Disadvantages of LIPO ?

[Belsten]

Hi, I was wondering what the disadvantages of running LIPO are (if any) with the exception of limited availability of saddle packs are ? Thanks

[antnee]

More care is needed with charging etc,
expense too

[low13]

chassis set up will need to be considerably changed to get it to "feel"the same.then again some do add weight to counter the change.recently i have been considering going lipo myself but the cost can get quite high when you take the need for a new charger into hand,speedo aswell

[Mutant]

Hi,

It is possible to purchase an external lipo cut off device that plugs in between the speedo and the reciever. Probably much cheaper than a new speedo.

Also because lipos can be used many times a day you may well get away with only purchasing 1 pack. The demon hardcase lipo (5000mah) at £50 deliverd is the cheapest option i have seen.

some current chargers also have lipo charging functionality, although a balancer may also be required for occasional use.

Cheers

[low13]

there you go then,i've been proven wrong and it seems lipo is really becoming the only option in a couple of years i didn't know they could be recharged several times a day i knew of the high charge rates (20 c )but thanks wish the brca would alough them in mods

[Chrislong]

Originally Posted by low13

chassis set up will need to be considerably changed to get it to "feel"the same.then again some do add weight to counter the change.

I would only regard this as a short term disadvantage, as you would only need to do it once. Even if going back to NIMH for BRCA meetings, once weighted up the chassis - you can take a note of what lead goes where and it'll be easy.

What ongoing & long term disadvantages are there? Is punch decreased? Do motors run hotter? Do they damage easy from hard landings? Is the life of them short?

[JCJC]

Disadvantages:

Mostly not being "sanctioned" or whatever the word is for 10th off road Nationals and thus Regionals for 2008.

10th off road will need a rule change to use them for 2009, this will have to be proposed and accepted.

Originally Posted by low13

i knew of the high charge rates (20 c ) but thanks wish the brca would alough them in mods

I think advice is charge at 5 Amps, not high rates.

[xx4-nutter]

is lipo legal at club meetings ?

[modelimages]

Originally Posted by JCJC

Disadvantages:

Mostly not being "sanctioned" or whatever the word is for 10th off road Nationals and thus Regionals for 2008.

10th off road will need a rule change to use them for 2009, this will have to be proposed and accepted.




I think advice is charge at 5 Amps, not high rates.

you charge at the 1c rating so for a 4200 lipo you would charge at 4.2 etc.

lipo chargers work differently to nimh and you cannot "run all day on one pack" a good charger will charge the pack in 1 hour irrespective of the amount used so for example your 5000 lipo is used in a race and 2500 is used, you recharge at 5 amps theoretically it will be charged in 30mins, in reality it will take an hour, by the time you have finished marshalling etc there isn't an hour left. as for punch and power, you can discharge the latest lipo cells at 30c, so if your using a 5000mah then you can pull 150 amps, however if you exceed that 30c rate the duration crashes it will supply the extra ampage just not for very long.

[stegger]

Originally Posted by antnee

More care is needed with charging etc,
expense too

Expensive how can you say that??? CORE do a 5000mAH for £69.99 which will do you all day. You would need 3 maybe 4 packs of normal cells at £40 plus to do a meeting. Hope this helps