Got my new batteries but need some help .

[daddy cav]

New batteries turned up today but have some questions .

The wires look like they plug into the battery but will they come out again ?

They look like a very tight fit .

Removed the battery holders on the outside of the chassis and the pack fits ok , need to trim the battery stay to clear the wires .














Next question .... will my old helicopter charger be ok ?
It's 2 cell and 7.4v

[Dom]

I'd have thought those battery leads would plug all the way in - how deep are the holes in relation to the cable ?

[daddy cav]

Yes , they go all the way in but will they come out again is the thing .... don't want to force them in yet .
The bit round the outside must compress together a lot to fit in the hole .

[Dom]

I've used similar connectors which have had an angled piece of metal inside the female part which grips like buggery - it goes in but won't come back out - you'll only know when you're ready to try though.

[Dom]

If you're really worried about them, bung a bit of hot melt glue on it.

[daddy cav]

Well they look like they compress as they go in . Don't want to get it wrong .

[wayne451]

They don't look too different to the old corralli (I think that's what they weere called?) connectors that I used to use, they were gold plated jobbies that slotted into gold plated tubes that you had to solder onto the end of the stick/saddle pack.

I assume that little wiring harness that you have pictured came with it and adapts your existing wiring or something?

WTF is that yellow wire about? Not a 'hot wire' for a servo is it?

[daddy cav]

The yellow wire goes in the middle of the pack and the white plug goes into the charger .

The red and black wires just go onto the speed controller with my Traxxs plug .

The speed controller has got power capacitors standard .

[wayne451]

Whats the yellow do though? Is it some sort of an earth or something?

Bugger me all this stuff has changed since I last raced. lmao

[daddy cav]

That's the thing , this is the first Lipos I have bought , will have a look about on one of the rc car sites .

[wayne451]

Just to give me a heads up, who is your car manufactured by?

I could wager a guess off my old theories off the dog bones and the lower arms but...

[daddy cav]

The good old dog bone method still works well , have got spare diffs , some are locked .. so I can run them with both front and rear diffs locked .
Can do donuts on the spot until tyres go and no part of the drivetrain has been replaced .
Shouldn't say that ..... going to break now .
The make is Hsp but converted them to brushless etc .

[pie]

the yellow lead is so you can balance charger the 2 cells in the lipo

and ya the push in there only 4mm corallays

there look the same as my lipos (i post a pic)

lipos have a safe cut off so they dont blow up ( thye will if they drop below a sectain voltage) check youtube

[pie]

brca lipos



and big 5200 45c lipos for messing round lol

[daddy cav]

Thanks Pie , I'll give them a good push in the hole .

Have got a voltage cut off on the Ezrun

No probs with my old helicopter charger then ? the one in the pic .

[pie]

cant see why not fella its a 2cell lipo charger and your lipos are 2cell ya?

[daddy cav]

Yes , I like your gold packs
What sort of life do Lipos have ?
Can you just top them up like the Ni-Mh and not worry about fully discharging ?

Pushed the connectors in no problem , just need to solder some plugs on now , it's good that you can change them over .
One car is Deans and one car is Traxxs .

[pie]

ya just top them up fella

my gold packs are last year ones

you can leave them charged and the dont drop voltage like the old nimh packs

if you got the lipo cut off your fine then no booms for you lol

[daddy cav]

Can't find my solder , will let you know how it goes

[pie]

koo

[daddy cav]

Decided to ditch the Traxxs plugs and just do everything with Deans plugs .

Lipos charged , plugs soldered so ready for a test drive .

[pie]

you should notice how quick the brushless setup is now fella

[daddy cav]

Glad you came on , hold up ,

Had a test run today and was set on 3.0v per cell , now the car had about 15 mins use and the voltage cut came in .

The Lipo was nowhere near hot but was a bit warm .

Thinking maybe changing the gearing ?

Got a choice :

58T Main cog / 26T motor cog < current gearing .

64T Main cog / 29T motor cog < sposed to be uprated gearing .

[pie]

try uprated gearing fella and see how it goes

also depends on your driving style...are you flat out on the throttle every or are you on n off etc

[daddy cav]

Bit of both realy , over car park , getting used to them but need better charger , mine takes bout 5 hours .