02-01-2022, 03:14 PM
(This post was last modified: 02-01-2022, 03:30 PM by Jeff Taylor.)
Hi Jon,
I've just removed the top outer tin plate plug from my Lucas C35A dated 11 / 35. As Reckers says there does appear to be a small disc felt pad at the bottom - it's definitely not a gauze.
Over the past almost fifty years I've messed around with a lot of 1930's Morris 8 Lucas C45 dynamos which are very similar to those fitted to the Big 7 and Austin 8. These Lucas C45's also have and have always had oilite bushes fitted at the commutator end and none that I've ever worked upon have had a hole drilled in the oilite bush - in fact I've a boxed N.O.S end plate and the bush in that isn't drilled. The oiling process on these C45's is by means of a screw-in hollow brass tube 30mm long x 13mm diameter and within the tube sits a spring with a felt pad attached to the end - the oiled felt pad simply bears upon the outer skin of the oilite bush. There's no need for a hole in the bush because the oilite material absorbs oil into its pore structure - all you need to do is keep the felt pad on the end of the spring charged with oil, don't let it run dry. For the C45's oiler Lucas recommend two drops of thin machine oil every 1000 miles - obviously the thin machine oil is absorbed into the oilite bush better than a thicker oil.
The brass oiler on C45's below:
Screenshot 2022-01-02 at 14.01.44.png (Size: 520.59 KB / Downloads: 114)
Jon,
If you're worried about the efficacy of your old oilite bush, A7C stock new ones part no. BG154r Lucas C35A / C35M rear bush 1932-39.
I've just removed the top outer tin plate plug from my Lucas C35A dated 11 / 35. As Reckers says there does appear to be a small disc felt pad at the bottom - it's definitely not a gauze.
Over the past almost fifty years I've messed around with a lot of 1930's Morris 8 Lucas C45 dynamos which are very similar to those fitted to the Big 7 and Austin 8. These Lucas C45's also have and have always had oilite bushes fitted at the commutator end and none that I've ever worked upon have had a hole drilled in the oilite bush - in fact I've a boxed N.O.S end plate and the bush in that isn't drilled. The oiling process on these C45's is by means of a screw-in hollow brass tube 30mm long x 13mm diameter and within the tube sits a spring with a felt pad attached to the end - the oiled felt pad simply bears upon the outer skin of the oilite bush. There's no need for a hole in the bush because the oilite material absorbs oil into its pore structure - all you need to do is keep the felt pad on the end of the spring charged with oil, don't let it run dry. For the C45's oiler Lucas recommend two drops of thin machine oil every 1000 miles - obviously the thin machine oil is absorbed into the oilite bush better than a thicker oil.
The brass oiler on C45's below:
Screenshot 2022-01-02 at 14.01.44.png (Size: 520.59 KB / Downloads: 114)
Jon,
If you're worried about the efficacy of your old oilite bush, A7C stock new ones part no. BG154r Lucas C35A / C35M rear bush 1932-39.