RE: Xray M18T and M18MT RTRs!

RE: Xray M18T and M18MT RTRs!
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RE: Xray M18T and M18MT RTRs! - 11/18/2008 1:22 PM

DettaDude

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quote:

ORIGINAL: Outrageousmagic

Hey, I had a question for all of yall who have an Xray M18T or MT.

To get strait to the point, how strong are they? I have a mini quake and all its ever done is break. It just doesn't seem capable of handling the power and speed I want (though I must say I've never driven it that fast, it always breaks first). I've always heard that the Xrays are much better/higher quality. I have a Permax 400D, and am wondering if M18T or MT is capable of handling the power (or even using the motor)? or is the Pro version needed such power??

So I guess I'm mostly wondering if the Xrays are better than the mini quakes?

Thanks,
Joshua

Your Quake is basically a basher truck, while the M18T is a racetruck.
The first is primarily intended to do not much more than tooling around in its stock configuration, while the second can not only handle higher speeds of modified motors but has the ability to survive a lot more bumps and jumps.

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RE: Xray M18T and M18MT RTRs! - 11/18/2008 1:23 PM

RC Huligan

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quote:

ORIGINAL: rschoi_75

Once everything is factored in, the pro kit is actually the more economical choice imo.

He's right about this. Given all the upgrades that come with the XRAY M18T PRO, you can't beat the price. It's our best seller for this reason. We have four of the NT18MTs and they are very durable.

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RE: Xray M18T and M18MT RTRs! - 11/18/2008 1:37 PM

alex.guzun

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my vote for XRAY M18T PRO from rcxray.com

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RE: Xray M18T and M18MT RTRs! - 11/18/2008 2:27 PM

Outrageousmagic

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quote:

ORIGINAL: rschoi_75

quote:

ORIGINAL: Outrageousmagic

I have a Permax 400D, and am wondering if M18T or MT is capable of handling the power (or even using the motor)? or is the Pro version needed such power??

So I guess I'm mostly wondering if the Xrays are better than the mini quakes?

Thanks,
Joshua

Get the Pro version. Its not that the others can't handle a permax 400D (they can) the main reason is that the pro kit comes with the raised motor mount which can accept 28mm diameter motors. The other models come with the stock plastic mount which can only accept up to 24mm dia. motors. The pro kit also comes with cvd's, while the original kits do not. These are a necessary upgrade for brushless power. Once everything is factored in, the pro kit is actually the more economical choice imo.

On a side note, I think a permax 400d may be too big for the m18t in general. The pro kit is very, very light and the permax is one heavy motor compared to mambas or other 20mm motors. I've used an ammo 28-35-5100 in mine before, and the performance suffered compared to a lighter hacker e3 motor. It was more sluggish to turn and definitely off balance when used with a lipo pack. Of course its fast in a straight line, and the motor is powerful.... but it's like putting a hemi into a go cart... it just doesn't need all that power.

Thanks guys.

It's not that I'm dying to use the permax with the xray, it's more that I'm trying to avoid buying a new system. I'd also like to use my lipo with the xray, and I'd have to use a brushless system for that. I was planning on cutting the power way down on my remote, maybe, say, 50%. But if you don't think it would be smart, then I trust your judgement.

Thanks,
Joshua

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RE: Xray M18T and M18MT RTRs! - 11/18/2008 2:48 PM

Mr. Mugen

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What lipo are you planning to use?

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RE: Xray M18T and M18MT RTRs! - 11/18/2008 4:15 PM

rschoi_75

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quote:

ORIGINAL: Outrageousmagic

Thanks guys.

It's not that I'm dying to use the permax with the xray, it's more that I'm trying to avoid buying a new system. I'd also like to use my lipo with the xray, and I'd have to use a brushless system for that. I was planning on cutting the power way down on my remote, maybe, say, 50%. But if you don't think it would be smart, then I trust your judgement.

Thanks,
Joshua

I understand your situation. I hate having to buy new components when I already have stuff sitting around. Give the permax a shot, and if you feel like you can live with it, then go for it. If you feel like its messing up your driving style, sell it and buy another motor. I'm sure you can sell your permax for a good price since they are highly sought after and nearly impossible to find now days.

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RE: Xray M18T and M18MT RTRs! - 11/22/2008 9:05 PM

pete2222

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http://m18mt.blogspot.com/

Have finally got the new 6800KV in. Had to buy a new motor mount and screws. First impression is that as expected it's faster than the stock motor by quite a bit. Everythng is holding up. No broken drive shafts yet.

