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#1 Stark Flyer Aug 16, 2005 11:50 AM

Technical Links
 
Thought I would start a new thread that has links to technical information. I stumbled across this one when I was doing a Google search for something else. It is about paper airplanes and has some good info on Reynolds number and other wing information.

http://www.flyingtoys.com/pages/aerody.php

Dick

#2 PerfectStranger Aug 17, 2005 04:26 PM

motor/prop combo test values
 
http://www.flyingmodels.org/motortest/

Great benchmarks to use when thinking about buying a new motor or prop. He updates it periodically. Use it and love it or else!

matt

#3 kdahlhaus Sep 07, 2005 04:16 PM

The Bolly Book - more info than you ever cared to know about props
http://www.bolly.com.au/book/

#4 kdahlhaus Sep 07, 2005 04:25 PM

This site has formulas, theory, and even a step-by-step guide to desiging rc models:
http://www.airfieldmodels.com/

#5 sgtdirt Sep 07, 2005 07:35 PM

Quote:

Originally Posted by kdahlhaus
This site has formulas, theory, and even a step-by-step guide to desiging rc models:
http://www.airfieldmodels.com/

by far the best site!
i've emailed him a couple of times with build questions. he's pretty promt with answers.

here is were i got my CDrom kit.
http://www.strongrcmotors.com/

a complete idiot (like me) could follow the directions. super simple.

#6 SaulOhio Sep 07, 2005 07:54 PM

I have been using this one lately. I burned out an outrunner motor, and have to rewind it. http://www.gobrushless.com/

There are a few websites to order foam.
http://www.flyingfoam.com/foamsheet.html
http://bamart.com/DepronUSA
http://www.cncfoamfactory.com/

#7 Stark Flyer Oct 05, 2005 04:11 PM

Motor spreadsheet info. Go to this link and select motor chart:

http://parkflyermotors.com/secure/sh...m.asp?recid=11

Dick

#8 kdahlhaus Oct 07, 2005 08:27 AM

Fiddler's Green plans to Foamie Guide
 
Tyson's 'How to build a R/C plane using Fiddlers Green papermodel plans'

Step by step guide going from Fiddler's Green plan to brushless spitfire:
http://users.lennokit.net/tyson/Spit/RCPic.php

#9 sgtdirt Oct 16, 2005 12:54 AM

i didn't know where to post this info so here it is.

i spoke with the guy at Parma hobby Sat. and he said he was going to have a CDrom motor winding class. Tommy, i guess you mentioned it to him. although he didn't have dates, he said it should be soon. he will also provide the kit. i'm assuming the class will cost just a few dollars over kit price.
BTW, for those of you (like me) who didn't know, Parma gives a 10% discount to club members. i guess being a NCEF member has some percs after all.

#10 Tommy632 Oct 16, 2005 10:40 AM

Quote:

Originally Posted by sgtdirt
i didn't know where to post this info so here it is.

i spoke with the guy at Parma hobby Sat. and he said he was going to have a CDrom motor winding class. Tommy, i guess you mentioned it to him. although he didn't have dates, he said it should be soon. he will also provide the kit. i'm assuming the class will cost just a few dollars over kit price.
BTW, for those of you (like me) who didn't know, Parma gives a 10% discount to club members. i guess being a NCEF member has some percs after all.


Jack, we are going to do a clinic. Check Jim's thread. Parma Hobby has asked nothing from us at this time. Their really treating us good.

Tommy

#11 OhioPete Oct 20, 2005 12:02 PM

http://sky.prohosting.com/air2/cg_calc.htm
Neat page with a calculator to help you determine CG and other things when you input your measurements. Could prove useful to scratch builders.

#12 sgtdirt Nov 10, 2005 07:05 PM

anyone know of a link for the eflite 370. i need to know how may volts it will give me.

#13 RktMan Nov 10, 2005 07:35 PM

http://www.horizonhobby.com/Shop/ByC...rodID=EFLM1000

#14 sgtdirt Nov 10, 2005 08:15 PM

my mistake...i need to find out how many watts (not volts) i can get with a 3S lipo and this motor. will it get 80-100 watts?

#15 RktMan Nov 11, 2005 03:38 AM

I put the 370 4100 Kv in MotoCalc with a 9 x 6 prop and a 3s 1320 Lipo:

Batt Amps = 25.7
Motor Amps = 25.7
Motor Volts = 9.3
Input (W) = 239.7
Loss (W) = 206.3
MGbOut (W) = 33.5
MotGb Ef(%) = 14.0
Shaft Ef(%) = 11.7
Prop RPM = 5553
Thrust (oz) = 9.6
PSpd (mph) = 31.6
Prop Ef(%) = 0.0
Total Ef(%) = 0.0
Time (m:s) = 3:05

With a 12 x 6 prop.....

Batt Amps = 24.7
Motor Amps = 24.7
Motor Volts = 9.4
Input (W) = 232.4
Loss (W) = 214.7
MGbOut (W) = 17.7
MotGb Ef(%) = 7.6
Shaft Ef(%) = 6.5
Prop RPM = 3062
Thrust (oz) = 9.3
PSpd (mph) = 17.4
Prop Ef(%) = 0.0
Total Ef(%) = 0.0
Time (m:s) = 3:12


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