EagleTree E-Logger RPM sensor accuracy - RC-Monster Forums

rabosi · 04.11.2008, 06:03 PM

I did read that but had speed on the brain. Must be all the benadryl I'm on.

Actually I was hoping it did speed also.

tom255 · 04.15.2008, 05:48 AM

OK i made software and firmware update to my eagletree and still RPM's is way high. And one issue more i see 65K RPM spikes, is this normal?

I changed gearing to 46/14 on HB LSP and car still pretty fast and i start to think maybe i have wrong motor :) not 9XL maybe 6XL

Any way to detect it?
Maybe measure no load current? but on what voltage?

speedracer1129 · 04.16.2008, 07:26 AM

Quote:

Originally Posted by tom255

OK i made software and firmware update to my eagletree and still RPM's is way high. And one issue more i see 65K RPM spikes, is this normal?

I changed gearing to 46/14 on HB LSP and car still pretty fast and i start to think maybe i have wrong motor :) not 9XL maybe 6XL

Any way to detect it?
Maybe measure no load current? but on what voltage?

The spikes at the beginning of the session is normal. Yoy have to graph the run and read the info within the run to see actual info.

tom255 · 04.16.2008, 07:34 AM

OK I see, Thanks

But any advice about motor? Can I measure some parameters to detect motor turns?
Lets say, no load current on some volts?

rabosi · 04.16.2008, 09:42 AM

Quote:

Originally Posted by tom255

OK i made software and firmware update to my eagletree and still RPM's is way high. And one issue more i see 65K RPM spikes, is this normal?

I changed gearing to 46/14 on HB LSP and car still pretty fast and i start to think maybe i have wrong motor :) not 9XL maybe 6XL

Any way to detect it?
Maybe measure no load current? but on what voltage?

You took a 6 for a 9?

(Sorry, I couldn't resist)

tom255 · 04.16.2008, 10:16 AM

Quote:

You took a 6 for a 9? (Sorry, I couldn't resist)

And if its true its explains why my system still so hot and why i burned 2 BK9920 on 5S. And it was geared to 40mph brians calc

. I am actualy never measured top speed only raced. And if its right it means that my truck was geared before 57mph.

OK KB45-10L motor just arrived which is ~1800KV so i will hook that motor and measure No Load Current and RPM and try Compare with feigao