Jack I’ve been working through the methods you set out in your post yesterday and this technique works amazingly well. I’ve been able to identify multiply combinations of favorable gear sets to drive the motion of the inner planets and moon of Earth to the desired accuracy. I had to set up a...
Great additional information OldEng63, that really helps me with the finer design considerations. I'll just summarise a couple of things for you information and fire off some questions that result. So firstly;
I'm planning to CNC the gears on a Sherline lathe/mill system out of 3.175mm (or 1/8"...
Thanks very much for taking the time to reply in such detail jack, you're obviously a very proficient mathematician - I on the other hand am a bit slow with picking it up especially concept that are Not as formulaic in approaches as perhaps any area such as mechanics. Let me work thought the...
Thanks again Jack, unfortunately this is sinking in quite slowly with me and I have another question related to the above example where we have the 127:10 and 20:19 compound gear chain giving us the desired 13.36 ratio.
Let's imagine for whatever practical reason that a 127 tooth gear is to...
Hi Jack,
So when you developed the 127/10 which is a ratio of 12.7 and multiplied it by 20/19 which is 1.05263 to get 13.3634 what does this do to the gear train in real terms?
Is there now a 127 toothed gear meshed to a 10 toothed gear and then a 20 tooth gear on the same shaft as the 10...
The principal of correcting ratios is very cleaver. I think 254 teeth might be pushing it a bit. Can this principal be applied to compound gear trains and if so would you be kind enough to show a worker example?
How would one add multiple sets of correcting gears As you suggest?
Thanks for the replies chaps. I see from the rationalization that it is very hard in practice to make accurate systems that are practically machinable. I take it people have always just dealt with this error in clockwork mechanism or designed units of measure that divide rationally into one...
Hello Ladies and Gents,I am look for some help with designing the gear trains for an orrery (a mechanical model of the solar system) I am planning. I need some advice on how to go about calculating the specification of the gears in the mechanism which I will machine. I will use cycloidal teeth I...