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Old Sep 11, 2002, 10:29 AM
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San Antonio, Tx
Joined Jul 2002
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Just got my Kyosho T-33, which battery to use?

I just received a used Kyosho T-33 (no instructions). I was suprised at the toughness of the wings! The ailerons seem to use a weird bellcrank system? It was loose and shakey feeling so I redid it last night. I was wondering what size/mAh battery I should be using to power this thing. I have three 8 X 3000mAh NiHm I would like to use. It came with a 9cell pack which is smaller than the Sub c's I have. They are shrink wrapped so I'm not sure of their MaH or size?
The seller had replaced the motor with a stronger unit. I tried a Great planes Electrifly combination 30 amp esc/receiver on the plane last night on the bench, after around 20 seconds the motor shut down. I pulled back the throttle to idle and reapplied and the motor started back up for around 15 seconds. I'm guessing the ESC is going into thermal shutdown? How big does the esc need to be?
Thanks for all your help!
Steve
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Old Sep 11, 2002, 10:34 AM
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Daren's Avatar
Los Alamos, NM, USofA
Joined Nov 2000
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It depends on the motor. What motor is in your T-33?

Daren
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Old Sep 11, 2002, 11:02 AM
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San Antonio, Tx
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Oops. I did some checking in the original threads and found out the motor is a Plettenberg 200-25-4 and battery that came with the plane is a 9cell panasonic 2000 nimhs. After reviewing all his emails he mentioned a 40 amp esc might be needed? I'm guessing my 8X3000 NiMh might not be up to the task? And they are larger/heavier also than the 2000s that came with the plane.
40 amps is allot! I used to run R/C cars with modified motors (10 turns) that usually only pulled 30-35 amps.
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Old Sep 11, 2002, 11:23 AM
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Larry Dudeck's Avatar
Williamsville, NY, USA
Joined Sep 2000
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Stay with the 9 cell packs. Weight is the big enemy of the T33.

The heavier 8 cell packs will result in higher wing loading, lower thrust. What's to like?
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Old Sep 11, 2002, 11:51 AM
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San Antonio, Tx
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Wow..after checking prices for cp-1700 cells I'm in shock! They are much more expensive than standard sub c batteries! Which batteries will I want to use? They listed cp-1300, 1700 and 2400. Is it just the capacity that is different or weight as well? I really would prefer to use the cells I have now until I save up some $$ for new cells.
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Old Sep 11, 2002, 12:02 PM
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Larry Dudeck's Avatar
Williamsville, NY, USA
Joined Sep 2000
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I use the 8Xcp1700 packs in my T33. With the stock motor the plane hand launches easily, gets about 4 minutes.

I purchased mine from Tony La at

www.eflightpacks.com

Good service and the packs (last spring) were $40 ea.
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Old Sep 11, 2002, 12:08 PM
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San Antonio, Tx
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The cp-2400 are only $2 more per pack, would they offer longer runtime?
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Old Sep 11, 2002, 12:43 PM
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gregg f's Avatar
shadow hills,ca
Joined Apr 2000
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Quote:
Originally posted by SteveO
The cp-2400 are only $2 more per pack, would they offer longer runtime?
yes, but your weight will increase 4oz. ..............gregg
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Old Sep 11, 2002, 01:21 PM
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skyhawk's Avatar
Vancouver B.C.
Joined Apr 2002
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It seems like everyone is using 8 cp-1700, they are light weight for the cell and duration - 2400 would give you more time but a higher weight and this plane needs to be light. Your esc dying means the batt pack low, it does this to tell you to come down while you have enough batt to run the servos, you can reapply power for a short burst if you are in a bad spot - but it doesn't run long! My setup is stock with a pegasus 35 and it runs great. Does the same thing when the batt gets below 4V the safety kicks in and the motor quits - but the plane glides fairly well.
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Old Sep 11, 2002, 03:59 PM
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San Antonio, Tx
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Thanks for the info guys. I suppose I'll have to suck it up and buy some new battery packs. One reason I purchased this plane was because I thought it would use my R/C car packs..oh well, live and learn.
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Old Sep 11, 2002, 04:16 PM
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Larry Dudeck's Avatar
Williamsville, NY, USA
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SteveO,

Lesson NO. 1.

In the world of EDF's, everything costs more
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Old Sep 11, 2002, 04:23 PM
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Herb's Avatar
Irvine, Calif USA
Joined Feb 1999
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Quote:
Originally posted by SteveO
Wow..after checking prices for cp-1700 cells I'm in shock! ...
I bought quite a few CP 1700 cells at TNR Technical (an authorized Sanyo distributor) for $3 each. Now they charge me $3.5 a cell, still that's only about $28 for an 8 cell pack.

I buy all my Sanyo batteries there, they are local for me

http://www.tnrtechnical.com/
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Old Sep 12, 2002, 01:47 PM
Registered User
San Antonio, Tx
Joined Jul 2002
1,021 Posts
Flies awesome!

I took the T-33 out last night for it's madien flight. It was awesome! Easily one of the best flying planes i have. I used the included 9 cell pack then used my 8X3000mAh. It had so much power i flew most the time at half throttle. I managed around 7 minutes with the 3000 pack. I think now I've flown this used one I'll look for NIB kit to build and really make sharp!
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Old Sep 12, 2002, 03:07 PM
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nashua nh 03060
Joined Dec 2000
226 Posts
T-33

Steve,
Glad It worked out . That plettenberg really makes a difference.

Enjoy your new jet

Derrek
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Old Sep 12, 2002, 03:56 PM
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San Antonio, Tx
Joined Jul 2002
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Thanks Derreck for everything. This is easily the best online transaction I've ever made.
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