New Convair Pogo - Page 2

DT56 · Nov 28, 2008, 10:25 PM

Quote:

Originally Posted by SilentHunter

I have to have them, the idea on my model is scale sized props and contrarotating. I'm trying to recreate the real one as close as possible.

Not completely authentic I hope, since the full scale version was considered a failure by the Navy!
http://en.wikipedia.org/wiki/Convair_XFY

Axi has this powerplant for C/R props.

edf nut · Nov 29, 2008, 08:09 PM

Cant wait to see this one go

SilentHunter · Nov 30, 2008, 10:09 AM

That motor is not a CR motor, only 2 outrunners together turning the same prop.

Himax was supposed to make a similar sized one as I have, I have yet to see it though it has been under the "to be release whenever category"

DT56 · Nov 30, 2008, 09:00 PM

Quote:

Originally Posted by SilentHunter

That motor is not a CR motor, only 2 outrunners together turning the same prop.

Himax was supposed to make a similar sized one as I have, I have yet to see it though it has been under the "to be release whenever category"

According to Hobby Lobby, the 5330/20 Double can be run as a C/R powerplant.

AXI 5330/20 Double
PM5330D Model Motors AXI Gold "5330/20 Double" OUTRUNNER
Motor ..... $ 975.00
AVAILABLE NOW
Specs: 55 oz. weight, 2-1/2" diameter case, 5-3/4" combined case length. Motor mount is between the 2 motors (Custom mount must be fabricated for individual airplane by modeler). The two motors come ganged together to drive a single prop. Can also be used to drive 2 propellers in a counter rotating setup. For use with 2x10S Lithium Polymer packs and a 24x10" wood prop. Check out the RCU Review of 5330/20 Double on an Edge 540.

Here's a link to several different Himax C/R motors.

http://www.maxxprod.com/mpi/mpi-266.html

Brandano · Dec 01, 2008, 04:18 AM

Quote:

Originally Posted by DT56

Not completely authentic I hope, since the full scale version was considered a failure by the Navy!

I have to disagree with that. The plane itself wasn't considered a failure, and among the two contenders for the navy contest it was the only one that managed to actually fly through both conversions, even though it logged fewer flight hours. The real reason why the project was ended was that even with the advantage of VTOL capacities a turboprop plane couldn't hope to be a match for the jets that were starting to appear, and the steam powered catapults were proving quite sufficient to the task of getting a plane off a carrier's bridge

DT56 · Dec 01, 2008, 11:23 AM

Quote:

Originally Posted by Brandano

I have to disagree with that. The plane itself wasn't considered a failure, and among the two contenders for the navy contest it was the only one that managed to actually fly through both conversions, even though it logged fewer flight hours. The real reason why the project was ended was that even with the advantage of VTOL capacities a turboprop plane couldn't hope to be a match for the jets that were starting to appear, and the steam powered catapults were proving quite sufficient to the task of getting a plane off a carrier's bridge

Not my opinion, just that of the Navy!

SilentHunter · Dec 01, 2008, 02:47 PM

Quote:

Originally Posted by Brandano

I have to disagree with that. The plane itself wasn't considered a failure, and among the two contenders for the navy contest it was the only one that managed to actually fly through both conversions, even though it logged fewer flight hours. The real reason why the project was ended was that even with the advantage of VTOL capacities a turboprop plane couldn't hope to be a match for the jets that were starting to appear, and the steam powered catapults were proving quite sufficient to the task of getting a plane off a carrier's bridge

Yep, it did work, and the difficulty of landing I think would have been overcome with some electronics if the project went further.

DT, thanks, thats a little more power than needed, and price too. Thats interesting though, that you can do both with it. It will already be lots of power with the motors I will use, they are equal to .90 or 120 glow each motor

toptenor · Dec 03, 2008, 12:48 PM

I gather that you're settled on your powerplant at the moment, but here's one you may or may not know about, from Vision Hobbies-- http://visionhobbies.com/1637131.html

I've used it in a now defunct scratch build, and loved it, and can't wait to use it again in a new project. There is also a PJS currently in use in a Macchi-Castoldi MC-72 in this build thread: http://www.rcgroups.com/forums/showthread.php?t=934757

SilentHunter · Dec 06, 2008, 08:25 PM

Quote:

Originally Posted by toptenor

I gather that you're settled on your powerplant at the moment, but here's one you may or may not know about, from Vision Hobbies-- http://visionhobbies.com/1637131.html

I've used it in a now defunct scratch build, and loved it, and can't wait to use it again in a new project. There is also a PJS currently in use in a Macchi-Castoldi MC-72 in this build thread: http://www.rcgroups.com/forums/showthread.php?t=934757

Thanks, but way too small, I need from 50-63mm diameter outrunners and be able to turn a low pitch 20" prop.

edf nut · Dec 28, 2008, 10:12 AM

any updates?

