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Old 09-12-2006, 08:58 PM   #16
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The reason I think mainly is the fact that a Lipo can be a bomb if not handled correctly by say an 8 year old competitor. Of course Nitro can be pretty flamible and we let our kids play with them. I don't know, I think they should be allowed. Gofastrlbrown
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Old 09-12-2006, 09:01 PM   #17
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Quote:
Originally Posted by trilerian
As far as the danger in concerned with any battery. Ignorant people do stupid things, it doesn't matter how fool proof you make something someone will hurt themself.
Like they say, If you build it idiot proof, they will build a bigger idiot....

I just love how they think these cost more..... Do the math... you will see your inital investment is higher, but over the same life of the LiPo, it is cheaper... LiPo has something like 4000 cycles in it, only the last 20% (800) are not as strong as the first 80% (3200), I like to see your subC do that...
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Old 09-12-2006, 09:46 PM   #18
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The simple reason why most tracks wont allow lipo's is to keep the racers coming back and not being driven out by the higher costs.
1 racer gets a lipo, is faster than the others, even if he was faster to start with, then others would feel pressured to switch too.
The costs are still too high, new lipos, new chargers, and what do you do with your big investment of chargers and batt packs?
Its easyer to atract new racers with used equip and batts that always seem to be available, not so easy when they have to spend $125 for 1 pack and then a charger too.
It takes new blood to keep the doors open, the new batch of cars are a lot tuffer, less parts sales, need a lot less hopups, thats where the most money is made, they cant survive selling tires and boddies alone.
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Old 09-12-2006, 10:23 PM   #19
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What about the people who buy the brand new IB4200's that are not yet legal. Making it so if I want to stay competitive with them I have to get rid of my legal gp3700's because they have more fade at the end of a race than the 4200's. Then I need to spend (for one car) $140.00 for two batteries that will be no good next season. Regardless what anyone says, you need to practice with your race batteries in order to see the true effect to your setup changes. Yes, sure I can sell my old batteries for 1/3 the price I paid for them and get back $45.00 or so, but with the lipo it is good this season and next season at least. When you are competing at the top level of your club, batteries make a huge difference, so what the fast guy has you need in order to possibly beat him. In my opinion, lipo is just a better investment.
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Old 09-12-2006, 10:48 PM   #20
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I think people to need to really look at the costs really are.

One of the best chargers out for Lipo's out is this one..
http://www.teamorion-avionics.com/Ad...Flight+Charger

It retails for $79.99

And the new Orion 3200 Lipo that will fit into Touring Cars...
Will Retail around $89-99

So lets do the math.

Charger and Battery $170 - $200

Now lets look at a desent pack and charger.
Orion matched pack $69.99
Duratrax ICE $109.00
THat is $170.00

SO where is the problem....?

You get more runs on lipo and they don't loose there punch after 20 runs.

Now that is all I am going to say..
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Old 09-12-2006, 10:59 PM   #21
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I purchased 2 4800 Platinum Orion Lipos a month or so ago mainly for my offroad cars, and I don't think I'll ever go back to Nimhs! So far the only issues I've had with them is getting my cars setup right without the Nimh weight and accidently 'frying' a couple of steering servos (they were cheap ones and I didn't ave a cap. on my receiver..getting a more expensive servo and puting the cap on has seemed to solve this..).. Everything else seems fine....

-I don't have to peak them the split second before a race to get the max voltage..

-I don't have to replace bad cells every two months just because I hit an object a little hard or the cells just decide to give up the ghost...which over time becomes costly... especially when no one stocks the cells you use because the technology has changed seemingly overnight...

-You can use the lipos over and over again, so you only need one or 2..you normally need several Nihm packs for racing..and at $55 or more a pop for matched Nihm packs, that becomes costly...

-No Archian discharge / storing and matching rituals... After a race day, just top the packs off and store them as long as you like...

The only limits I see right now for Lipos and similar technology is the availabe shapes and voltages and the car designs themselves (getting a car designed so it can handle better with the lighter weight..)...and who knows, those things may become non issues at some point.

So far I'm very impressed with this technology.. Only time will tell if ROAR and other sanctioning bodies will allow different battery technologies in their rulebooks.... They better, or I'll just race club events and never go to a sactioned race! (I'm not that good anyways, so no harm, no foul )
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Old 09-12-2006, 11:15 PM   #22
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Quote:
Now lets look at a desent pack and charger.
Orion matched pack $69.99
Duratrax ICE $109.00
THat is $170.00
You forgot discharge trays, and you only accounted for one battery.
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Old 09-12-2006, 11:25 PM   #23
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Duratrax Ice charger- $120
Novak 9A pwer supply- $60
SMC IB3800 matched pack- $60x4= $240
Novak Smart tray- $75
Battery bars- $5x4= $20
Cell shrink- $2

Ni-mh cost- $517

Orion avionics charger- $80
Novak 9A power supply- $60
Orion platnium 4800mah lipo- $140x2= $280
Lead weights- $5

Li-po cost- $425

Difference= $92/$14= 6.5 pairs of foam tires

Ni-mh= Owned
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Old 09-13-2006, 12:22 AM   #24
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NiMh cells last forever if you charge them at 2A and never dischagre them faster than 20A...but we dont do that.

