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Old 01-20-2013, 04:44 AM   #1
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Default xkill's 2013 build

This is how I started, more than on year ago.
First Build: Bully Havoc

With the double fxr and stick radio the car was really nice to drive.
The RTR weight was 2525g and that's not too bad for a bully with a cast front as LW rear...
Even if I was happy with the car... Let's face it, we are never happy!

So the 2013 project started.
For now, the chassis.

I did the design and a friend cut it out of CF.
It was inspired on the Sinister Pro but I think I manage to make it different and I can change the set up in many different ways. Since this is the first time I'm doing something like this I want to be able to try different thing for future projects.

These are the cuts



And this is how it should look like put together



I tried to do a mockup with some axles...





I tried to design it for 4'' shocks or a bit smaller, but that is one of those things that I'll have to test...
With the long skid plate I'm looking for a 75/80g chassis.
I'm a bit sick at the moment but I'll try to put the chassis together ASAP.

I'll have to think about where to put the electronics but that's part of the fun!
At the moment I'm looking for some wheels but the new ones (Like D-Lux or VP), are very expensive and the shipping from the States kill's it for me... I just have to keep my eyes on the "for sale" section

Tell me what you think.
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Old 01-20-2013, 10:47 AM   #2
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Default Re: xkill's 2013 build

This afternoon I felt a bit better and manage to go to my man cave and get my tools to put the chassis together.

This is what I ended up with:



The weight will still go up because I'll had a full skid and the skins. Maybe 70g or something like that...
From what I have seen maybe I'll have to try to make the upper link mounts a bit lower but that's easy ;)
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Old 01-21-2013, 09:09 AM   #3
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Default Re: xkill's 2013 build

Looks great! I wish I knew someone with the tools to cut a chassis.
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Old 01-22-2013, 08:32 AM   #4
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Default Re: xkill's 2013 build

Sick looking chassis!
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Old 01-23-2013, 02:59 PM   #5
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Default Re: xkill's 2013 build

Only 2 comments? The bully section really has the thoughest of crowds!

For the axles I went with extra wide D-Lux tuber with D-Lux servo mount.
I drilled the bully knuckles to take the 6x3x2.5 (flanged) bearing but I'm not so convinced... I can't tight the bolts at all or the knuckle wont turn...

Also the super bully shafts don't allow the same angle as tthe 2.2 V6, and that sux!


The guilty party


But, after a trip to meet friend of mine...

They are now turning the same, if not just a little bit more

The gears for the back axle were lathed down to 2mm, the ones I have in the front were lathed to 3mm and are about 8gr heavier (stock gears are 80gr)


Here's the final result:





Compared to:





Yesterday and today I was eyeballing the links.
Everything will still provisional but I have no bind and the upper links are straight, something that I wanted (more on that later)



I had to molest D-Lux servo mount...


And I just had to put some wheels on, just to have a look at the stance!


Just for future reference...



That's it for now...
The car is now tooooo wide in the front. I have to buy some new wheels for sure! I know what I need and what I want, the problem is the cost, especially for the shipping
Around +300$ for wheels alone is heavy on the wallet...
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Old 01-24-2013, 08:59 AM   #6
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Default Re: xkill's 2013 build

Very interesting build.. Subscribed, its nice to see the bully's get some love.
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Old 01-24-2013, 09:18 AM   #7
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Looks good man!
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Old 01-25-2013, 05:43 AM   #8
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Default Re: xkill's 2013 build

Here is an idea for the skid plate. I used some thicker lexan and a bent some tabs 90 degrees and attached it to the sides. Works great.
Attached Images
  
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Old 01-25-2013, 09:13 AM   #9
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Default Re: xkill's 2013 build

Thanks for the tip Josh.

The skid is on the to do list, after the definitive links are done
I already have a 1mm lexan sheet waiting to be cut and the mounting tabs done.

How's your new CF chassis working for you?
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Old 01-25-2013, 11:57 AM   #10
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It is working great. Light weight and tough as nails. Don't forget to sand off the edges and seal it with CA glue to keep it from delaminating.
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Old 01-26-2013, 07:00 PM   #11
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Default Re: xkill's 2013 build

the bully looks good
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Old 01-30-2013, 04:08 AM   #12
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Default Re: xkill's 2013 build

I was in a battle to make up the links.
The bottom links are 4mm stainless steal, I hope the will be up for the job.
I was struggling to do the treads on them, they would stay steel!!! I can't imagine the titanium ones....

The upper links are aluminum.
I don't know how long they will last but because they are straight tey might have a chance. We'll see....



I also made some adjustments to my "things" mount.





In the end the links were a bit on the long side and that increase my wheel base.
But since I can adjust the wheel base on the chassis mount everything is now under the rules!
It's nice to be able to adjust the wheel base in a very simple way.
For now they will remain like this.