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RE: Xray M18T and M18MT RTRs! - 11/22/2008 11:13 PM

DarkHorse

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Like the little video clip

, nice jump. You'll probably start breaking a bit more doing that plus the extra speed. The runtime should increase unless your using more of that extra power reserve

I've dropped in a E-flight 4200Kv 54T/8T pinion and a 600mAh NiMh pack for slower indoor messing about (bad weather, too cold). Still a bit too much Kv for crawling slower than walking pace with M18MT tires. I don't think it's as good as the stock brushed motor for the slow torque obstacle climbing, so I might try the old original setup just for that purpose as I have a couple of redundant motors to play with sat on the shelf. Of course the top speed will be pretty slow with an 8T pinion also. The brushed setups use more juice less efficiently (wasted energy as heat), that old brush gear probably doesn't really like 3s voltages anyway. I might try out the Mamba25 wiring diagram for brushed motor usage, see if it works...

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RE: Xray M18T and M18MT RTRs! - 11/22/2008 11:35 PM

pete2222

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I won't be going back to the skatepark just yet after all the money I've just spent on upgrading

I would rather go outside even if it's cold. Running indoors= too much grief from my wife.

600mA won't last long will it?

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RE: Xray M18T and M18MT RTRs! - 11/23/2008 8:02 AM

DarkHorse

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> 600mA won't last long will it?
I didn't think so either but at low speed on a tuned down brushless setup it lasts long enough (on brushed it might be a more noticeable problem). 3 old 7.2v packs laying around doing nothing and wanted to find a use for them, where the 3s voltage was like an uncontrollable bullet in smaller spaces.

Yes, ordinarily not many would even bother to try what I am fiddling about with... and because I haven't yet got defined roles for all 3 m18t/MT Pros that I partly recently acquired to add to the 2 other original m18t/MTs. I really should decide what I do and don't need and sell off some combo's... a seller I am not so don't hold ya breath

.

< Message edited by DarkHorse -- 11/23/2008 8:03 AM >

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RE: Xray M18T and M18MT RTRs! - 11/23/2008 5:44 PM

pete2222

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Hey Darkhorse, that's quite a collection of 5x M18T Perhaps you should think about selling some to get through the credt crunch?

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RE: Xray M18T and M18MT RTRs! - 11/26/2008 9:22 PM

bmoir

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rebuilding my m18 as I type

< Message edited by bmoir -- 12/1/2008 12:04 AM >

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RE: Xray M18T and M18MT RTRs! - 11/27/2008 1:20 PM

alex.guzun

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Guys, anyone knows what is that radio came with RTR
I saw the same for LRP, HPI...

Thank you

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RE: Xray M18T and M18MT RTRs! - 11/28/2008 5:05 PM

RC Huligan

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quote:

ORIGINAL: alex.guzun

Guys, anyone knows what is that radio came with RTR
I saw the same for LRP, HPI...

Thank you

Are you just wanting to know what's the XRAY RTR radio? Follow link. Here's some info on how good the RTR radios are.

< Message edited by RC Huligan -- 11/28/2008 5:06 PM >

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RE: Xray M18T and M18MT RTRs! - 11/29/2008 9:49 AM

DarkHorse

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FWIW, for now I settled with using a redundant Atomic ST-18 brushed motor and Viper Eco20 ESC. 7.2v 600mAh, 54T/8T pinion for the slowest speed and better zero speed torque. Still ~12mph max and not a proper slow crawler setup, more usable in small spaces and stronger than the stock setup.

Note that if you stumble across one of these brushed ESCs which are a sealed water proof design and a bit heavy at 55g, rated to 12v (4-8cells) but don't have any lithium low voltage cutoff feature. Options limited and the reverse seems to have a slow ramp up effect (and would prefer not to have), as opposed to the forward that will pickup more immediately.

I tried the Mamba25 wired for brushed motors... wouldn't bother unless it's a last resort (unless I missed a trick) as the ESC throttle behaved more like a switch (on or off) and only gives forward, no reverse. Seems to loose power above 50% throttle. Didn't seem right anyways.

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RE: Xray M18T and M18MT RTRs! - 11/29/2008 3:14 PM

alex.guzun

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quote:

ORIGINAL: RC Huligan
Are you just wanting to know what's the XRAY RTR radio? Follow link. Here's some info on how good the RTR radios are.

