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Thread: It's berg time....

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Old 07-01-2008, 07:56 AM   #1
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Default It's berg time....

Been running a very modded AX-10, 1st crawler after 20+ years racing RC, as capable as it is I'm tired of dig headaches and twisting driveshafts.

So I've joined the Berg Army . Started with a stock kit, built it stock to see what I had to work with and what I'd want to change.

Here is what I've got so far:

Custom Chassis, 1/8" magnesium w/delron skid
Clocked ft/rr axles
Stock shocks with internal full droop springs
Tekin FX-R
twin 45t motors
Panther Cougars
Hobbico CS-170 servo
Nomadio Sensor
Hitec micro servo dig.
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Old 07-01-2008, 08:50 AM   #2
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Man that chassis looks great!! I'm gonna be building my own I think too, something just about like what you've done. One question though, and I could be totally wrong on this, but isn't magnesium a soft metal?
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Old 07-01-2008, 09:37 AM   #3
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Thanks, the design is a little of this and a little of that from a few things I've seen or wish I'd seen.

Magnesium is very similar to Al, a little softer perhaps, but also lighter, definelty harder and more rigid than delron and cutting boards some people and companies use so I figure it ought to work. Used to also be a very popular material for axle hubs in 1/12 and straight axle (now Pro-10) racing over Al due to lighter rotational mass.

Time will tell but it seems plenty solid enough so far.
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Old 07-01-2008, 10:46 AM   #4
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And looks really cool when burning.....

OG desert racers love to throw the old VW cases on the fire....
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Old 07-01-2008, 10:51 AM   #5
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Quote:
Originally Posted by Miller Tyme View Post
Thanks, the design is a little of this and a little of that from a few things I've seen or wish I'd seen.

Magnesium is very similar to Al, a little softer perhaps, but also lighter, definelty harder and more rigid than delron and cutting boards some people and companies use so I figure it ought to work. Used to also be a very popular material for axle hubs in 1/12 and straight axle (now Pro-10) racing over Al due to lighter rotational mass.

Time will tell but it seems plenty solid enough so far.
Sweet!! Hope it works out well for ya!!
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Old 07-01-2008, 12:32 PM   #6
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And looks really cool when burning.....

OG desert racers love to throw the old VW cases on the fire....

Yeah, I also use a block of it when camping to shave and help start first fire.

Use caution when grinding and accumalting dust :-(
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Old 07-01-2008, 01:03 PM   #7
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I also run mine full droop. I found that less of an angle on the shocks worked better. It looks like you can move the tops out a little further on your setup. Nice work
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Old 07-01-2008, 01:38 PM   #8
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And looks really cool when burning.....

OG desert racers love to throw the old VW cases on the fire....
Been there! We used to saw them in half and burn em in camp fires.
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Old 07-01-2008, 03:45 PM   #9
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That's an awesome piece of Mo-sheen-ery. Keep up the good work.
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Old 07-01-2008, 04:52 PM   #10
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Chassis looks great dude. I bet it took one hell of a machinist to do something that fantastic!!

That thing is going to make a real stink out of our next comp....

Ben
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Old 07-01-2008, 04:59 PM   #11
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Quote:
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.... One question though, and I could be totally wrong on this, but isn't magnesium a soft metal?

Actual hardness, I bet it's about the same as aluminum. Mag machines much easier and is much less gummy when compared to aluminum. When you look at it as a structure, mag will probably have the advantage in almost every case. As Miller Tyme pointed out, dremel grinding should be avoided. The dust will be very ignitable.

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Old 07-01-2008, 05:58 PM   #12
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Yeah, I knew it was extremely ignitable. I umm used to know somebody when I was a little kid that would bring 55 gallon cardboard barrels of the stuff to a big woodpile and burn it... I'm assuming it was shavings from a mill, cause it was all itty bitty flakes/chips....talk about lighting up the night...
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Old 07-01-2008, 06:03 PM   #13
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Your wheels went out yesterday

Mayhem eng.
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Old 07-01-2008, 06:32 PM   #14
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Your wheels went out yesterday

Mayhem eng.
Awesome news, Thanks for the Info

This brings me to the next stage, things I plan to do next:

Mayhem Engineering wheels, wide stance is killing some of the tight maneuvers .
Dual FX-R Speedos, coupled with the flexibility of the Nomadio, this will be fun
Bent rear links
Replace bug body I've been running with Prolines C-10
Definitely need to Loc-Tite all the bolts seems all tapped holes are a little oversized.
Tweak the steering links to clear wheels/tires
What ever else I can find to fidget with.


I'll post more pics as the project progresses
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Old 07-03-2008, 09:18 AM   #15
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I did the unthinkable Ken... I'll call you soon.

Bne
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Old 07-03-2008, 09:45 AM   #16
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I did the unthinkable Ken... I'll call you soon.

Bne
Someone got a Berg......
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Old 07-03-2008, 10:24 AM   #17
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Phase II

Dual FX-Rs Placed them on a piece of Lexan 't' shaped to seperate the solder posts jumpered the Batt post together.

Built plates for front axle to place lead, 4 1/2oz each side, prefer not to add rotational mass and stress to steering servo.

Replaced link ends with Axial on steering, trying to lower stack height to clear tire...when the Mayhems get here:-P

Mounted the Battery in chassis, sits below the upper shock mounts, even though it is not on the upper front link where I'd prefer it it is actually lower and has more room here. Thought about mounting it lower under the radio gear but the combined weight of the 2 esc's and Rx a about a wash with the 3oz Lipo.
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Old 07-03-2008, 10:26 AM   #18
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I did the unthinkable Ken... I'll call you soon.

Bne
Suppose I'll see a similar post from Seth now, Yall just gotta copy me don't ya

Give me a shout we'll talk set-up some more, maybe even a few custom parts I could even dremel another chassis for you if you want
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Old 07-03-2008, 10:41 AM   #19
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I'm still looking at stick setups on the clod threads. I might try doing a stick version first to see what it's like. You know how I am dude, the only way to get it out of my system is to just let me do it.

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Old 07-03-2008, 10:01 PM   #20
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Suppose I'll see a similar post from Seth now, Yall just gotta copy me don't ya

You just might! The problem I have is that I need better 3rd channel control. I do not have what I want out of both my $300 plus dollar radios, what I really want is the nomadio, so I would have to buy a $400 radio a $350 berg put another $300 in ESC's then spend $100 on a servo $120 on new rims and $70 on brushed motors $50 on new tires another $100 on a chassis that would work.

So you see my problem. I cannot spend another $1500 on any form of R/C right now. And you know this is the only way I would do it. I still have night mares at how JAKEY my helios 3rd channel is, I have contemplated starting a protest aimed at KoPropo to force a recall on all helios ex10's for the lack of 3rd channel control.
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