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Jack2010 · 08-27-2010, 05:16 PM

As some of you noticed I am building 425

For the start up I'm using my Rex 450 2.200 mah LiPo as a temporary solution.

With that said I have started searching around what LiPo would be the best choice for me and came to the conclusion that I would like to buy those Turnigy 3300 mah 6S:
http://www.hobbycity.com/hobbyking/s...dProduct=11925

So, just before clicking buy now button I would like to ask you for an final advise - is this the good choice or not?

atkinson · 08-27-2010, 07:04 PM

I would give them a try. I am running a 3000 40c flightmax on mine. Makes it nose heavy. Looks like that one weighs 489g and mine is 522g. Maybe it wont be as nose heavy. Probabally will give you good flight times too.

Brick · 08-27-2010, 10:24 PM

i will be using my T500 batteries to start with....2650 6S

Mikej · 08-28-2010, 01:30 AM

Jack,

That might be too big for the 425XF frame depending on which canopy you have - possibly OK with the 550 canopy but probably too big with the 425 canopy - I use these http://www.hobbycity.com/hobbycity/s...dProduct=11948 and they seem very good - fits nicely.

Cheers,
Mike.

Jack2010 · 08-28-2010, 01:45 PM

Motivation is the capacity. 3300mah is 25% more over 2650. Having in mind that they are only 23g more this should result in 1,5-2 min. additional flying time.

Correct me if I'm wrong but there are many people flying 6S 2650 30C "old" Turnigy with no problem fitting them with CF frame and standard 425 canopy.

I did comparison between "standard" 6S 2650 30C Turnigy and those 3300 nano. They are very similar. So let’s take a look:

Turnigy 2650mAh 6S 30C: 466g
Turnigy nano-tech 3300mah 6S 25C: 489g

Nano is +23g, that is ~1,5% extra on total heli weight vs. 25% capacity increase.

Size Turnigy (AxBxC): 143 x 49 x 36mm
Size T.Nano (AxBxC): 145 x 53 x 37mm

As you can see the size differs by single mms... does it really make a such diff between fitting and not fitting?

Mikej · 08-29-2010, 01:18 AM

It's up to you mate - but bear in mind that when people say that they are using the "CF frame" they don't mean the one that you have - they mean the original Gaui CF frame.

Jack2010 · 08-29-2010, 04:08 AM

Quote:

Originally Posted by Mikej

It's up to you mate - but bear in mind that when people say that they are using the "CF frame" they don't mean the one that you have - they mean the original Gaui CF frame.

You (they) mean that one (part #204770)?

BTW - Mike, ukgroucho and others with XF frame - what exactly 6S LiPos were you using before nano's? And was it with 550 or 425 canopy?

Mikej · 08-29-2010, 04:27 AM

Nope the original CF frame

Only the chosen few have the newer 425XF frame (you, UKG and me)

I use 2650 6S Nano, 20 - 30C and 30 - 40C - if the 3300 nano is the same size as the 30C - 40C 6S then you may be OK (as I said your call) - the HK information isn't always 100% accurate

ukgroucho · 08-29-2010, 11:56 AM

I'm using Turnigy 6S 20 - 30C 3000MaH packs.
http://www.unitedhobbies.com/hobbyki...dProduct=10722

Claimed size is 137x42x36 but actually more like 137x44x41 ( I just measured two of them).
They fit with the stock 425 XF canopy - but it's snug and you need to get the pack mounted in just the right place.

Jack2010 · 08-29-2010, 03:50 PM

@Mike - I presume you have those two types (both of them):
Turnigy nano-tech 2650 6S 35~70C (http://www.hobbycity.com/hobbyking/s...dproduct=11948)
Turnigy nano-tech 2650 6S 25~50C (http://www.hobbycity.com/hobbyking/s...dproduct=11917)

If yes, could you do me a favor and check their actual dimensions - I’m wondering if HobbyKing provides not real sizes in their tech spec or ukgroucho 3000mah case is just an accident…

BTW – did any of you ever try those: Turnigy 2650mAh 6S 30C (http://www.hobbycity.com/hobbyking/s...idproduct=9268)
They are so inexpessive...

