Any chance we will see a 12S Car Esc soon?

[Lizard]

Ahh, now I get it :) I think the 12s version will probably come later.

[ruudxd]

Ah, I hoped you had some info we didn't have :)

Originally Posted by Lizard

ruudxd: I don't know for sure, it just looks like that to me :)

[jcflyer]

I am trying to setup a 12s setup right now, I was thinking about using an ESC from the heli world that has a RC car mode.. Any reason why this ESC would not work?

[RC-Monster Mike]

Minimal/no brakes on air-based ESCs, and they are also not likely to have a good startup in a land based vehicle. A heli also tends to have high average current, but lower peaks than a car, which can have huge current spikes for very short periods of time(big heli's in 3d flight are quite demanding, though) - not certain how that plays into the design/components. I have had good luck with boat ESCs years ago - the startup wasn't great and mechanical brakes were needed, but it worked quite well.

[Thomas Porfert]

My standard response to using an aircraft ESC in a car application:

The ESC does have some braking functions, but it immediately engages at zero throttle and would not be proportional; so a mechanical brake would need to be used. There would also be no reverse function.

Also the trigger on a pistol grip radio won't work properly on an aircraft ESC. The neutral position on the throttle trigger will be read as 50% throttle on the aircraft ESC. Full brake/reverse trigger input on the radio will be zero throttle for the aircraft ESC. So you would have to hold full brake to be at neutral to arm the ESC, and if you let go of the trigger and it snaps back to "neutral" the ESC would run the motor to half throttle.

There is a product called a PiStix that hooks between the ESC and throttle channel on the receiver; it will emulate a signal from the receiver so the ESC sees zero throttle at the transmitters neutral position. You would also need to add a Y-harness to the throttle channel on the receiver. On one side of the Y-harness you would attach the brake servo; on the other side you would connect the PiStix and then the ESC. You also need to make sure the brake servo linkage does not engage the brake when throttle is applied.

Using an air ESC in a surface application will instantly put the ESC out of warranty."

Thomas Porfert
Tech Support
Castle Creations

[jcflyer]

Ok Thomas thanks for your reply.

Jay

[MonsterMaxx]

I have to say that now that I've actually put the MGM in the 5ive it's stupid fast and powerful. Data logging is showing 19hp and speeds rapidly go past 70mph. Sadly the driveline can't handle it so until I build some tougher stuff, it's sitting.

14,000 watts is VERY hard on batteries. Absolutely ruined a set of new TP packs and nanotechs. The nanos held up better than the TPs, but both sets are hurt now. :(

Talked to my buddy Eric the other day who's an avid racer and he says no one is making good cells these days.

[Lizard]

Try Turnigy Graphenes.

[phildogg]

Yeah there are a few good options for packs out there. graphenes are one of them..

[Lizard]

Maybe also go up in capacity? There should be lots of space on the 5ive T chassis and I guess the extra weight doesnt matter that much considering how heavy the car is anyway.

[MonsterMaxx]

Not sure who's adaptor kit I have in there, but both packs are pretty well stuffed in there between the pinion and steering. Def no room for bigger packs.

[Lizard]

Just looked at your pics again.
If I see it correctly you only have 2x 6s 5000 in there? When looking at Othello's Five-T thread (he drained 2x 4s 8000 pretty quickly with a 2028 and much lower gearing) that seems not enough even with the best lipos available. Maybe put another two of those 6s packs right next to the motor.

BTW, I really wonder about weight distribution as it is now, doesn't look too good, is it noticeable while driving? How about a proper UE chassis? Plus a 'standard' rear differential housing that allows for a straight center driveline? :)

[MonsterMaxx]

the 2028 is nothing compared to the lerner 3080. There's a huge size difference.

I think the 'other side' of the ring gear actually works well. The rear driveline is nearly a straight line and there's room for a motor.

Agreed, balance is way off with all the conversions I've seen. I do have a 'proper' chassis on the drawing board, but to be honest, I'm so sick of every clown just waiting for ue to release something so they can do a crappy copy it for half price, my heart just isn't in RC these days. And the back biting and back stabbing....omg, it's just not worth it.

[jcflyer]

Originally Posted by MonsterMaxx

the 2028 is nothing compared to the lerner 3080. There's a huge size difference.

I think the 'other side' of the ring gear actually works well. The rear driveline is nearly a straight line and there's room for a motor.

Agreed, balance is way off with all the conversions I've seen. I do have a 'proper' chassis on the drawing board, but to be honest, I'm so sick of every clown just waiting for ue to release something so they can do a crappy copy it for half price, my heart just isn't in RC these days. And the back biting and back stabbing....omg, it's just not worth it.

My two cents, don't worry about the copiers they are always gonna be around. That is their way, they know no other. Just FYI k about all the others in this hobby that appreciate people like you.

[MonsterMaxx]

http://www.rc-monster.com/forum/show...light=14%2C000