Lead Weight For Lipo

[jim76]

Originally Posted by Cockerill

Ash, will you be at the BRCA AGM this year?

please please please don't let him in! We'll all have to run underweight 3 wheelers and drive backwards if he gets any proposals through!

[Rich D]

Thanks for the replies fellas - Frogger you have PM mate

[OldTimer]

I have done a lot of testing with lipos, and to be honest the cars feel better running on the minimum weight, of course the results maybe different with different makes of car, but the people that have used my cars with lipos in agree they handle very well.

[ashleyb4]

He had to run back and get a piece of lead.

A

[ashleyb4]

Im hoping to be at the agm.

Andmy mum says lee go get a life you sad little man.

A

[PaulRotheram]

sorry to drag this out.. but surely it dosnt matter if the weight limit is reduced? people can still run 'normal - heavy' cars if they wish as itl be over weight. either way im not fussed, just pointing out the obvious!

[Chrislong]

There is a good point already said, the current weight limit is worldwide, lets not change it.

Both my cars with Nimh's are very over weight. Both of them with Lipo (3200 stick in 2wd, 3200 saddle in 4wd) were very under weight. For the Belgium GP I weighted them up and I honestly felt no difference for it - I just spread the weight to balance the chassis.

Even with keeping the current weight (which we should), Lipo has an advantage over cells in that Lipo can mean a car runs under weight and choose lead placement, whereas a Nimh car is usually well over weight. This is why I mention increasing the weight limit - but I now think keeping that limit global is most important.

Ash mate, I like you, but you do need to think a lot more about your posts. You go through phases of being more mature and then go back to completely random (yet be frustrating adament that you are right), for your own sake mate do see reason in what we all reply to you with, otherwise we'll just get sick of correcting you and call you a retard - like Lee has done.

Chris

[Lee]

Originally Posted by ashleyb4

As as you all say the car should handel better with the extra weight
A

Ash, leave your mum out of this we finished ages ago

I am sorry for abusing you, i didnt realise it was a mental issue and you have some sort of typing impediment, i can tell from the stutter in the quote above

[MK999]

Originally Posted by PaulRotheram

sorry to drag this out.. but surely it dosnt matter if the weight limit is reduced? people can still run 'normal - heavy' cars if they wish as itl be over weight. either way im not fussed, just pointing out the obvious!

but after set up changes the lighter cars are bound to be faster once suspension is working properly under them, making ni-mh setups slower and effectively obsolete, forcing people to buy li-po and pushing up costs, which is one of the main attractions of the 10th off road class for many

[OldTimer]

I think you will find lipos will reduce costs not push them

[MK999]

I don't have lipos, I have Ni-MH batteries, to run Ni-Mh currently costs me nothing, having to buy lipo would cost me around £150 in battery+charger, which is what I meant it by it increasing costs

[OldTimer]

Trakpower 3200 lipo stick or saddle £45, trakpower charger £38 total = £83

3 packs of Orion SHO 4200 @ £57 (maybe £60 with bat bars etc) = £171.00 (£180)

There is a good chance that you will replace cells over the winter for the new season, unless you are using some GP3700, so you can see how it reduces your costs

[Gayo]

Setup-wise, I think that lighter cars need slimmer tyres. Less contact patch in order to have more pressure on the pins/spikes.

[jono83]

Originally Posted by PaulRotheram

sorry to drag this out.. but surely it dosnt matter if the weight limit is reduced? people can still run 'normal - heavy' cars if they wish as itl be over weight. either way im not fussed, just pointing out the obvious!

lol enough said !

[DCM]

Definately an interesting thread (so as much as it is fun, lets leave the Ash bashing out of it)

The way I see it at the moment, with the current tyres and car designs, they produce the grip mechanicaly with the aide of the weight, I know my 4wd rides better with Nims, but there is less strain and wear on LiPo.

I think there needs to be a setup change in 4wd, but in 2wd, I think there will be a re-think to produce the rear end grip consistantly.

[SlowOne]

Steady chaps, take a breath...