________________________________________________

EDIT:

Mike - just read your post again: are you saying that you have nano (what kind exactly?) AND the "old" Turnigy 2650 in both versions, so 30C/40C and 20C/30C like those:
http://www.hobbycity.com/hobbyking/s...idProduct=9268
http://www.hobbycity.com/hobbyking/s...idProduct=9181

If this time I am corrct can you measure them as well? Thx a million.

Mikej · 08-30-2010, 04:28 PM

This is what I have

Turnigy 2650 6S 20~30C 43x35x138
Turnigy 2650 6S 30~40C 43x37x140
Turnigy nano-tech 2650 6S 25~50C 43x32x137

Jack2010 · 08-31-2010, 03:43 AM

Thx Mike - just to double check - do they all fit nice and smoothly with the XF frame and 425 canopy?

Speaking about the canopy... you have mentioned somewhere that T500 canopy fits this frame as well. Based on your experience - is there more/less/the same amount of space for the LiPo with T500 canopy? Any advantages/disadvantages of using it vs. the original one (apart of the price

)

Mikej · 08-31-2010, 04:24 AM

Jack,

The fit is very tight for the 425 canopy - the 550 canopy fits much better.

The T500 canopy gives other options and can be bought very cheaply if you buy clone canopies - the fit isn't very good at the bottom - basically it rests against the lipos not onto the bracket - I need to make up a bracket so that it fits onto the proper mounting but I have never got around to it

Cheers,
Mike.

Jack2010 · 09-01-2010, 02:48 AM

OK guys – small update on LiPo’s and some conclusions

.

First of all would like to thank you for the input (Mike, UKG, Nick from Gaui and the others from HeliFreek who helped)

From the Gaui team TW I have got following answer to what can we fit between the canopy and XF frame:
Date: Tue, 31 Aug 2010
Subject: RE: Gaui 425 XF
From: gaui@gaui.com.tw
(...) We only can give you the size of space available between the XF frame and 425 canopy that you can put your Lipo, it is 137.5 x 48 x 43, hope this will help (...)
Best regards
Nick
TSH GAUI

Also Mike and UKG (roughly) confirms this in their reports that the biggest we can put there is about that. If you have LiPo that is bit longer than 138, I presume it must be a bit thinner in order to fit. If it is about 137-138 long than 44x41 fits and I can only guess that those additional mms claimed by Gaui can fit as well (48x43).

I have limited the search to Turnigy LiPo only as my (and the others) experience with this brand is pretty good. I mean the prices are attractive and the quality is decent.

So, what do we have out there:
(Given sizes are based on reports from the real world not the HK web info. From my experience it looks like different people reporting different sizes so they are not 100% consistent, but differences are with one or two mms. On contrary the weight is based on www data which I believe in)

1. Turnigy 3000mah 6S 20C, size: 137x44x41, weight: 487g, price: 34$
2. Turnigy 2650mah 6S 20C, size: 138x43x35, weight: 430g, price: 30$
3. Turnigy 2650mah 6S 30C, size: 140x43x37, weight: 466g, price: 29$
4. T. nano 2650mah 6S 25C, size: 137x43x32, weight: 399g, price: 42$
5. T. nano 2650mah 6S 35C, size: 137x43x33, weight: 417g, price: 46$
6. T. nano 3000mah 6S 25C, size: 136x43x38, weight: 447g, price: 52$
7. T. nano 3300mah 6S 25C, size: 137x44x39, weight: 489g, price: 58$

Conclusions:

1. The economic solution is Turnigy 2650mah 6S 30C (only 29 $, not that heavy and good C-rate)

2. The lightest solution is T. nano 2650mah 6S 25C (only 399g and the cheapest nano, however 35C version is so close to it in all aspects except C-rate where it is better)

3. Best for 3D IMHO is T. nano 2650mah 6S 35C (relatively light but highest C-rete)

4. The biggest capacity is: T.nano 3300mah 6S 25C (25% more mah over 2650, but 489g – the heaviest, however only 22g more than „classic” 2650 30C and about the same as „classic” 3000 20C, for the price you can get two of “classic” Turnigy 2650mah 6S 30C)

5. Probably „golden middle” is T. nano 3000mah 6S 25C (should fit well, 13% more mah than 2650 and weight almost exactly between the lightest and heaviest one, but second most expensive)

Bottom line is all of them should fit without any modification with the XF frame and standard 425 Canopy based on the provided dimensions.

