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  #1  
Old 09-29-2010, 06:41 PM
markbt73 markbt73 is offline
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Default Max Stone 1/16 crawler - teardown pics

My wife bought me this little guy for an early anniversary gift, 'cause she's awesome like that:



Came with a basic 2.4 ghz radio and an 1100 MAH niMh battery. It's about the same size as the Losi Mini Crawler, but 1/3 the price. I have to charge the battery before I can offer any opinions about how it runs, but the fit and finish feels pretty good.

The only trouble is that it breaks my "no RTR" streak. I guess I'll just have to tear it apart and build something completely unrecognizeable out of it to make up for it being RTR.

Last edited by markbt73 : 10-03-2010 at 02:30 PM.
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Old 09-29-2010, 07:10 PM
talon talon is offline
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1/3 the price you say? can you post a few detail pics of the most likely to be ''stolen'' parts (taken for other builds) such as the axles and gearbox?
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Old 09-29-2010, 07:13 PM
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Give us a review. under 90 bucks RTR am i correct?
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Old 09-29-2010, 08:09 PM
markbt73 markbt73 is offline
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Quote:
Originally Posted by talon View Post
1/3 the price you say? can you post a few detail pics of the most likely to be ''stolen'' parts (taken for other builds) such as the axles and gearbox?
Don't worry; there will be a complete teardown soon, and I'll take plenty of photos.

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Give us a review. under 90 bucks RTR am i correct?
Correct: http://www.nitrorcx.com/51c871-maxst...een-24ghz.html

More later; going out to dinner now.
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  #5  
Old 09-30-2010, 10:14 PM
markbt73 markbt73 is offline
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Well, I drove it for a few minutes tonight, until the half-dead AAs I stuck in the transmitter died completely.

A few observations:

- It's slow. Even for a crawler. The gearing is really low, and top speed is elderly-woman-crossing-the-street pace. The transmission is really noisy too; I'm wondering if there's a way to gear it up a bit, maybe take one stage of reduction out, to make it more suitable for a scale-type truck.

- It comes with an extra set of stiffer springs. It needs them. With the stock springs, it flops over to the side as soon as you hit the gas and stays there. With the stiff springs, the suspension feels about right.

- The shocks leak. One is nearly empty. But it doesn't seem to affect performance one way or the other.

- The tires aren't as bad as I expected; they're harder than typical crawler tires, but not as rock-hard as Tamiya CC01 or Hi-Lift tires. They worked OK on my brick pile. The wheels appear to be actual beadlocks, but with plastic locking rings.

- I need to remove the little skid plates on the axles immediately. They get stuck on everything.

- The radio transmitter feels cheap, but everything works fine. The servo has enough torque, too.

- You can't tighten the wheel nuts even a little bit without binding up the axles. I think the hexes are to blame; they're really soft plastic. But on the plus side, it does use standard 12mm hexes, so wheel options are wide open.

So, it's not super-wonder-amazing, but it totally has the right to exist. Now I'm trying to decide what to do with it. I don't really want to spend any money on it, really, but it's hideous and I've never really liked the full-on crawler thing. But I think I can make some improvements to its appearance and make it kinda-sorta-scale-ish with some stuff I already have lying around.
So I'm thinking...
- Scrap aluminum angle for a frame
- Scrap steel pallet-banding material for leaf springs, ditch the useless shocks
- Simple iconic body (old Land Rover or maybe CJ2A) made from leftover .010 aluminum duct material

...or maybe just add it to the pile of half-finished projects I already have going. Regardless, I'll probably tear it apart this weekend, and I'll post photos of the innards when I do.
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  #6  
Old 09-30-2010, 11:10 PM
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little crawler little crawler is offline
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I had started a trend on this when they had first came out. I was asking if it would be any good and everyone said it was ok. I decided no to get it considering how on some review videos, it jurked when you hit the trottle, and it didnt seem that great. Here's the trend:

http://www.scale4x4rc.org/forums/showthread.php?t=45072
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  #7  
Old 10-01-2010, 12:37 AM
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If it's the same as the ones ppl were running here in aus I suggest you ripo the diffs and box apart as there probably wont be any grease of any kind in them. And they are a copy of the Losi, if it's the same as the ones i've seen which it looks to be.
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Old 10-01-2010, 10:07 AM
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A friend of mine bought a pair for his boys to bash around with and so far they seem to be holding up great.
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Old 10-03-2010, 02:37 PM
markbt73 markbt73 is offline
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Some photos of the innards, for the curious:




Axle width is just under 6 inches, tip-to-tip (sorry it's kinda blurry)






Pinion bearing is 4x8mm, but the shaft steps up to 5mm for the u-joint:


Gearbox is completely bone-dry, and has some flashing on the gears. That's why it's so noisy:


Axles are greased inside, and ring and pinion look decent:
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Old 10-03-2010, 04:34 PM
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the axle gears look tough
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  #11  
Old 10-04-2010, 07:59 AM
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Does it use a 380 motor?
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Old 10-04-2010, 08:40 AM
idrockcrawler idrockcrawler is offline
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Looking good for the money. I forgot about these and have been wating on a cheap mini for a nikko-hilux project... might have to order up a couple of these!
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Old 10-04-2010, 06:05 PM
markbt73 markbt73 is offline
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Quote:
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Does it use a 380 motor?
It's a 280. Looks like it's the same diameter as a 380, but a shorter can.

Oh, and just a little taste of what's to come:

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  #14  
Old 10-04-2010, 07:03 PM
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Thanks for the teardown and info! Might be a fun little inoor crawler project for me. 85 bucks is really really cheap.....
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  #15  
Old 10-23-2010, 02:39 PM
mgb mgb is offline
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Any more updates, I picked up a hardbody the other day and was gonna use my mrc, but would really like to add to the collection instead of rebuilding. This looks like it might be the ticket.
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