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which mamba brushless system would i use to get a grandmotorsports car to reach 100mph+ (i.e) motor system, batteries, gearing

Not sure if a Mamba System is capable of 100+. I know that you would need the highest Kv rated motor, and additional cells (Standard 7.2v 6-cells WON'T get you there). I THINK the Mamba systems have a Maximum voltage around 12v. This may be your only limiter on top speed. Check to see if you can find a Brushless controller that has no Battery limit (If it states limits in cells, each cell is 1.2v. Multiply the number of cells by 1.2 and this will give you the max voltage). You will get a little more performance from a LiPo setup, but you still have to watch max voltage. From there, you will have to experiment with gearing to get the speed you want

I have run the mamba setup at 14.8 (2x 7.4v lipo).

The biggest problem is distance. At 100mph, it gets out of range pretty dang fast. With the right gearing, and the top of the line 8000kv competition X mamba, I think you could hit 100. Tim Mohr, was testing a dragster like mine, and getting high 90's, but he was running out of room/signal.

you 'could' try the new Mamba Max 10th scale system instead of a 1/18th scale system. I'll be picking one up soon, and will have a full review.. but not for a few weeks.

Brian

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I saw the photo of Mike Ogle's Grand Motorsports Dragster with the 1/10 Mamba Max ESC and the 1/18 comp X motor . Why Didn't he use the 7700 Mamba motor , was it for motor weight savings , or the fact it uses less amps and can therefor use smaller lighter LiPos . I have the GM Dragspec with aluminium hubs and the 1/18 comp x system , but dont have my LiPo yet .
What times and speeds are these dragsters running over there ?

I'm actually doing a write up as we speak. I was almost done, when I realized it's probably to long, and nobody would actually read it if it was that long. So look for a shorter version asap.

But to answer your question, those little engines are hella fast! With enough room, you should have no problem hitting 70+ mph. Tim Mohr was running the new Mamba Max there, with 24-28volts! (6 or 8 lipo cells!) and it was WAY WAY over powered. He even like Mike Ogle drive (he's the most experienced drag guy around) and 1/2 way down the track, Mike gave it a little more throttle, it flipped the dragster (not due to wind, but power) and destroyed the foam tires. Huge chunks everywhere. Basically, nobody has figured out a good way to harness all that power. (Well, without weighting the thing down) but we don't want to do that, because that takes away speed and acceleration.

Brian

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Do the long version , the more info the better . Did anyone do a full track ( 132 foot ) pass with a Mamba , and how quick was it ?. I have seen 10 cell cars in the 1.7 zone so are we talking similar acceleration?

I will slap the Bigsquid stickers on my car and send you some pics when the stickers arrive .

I got an email from Mike with some more info. Not sure if he saw the post, or if someone sent him an email about it.


I was testing the possibility of still running the small motor with the
larger ESC. Worked great. Boy, it sure made a difference in braking!!! Much
better!

Also, given more time, I'd like to be able to switch around from the smaller
motors to the 7700 Maxx motors, without changing the ESC, too... So I put
the slightly bigger banana plugs on my small motor just so I could keep the
same ESC in there.

It was more for convenience and curiosity than anything else. The regular
Comp X system has run pretty much the same, radar'd at 63 in Chicago, and
clocked at 63 last weekend with the bigger ESC, same motor. It may not be a
performance increase, but it may be a reliability improvement, we'll see...

Here's a copy of Justin Ehlen's notes testing the Mamba Max system on just
three cells:

Hi Mike. You said you run Two, Two-Cell packs wired in series for a total
of 4 lipo cells, but itsn't that beyond the official limits of the Mamba
Speed Control? Also, do you power the receiver and servos with a separate
receiver pack?
I got a Mamba Max speed control that I experimented with at the last race
last Sunday. I only used the 7700kv motor though with a 3s pack for the
first time out with this setup and it was a steady 2.10. It obviously needs
a higher rpm capable motor with more voltage. It's such a nice clean setup
though, I love it.
-Justin Ehlen


So, a three cell car will run 2.10 all day. A four cell car should be below
two seconds consistently, and Tim Mohr's 6 cell dragster... Well, you saw
it... Unbelievable!!!!


Hope this helps.
Brian

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Yeah that does help give me a benchmark to compare to

Big Squid:

I'm thinking about buying a Mamba max 7700 & running 4C Lipo in Funny car. Do you think it will handle 4C Lipo?

Do you recommend the Mamba compeition X package with 4C or Mamba Max 7700 with 4C for my funny car?

When Tim Mohr ran the 6C-8C lipo dragster, do you know what kind of motor he use to power the dragster?

Thanks!
Phillip

I believe he was running the Mamba Max 7700.

I have a few Mamba Max's for review that I'm trying to review.. but have been so swamped.. it's not funny.

The Mamba Max power is insane! It is just so powerful, it's very hard to handle it all. If you can manage to keep the car on the ground... a 4C Max would be great, but I think the odds are slim. At the last race, I tried a 4Cell Mamba Competition X, and could not keep the car under control. I was hitting 40mph, give it a little more juice, and totally loose it. Tim was shreding tires. Unless you have deep pockets, or sponsors, I don't think you want to be doing that on every run. If you want to go Mamba Max, go for it.. but start slow. Even a 2 Cell is probably going to be more then you can handle till you get things dialed in and going straight. Then either work your way to 3, then 4, or maybe make the jump.

The motors are great, but just take the warning, that there IS such a thing as too much power at some point.. especially when your talking light 1 pound dragsters.

Brian

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Big Squid:

I'm trying to measure your definition of powerful (I'm trying to understand). How would you compare running a 10 cells NI-MIH to 2-3c lipo in a funny car? I have been running 10 cells, 14 cells and as much as
18 cells before and just want your thoughts compare to running a 2,3 or 4C lipo. Is there a big difference let say 3C mamba max 7700 compare to 10C NI-MIH in a funny car. I'm about to sell all my brush drag motor, NI-MIH and my Turbo 35 to get money for the new technology. You have been a great help!

Thanks!

When comparing LiPo to NiMh, keep in mind that a NiMh cell is 1.2 volts, and a LiPo cell is 3.7 volts. A 6 cell battery pack provides 7.2 volts, at a heavier weight than a 2 cell LiPo pack with 7.4 volts. The Slight increase in voltage, paired with the weight savings will result in more speed. Even if you go with a 10 cell battery pack for 12 volts, a 3 cell LiPo with 11.1 volts will seem faster, because there is a LARGE difference in weight between the 2.

thenewguy821 is right. Not to mention that most LiPo's will give you better output. They can toss out power much faster then a standard NiMh cell.

When I say powerfull, I mean, pulling the throttle more then 1/2 way will result in your car going airborn, or flipping on the starting line.

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Brian:

I didn't mean to call you Big Squid, but thanks for info!

I understand the weight saving part, has been raicng rc and full size for 10 years. Thanks for the comparison in throttle trigger. This will keep me understand the power ratio compare to LI-PO.


From a stop when you push the throttle, does it go backward first for about 1/4 inch before the car goes forward. ( I got this one from a tech at Castle Creations) He said because is a sensorless system. Do you get this problem?

Do you ever get cogging in the mamba max setup?

Should I go with mamba Max 7700 with 4C?

What Li-Po charger should I get?

What Li-Po batteries would you recommend? MAH?


Thanks for info! You guys have been a great help!

i use the duratraxx ice charger with thunder power battery packs. i have 2 minis and 2 copters that run on lipos.
i hear that apogy have good packs also.

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