Tuner · Dec 28, 2008, 11:15 AM

If anyone needs a lighter motor that still has some power you might want to consider this motor. I purchased it and will tell you what kind of thrust it has in a week or so.

It uses aluminum windings instead of copper giving it a considerable power to weight ratio. It also has lighter mechanics.
Only down side is that it does not have a prop drilling jig. I just remove the bell and use it to mark the wholes and use a drill press.
http://www.hobbycity.com/hobbycity/s...idProduct=6565

I was going to make a Coaxial fun fly out of sheets of depron. I started off with a crazy looking design and coincidental as I refined it I ended up with something that more resembles the Pogo. So I decided why be different and I am just making it more like the Pogo.

Ill update you as I hope to be done this week.

Googleplex · Jan 04, 2009, 10:19 PM

I'm using one of these in something at the moment - very good motors. I'm running 10x6x3 blade props and it handles it just fine with tons of thrust and runs cool enough to touch. Only real problem is the prop shaft up the middle is made from silly putty. It bends if you so much as look at it funny.

Tuner · Jan 05, 2009, 02:14 PM

Good to know going to look for a replacement asap! As I might be relying on this for a competition.

Scott

Googleplex · Jan 06, 2009, 02:37 AM

If you discover what diameter shaft it is let us know - I thought it had a 3.175mm (1/8") shaft, but its really a fraction smaller than that, and 3mm is too small all together

. Mine still runs, but sounds a bit rough as the shaft has been restraightened a few too many times to be happy.

SilentHunter · Jan 20, 2009, 09:23 PM

Quote:

Originally Posted by edf nut

any updates?

Nope sitting for now, had to finish develoment of a sub kit.

Will be back when i get something exciting

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Nov 29, 2008, 08:09 PM	#17
edf nut Registered User Join Date: Sep 2005 Location: Greenville S.C Posts: 623	Cant wait to see this one go

Nov 30, 2008, 10:09 AM	#18
SilentHunter under construction Join Date: Aug 2003 Location: Green valley AZ Posts: 998	That motor is not a CR motor, only 2 outrunners together turning the same prop. Himax was supposed to make a similar sized one as I have, I have yet to see it though it has been under the "to be release whenever category"

Dec 03, 2008, 12:48 PM	#23
toptenor Registered User Join Date: Oct 2008 Posts: 8	I gather that you're settled on your powerplant at the moment, but here's one you may or may not know about, from Vision Hobbies-- http://visionhobbies.com/1637131.html I've used it in a now defunct scratch build, and loved it, and can't wait to use it again in a new project. There is also a PJS currently in use in a Macchi-Castoldi MC-72 in this build thread: http://www.rcgroups.com/forums/showthread.php?t=934757

Dec 28, 2008, 10:12 AM	#25
edf nut Registered User Join Date: Sep 2005 Location: Greenville S.C Posts: 623	any updates?

Dec 28, 2008, 11:15 AM	#26
Tuner Registered User Join Date: Oct 2005 Posts: 386	If anyone needs a lighter motor that still has some power you might want to consider this motor. I purchased it and will tell you what kind of thrust it has in a week or so. It uses aluminum windings instead of copper giving it a considerable power to weight ratio. It also has lighter mechanics. Only down side is that it does not have a prop drilling jig. I just remove the bell and use it to mark the wholes and use a drill press. http://www.hobbycity.com/hobbycity/s...idProduct=6565 I was going to make a Coaxial fun fly out of sheets of depron. I started off with a crazy looking design and coincidental as I refined it I ended up with something that more resembles the Pogo. So I decided why be different and I am just making it more like the Pogo. Ill update you as I hope to be done this week.

Jan 04, 2009, 10:19 PM	#27
Googleplex It's a really big number. Join Date: Jan 2001 Location: Brisbane Intl, Australia Posts: 1,161	I'm using one of these in something at the moment - very good motors. I'm running 10x6x3 blade props and it handles it just fine with tons of thrust and runs cool enough to touch. Only real problem is the prop shaft up the middle is made from silly putty. It bends if you so much as look at it funny.

Jan 05, 2009, 02:14 PM	#28
Tuner Registered User Join Date: Oct 2005 Posts: 386	Good to know going to look for a replacement asap! As I might be relying on this for a competition. Scott

Jan 06, 2009, 02:37 AM	#29
Googleplex It's a really big number. Join Date: Jan 2001 Location: Brisbane Intl, Australia Posts: 1,161	If you discover what diameter shaft it is let us know - I thought it had a 3.175mm (1/8") shaft, but its really a fraction smaller than that, and 3mm is too small all together . Mine still runs, but sounds a bit rough as the shaft has been restraightened a few too many times to be happy.