SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Jan 12, 2010, 12:50 AM
RC SAPRANOS
Glider-man's Avatar
At the field in 10...
Joined Jun 2008
524 Posts
... and page 100!

I found CA/Easy hinges to be very good, they are thin and there are no pins or anything waiting to be clogged.
Glider-man is offline Find More Posts by Glider-man
Reply With Quote
Sign up now
to remove ads between posts
Old Jan 12, 2010, 12:57 AM
Pusher jets rule!
crxmanpat's Avatar
Mesa, AZ
Joined Jan 2006
17,664 Posts
Well, depends on how many posts per page you are set up for (I do 100 per page, so this is only page 16 for me ).

Pat
crxmanpat is offline Find More Posts by crxmanpat
Reply With Quote
Old Jan 18, 2010, 08:24 AM
Registered User
TheTrashMan's Avatar
Joined Jul 2009
803 Posts
hey crxmanpat,is it better to use a 25c battery over a 20c?I flew mine yester day,and it flew great,but i was just wondering if 25c is better than the 20c i am using?
TheTrashMan is offline Find More Posts by TheTrashMan
Reply With Quote
Old Jan 18, 2010, 08:39 AM
Registered User
TheTrashMan's Avatar
Joined Jul 2009
803 Posts
oh and the thrust vectoring is awsome!!!!!!!In fact after watching me fly it ,my uncle and went home and bought 200$ worth of stuff to get him up and running!!!!!!!
TheTrashMan is offline Find More Posts by TheTrashMan
Reply With Quote
Old Jan 18, 2010, 08:52 AM
Slow Flyer
Bombay's Avatar
Richmond, TX
Joined Apr 2008
3,236 Posts
planeflyer94:
What motor and prop are you running?
What size (mah) 20c battery do you have?

These questions would help determine if 25c would be better for you.
Rob
Bombay is offline Find More Posts by Bombay
Reply With Quote
Old Jan 18, 2010, 09:16 AM
Registered User
TheTrashMan's Avatar
Joined Jul 2009
803 Posts
i have the grayson supersonic combo,and a 1300 20c 3cell.
TheTrashMan is offline Find More Posts by TheTrashMan
Reply With Quote
Old Jan 18, 2010, 11:32 AM
Slow Flyer
Bombay's Avatar
Richmond, TX
Joined Apr 2008
3,236 Posts
Quote:
Originally Posted by planeflyer94 View Post
i have the grayson supersonic combo,and a 1300 20c 3cell.
Based on my tests with a 2212-6, at WOT with a 6x4 we were drawing 21 amps.

For a 1300 20c 3cell, I believe the calculation (1300 x 20) shows that the battery can deliver 26 amps. I think this is fine based on what I have read. You should be using a battery that can deliver approx 25% more amps than what the setup pulls. So, 21 amps + 25% = approx 26amps...which is about where you are.

Keep in mind that if your system is only pulling 21amps at WOT, you probably wouldn't see a performance increase by moving up to a much higher C rating battery. You are only going to pull approx 21 amps whether you have a 20, 25, 30 or 40c battery.

You might want to consider a higher capacity battery (mah). A higher capacity battery at the same c rating would give you longer flights plus more power potential. Check out these calculations:

3s 1300mah, 20c = 26amp potential
3s 1300mah, 25c = 32.5amp potential
3s 1550mah, 20c = 31amp potential (and longer flight times over a 1300mah)
3s 2200mah, 20c = 44amp potential (and longer flight times over a 1300mah)

For what it is worth, I am running 1550mah 30c batteries and my buddy is running 2200mah 20c batteries. So, this airframe can certainly handle larger, heavier batteries.

hope that helps
Rob
Bombay is offline Find More Posts by Bombay
Reply With Quote
Old Jan 18, 2010, 11:57 AM
Registered User
TheTrashMan's Avatar
Joined Jul 2009
803 Posts
so the more mah also means more power too.
TheTrashMan is offline Find More Posts by TheTrashMan
Reply With Quote
Old Jan 18, 2010, 12:23 PM
Slow Flyer
Bombay's Avatar
Richmond, TX
Joined Apr 2008
3,236 Posts
yes
Bombay is offline Find More Posts by Bombay
Reply With Quote
Old Jan 18, 2010, 03:20 PM
Pusher jets rule!
crxmanpat's Avatar
Mesa, AZ
Joined Jan 2006
17,664 Posts
Will the plane go vertical with that 1300 20C (it should)? If it's flying fine with that lipo, then I say continue on with it. But like Rob said above, you can certainly use up to a 2200 lipo as well. The higher mAh gives you more power and duration.

Pat
crxmanpat is offline Find More Posts by crxmanpat
Reply With Quote
Old Jan 18, 2010, 04:23 PM
Registered User
TheTrashMan's Avatar
Joined Jul 2009
803 Posts
it can go vertical for a couple of seconds,but then it goes to slow and i lose control.Like it will fly it fine but i am getting rerady to order some batterys and i am debating going to 25c.
TheTrashMan is offline Find More Posts by TheTrashMan
Reply With Quote
Old Jan 19, 2010, 09:25 AM
Minister of R/C
HeliTB's Avatar
Fort Washington, MD
Joined Sep 2006
1,031 Posts
If you go with heavier batteries you will lose some of vertical ability simply because the plane is heavier.
HeliTB is offline Find More Posts by HeliTB
Reply With Quote
Old Jan 19, 2010, 03:08 PM
Registered User
TheTrashMan's Avatar
Joined Jul 2009
803 Posts
hey guys is my battery ruined if after it dies(loses charge)it gets left pluged in for oh say......................2 hours?
TheTrashMan is offline Find More Posts by TheTrashMan
Reply With Quote
Old Jan 19, 2010, 03:14 PM
Pusher jets rule!
crxmanpat's Avatar
Mesa, AZ
Joined Jan 2006
17,664 Posts
Maybe, maybe not. Does your charger have the ability to select the charging rate? If so, hook it up and charge at like .2 amps for a few hours and see if it works (make sure you protect the surroundings in case the battery goes up). If you have the ability to balance charge, do that as well.

BTW, just to be sure (you should have very good vertical with your current setup), is your prop facing the right direction? The numbers on the face of the prop should be facing towards the front of the plane.

Pat
crxmanpat is offline Find More Posts by crxmanpat
Reply With Quote
Old Jan 19, 2010, 04:01 PM
Registered User
TheTrashMan's Avatar
Joined Jul 2009
803 Posts
well i have been charging it for like 2 hours now on .3 amps(thats as low as it goes)And it seems fine.

My prop is on rite but i still dont get that great performance,and i dont know why.My first plane i put it on i had way more power,but it was hard to control,and there for it crashed a lot.Now i have it on my f-22,and i have great control but less performance from the motor.
TheTrashMan is offline Find More Posts by TheTrashMan
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Video f-22 with average pilot leadfeather Electric Plane Talk 1 Apr 24, 2008 01:49 AM
Video RCSuperPowers F-22 with Vectoring Thrust RCSuperPowers Electric Plane Talk 25 Feb 18, 2008 05:00 PM
Wattage F-22 with mixed surfaces & 208 watts/lb!! (video) meteor Electric Ducted Fan Jet Talk 30 Feb 09, 2005 10:57 AM
Wattage F-22 with ducted fan The Blue Max Electric Ducted Fan Jet Talk 11 May 10, 2003 02:13 PM
f-22 with jeti brushless ivorz Foamies (Kits) 14 Oct 01, 2002 09:39 PM