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Efficiency, getting real data
#51
Have some nice time with your relatives, see you on october.
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Si ça a déjà été fait, je peux le faire
Si ça n'a jamais été fait, donnez-moi juste le temps de trouver comment !


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#52
The search for a motor continues. After further investigation the old extractor fan motor turned out to be beyond repair. It’s a shame because it had all the right specifications.

The pressures now on to get results because I need to build the hub into a wheel as I may need to use it soon. The bearing is getting a bit loose on the 2012 hub I’m currently using. Will write more about this soon, I’m currently e-mailing Fallbrook. I also need the alternator for a wind turbine.
- Oran
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#53
This project will be delayed for a while.

The hub I was testing the efficiency of is now needed for my bicycle and has been built into a wheel. I'll have to wait and see if Fallbrook replaces my worn-out 2012 model hub.

The search for a motor will continue.
- Oran
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#54
I have now received a new hub and I’m thinking of testing its efficiency. As the efficiency seems to suffer as a hub wears out it makes sense to test one in good condition. One day maybe Fallbrook will bring out a redesigned model of the hub which will be as good as new even after 1000s of miles.

I’m aware of the breaking in period but don’t feel its really an issue. The losses due to seals are relatively small compared to the other inefficacies. Also the seal resistance can vary considerably between hubs. Wheel not spinning freely topic contains more information.

The only thing holding up this project is finding a suitable motor which is proving to be difficult.
- Oran
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