Switchback Prop size

FJR · Jun 23, 2003, 09:55 AM

Switchback is almost ready!

What prop should I use? I am using the stock motor from my GWS Zero. It is the correct gear.

The search function is disabled, sorry for the possible redundant question.

FJ

wherndon · Jun 23, 2003, 10:19 AM

10 x 8

Bil

FJR · Jun 23, 2003, 10:25 AM

That's what I thought. Thanks for the info. I had a 9070 and it looked awfully small.

FJ

Dylwad · Jun 23, 2003, 03:11 PM

APC 10x7 slo fly. Depending on your altitude, i found i liked the D gear ratio and 10x7 prop on 8 720 nimh cells, not quite as much power as the C gear ratio, but still plenty for the switchback, plus your motor lasts longer,and your batteries dont cry after each flight

Dylan

derekl · Jun 23, 2003, 03:13 PM

So, I've seen several recommendations for APC props. I looked at one over at the LHS the other day. How do you mount one of those to the GWS prop shaft? I'm sure I'm missing something obvious. But the opening diameter of the prop is too big. Is there some sort of doo-hickey that fits in there for mounting?

Derek

FJR · Jun 23, 2003, 03:30 PM

Dylan,

Thanks for the info. I'm in Northern Georgia and I do have the "C" gear. From what I've read I should have plenty of power, however I am concerned about frying everything. I will test the setup on the wattmeter and see how everything looks, 7 cells, 8 cells with both props. My father ran the "D" gear and his SB flew with no hints of struggle.

It seems that more power than you need is the thing these days and I have to agree that it nice to be able to throttle out of a low altitude mistake. Fast fly by’s are kinda cool too.

BEC · Jun 23, 2003, 03:46 PM

10X8 GWS or 10X7SF APC. To mount the APC, get the little adapter set that GWS sells.....that's the simplest way. There are lots of other ways.

What are you planning to use as a battery?

FJR · Jun 23, 2003, 04:09 PM

BEC,

Kan950's...It's my understanding that these are a little heavy but work well. I'm open for any suggestions.

Dylwad · Jun 23, 2003, 07:26 PM

i found that the flight performance with 7 Hecells is better than 8 AAA nimh cells, and the weight isnt as much of an issue with 7 2/3A cells. i would run 7 Kan cells on either the C or D drive with the 10x7-10x8 prop. This setup is a pretty good comprimise between power and motor life, i burned up alot of speed 300 motors before i went brushless, and now that i have i take it easier on my brushed motors.

Dylan

FJR · Jun 25, 2003, 07:40 AM

Dylwad,

I guess I'll have to break down and purchase a brushless. I'm sure there would be a great deal of info on which brushles motor is the best for the Switchback.

Jun 23, 2003, 09:55 AM	#1
FJR Registered User Holly Springs, Georgia Joined Jan 2003 192 Posts	Switchback Prop size Switchback is almost ready! What prop should I use? I am using the stock motor from my GWS Zero. It is the correct gear. The search function is disabled, sorry for the possible redundant question. FJ

Jun 23, 2003, 03:46 PM	#7
BEC Registered User Auburn, Washington USA Joined Jan 2001 12,919 Posts	10X8 GWS or 10X7SF APC. To mount the APC, get the little adapter set that GWS sells.....that's the simplest way. There are lots of other ways. What are you planning to use as a battery?
	Latest blog entry: Diverted from R/C to Free Flight (of a...

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Altitude and prop size--confounds comparisons	fregon45	Electric Plane Talk	8	Sep 23, 2007 10:25 PM
Best prop size	Masterpiece	Electric Plane Talk	2	Jun 29, 2001 06:36 AM
Prop size	Masterpiece	Parkflyers	3	Jun 26, 2001 10:44 PM
Astro 15 direct prop size?	Steve H.	Electric Plane Talk	6	May 19, 2001 11:18 PM
Prop size. for 2x4 glider	Dandi6065	Power Systems	0	May 11, 2001 08:30 PM

RCG Sites

About RCG

Features

Tools

Media

Topics

Jun 23, 2003, 10:19 AM	#2
wherndon wild in the park? McDonough, GA Joined Mar 2003 1,613 Posts	10 x 8 Bil

Jun 23, 2003, 10:25 AM	#3
FJR Registered User Holly Springs, Georgia Joined Jan 2003 192 Posts	That's what I thought. Thanks for the info. I had a 9070 and it looked awfully small. FJ

Jun 23, 2003, 03:11 PM	#4
Dylwad ................. Phoenix,Arizona, United States Joined Jun 2002 4,612 Posts	APC 10x7 slo fly. Depending on your altitude, i found i liked the D gear ratio and 10x7 prop on 8 720 nimh cells, not quite as much power as the C gear ratio, but still plenty for the switchback, plus your motor lasts longer,and your batteries dont cry after each flight Dylan

Jun 23, 2003, 03:13 PM	#5
derekl Stick Masher Fort Collins, CO Joined May 2003 227 Posts	So, I've seen several recommendations for APC props. I looked at one over at the LHS the other day. How do you mount one of those to the GWS prop shaft? I'm sure I'm missing something obvious. But the opening diameter of the prop is too big. Is there some sort of doo-hickey that fits in there for mounting? Derek

Jun 23, 2003, 03:30 PM	#6
FJR Registered User Holly Springs, Georgia Joined Jan 2003 192 Posts	Dylan, Thanks for the info. I'm in Northern Georgia and I do have the "C" gear. From what I've read I should have plenty of power, however I am concerned about frying everything. I will test the setup on the wattmeter and see how everything looks, 7 cells, 8 cells with both props. My father ran the "D" gear and his SB flew with no hints of struggle. It seems that more power than you need is the thing these days and I have to agree that it nice to be able to throttle out of a low altitude mistake. Fast fly by’s are kinda cool too.

Jun 23, 2003, 04:09 PM	#8
FJR Registered User Holly Springs, Georgia Joined Jan 2003 192 Posts	BEC, Kan950's...It's my understanding that these are a little heavy but work well. I'm open for any suggestions.

Jun 23, 2003, 07:26 PM	#9
Dylwad ................. Phoenix,Arizona, United States Joined Jun 2002 4,612 Posts	i found that the flight performance with 7 Hecells is better than 8 AAA nimh cells, and the weight isnt as much of an issue with 7 2/3A cells. i would run 7 Kan cells on either the C or D drive with the 10x7-10x8 prop. This setup is a pretty good comprimise between power and motor life, i burned up alot of speed 300 motors before i went brushless, and now that i have i take it easier on my brushed motors. Dylan

Jun 25, 2003, 07:40 AM	#10
FJR Registered User Holly Springs, Georgia Joined Jan 2003 192 Posts	Dylwad, I guess I'll have to break down and purchase a brushless. I'm sure there would be a great deal of info on which brushles motor is the best for the Switchback.