It goes without saying that nano (at least theoretically) should work for us much longer than previous generation of Turnigy and charging C-rate is so much higher resulting potentially in dramatically shorter charging times (~8-12 minutes for the pack if you have the charger big enough

). Unfortunately nano’s are ca. 50% more expecive...

It is worth to mention that if you buy them from HK all of them are above 500g postal pack so you need to add 15 $ for the less expensive delivery, BUT If you take T. nano 2650mah 6S 25C, they are only 493g, so the delivery is 10 $, so the overall diff between them and cheapest Turnigy 2650mah 6S 30C goes down to 8 $ only.

One thing that I miss is the C rate judgment - will it be fair to say that 20C on „classic” Turnigy is a bit too small (mine got quite hot and puffy) so we should rather look for 30C? With nano I believe 25C should be just fine due to the overall better characteristics as they are more like 30C of the previous generation.

The other issue might be CG vs. the LiPo weight, but that depends on your individual setup, and so very hard to judge...

ukgroucho · 09-01-2010, 05:58 AM

Good stuff... did you look at any of the higher C Nano packs for their dimensions?

I'm managing to slightly puff my 20C 3000MaH Turnigy packs a little. They puff a little and go back down. I believe this is normal, but it is not something I like to see.
I really need to get my EagleTree logger on the 425 to see what sort of load I'm sticking thru them but the ESC and motor and capable of 85Amps sustained. I suspect I only pull anywhere near that for a few seconds at a time (full pitch inverted piro climb out etc.).
In summary I'd agree that a higher C rating is a good idea... I'll certainly be heading that way in the future.

Jack2010 · 09-01-2010, 06:13 AM

Quote:

Originally Posted by ukgroucho

did you look at any of the higher C Nano packs for their dimensions?

I don't think there are any other nano's within 6S group higher than 35C that we could consider.

Mikej · 09-02-2010, 09:30 AM

Based upon some empirical testing (i.e. hammering about like an idiot) I think that you are pretty much on the ball. As I mentioned I have 3 2650 6S Turnigys.

1 x 2650 6S 20C - 30C
1 x 2650 6S 30C - 40C
1 x 2650 6S 25C - 50C Nanotech

The 20C - 30C is fine for general sports flying, but is a bit marginal when pushed hard - still works fine but a little bit puffy after 50 flights. The 30C - 40C is defo better - more "pep" and faster HS - fine for multiple continuous loops and flips, about 60-odd flights and still going strong. The 25C - 50C Nano is the best - again slightly higher HS and more "pep" again fine for continuous loops / flips etc. and slightly smaller.

So IMHO the Nano is the best bet - next time I would get the 35C - 70C as it is only a few dollars more, but the 25C - 50C is perfect for me, the standard 30C - 40C is an absolute bargain at $28.

I'm sure that someone will say "ahhh, but I have 200 flights on my $150 PowerMax (or something)" - my response would be "great - good luck with it" - this seems to be a very personal thing, but having killed a previous Turnigy 2650 6S 20C in a spectacular crash after about 12 flights on it, I would have been absolutely gutted if it had cost me $150 - as it cost me $28 my only worry was waiting for it's replacement to arrive from HK

.

P.S. I would have given the packs a more testing testing with heavy 3D - but I can't do any

Jack2010 · 09-02-2010, 01:10 PM

Mike, out of curiosity:
a/ any diff in flying times or 2650mah is "the same" in all of your Turnigy's?
b/ any particular reason why are you not considering 3000mah Nano (or even 3300) as a next one?
c/ if you were about to choose: 3x 2650 30/40C for ca. 85$ or 2x 2650 Nano for more or less the same price what would be your selection?

