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-   -   Xkill's mini (http://www.rccrawler.com/forum/losi-mini-rock-crawler/602586-xkills-mini.html)

xkill 09-28-2018 07:10 PM

Xkill's mini
 
Is there anybody still here?!:cry:



Eurocrawl is coming next year and I'd like to run another class.
Mini sounds like a fun and cheap way to do that. Super would be another story, besides they are harder to pack and travel with :flipoff:


So this is what I got on the mail:


https://farm2.staticflickr.com/1932/...48f023cc_z.jpg


100% RTR losi mini pro with a Novak 18.5 sensored brushless combo, all for a reasonable price.


https://farm2.staticflickr.com/1904/...2d183ce7_c.jpg


Body is used but still in reasonable shape


https://farm2.staticflickr.com/1960/...7e76e9e6_c.jpg


https://farm2.staticflickr.com/1970/...3c283ae7_c.jpg


Aluminum C-hubs with a lose pin that is already fixed.


https://farm2.staticflickr.com/1978/...50ac0522_c.jpg


15t pinion was also included :mrgreen:


https://farm2.staticflickr.com/1972/...30a54fcd_c.jpg


A trip to the garden for some testing... It all worked!


https://farm2.staticflickr.com/1917/...d12b3461_c.jpg



But I hate the small screws so SolidWorks and 3D Printer to the rescue!


https://farm2.staticflickr.com/1917/...03e7e2bb_c.jpg


Had to print the object in a different position, this led to poor looks but, more importantly, a nice place to set the bearings.


https://farm2.staticflickr.com/1961/...04851563_c.jpg


New top link mount


https://farm2.staticflickr.com/1942/...9ae79621_c.jpg


Might need to make a V2 of this but for now it works.


https://farm2.staticflickr.com/1948/...dc4e6c38_c.jpg


https://farm2.staticflickr.com/1972/...61b41864_c.jpg


(Yes, I know the upper link on the chassis side is in the wrong side...)


https://farm2.staticflickr.com/1910/...4d19c1c1_c.jpg


This now looks better and gives be more options for tunning.

https://farm2.staticflickr.com/1970/...0b6eb481_c.jpg


https://farm2.staticflickr.com/1955/...880523ba_c.jpg


Poser shots


Still lots of work ahead but having fun for now!

Perkul8r 10-04-2018 01:08 AM

Re: Xkill's mini
 
Nice to see someone else working on a mini again lol. There isn't alot of action on this part but theres a few of use here that still run lol.

Stollenritter 10-08-2018 06:01 AM

Re: Xkill's mini
 
I run the same motor/esc and really love it!
Run the same tires as well.
Yes, screws are small but these Minis are a blast to drive!

Have a good time with your Mini "thumbsup"

xkill 10-09-2018 10:27 AM

Re: Xkill's mini
 
Drove it this weekend on real rocks and the car feels ok.
Still a lot of work ahead but it's a great start!
So far I liked the motor/esc combo more than I thought.
Some other parts are on the way to keep this moving forward.

xkill 12-03-2018 04:47 PM

Re: Xkill's mini
 
Mini build continues.

Next on the agenda was the front axle.
The plan was to use (cheap alloy), AX10 c-hubs, bully v1 knuckles, 8mm stub universals (cheap and strong), and very short hubs to keep it legal.


5$ chubs


https://farm5.staticflickr.com/4850/...015019b8_c.jpg



6$ Unis



https://farm5.staticflickr.com/4901/...8f22c28a_c.jpg


Bully v1 Knuckles from my Pro.
They were done By D-Lux a few years ago.


https://farm5.staticflickr.com/4908/...f502d90c_c.jpg


https://farm5.staticflickr.com/4859/...4de9e2dc_c.jpg



Half way done

https://farm5.staticflickr.com/4860/...49c6de94_c.jpg


The hubs are ultra short and made out of magnesium (for the simple reason that I can get it free ;) and only weigh 4g each.

