Please vote for one!!!

[potreinas]

I vote for: 1 HV

[BL_RV0]

still vote for HV. can you please tell me the approximate dimensions of the controller? and would it be possible to make a 150-200a HV controller?

[jhautz]

Originally Posted by lutach

A 12S 100A would be the same as a 6S 200A controller in terms of power and they can be made to be the same price, it all depends on the company making them. With so many people buying 8000, you will see that going with the smaller packs helps a lot in terms of price, weight and placement of the packs in your veicle. Example: 2 3S 8000mAh ($235.48 and 545 grams each)= $470.96 and 1090 grams, now 2 6S 2200mAh ($149.99 and 340 grams each)= $299.98 and 680 grams. The 8000mAh packs each have the following dimensions: 44mm X 137mm X 38mm. The 2200mAh packs each have the following dimensions: 51mm X 33mm X 107mm. jhautz with this little info would you still vote for LV or would you go with HV?

lutach... Your not telling me anything that I didn't understand when I wrote my first reply.

I didn't "vote" for LV, I said I wouldn't pay allot more for the HV and that 6s seems to be plenty in my experience. If you cant get a truck to run cool on a well setup 6s rig, then you have problems.



As far as your battery size and cost argument please see below.

Originally Posted by Sammus

But thats an unfair comparison, just because lots of people choose the 8000 doesnt mean you can evenly compare 6s 8000 to 12s 2200. Looking at the power each pack provides (taking 3.7v nominal cell v) thats about 177Wh from the 6s and under 100Wh from the 12s, of course the 12s will be smaller and lighter...

And on top of that, I've noticed people tend to choose th 8000 for 3s and 4s setups, and then 4 or 5000 for 6s...

My thoughts exactly. Comparing apples and oranges here. Give me a comparison with the same amount of potential energy in both setups and then tell me how much "cheaper" and "lighter" it is.


This question is like hammer or screwdriver.... which one is better? Unless you know the "for what" you cant answer it. I am just trying to give you some context around my thoughts. There isn't an answer that is black or white IMO.

[aqwut]

HV is nice.. but 6S is not Low voltage either.. LOL..

they're both nice.. and definately powerful.. but with higher voltage, you could use thinner wires because of the lower amp draws.. I think that's the only advantage... and a little bit more efficient...

a fair comparison would be 12S 4000mAh vs 6S 8000mAh... would be the same...

[lutach]

Originally Posted by BL_RV0

still vote for HV. can you please tell me the approximate dimensions of the controller? and would it be possible to make a 150-200a HV controller?

If my 200A controllers were to be built they would have the following dimensions: 105X74X17. For comparison the Schulze 40.160 has the following dimensions: 120X71X20. Now this is mainly because of the DPAK MOSFETs. With new technology in MOSFETs available a manufacturer can make them smaller. One example that I like a lot is the HV110 from Castle. Now the HV110 uses the Si4470 http://www.vishay.com/docs/71606/71606.pdf. Here are 2 components with 8-SOIC footprint that puts out some good number: NXP (Philips) http://www.nxp.com/acrobat/datasheets/PH1875L_1.pdf and Renesas http://documentation.renesas.com/eng...hat2266hds.pdf.

[Matthew_Armeni]

I like the HV but would want a higher current rating so if I choose to run LV that day (or in a certain vehicle) I can do so without worry of taxing the speed control and heating it up. HV is great and definitely the better way to go, no doubt there, but not everyone has the means to make the switch just yet. New chargers, batteries, motor's, etc. cost money, a decent amount of money. Buying a new controller would be step 1 in upgrading, then the other equipment follows. So while I'm saving to upgrade I want to be able to run my new controller in my current setup. Maybe that's just me though. An idea could be to do two versions, one of which is high amp. (I believe Castle has four versions of their new Hydra, 60, 120, 180, and 240 amps, 50v max)

Anyway, I would still rather see a HV controller purpose built for cars, I just worry about new guys who want the best x product, break it, and want it to be covered even though it was their fault and didn't bother to read any instructions. Grrrr... I remember when I was in Japan and I was helping a guy get his Mad Force running. I pull off the body and see there's no air filter. I said, "Dude, your air filter fell off." to which he replied, "Oh, no it didn't, I took it off because it felt more powerful when it was off.". I was stunned. The thing is, some people just aren't as into the hobby as much as the people on this forum are, for example. And they'll be some of the ones to buy this controller.

Sorry for the rant

Edit: Is the controller going to be 100 amp 12s or 200 amp 12s? 200 amp is great, I was referring to 100 amp when I started my post.

[lutach]

Originally Posted by Matthew_Armeni

I like the HV but would want a higher current rating so if I choose to run LV that day (or in a certain vehicle) I can do so without worry of taxing the speed control and heating it up. HV is great and definitely the better way to go, no doubt there, but not everyone has the means to make the switch just yet. New chargers, batteries, motor's, etc. cost money, a decent amount of money. Buying a new controller would be step 1 in upgrading, then the other equipment follows. So while I'm saving to upgrade I want to be able to run my new controller in my current setup. Maybe that's just me though. An idea could be to do two versions, one of which is high amp. (I believe Castle has four versions of their new Hydra, 60, 120, 180, and 240 amps, 50v max)

Anyway, I would still rather see a HV controller purpose built for cars, I just worry about new guys who want the best x product, break it, and want it to be covered even though it was their fault and didn't bother to read any instructions. Grrrr... I remember when I was in Japan and I was helping a guy get his Mad Force running. I pull off the body and see there's no air filter. I said, "Dude, your air filter fell off." to which he replied, "Oh, no it didn't, I took it off because it felt more powerful when it was off.". I was stunned. The thing is, some people just aren't as into the hobby as much as the people on this forum are, for example. And they'll be some of the ones to buy this controller.

Sorry for the rant

Edit: Is the controller going to be 100 amp 12s or 200 amp 12s? 200 amp is great, I was referring to 100 amp when I started my post.

The components I mentioned above are more then twice as powerful as the Vishay used in the HV110, so in reality if you go with the other you can have a controller put out over 200A. What we are trying to do here is just to get a vote for which system would you like to see the US manufacturer come out with. Current sensing can help out incase someone goes over what the controller is capable of.

[starscream]

I vote 12S
I plan to run 2x 4S Lipo in my 1/8th scale and 1x 4S Lipo in my 1/10th scale
vehicles
A 100 amp esc is plenty for either scenerio above seeing how my avg amp draw varies between 35-45amps
One thing to keep in mind is the all mighty ROAR and other sanctioning bodies that currently limit MT's to 4S

[lutach]

Originally Posted by starscream

I vote 12S
I plan to run 2x 4S Lipo in my 1/8th scale and 1x 4S Lipo in my 1/10th scale
vehicles
A 100 amp esc is plenty for either scenerio above seeing how my avg amp draw varies between 35-45amps
One thing to keep in mind is the all mighty ROAR and other sanctioning bodies that currently limit MT's to 4S

I don't like to play by ROAR rules. Specially when a few years ago Trinity had a big fuss about brushless and even put adds in magazines. Look at them now. Also LIPOs, it's funny when some big players in the hobby industry got into lipos ROAR went ahead to approved them. ROAR is like the FIA and F1 racing. I used to love watching Nelson Piquet driving his little 1.3L 1300HP turbo engine car around the tracks. Lets not forget about my all time favorite Group C. I think there should be some new form of sanctioning body that allows new technology to e used. It would prove if a product is worthy for us consumers to use.