Mikej · 09-02-2010, 01:20 PM

a. I have the timer set for the same so each flight is the same - I put about the same back into them.
b. My 550 balances perfectly with the 2650, my flight times are 5.30 minutes which is enough for me. Once you go past a certain point you end up using the extra capacity lifting the extra weight, and nimbleness suffers.
c. It depends if I have any lipos currently - 3 is the optimum number for me so I would go for 3 x 30/40C if I didn't have any, if I had some I would go for 2 x Nano

Jack2010 · 03-31-2011, 03:54 PM

Small update. I got interested in those LiPo's by another Gaui owner and decided to test how they are.

6S version (2800 mah, 30/40C, 35$)
http://www.hobbyking.com/hobbyking/s...dproduct=14059

3S version (2800 mah, 30/40C, 18$)
http://www.hobbyking.com/hobbyking/s...dproduct=14057

Just got 6S packs today and they fit perfectly for the 425 CF frame as they are quite short:

With other packs it was a bit tricky to fit them, but with those it is so easy

The are very similar (size wise) to 2x 3S 2200 Turnigy and so different from my 3000 Nano:

Their weight is 444g (to compare - 2x 3S 2200 Turnigy are 401g and 6S 3000 Nano are 438g). Dimensions are about what HK is providing: 121x38x52mm. In fact mine are more like 119x38x54mm.

Just ordered 3S version and if they fit Trex 450 they will be my call been used in both helis - 1x 3S for T450 and 2x 3S for Gaui.

08-27-2010, 05:16 PM	#1 (permalink)
Jack2010 Registered Users Join Date: Jul 2010	Perfect LiPo for 425 - UPDATED !!! As some of you noticed I am building 425 For the start up I'm using my Rex 450 2.200 mah LiPo as a temporary solution. With that said I have started searching around what LiPo would be the best choice for me and came to the conclusion that I would like to buy those Turnigy 3300 mah 6S: http://www.hobbycity.com/hobbyking/s...dProduct=11925 So, just before clicking buy now button I would like to ask you for an final advise - is this the good choice or not? Last edited by Jack2010; 09-01-2010 at 02:49 AM..

08-29-2010, 04:27 AM	#8 (permalink)
Mikej Registered Users Join Date: Feb 2007 Location: England	Nope the original CF frame Only the chosen few have the newer 425XF frame (you, UKG and me) I use 2650 6S Nano, 20 - 30C and 30 - 40C - if the 3300 nano is the same size as the 30C - 40C 6S then you may be OK (as I said your call) - the HK information isn't always 100% accurate Attached Thumbnails

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08-27-2010, 07:04 PM	#2 (permalink)
atkinson Registered Users Join Date: Oct 2009	I would give them a try. I am running a 3000 40c flightmax on mine. Makes it nose heavy. Looks like that one weighs 489g and mine is 522g. Maybe it wont be as nose heavy. Probabally will give you good flight times too.

08-27-2010, 10:24 PM	#3 (permalink)
Brick Registered Users Join Date: Dec 2007 Location: N.Carolina	i will be using my T500 batteries to start with....2650 6S

08-28-2010, 01:30 AM	#4 (permalink)
Mikej Registered Users Join Date: Feb 2007 Location: England	Jack, That might be too big for the 425XF frame depending on which canopy you have - possibly OK with the 550 canopy but probably too big with the 425 canopy - I use these http://www.hobbycity.com/hobbycity/s...dProduct=11948 and they seem very good - fits nicely. Cheers, Mike.

