serpentguy

My Feedback: (1)

I read in another forum earlier today that someone said there is video of an RC18t that will do 81mph on RCU. I have yet to find it. Could someone please provide link as I would be highly interested in seeing this? I am currently working on a BK/Lehner/ 6 cell Lipo brushless set up for mine.

moose_guy70

you probably want the mini forum

bigmike882

umm, this is the mini forum.

bigmike882

Also, I think that is physically impossible to make a mini go that fast. Even if it was, theres nobody that would be able to handle it at that speed.

Nitronutt

My Feedback: (2)

I have seen the Mamba 8000kv video where the 18T does 61mph in a parking lot - measured with a radar gun.

The reason that it can't go faster is that it literally wants to fly. They had to remove the front bumper to even hit 61. It constantly tries to take off (Like a plane). You would need to significantly lower the truck and use a body more designed for downforce. Even at that, the truck is only 1.5lbs, so traction would become an issue. With the 8K, from what I read, it takes a very controlled throttle finger to even drive it, let alone control it.

Irlsh

My Feedback: (4)

not only is it hard to handle.. its the surface that is the main problem finding a smoo long road way for such a little car. it is possible i have to say but not under normal driving , you have to set the steering down and use SOLID rubber tires or the stock will just expand and make u lose control .. thats why the smaller onroad cars do better in speed when using foam.

-Inverted-

can you say AIRPLANE RUNWAY

Irlsh

My Feedback: (4)

practically yea

.. tennis courts are usually good to but just not long enough and then you hot a fence..lol studt used to use track and field for running thatsnot a bad idea but some have to be smooth. i used to love the top speed in my minit within golf courses just cant get a acurate MPH reading etc...

mariodx3

you might try here you just have to look for it.... if you don't know the name of the video.


http://www.rcuniverse.com/mvp/mvpposts.cfm?videocat=22

Tigger N. Bennie

And that's why I use foams on my Xray M18. Wing adjustment is very important. By the way, there are some very large parking lots if security lets someone use them--large malls.

savagedan89

my gose about 50 on normal setting it has a 6800kv mamba and a reedy minmax 1100mah and the factory kit

Tigger N. Bennie

Seems kind of high considering the 6800Kv with a 3-cell Lipo was rated at 50mph in a Losi Mini-T (stock gearing). Myself, I had the 8000kv motor in my RC18T until I changed out the motor.

Competition Package: 6800 Kv
Stock gearing Mini-T
3 cell lipo = 50mph
2 cell lipo or 8 cells = 40mph;
6 cells = 27 mph (the Reedy Mini-Max 1100 is a 6-cell)

Here is the link to the rated speeds.
http://www.castlecreations.com/suppo...a%20Setups.pdf

Irlsh

My Feedback: (4)

i havnt even put a brushless in my rc18t i run the krystal still

itspuddingtime00

I doubt it. Mine doesn't even go 50 with my minimax pack and I have the mamba 8000 and onroad tires. I'd guess yours does about 30 flat out.

Tigger N. Bennie

Taking it easy now days?

xilix

My RC18T with the 6800 goes approx. 50mph and it's running on 9 gp1100 cells. To unlock the Mamba's real potential you NEED to run more than 6-7 cells or go 3-cell lipo. When I run a 6-cell pack it just seems wimpy compared to the 9.

Irlsh

My Feedback: (4)

tig yanno what it is reallly. member all the hype when it was comming out? i went to the hoby expo here in chicago at the time took all the pics etc.. i think i just dont want to beat on it lol like this will be one that is used lightly lol i remember being on eggshells waiting for it lol.

but i still run one brushless xray m18 and one mini-t brushless. and another xray with a krystal...lol i just got to know when to stop ..lol honestly i like runnin somewith the krystal or any 300 motor the torque response is always more fun.. for my tatse. the brushless was only fun for me when i was going for records lol... but not practical for me. im sure you can relate.. :P im waiting on the nitro xray and one of those 1/16 nitro not sure which yet, wish there was a factory half 8 already.

Valve

I just put a Mamba Competition X (8000kv) in my new RC18 factory team kit. I put the highest gearing on it (that the kit came with), I think it's 14/55. Is this gearing too high for a Reedy 6 cell pack? In low throttle, the mottor buzzes and hesitates. It just vibrates and won't move. Sometimes it will do this in full throttle from a stand still. I have the starting power set to full, and the timing advance on setting 3 (race). Should I go with the 12t pinion?

Also, what are your opinions on the LiPo packs? I've heard that they will explode/rupture easily. Are they too dangerous? What company's lipos would you recommend, and how many cells? I think I read in the manual that a 3 cell lipo will void the Mamba's warrenty, does this meen that the high voltage can easily destroy the speed controller?

Sorry for all the questions, I'm just really curious about this stuff.

Tigger N. Bennie

And it's killing you--the wait that is. I don't plan to get one of the nitro mini trucks, but I had to get a nitro mini buggy to "bridge the gap" with my other buggies. Soon the Rosemont show will happen again.

Valve,
Try lowering the timing. Did Castle change the warranty? It used to be that a 4-cell lipo wasn't recommended. Here is the link to the Mamba-25 user's guide: http://www.castlecreations.com/suppo...er%20Guide.pdf

moose_guy70

It wasnt the mini forum it was moved here

Valve

Yes, I misread it. It says it will operate on 2-3 Lipo cells. I will look into getting a 3 cell pack, but not anytime soon. I will need to buy a charger that will charge Lipos. Until then, the 6 cell will do fine. It's still fast as hell.

Nitronutt

My Feedback: (2)

Some have said that the connectors and the cells make a big difference in how the Mamba performs. The Mamba (Especially the 8K version) is designed to spin...Therefore you don't need to up the gearing. By upping the gearing, you are putting too much strain on the motor. It can spin almost 90,000 rpm with a 3 cell lipo, so don't sweat the gearing.

Access

Yeah my mamba mini-T is geared as low as it will go, 9-tooth pinion and then with a heatsink and fan to keep the motor cool, 3-cell LiPo pack. At 40mph or more, you can go in a straight line and not much else, any turning causes the lightweight truck to tip right over. Maybe you can get slightly better with 4WD, but not much I don't think. Modern LiPo's are a necessity, the voltage holds up better than NIMH under high current drain. 4-cell LiPo will void your warranty, 3-cell is a necessity for speeds over 35mph or so.

I was told to gear the thing down as far as you can, since the motor doesn't have a lot of torque at the high-end overgearing will only hurt you.

The connectors do make a big difference, I use deans on all my minis after melting too many of those standard mini connectors and the deans work great.

Valve

I use deans connectors on mine. I raced my RC18 with the 8K mamba at my LHS last night. I love the motor, even though its fast as hell, I was able to control it very nicely on the small track. The only problem was the chatter... how the motor just hesitates at low throttle from a stand still. That along cost me several seconds and in the end lost me the race. From what I'm hearing, a 3 cell lipo will fix any chatter problem. Can you guys give me a link to a 3 cell LiPo that will actually fit in my RC18? I saw one on Tower then I saw the same one at my LHS and it was way too big.

Irlsh

My Feedback: (4)

Yea tig not having the rosemont show this year killed me first time in a very long time of going..lol i will prolly get one or the other unless i get impulsive wich is not uncommon when i have my hands on one. suposidly i will have my nitro xray by next week sometime so the hobby shop says... i was the first on pre order list. he said i can have 2 if i want but i know ill just end up selling one..lol