Thank you, but i rather get some info about generic name of that transmitter. Maybe there is a common name for that, maybe there are some mods and so on, but don't know what to search. I think we could easily add 3rd channel to it, coz HPI has the same tx with 3 channels.

< Message edited by alex.guzun -- 11/29/2008 3:15 PM >

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RE: Xray M18T and M18MT RTRs! - 11/29/2008 5:45 PM

RC Huligan

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quote:

ORIGINAL: alex.guzun

quote:

ORIGINAL: RC Huligan
Are you just wanting to know what's the XRAY RTR radio? Follow link. Here's some info on how good the RTR radios are.

Thank you, but i rather get some info about generic name of that transmitter. Maybe there is a common name for that, maybe there are some mods and so on, but don't know what to search. I think we could easily add 3rd channel to it, coz HPI has the same tx with 3 channels.

Yeah, I don't have mine with me right now or else I'd look for a manufacturer.

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RE: Xray M18T and M18MT RTRs! - 12/6/2008 4:43 PM

DarkHorse

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Bunch of Czech guys video Hudy M18MT Hall Race.
Most seem to be rolling the slippery stock Chevron tires,
geared for pretty low speed and yield pretty long brushless runtimes.

More here.

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RE: Xray M18T and M18MT RTRs! - 12/6/2008 5:59 PM

pete2222

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I want to get some replacement pinions as mine are now getting quite worn sincce I put my new motor in. Can anyone advise whether the stock ones are the best, or are there any others that are better or pehaps cheaper
Thanks

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RE: Xray M18T and M18MT RTRs! - 12/6/2008 6:04 PM

pete2222

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quote:

ORIGINAL: DarkHorse

Bunch of Czech guys video Hudy M18MT Hall Race.
Most seem to be rolling the slippery stock Chevron tires,
geared for pretty low speed and yield pretty long brushless runtimes.

More here.

They should put some jumps in their track!

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RE: Xray M18T and M18MT RTRs! - 12/6/2008 6:08 PM

DarkHorse

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Stock plastic 9T to 12T last many sessions if the don't slip on the motor shaft, heat up and melt off centre or skip. They don't last forever though, grit and sand doesn't help life span either. The metal 48 pitch pinions last longer but make more noise and you end up replacing the 54T spur gear instead, which also takes an extra 5 mins.

> They should put some jumps in their track!
yes might as well

.

< Message edited by DarkHorse -- 12/6/2008 6:10 PM >

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RE: Xray M18T and M18MT RTRs! - 12/11/2008 4:44 PM

bmoir

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Looking for some wisdom on 2 issues.
1. Running my M18MT with T wheels and tires and sway bars. Recently, my suspension is way weak and the chassis bottoms everywhere. I ran out of plastic spacers for the shocks. So I have re-installed the second front shock tower and now run four front shocks with all the spacers on the two back shocks. Seems to have solved my problem. I did rebuild the shocks, bled the oil and what not. Does having four shocks on the front have any disadvantage? Has anyone else had saggy shocks? I know the T team comes with the nitro springs.
2. I have upgraded my rig, starting with an MT turning it into a T now with quad front shocks with x-ray driveshafts, alum. motor mount, alum steering knuckles. I am running the X-ray power pack and am looking to take the next step in power. I plan on racing on a tiny carpet track where I hardly run full speed. am I better off just getting a better battery pack. I do not know anything about Lipo but my charger can handle 1-3 cells. I also don't know much about the brushless setups but realize most people are running them. Any help would be appreciated.

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RE: Xray M18T and M18MT RTRs! - 12/11/2008 6:33 PM

DarkHorse

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> my suspension is way weak and the chassis bottoms everywhere.
try the 2 gap shock pistons, they are much more resistive. See this post.

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RE: Xray M18T and M18MT RTRs! - 12/11/2008 6:57 PM

pete2222

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Getting some alternative stiffer shock springs may also help. I got some of the black ones that are for the NT18MT. Also,have you tries putting some of the rear shock springs on the front. They are a bit longer.

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RE: Xray M18T and M18MT RTRs! - 12/11/2008 7:01 PM

bmoir

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Roger that! Different pistons. Makes more sense than adding the shock tower and shocks again.
The car does look cool with the quad shocks just like an old 79 Chevy pickup I use to have!

I do have an extra set of rear springs, another good one. It is amazing how I was at a loss last night but there are multiple solutions that are way simple.
thanks for the help

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