08-28-2010, 01:45 PM	#5 (permalink)
Jack2010 Registered Users Thread Starter Join Date: Jul 2010	Motivation is the capacity. 3300mah is 25% more over 2650. Having in mind that they are only 23g more this should result in 1,5-2 min. additional flying time. Correct me if I'm wrong but there are many people flying 6S 2650 30C "old" Turnigy with no problem fitting them with CF frame and standard 425 canopy. I did comparison between "standard" 6S 2650 30C Turnigy and those 3300 nano. They are very similar. So let’s take a look: Turnigy 2650mAh 6S 30C: 466g Turnigy nano-tech 3300mah 6S 25C: 489g Nano is +23g, that is ~1,5% extra on total heli weight vs. 25% capacity increase. Size Turnigy (AxBxC): 143 x 49 x 36mm Size T.Nano (AxBxC): 145 x 53 x 37mm As you can see the size differs by single mms... does it really make a such diff between fitting and not fitting?

08-29-2010, 01:18 AM	#6 (permalink)
Mikej Registered Users Join Date: Feb 2007 Location: England	It's up to you mate - but bear in mind that when people say that they are using the "CF frame" they don't mean the one that you have - they mean the original Gaui CF frame.

08-29-2010, 11:56 AM	#9 (permalink)
ukgroucho Registered Users Join Date: Oct 2005	I'm using Turnigy 6S 20 - 30C 3000MaH packs. http://www.unitedhobbies.com/hobbyki...dProduct=10722 Claimed size is 137x42x36 but actually more like 137x44x41 ( I just measured two of them). They fit with the stock 425 XF canopy - but it's snug and you need to get the pack mounted in just the right place.

08-29-2010, 03:50 PM	#10 (permalink)
Jack2010 Registered Users Thread Starter Join Date: Jul 2010	@Mike - I presume you have those two types (both of them): Turnigy nano-tech 2650 6S 35~70C (http://www.hobbycity.com/hobbyking/s...dproduct=11948) Turnigy nano-tech 2650 6S 25~50C (http://www.hobbycity.com/hobbyking/s...dproduct=11917) If yes, could you do me a favor and check their actual dimensions - I’m wondering if HobbyKing provides not real sizes in their tech spec or ukgroucho 3000mah case is just an accident… BTW – did any of you ever try those: Turnigy 2650mAh 6S 30C (http://www.hobbycity.com/hobbyking/s...idproduct=9268) They are so inexpessive... ________________________________________________ EDIT: Mike - just read your post again: are you saying that you have nano (what kind exactly?) AND the "old" Turnigy 2650 in both versions, so 30C/40C and 20C/30C like those: http://www.hobbycity.com/hobbyking/s...idProduct=9268 http://www.hobbycity.com/hobbyking/s...idProduct=9181 If this time I am corrct can you measure them as well? Thx a million.

08-30-2010, 04:28 PM	#11 (permalink)
Mikej Registered Users Join Date: Feb 2007 Location: England	This is what I have Turnigy 2650 6S 20~30C 43x35x138 Turnigy 2650 6S 30~40C 43x37x140 Turnigy nano-tech 2650 6S 25~50C 43x32x137

08-31-2010, 03:43 AM	#12 (permalink)
Jack2010 Registered Users Thread Starter Join Date: Jul 2010	Thx Mike - just to double check - do they all fit nice and smoothly with the XF frame and 425 canopy? Speaking about the canopy... you have mentioned somewhere that T500 canopy fits this frame as well. Based on your experience - is there more/less/the same amount of space for the LiPo with T500 canopy? Any advantages/disadvantages of using it vs. the original one (apart of the price )

08-31-2010, 04:24 AM	#13 (permalink)
Mikej Registered Users Join Date: Feb 2007 Location: England	Jack, The fit is very tight for the 425 canopy - the 550 canopy fits much better. The T500 canopy gives other options and can be bought very cheaply if you buy clone canopies - the fit isn't very good at the bottom - basically it rests against the lipos not onto the bracket - I need to make up a bracket so that it fits onto the proper mounting but I have never got around to it Cheers, Mike.