Now I'm missing some stuff to continue with the work but I'm happy with the way it's coming along.
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Old 03-25-2013, 03:08 PM   #13
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Default Re: xkill's 2013 build

Today it was time to mount the wheels



Beadlock made out of CF and plastic and, so far, with stainless hardware. So far they are 0.7'' wide. I'm still missing the VP hubs.

Comparing with my old wheels:





Initially I was not going to shave my rear tires but after this:





I think I have work for tomorrow!
The weight difference is considerable!
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Old 03-25-2013, 05:34 PM   #14
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Default Re: xkill's 2013 build

Good find on the steering difference between the 2.2 and the super axles. I should have noticed when I used them. I noticed a difference and never thought much of it. Seeing the two side by side I see I have been missing a lot of steering. Good work and good thread. I am especially fond of your single vertical plate chassis. I got the idea from flying profile airplanes.
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Old 04-04-2013, 08:24 PM   #15
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So, I was going to put my Vanquish hubs on the wheels and finally mount them up.
After one month of waiting I can say I was really looking forward to do this!!

Hub on the wheel, M3 screw on the screwdriver and.... Oh shit...
The hubs are threaded to some API threads!!!! The metric screws are a no go...
Now in Portugal is not easy to buy API screws.
Could I try to tap the hubs for an M3 screw?
Would that work?

If not, can anybody tell me the size of the screws for the VP hubs?
For a company that sells world wide I think it's not very smart to use that kind of threads because in most of the places they are really hard to find.
Hobby shops here don't stock anything that's in inches...
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Old 04-04-2013, 09:21 PM   #16
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Default Re: xkill's 2013 build

Quote:
Originally Posted by xkill View Post
So, I was going to put my Vanquish hubs on the wheels and finally mount them up.
After one month of waiting I can say I was really looking forward to do this!!

Hub on the wheel, M3 screw on the screwdriver and.... Oh shit...
The hubs are threaded to some API threads!!!! The metric screws are a no go...
Now in Portugal is not easy to buy API screws.
Could I try to tap the hubs for an M3 screw?
Would that work?

If not, can anybody tell me the size of the screws for the VP hubs?
For a company that sells world wide I think it's not very smart to use that kind of threads because in most of the places they are really hard to find.
Hobby shops here don't stock anything that's in inches...
I have tapped vp hubs to 3mm before. It works ok, but not great for the long run. If you tapped them, screwed them to the wheel, and never took them off you might be ok. There isn't enough material in the hole to get a clean 3mm thread, so that's why it doesn't work too well.

The screw size for vp hubs is 4-40. Fasteners express is the site I use to get all of my hardware, but I mostly purchase aluminum. They do have steel screws as well so it's worth a look.
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Old 04-29-2013, 01:16 PM   #17
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Default Re: xkill's 2013 build

Today I had a full day dedicated to the car!
Ohh how I messed day's like these!!!

This was how it was. (I bought some 4/40 screws for the hubs)





After the photo shoot, time for work!
I was still having problems with the bearing on the knuckles (now I was tying without flange). Everything was still getting hard to move when I tighten the king pin screws!
So I made some aluminum washers to serve as spacers. After a lot of trial and error, everything e smooth now.



My jig to move the bearing out as they are very tight.



After lunch the plan was simple!
To do a battery mount!
Simple right?! Sure!
It took me +4h...

I was half way when I remembered the photos...



Mount it, test it, take it out, change, mount again. (.....) Repeat!



Final product with some paint. I'm happy with it, but testing will make it or brake it.





With an 800mah gens ace



When I was at work I remembered where I took take some weight out of the back without the extreme cut that I made on the front.
The Before:



Can you see all that FAT?! I sure can!!



Half way.



Be protected



FAT no more!!!



Yes, only 6g. But 6g on the back axle are always better than 0g!
And now I remembered that I could take some more since I'm not using that screw....



And what do we have here?!



Bling Bling!! (45T)



Axles ready!



Lets see if I can do something tomorrow.
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Old 05-03-2013, 04:53 AM   #18
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Default Re: xkill's 2013 build

Nice rig
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Old 05-03-2013, 10:21 AM   #19
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Default Re: xkill's 2013 build

Thanks!

Some more progress.

Side skins



The rest of the skins and under body.



Chassis definitely assembled.



New rod ends.



A bit more.



I'm still not happy with the shocks that I'm using in the back...
Some "El Cheapo" shocks.
I'll have to work a bit more on that.



Bead lock screws for one wheel.

Stainless



Aluminum



It's a roller (again ) this time definitely.







Now I have to redo my electronics.
I was using a FXR Pro and FXR.
Now I take out the Pro and do 2 FXR

Still I had to try and get some weight!
With the "old" electronics and a nanotech 850



With a Gens Ace 450



Not bad for a Bully!
For what I saw weight bias should be around 60/40 and that sound very good without any added weight.
We'll see ;)
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Old 05-04-2013, 04:23 PM   #20
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Looks great.
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