Originally Posted by mark christopher

super bikes dont have high power to weight ratio?
f1 dont have enough power?
are you serious? your saying there not over powered and adding weight will help them?

Most weight limits on full-size cars are to restrict costs, not provide power-to-weight ratios. The 'bike analogy works to a point, but what we're saying Mark is that a 2WD car on the weight limit is the equivalent of a Rallycross car (1000bhp) weighing 150kg!!

Originally Posted by Kopite

If you have a lighter car, your setup has to be really really spot on, whereras if you have a heavier car, your setup doesn't have to be quite so perfect for it to get round (plus a heavier car seems to grip better in loose or wet conditions). This is what i've found with gaining and losing weight on the car (after trying to shed loads of weight on my cars, then going back to adding weights again)

i therefore will be running an absolute brick from now on

but the point is, with the weight loss of running LIPO, i would defo add weight to bring it up to the weight it was with NiMH (especially in 2wd)

bringing the weight limit down would be like pissing into the wind, or having sex with a diseased prostitute

If you don't adjust the suspension settings and the tyres, then you'll have to add weight. If you do both these things then the lighter car will be faster.

Originally Posted by Cockerill

I've done both and the X6 is far better

Ash, will you be at the BRCA AGM this year?

I agree with most that the weight limit should not be reduced. It also needs to be a worldwide change, we don't really want to be running to different weight limits to Europe and the rest of the world. I say keep it as is and let people run their cars how they like, even with Lipo I think most would struggle to get under the current weight limits.

The Worldwide point is a good one, and we need to ensure that the weight limit proposal is put to EFRA next week for inclusion in this year's AGM. What's the new weight limit we need?

Originally Posted by Chrislong

Even with keeping the current weight (which we should), Lipo has an advantage over cells in that Lipo can mean a car runs under weight and choose lead placement, whereas a Nimh car is usually well over weight. This is why I mention increasing the weight limit - but I now think keeping that limit global is most important.
Chris

That's the point - if you can choose where to put the weight, then you really are at an advantage...

Originally Posted by OldTimer

I think you will find lipos will reduce costs not push them

Originally Posted by MK999

I don't have lipos, I have Ni-MH batteries, to run Ni-Mh currently costs me nothing, having to buy lipo would cost me around £150 in battery+charger, which is what I meant it by it increasing costs

Gimme your coats, chaps, I'll hold them while you slug it out. If Mark Christopher gets into the ring, run away - he's a big bloke!!

It's like watching repeats of Top Gear on Dave - you've seen them all before but there is this morbid fascination - as you guys follow the same arguments and good/bad arguments that riddled TC for two years. The funniest bit is that you're all chasing obsolete technology. The future is not in LiPo it is in the LiFePo4 cells currently sold by A123. Costs less, charges faster, lasts longer, much safer, much more robust, and provides a voltage that every electric class can use.

[Lee]

Originally Posted by SlowOne

The funniest bit is that you're all chasing obsolete technology. The future is not in LiPo it is in the LiFePo4 cells currently sold by A123. Costs less, charges faster, lasts longer, much safer, much more robust, and provides a voltage that every electric class can use.

Totally agree, my feeling is that lipo will not be voted in but the A123 cells will be the next type of cells we jump too

[mark christopher]

Originally Posted by SlowOne

The future is not in LiPo it is in the LiFePo4 cells currently sold by A123. Costs less, charges faster, lasts longer, much safer, much more robust, and provides a voltage that every electric class can use.

go on then how can every electric class use them in the voltages they say they are on thier site?

http://www.a123racing.com/html/racingPacks.html

i fail to find any classes that run 3.3v 6.6v or 9.9 volt??

[jim76]

just what i thought. offroad could use the 6.6v packs i guess, but everyone would need to fit 4.5 motors or maybe even faster

[mark christopher]

Originally Posted by jim76

just what i thought. offroad could use the 6.6v packs i guess, but everyone would need to fit 4.5 motors or maybe even faster

which would make it dearer...................... defo need another charger, diff mores to cope with lower voltages ie 4.5 3.5