09-01-2010, 02:48 AM	#14 (permalink)
Jack2010 Registered Users Thread Starter Join Date: Jul 2010	OK guys – small update on LiPo’s and some conclusions . First of all would like to thank you for the input (Mike, UKG, Nick from Gaui and the others from HeliFreek who helped) From the Gaui team TW I have got following answer to what can we fit between the canopy and XF frame: Date: Tue, 31 Aug 2010 Subject: RE: Gaui 425 XF From: gaui@gaui.com.tw (...) We only can give you the size of space available between the XF frame and 425 canopy that you can put your Lipo, it is 137.5 x 48 x 43, hope this will help (...) Best regards Nick TSH GAUI Also Mike and UKG (roughly) confirms this in their reports that the biggest we can put there is about that. If you have LiPo that is bit longer than 138, I presume it must be a bit thinner in order to fit. If it is about 137-138 long than 44x41 fits and I can only guess that those additional mms claimed by Gaui can fit as well (48x43). I have limited the search to Turnigy LiPo only as my (and the others) experience with this brand is pretty good. I mean the prices are attractive and the quality is decent. So, what do we have out there: (Given sizes are based on reports from the real world not the HK web info. From my experience it looks like different people reporting different sizes so they are not 100% consistent, but differences are with one or two mms. On contrary the weight is based on www data which I believe in) 1. Turnigy 3000mah 6S 20C, size: 137x44x41, weight: 487g, price: 34$ 2. Turnigy 2650mah 6S 20C, size: 138x43x35, weight: 430g, price: 30$ 3. Turnigy 2650mah 6S 30C, size: 140x43x37, weight: 466g, price: 29$ 4. T. nano 2650mah 6S 25C, size: 137x43x32, weight: 399g, price: 42$ 5. T. nano 2650mah 6S 35C, size: 137x43x33, weight: 417g, price: 46$ 6. T. nano 3000mah 6S 25C, size: 136x43x38, weight: 447g, price: 52$ 7. T. nano 3300mah 6S 25C, size: 137x44x39, weight: 489g, price: 58$ Conclusions: 1. The economic solution is Turnigy 2650mah 6S 30C (only 29 $, not that heavy and good C-rate) 2. The lightest solution is T. nano 2650mah 6S 25C (only 399g and the cheapest nano, however 35C version is so close to it in all aspects except C-rate where it is better) 3. Best for 3D IMHO is T. nano 2650mah 6S 35C (relatively light but highest C-rete) 4. The biggest capacity is: T.nano 3300mah 6S 25C (25% more mah over 2650, but 489g – the heaviest, however only 22g more than „classic” 2650 30C and about the same as „classic” 3000 20C, for the price you can get two of “classic” Turnigy 2650mah 6S 30C) 5. Probably „golden middle” is T. nano 3000mah 6S 25C (should fit well, 13% more mah than 2650 and weight almost exactly between the lightest and heaviest one, but second most expensive) Bottom line is all of them should fit without any modification with the XF frame and standard 425 Canopy based on the provided dimensions. It goes without saying that nano (at least theoretically) should work for us much longer than previous generation of Turnigy and charging C-rate is so much higher resulting potentially in dramatically shorter charging times (~8-12 minutes for the pack if you have the charger big enough ). Unfortunately nano’s are ca. 50% more expecive... It is worth to mention that if you buy them from HK all of them are above 500g postal pack so you need to add 15 $ for the less expensive delivery, BUT If you take T. nano 2650mah 6S 25C, they are only 493g, so the delivery is 10 $, so the overall diff between them and cheapest Turnigy 2650mah 6S 30C goes down to 8 $ only. One thing that I miss is the C rate judgment - will it be fair to say that 20C on „classic” Turnigy is a bit too small (mine got quite hot and puffy) so we should rather look for 30C? With nano I believe 25C should be just fine due to the overall better characteristics as they are more like 30C of the previous generation. The other issue might be CG vs. the LiPo weight, but that depends on your individual setup, and so very hard to judge...

