Whats the Maximum Size of the Battery?

[PiccoZ06]

Hi,
I'm looking for some new BATTS for my 500 i was just wondering if any1 could tell me what the maximum size is that will fit inside the canopy?

I think i heard that the FP 6s 3700 did FIT under the canopy? witch has 160 mm x 43 mm x 40 mm
Thanks,
Finn

[Aaron15]

ok i took the battery tray and moved it down about 33mm and drilled new holes. here r some pics. they have all that extra space under the battery tray for the speed controller. but i have my speed controller on the side of the heli so its empty underneath the tray. and the 5 and 6 cel slide in the frame perfectly here r some pics and i hope this helps you all out. my heli works great like this

[PiccoZ06]

Great idea,
I will think about doing that.
What pack is that?

[Finless]

The 3700 FP was the largest I could fit BUT the bottom of the canopy would not go into the frame slot... However no problem as the batt was long wnough to keep the canopy from coming off.

Bob

[PiccoZ06]

140x45x21mm is the size of the 3s pack im going to use.

So the FP is 160 mm x 43 mm x 40 mm
And mine would be 140x45x42mm

[Aaron15]

it is the 5cell 3200 mah Kong Power. it is Agreat pack

[Socal500]

Consider the Protek 4000 5S 20C as well. My friend has been using it on 16T.While he has not had it long enough to comment on lifespan he does get 7:30 of sport/3D putting back just 2800 so there is room for mor flight time or more aggressive flight.

At $130 for the pack its well worth the try. No modifications need to fit but it is slightly nose heavy. You can drop the battery tray between the frames and then adjust the battery to get the CG correct.

Its also just 5 grams heavier than the KP 3200.

[WiscHeli]

who sells the Protek 4000 5S 20C

[psindrup]

Originally Posted by Aaron15

ok i took the battery tray and moved it down about 33mm and drilled new holes. here r some pics. they have all that extra space under the battery tray for the speed controller. but i have my speed controller on the side of the heli so its empty underneath the tray. and the 5 and 6 cel slide in the frame perfectly here r some pics and i hope this helps you all out. my heli works great like this

That looks pretty darn right to me!

Have you checked/tested what it does to CG for a given pack?

Peter

[Aaron15]

yes i have it works better then having it in the regular postion. mean it the CG is alot better now that i droped it down like that. at least it seams like its better. i flew it all day like that yesterday.

[enahs]

Originally Posted by WiscHeli

who sells the Protek 4000 5S 20C

Amainhobbies.. http://www.amainhobbies.com/product_...ducts_id/16870

[cudaboy_71]

i fit this 5s pack in...JUST BARELY with no mods. you have to find the sweetspot on the battery tray....1/8" too high or too low and it won't go on.

http://www.amainhobbies.com/product_...ducts_id/16870

dims are 40 x 134 x 38mm

[Socal500]

On the Protek 5S 4000 you have a few options. It will go on with canopy mounting as normal if the battery is positioned correctly. Fitting it this way with a full size tail servo and the ESC under the front tray, the heli will most likely be slightly nose heavy but does very well. If you moved the ESC back to the side mount you might balance but not sure.

The second way way is to move the battery up on the tray slightly to get better balance but when you put the canopy on, put the lip of the canopy above the frame slot and not in it. The battery wil hold the canopy in place.

The third way is to recess the battery tray into the frame and the Protek will fit between the frame. Recessing allows you to move the battery up the tray some and mount the canopy as normal.

Some also redrill canopy mount holes but I prefer any of the above over this.

All of our testing has been with the ESC mounted under the tray so moving it back to the center frame location, which basically takes the ESC weight out of the equation as far as balance is concerned, might give you the correct CG so you can just mount the canopy as in the first method.

[Schuster_Helis]

I did my test flights with my TP 5000 V2's. They were the only thing I have right now. It actually flew pretty good, a bit nose heavy but Very stable. LOL ( thats because its a pig). My question is: I was going to get FP 2500 6s packs, but how will the TP 3300's or 3300 FP's work? They are about 115 grams heavier than the 2500's but im into mild 3d and sport flying. Do you guys think these would be good packs to get? How much extra flight time with the extra mah?

Evo 25 2500 6s = 400 grams
Evo 25 3300 6s = 515 grams

TP 25c 3300 6s = 515 grams
TP 25c 5000 6s = 726 grams Just a bit nose heavy...

T-rex 500 CF
Futaba S9650 Cyclic
Futaba 401 with 9257
Stock motor and ESC
Ar7000 w/ X9303

[lowflyer101]

how about protek 6s3000mah ?? (2 X 3s3000mah /20C in series) the size of protek 3s3000mah / 20 C 35 x 135 x 24mm weight 205 g

6s3000 /20 c proteck would be 35 x 135 x 48 something 410g. will it fit the trex500 without frame mod??

[terrabit]

I'm running 5S 3700 EVO25's. I'd prefer a lighter pack with the stock motor. It flys heavy. (Not real nimble, imo.)