discovered that Husqvarna were producing mowers from 1918 when they acquired the firm of Norrahammers Bruk. I am currently in contact with Husqvarna hoping to get more of their mower history as there is very little on the internet.
Here it is all back together :
And a period advert, perhaps from the '30's ?