09-01-2010, 05:58 AM	#15 (permalink)
ukgroucho Registered Users Join Date: Oct 2005	Good stuff... did you look at any of the higher C Nano packs for their dimensions? I'm managing to slightly puff my 20C 3000MaH Turnigy packs a little. They puff a little and go back down. I believe this is normal, but it is not something I like to see. I really need to get my EagleTree logger on the 425 to see what sort of load I'm sticking thru them but the ESC and motor and capable of 85Amps sustained. I suspect I only pull anywhere near that for a few seconds at a time (full pitch inverted piro climb out etc.). In summary I'd agree that a higher C rating is a good idea... I'll certainly be heading that way in the future.

09-02-2010, 09:30 AM	#17 (permalink)
Mikej Registered Users Join Date: Feb 2007 Location: England	Based upon some empirical testing (i.e. hammering about like an idiot) I think that you are pretty much on the ball. As I mentioned I have 3 2650 6S Turnigys. 1 x 2650 6S 20C - 30C 1 x 2650 6S 30C - 40C 1 x 2650 6S 25C - 50C Nanotech The 20C - 30C is fine for general sports flying, but is a bit marginal when pushed hard - still works fine but a little bit puffy after 50 flights. The 30C - 40C is defo better - more "pep" and faster HS - fine for multiple continuous loops and flips, about 60-odd flights and still going strong. The 25C - 50C Nano is the best - again slightly higher HS and more "pep" again fine for continuous loops / flips etc. and slightly smaller. So IMHO the Nano is the best bet - next time I would get the 35C - 70C as it is only a few dollars more, but the 25C - 50C is perfect for me, the standard 30C - 40C is an absolute bargain at $28. I'm sure that someone will say "ahhh, but I have 200 flights on my $150 PowerMax (or something)" - my response would be "great - good luck with it" - this seems to be a very personal thing, but having killed a previous Turnigy 2650 6S 20C in a spectacular crash after about 12 flights on it, I would have been absolutely gutted if it had cost me $150 - as it cost me $28 my only worry was waiting for it's replacement to arrive from HK . P.S. I would have given the packs a more testing testing with heavy 3D - but I can't do any

09-02-2010, 01:10 PM	#18 (permalink)
Jack2010 Registered Users Thread Starter Join Date: Jul 2010	Mike, out of curiosity: a/ any diff in flying times or 2650mah is "the same" in all of your Turnigy's? b/ any particular reason why are you not considering 3000mah Nano (or even 3300) as a next one? c/ if you were about to choose: 3x 2650 30/40C for ca. 85$ or 2x 2650 Nano for more or less the same price what would be your selection?

09-02-2010, 01:20 PM	#19 (permalink)
Mikej Registered Users Join Date: Feb 2007 Location: England	a. I have the timer set for the same so each flight is the same - I put about the same back into them. b. My 550 balances perfectly with the 2650, my flight times are 5.30 minutes which is enough for me. Once you go past a certain point you end up using the extra capacity lifting the extra weight, and nimbleness suffers. c. It depends if I have any lipos currently - 3 is the optimum number for me so I would go for 3 x 30/40C if I didn't have any, if I had some I would go for 2 x Nano

03-31-2011, 03:54 PM	#20 (permalink)
Jack2010 Registered Users Thread Starter Join Date: Jul 2010	Small update. I got interested in those LiPo's by another Gaui owner and decided to test how they are. 6S version (2800 mah, 30/40C, 35$) http://www.hobbyking.com/hobbyking/s...dproduct=14059 3S version (2800 mah, 30/40C, 18$) http://www.hobbyking.com/hobbyking/s...dproduct=14057 Just got 6S packs today and they fit perfectly for the 425 CF frame as they are quite short: With other packs it was a bit tricky to fit them, but with those it is so easy The are very similar (size wise) to 2x 3S 2200 Turnigy and so different from my 3000 Nano: Their weight is 444g (to compare - 2x 3S 2200 Turnigy are 401g and 6S 3000 Nano are 438g). Dimensions are about what HK is providing: 121x38x52mm. In fact mine are more like 119x38x54mm. Just ordered 3S version and if they fit Trex 450 they will be my call been used in both helis - 1x 3S for T450 and 2x 3S for Gaui.

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