As soon has LiPo becomes the norm I flat out gaurantee the following things will happen:

1. Someone will start matching and grading LiPo cells.

2. There will be a battery war between Kokam and 2-3 other manufacturers over max C racing and voltage holding power.

3. Some one will figure out that charging LiPo at 10A makes them a whole lot faster...but they burn up in 30 runs.

4. Everyone will have to charge at 10A or they might as well stay home and watch football.

This is what we do to all cells we race NiCd, MiMh and in the future LiPo.
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Old 09-13-2006, 12:26 AM   #25
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Justinian, in my MF2, I have my GTX and Spektrum RX mounted ontop of my Platnum 4800. That seemed to help me out with the weight changes. It's really well balanced with my GTB mounted on the lipo battery. I know it goes against the wisdom to keep things low (for CG). But, Losi was done a lot of work with the JRXS keeping weight centerline, so I thought I would give that a try. It works.

I have 4 lipos that I use in my buggy and truck. I've raced 4 classes (stock and 19T buggy, 19T & mod truck) in one day (3 qual, 1 main) and I didn't even use my third pack. I only charged the stock pack, because I was bored. I've even raced my MF2 against the 1/10 nitro truck field - I can hold my own, as long as I don't get crushed.

I'm never running nimh offroad again. Between lipo and brushless, I spend more time on the drivers stand than I do wrenching on my cars truing comms, discharging / charging batteries, etc!!!
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Old 09-13-2006, 12:27 AM   #26
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Simple

Do you see any LiPo manufacturers or suppliers sponsoring races, tracks, events, of sanctioning bodies?
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Old 09-13-2006, 12:50 AM   #27
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[QUOTE=bvoltz]You guys are soooooo wrong.... QUOTE]
Just read the first 3-4 reply`s & i am on the floor laughing at why some guy`s are not willing to read & learn
talk about run down the Li-Po scene & lets scare every one while we at it aswell
Ammo` box i`ll ask ya
also the Sub -c cells are built differently inside from 3300 to 4200 so it`s not just chemical that has changed
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Old 09-13-2006, 01:25 AM   #28
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Quote:
Originally Posted by TPhalen
My guess is that NiCds and NiMh batteries are not as much a hazard as LiPos....and everyone that GOES to the track already has everything they need to charge them. LiPo's are a bit more dangerous...even requiring you to charge them in a flame proof box...ie ammo box.

You have to remember who you're talking about here, too.
• Airplane/Heli guys use LiPos all the time....but most are VERY experienced and tend to not destroy their equipment. If they crash, they crash big.

• Car guys are a little more irresponsible. Jumping their cars into one another, running them up and down the street until the pack dumps (bad on LiPos), leaving the battery on the charger for extended periods of time...leaving the pack plugged in when not in use...etc.

You have to be a bit more responsible to use LiPos...most shops/tracks aren't ready for someone who isn't responsible to burn their place down.

My 2c.
That would be all well and good say two years ago. Chargers and quality ones at that, are Li-Po friendly and speaking for the superbrain 977, cuts off at 90% when set correctly. If not, just watch it and see that it doesnt go over 8.4 volts. Or how about this, if you are running li-po cells, they must be charged BEFORE you get to the track. Doesnt seem to be much of problem considering that most people in this hobby can READ and know how to charge these delicate packs...get off of it already. This isnt back in the day when people treated li-pos like regular cells and tried to peak em to the teeth. Li-po doesnt need to be peaked, can be charged in advance and if roar or any other governing body wants to, make sure people have functioning LVC's. They check armatures to make sure people arent cheating, so what the hell....stop trying to thwart progress. Run your cells, get smoked and then come to the
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Old 09-13-2006, 01:27 AM   #29
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You people that are against Li-Po act like these cells are WMD's.
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Old 09-13-2006, 01:50 AM   #30
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Quote:
Originally Posted by AdrianM
As soon has LiPo becomes the norm I flat out gaurantee the following things will happen:

1. Someone will start matching and grading LiPo cells
Is this actually possible and beneficial?

Quote:
Originally Posted by AdrianM
3. Some one will figure out that charging LiPo at 10A makes them a whole lot faster...but they burn up in 30 runs.
I'm sure someone has tried this, does it actually work?

Is there an actual danger of this happening? Or is this more fear-mongering?

No one I know that uses the LiP charges them on anything other than a normal pit table - no flame-proof boxes! The BRCA Bike section has been using LiPo for a long time now and there have been no problems at all. Airplaine guys must be laughing their (insert body part of choice) at all this continued paranoia, fear of change and climate of fear...
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