https://farm5.staticflickr.com/4901/...89348ec0_c.jpg


https://farm5.staticflickr.com/4853/...e14d3bbe_c.jpg



Done for now

https://farm5.staticflickr.com/4895/...5bf9478c_c.jpg


https://farm5.staticflickr.com/4900/...b4e9c303_c.jpg


I have also designed a chassis that I'm waiting to get cut.


https://farm5.staticflickr.com/4867/...55dabc7e_c.jpg


Have some plans for UD/OD but that will have to wait 8)

skypyt 12-03-2018 05:39 PM

Re: Xkill's mini
 
nice project
good ideas those that you have,
keep setup of this rig alive and use it on the rocks ;)

Mxkid261 12-04-2018 08:15 AM

Re: Xkill's mini
 
Nice looking chassis. Me and a buddy are currently experimenting with building a chassis.

psupaulb 12-13-2018 01:15 PM

Re: Xkill's mini
 
Nice, job. Makes me want a 3D printer. Also seeing your build motivates me to get started on mine again.

That Novak Motor and ESC is really hard to come by. I searched for one for quite a while before I found one. Had to buy another whole MRC off Ebay to get the combo.

xkill 12-14-2018 07:26 AM

Re: Xkill's mini
 
Thanks.
The printer only makes sence if you are able to design your own parts.
If you can then it's a nice thing to have, for sure!

Yes, this combo, especially the motor, is a nice score!
If you got another rig then it's just spare parts! ;)

xkill 02-17-2019 08:37 AM

Re: Xkill's mini
 
Boy, this has snowballed!!

I already have some parts done, but I'll post them when I get back home and can take proper pictures at them.
The wheels and chassis are cut and mostly done.

I'm still working on the CAD project to iron out as many bugs as possible, and this is where it stands.

https://farm8.staticflickr.com/7922/...eb41e03d_c.jpg

https://farm8.staticflickr.com/7828/...86c131bf_c.jpg

papabash 02-19-2019 04:47 AM

Re: Xkill's mini
 
Interesting build with some nice ideas. Looking forward to more. "thumbsup"

Arcright 03-22-2019 06:40 AM

Re: Xkill's mini
 
Blimey another impressive build , I do wonder if this mass of modding had anything to do with the interest dropping off. I wouldn’t put my standard Mini Pro up against something this tuned and expect to get any where close so I wonder if other with standard rigs have been put off?

xkill 03-24-2019 05:59 AM

Re: Xkill's mini
 
I think it just depends on what keeps you motivated.
For me, I love the build and projecting part of the hobbie more than the driving (but still I love driving!).
My 2.2Pro and Sporty have chassis designed by myself.
The mini I had a vision of what I wanted to do and also I want to keep cost's down as much as possible. So far so good.
To go to a Comp what motivates me is to go out, do my best, but most of all have fun and chat with like minded people!
Results come second to all that.
Never be ashamed of any result as long as I had fun. And for sure I will come with ideas to improve my cars...

I think lack of parts is one of the reason mini died of, but with new ideas I think its making a come back.
Its a always evolving sport, like everything else.
I'm sure that even with a stock Rig you can still have fun, and that's what matters the most!
Come to Eurocrawl in Austria in September and hang out!
Clean the dust of those rigs ;)

Arcright 03-28-2019 02:12 PM

Re: Xkill's mini
 
Come to Eurocrawl in Austria in September and hang out!
Clean the dust of those rigs ;)[/QUOTE]




Nice idea but I doubt my other half will think that's a good idea LoL


I think you're right about the parts issue I get pretty twitchy when a wheel gets stuck in a hole between rocks as I've stripped a few gears by mistake this way .

xkill 04-07-2019 12:57 PM

Re: Xkill's mini
 
Time for an update!!

OD/UD on a mini is a big challenge...
Especially UD.
So I thought about using pinions and 3d printed parts to give me OD/UD.
I use 14t and 20t pinions, but it will be very easy to change if I need to.

