How to - 12s T-Rex 600 Setup On A Budget.

[Hamma]

Shef, can we see some photos??

[tonyblade]

thank you guys, many thanks,i hope you can put the picture up mr eccleston but dont worry if your busy, sheff what you said sounds good too, must decide how to do this today as the soldering irons getting twitchy got all the bits now just needs putting together, dont like p-r-elforce! £14.50 handling fee shocking i say. tony.

[jack flash]

Hi guys,
Please bear with me I'm ralatively new to all the jargon and finding it mind boggling!
Was thinking of going 12s due to lack of punch & bogging,but then a friend said why not connect batteries in parralell instead. Does anyone know if this works or the pro's & cons. Thx

[climbing-n-flying]

Originally Posted by jack flash

Hi guys,
Please bear with me I'm ralatively new to all the jargon and finding it mind boggling!
Was thinking of going 12s due to lack of punch & bogging,but then a friend said why not connect batteries in parralell instead. Does anyone know if this works or the pro's & cons. Thx

Yes it works to run parallel. I am doing this right now for the moment. Allthow it wont really help to stop the bogging. It only gives you more flight time, and also helps the batts. from being to stressed out since it spreads the load over the 12 cells combined rather than 6 only. 6 cell systems pull a lot of amps usually, more than the higher voltage systems.

[jack flash]

Thanx for that.
Does the fact that the parralell batteries are 35c as opposed to the 6s battery we are using is only 25c mean we will get more punch? Also can you leave everything else standard, ie electrics? & are there any issues like causing fires etc.

[Trnquill]

When connected in parellel the current per battery will be cut in half. If the batts were tortured near their max output current in 6S1P configuration you will get a bit more power from 6S2P. But that's only if the batteries were the bottle neck of your power system. In any case a 6S2P system will be easier on the batts than a 6S1P system 'cause of the lower current.

The reason why people are getting more power from 12S systems is because they use more powerful motors. The stock 600ESP motor is somewhere around 1,5kW where as the "standard choise for a motor in 12S" Scoprion 4025-630 delivers around 2,5kW. That's a huge difference but has nothing to do with batteries connected in series or parellel. In theory one could get a 2,5kW 6S motor and get equal power compared to a 12S system. Why no-one does this is because of the current. Getting 2,5kW of power from a ~22V battery equals in over 100A of continous current. ESC's capable of handling this kind of current are a rare breed. In 12S system equal power would mean only 50+A, which is much more reasonable a current.

All in all, the power comes from the motor, not from the way you connect the packs. But in practice you have to run high power system with high voltage battery setup to keep the current within certain limits.

[jack flash]

Thanks that was very helpful. I think I understand now that there is no quick fix to bogging and I will continue with my original plan to go 12s using Mr Ecclestones tried & tested set up.

[rceccleston]

Originally Posted by jack flash

Thanks that was very helpful. I think I understand now that there is no quick fix to bogging and I will continue with my original plan to go 12s using Mr Ecclestones tried & tested set up.

PM sent.

[zen97713@zen.co.uk]

Ok guys I have Ran about 30 flights with my 12s setup as per the thread owners setup. My only issue is I have broken single teeth on two main gears and also broken a pinion tooth. To be fair I suspect the pinion breaking broke the second main gear. I am using the align 13t pinion and used a 3rd bearing block after the first gear broke. My question is what are your thoughts on this? Are there others that break maingears? Is there a mod1 option for the 4025-630 scorpion if this keeps happening.

[tonyblade]

hi zen, i broke single teeth off mine on 6s! so dont think its the 12s doing it, maybe some dodgy plastic from align? ive bought the kd alloy mount and if i have any probs whatsoever with the maingear that will be going on with the 700s gear. tony.

[rceccleston]

Originally Posted by zen97713@zen.co.uk

Ok guys I have Ran about 30 flights with my 12s setup as per the thread owners setup. My only issue is I have broken single teeth on two main gears and also broken a pinion tooth. To be fair I suspect the pinion breaking broke the second main gear. I am using the align 13t pinion and used a 3rd bearing block after the first gear broke. My question is what are your thoughts on this? Are there others that break maingears? Is there a mod1 option for the 4025-630 scorpion if this keeps happening.

Not experienced any gear or pinion problems yet, with approximately 350 flights.

Sounds like it maybe relate to meshing.

Probable causes:-

• Tight meshing on low spot which would be too tight on high spot,
• High pinion causing lower curve to interact with main gear,
• Play in motor bearings causing mesh to vary,

Stock main gear been holding very well for the last 250 flights.

[zen97713@zen.co.uk]

Originally Posted by rceccleston

Not experienced any gear or pinion problems yet, with approximately 350 flights.

Sounds like it maybe relate to meshing.

Probable causes:-

• Tight meshing on low spot which would be too tight on high spot,
• High pinion causing lower curve to interact with main gear,
• Play in motor bearings causing mesh to vary,

Stock main gear been holding very well for the last 250 flights.

Thanks for that. The mesh seems good to be honest with tight meshing on a high spot and medium mesh on a low spot. Motor is only 30 flights old? Pinion is as low as it can go and about 1 mm above the main gear (no not too low).

I will keep an eye on the main gear. Hopefully this one will last fine. Maybe the other failures were due to bad luck and the drive pinion going bad?

[dfrazier]

Originally Posted by zen97713@zen.co.uk

Ok guys I have Ran about 30 flights with my 12s setup as per the thread owners setup. My only issue is I have broken single teeth on two main gears and also broken a pinion tooth. To be fair I suspect the pinion breaking broke the second main gear. I am using the align 13t pinion and used a 3rd bearing block after the first gear broke. My question is what are your thoughts on this? Are there others that break maingears? Is there a mod1 option for the 4025-630 scorpion if this keeps happening.

I have broken single teeth on a couple mains. What I have found is there is a little hole molded around the ring of the main. There is a tooth that is perfectly aligned with that hole and that is the tooth that is breaking off. After 2 gears I decided to try something. I removed a little off of that one tooth with a soldering iron until that tooth was even with the depth of the hole. A dremel will also work. I have not broken another tooth yet.

[tonyblade]

Sorry if it's been posted before but has anyone tried the turnigy 3000 40 c yet? Am worried they might be too heavy at 522g against the 35c I have at the moment, the 35c are 514g tony . Ps the 40c is also 7mm taller!?

[tonyblade]

It's ok guys I've found my answer, they are too heavy!

[meatbob]

So, the additional 16g (over two packs) really makes a difference?

[azheliguy]

I have a question about charging new batteries for 12s. Do you charge them in pairs as 12s or do you charge them as 6s then try to match them up with each other?
I have a Hyperion 615I DUO3 charger.
Should I brake them in as 6s first or brake them in pairs as 12s units.
Thanks!!

[Altimat]

Makes a lot of sense to go 12S with 6S packs on hand, but if you need LiPos anyway 5S packs sure are cheap:

http://www.hobbyking.com/hobbyking/s...idProduct=9263

[azheliguy]

Originally Posted by Altimat

Makes a lot of sense to go 12S with 6S packs on hand, but if you need LiPos anyway 5S packs sure are cheap:

http://www.hobbyking.com/hobbyking/s...idProduct=9263

Altimat, I just got all my 6s packs and I am just trying to find out the best way to brake them in and charge them.
Thanks!!

[tonyblade]

So, the additional 16g (over two packs) really makes a difference? has anyone tried the 40c ones then?