Not quite true. SNCF found it advantageous to remove syphons from 141Rs but found the reverse with 141Ps. Most (if not all) surviving 141Rs still...
A heat pipe with a fan is probably more suitable, as used for most (all?) computer processors. A Peltier is much less efficient but has the...
Franklin's penultimate valve gear project also ended in failure, although, again it wasn't due to the company. C&O had had good results with Type...
Except that poppet valve gear's main advantage is at high speed which the P2 was not intended for. In France, where passenger trains at the time...
The problem with all these Franklin designs is that they appeared at the end of steam in the USA and therefore their use was very limited....
The cam is part no 55a in sheet 4 of US2441199A.
Taper is probably the wrong description. Franklin B is probably analogous to automotive VTEC as here:...
For completeness, here are the patent details for Franklin A: Drive system: US2183327A.pdf Reverse Gear: US2385957A.pdf Just out of interest,...
No, I couldn't see any obvious taper. I'll have another look tomorrow - too late tonight!
There is a difference. For the Franklin files, Google doesn't download, presumably just because it is http and not https. I just used the address...
Maybe but I had the same issue with downloading a motor insurance certificate today which definitely was https and I could see that the file had...
This might be what you are looking for: US2441199A.pdf This is the drive system. US2441156A.pdf This shows the valve arrangement. This is the...
I think you will find that the original boiler is still on the loco because, at the time, it required less time to get to a working condition than...
I found this from here: https://prr.groups.io/g/PRR/topic/t1_poppet_valve_issues/90638011 'Reviewing the correspondence of the day suggests that...
All a bit OTT. The originals would probably have been plain straps riveted to the door. The hinge ends would then have been adjusted with heat.
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