Here are the pictures:

https://live.staticflickr.com/7824/4...46434ab5_c.jpg

https://live.staticflickr.com/7846/4...e403bcff_c.jpg

Just have to drill the pinions to 4mm.

https://live.staticflickr.com/7853/3...b6ee6300_c.jpg

And make a small shaft..

https://live.staticflickr.com/7904/4...8eceb0c5_c.jpg

And it looks like this.

https://live.staticflickr.com/7805/4...1d69c571_c.jpg

Also got a drag link mocked up and the top plate is angled.
The supports on the C-hubs adapters are there to improve overall rigidity.

https://live.staticflickr.com/7829/4...397d41fe_c.jpg

This top plate/servo mount/upperlink mount will be made out of G10

https://live.staticflickr.com/7877/4...9aefe0e6_c.jpg

For servo I will be using a Sanwa PSG-CL.
16Kg @ 7.4v and I will be using it directly to the 2s battery (no BEC).
I moved the tie rod and drag link to the bottom so I can increase castor angle.
Still have to work on the steering to get the maximum angle left and right.

https://live.staticflickr.com/7914/3...32ff2abc_c.jpg

The plate has to be re-designed (among other parts...) because the servo gives me more space than I was expecting.

https://live.staticflickr.com/7847/3...0dc95a79_c.jpg

On the rear I'm using cut SCX10 rear shafts

https://live.staticflickr.com/7877/3...42d14745_c.jpg

Top link mount has to be re-desinged but nothing special...

https://live.staticflickr.com/7863/3...77b6bda0_c.jpg

Chassis is done and I'm happy with it.

https://live.staticflickr.com/7874/4...ce8d2e4b_c.jpg

https://live.staticflickr.com/7910/4...60d65116_c.jpg

Shocks are 70mm cheap Chinese stuff...
But, to be fair they seem to work rather well!
Shocks springs are also a work in progress.

https://live.staticflickr.com/7908/4...7cd8818b_c.jpg

Wheels are also done...

https://live.staticflickr.com/7804/4...693e06ce_c.jpg

... and started looking at the foam setup....
I wanted the tires to be as tall as they could but the rover's are short to start with.
Found and old 2.2 rover foam, cut it in half and trimmed it (the inner hole is the same size on the 2.2 and 1.9 rover foams).
Combined with shaved sidewalls and cuts on the tire threads it seems to be OK, but I would prefer a bit softer setup...

https://live.staticflickr.com/7872/4...7f7641b0_c.jpg

https://live.staticflickr.com/7807/4...f522d842_c.jpg

https://live.staticflickr.com/7871/3...25ef2e30_c.jpg

https://live.staticflickr.com/7819/4...2856753a_c.jpg

Also made some bedlock for the wheels that works great.

https://live.staticflickr.com/7894/3...c76af81a_c.jpg

Made some links and this is how it looks:

https://live.staticflickr.com/7805/3...45d4491e_c.jpg

https://live.staticflickr.com/7909/4...cf9377f1_c.jpg

https://live.staticflickr.com/7887/4...f86e7e55_c.jpg

My printer crapped out on me so I couldn't print the new parts that I re-designed....
I also cut the driveshafts too short so I will be putting some SDI shafts since the original ones are so hard to find and expensive.
Hope to get the rig on the rocks soon but first have to solve the printer issue.

truespace 04-07-2019 01:15 PM

Re: Xkill's mini
 
Very clean work man !
servo plate looks pretty thin but perhaps it s strong enough... any chance to make the same in CF ?
btw, hope to see it run soon !
Congrats "thumbsup"

xkill 04-07-2019 01:19 PM

Re: Xkill's mini
 
This was printed just as a test piece so I can place the servo.
It will be done out of 1.5mm G10, I think it will be strong enough.

skypyt 04-07-2019 02:05 PM

Re: Xkill's mini
 
it's a very good work, the UD/OD ideia is great, hope it really works good.
love the chassis design it seems to be very clean and functional,
overall it will be run really good, i think

:)

Robs07junk 04-07-2019 02:11 PM

Re: Xkill's mini
 
Hell Of A Setup You Got Going There

Zarizi Tech 04-08-2019 05:24 AM

Re: Xkill's mini
 
Looks very cool and innovative man! Can't wait to see it in action. "thumbsup""thumbsup"


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