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This thread is privately moderated by Dr Kiwi, who may elect to delete unwanted replies.
Dec 11, 2008, 05:22 PM
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Dr Kiwi's Avatar
Are they really? - maybe a gram or two, but not more.
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Dec 11, 2008, 05:25 PM
I steer with my thumbs
CuStOm's Avatar
Look at the 2814/8. There were others but I forgot which ones.
Dec 11, 2008, 05:25 PM
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Dr Kiwi's Avatar
Are they really? - maybe a gram or two, but not more. Robert entered what was on my spreadsheet.. but during my "proof reading" I may have altered some a fraction to match what I measured for my data tables. I know there was one, now corrected - 2208/8 which had a typo of 47g rather than 38-39g.

2814/8 - you are dead right on that! 103g, not 50g
Dec 12, 2008, 03:19 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
Two to-do lists of motormanufacturers, motortypes etc. Both compiled by Louis Fourdan. No tests.

Electrofly
-> telechargement
-> Outrunners EXCEL data base
and/or
-> Inrunners EXCEL data base

Prettig weekend Ron
Dec 12, 2008, 08:07 AM
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rgoble's Avatar
It turns out that all of your entries for the 2814/8 had a weight of 103g except one, which had a weight of 50g. Based on the way the data was sorted when I imported it the row with 50g must of been first.
Dec 12, 2008, 10:05 AM
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Dr Kiwi's Avatar
Like all complex compilations, I'll bet we keep on finding and correcting minor glitches like this for a long time! Actually, I'm impressed that there are not more.
Dec 12, 2008, 10:38 AM
www.gobrushless.com
Robert
when you get a chance take a look at the thrust data in the MicroDAN motors....the thrust in oz is entered in the database as grams.
Dan
Last edited by Micro Dan; Dec 12, 2008 at 10:44 AM.
Dec 12, 2008, 10:45 AM
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Dr Kiwi's Avatar
Only incorrect for the 2535 I think.

We'll add my data for the 2003 etc later too.

I've never test run the 1490... got a loaner, Dan?
Dec 12, 2008, 10:56 AM
Night Flying
Ron H's Avatar
Nice work guys. This will save a lot of time when comparing motors.

The MicroDAN 2535kv pitch speed and thrust results seem a bit low.

Nevermind
Dec 12, 2008, 11:53 AM
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rgoble's Avatar
Dan,

Sorry about that, its fixed now.

Robert
Dec 12, 2008, 02:54 PM
I steer with my thumbs
CuStOm's Avatar
I could have swore you tested a CustomCDR triple Dr. Kiwi, or am I loosing it? :P
Dec 12, 2008, 06:17 PM
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Dr Kiwi's Avatar
Quote:
Originally Posted by CuStOm
I could have swore you tested a CustomCDR triple Dr. Kiwi, or am I loosing it? :P
No, you are not losing it - I did test some doubles and triples, but that was back in the Dark Ages and those prototypes probably bear little resemblance to today's production versions - if you want to convince Jon/Morphs to send me some test samples I'd be happy to generate some data!

I do have some data for Bullet Singles (Cool, Hot and Super Hot) and for Baby Bullets (Cool and Hot) which we have not yet entered.

Cheers, Phil
Dec 13, 2008, 04:19 AM
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Fourdan's Avatar
Hi Phil and others

In order to subscribe.
I am Louis the "french tester"

Maybe with bigger benches (also pushers) that my friend Phil.
So if you are a european maker, it could be easier to send samples to me.
If you are a chinese maker, maybe it is the same distance.

Interested also to test new props to incorporate in my "brand X calc".
Regards
Louis
Dec 15, 2008, 03:28 PM
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rgoble's Avatar
Do you guys think itís worth calculating and displaying the efficiency for each of the tests?

Robert
Last edited by rgoble; Dec 15, 2008 at 03:54 PM.
Dec 17, 2008, 04:00 AM
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Fourdan's Avatar
Quote:
Originally Posted by rgoble
Do you guys think itís worth calculating and displaying the efficiency for each of the tests?

Robert
Hi Robert
If you have "calibrated" props
Power out = function (rpm) you could indicate the ratio
Power out / Power in versus rpm (or for one given rpm)
To calibrate power out prop: 2 ways
a) using a dyno bench
b) by evaluating power losses (iron, copper, ESC)
Louis


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