Hi Bendik,
I'd forgotten about those sheets. The 127 200 series is not the D version. The D stands for double magnets. Worth remembering the sheets are a motor driving a generator at constant voltage from a power supply so no voltage sag like a lead acid battery. Also the efficiency is the product of the motor and generator as I recall so if a motor at a given steady voltage and load (generator) then say one is 93% efficient and the other the same it is 0.93 X 0.93 = 0.86
Think I have that right without more than a glance at sheets. The trick though with props and gearboxes is to figure out a good voltage and load (amps) combination that will give you efficiency at the thrust you need. I learned by doing sums then proving those with practical experiments.
Here's a fun calculator for electric bicycles which kind of gives you insight playing with motors etc.
John R
__._,_.___
| Reply via web post | • | Reply to sender | • | Reply to group | • | Start a New Topic | • | Messages in this topic (49) |
Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.
.
__,_._,___
No comments:
Post a Comment