Member postings for Alan Stewart 2
Here is a list of all the postings Alan Stewart 2 has made in our forums. Click on a thread name to jump to the thread.
| Thread: Boxhill by Martin Evans |
| 04/05/2011 16:03:46 |
| Looking at the cranked wheels of GW engine 6412, the balance weights on the cranked wheels are at about 60° rather than 90° to the coupling pin so I now think they are for balancing the eccentrics which are between the cranks. |
| 04/05/2011 15:57:43 |
| 01/05/2011 17:58:34 |
| The real problem with Boxhill wheel castings is, I think, that the weights are 90° out of place. Cranked wheels for small locos have the counter weights at right angles to the coupling pin. The coupling pins are opposite the nearest crank and the weight is opposite the far crank hence putting the weight at 90° to the coupling pin. Box Hill weights are opposite the coupling pins! I suppose the recommendation to machined the weights flush with the wheels is to reduce the out of balance effect that I think the weights will produce. I have already resolved to leave the weights protruding (as I think they would not look good flush) but to drill a few holes in them and add balance weights |
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