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07-30-2006, 12:15 PM
| #1 |
| Quarry Creeper Join Date: Feb 2006 Location: Glenrock
Posts: 277
|  CEN-based crawler build - "King Bling"
I decided to finally post some pics of my super project. The suspension is in development and I don't like how it is right now but I have an idea what to do to improve it. But the forced articulation 3-piece swivel chassis  and "cutting brake" concept might not work well together because of the required width and weight. I am pushing the scales to maybe 12 lbs with everything I have! After chassis lightening and suspension redesign I hope to shed a pound though. The drivetrain is stout hardened steel everywhere except the sliders which are 11/16" plastic - I hope they are the "fuse". I have done all the design and work myself but I had some help from a machinist friend on the axle housings. This project is more of an experiment than it is a comp crawler. It looks like a crazy cyborg or something when there is a translucent body on it!  Parts list: CEN Nemesis diffs (locked), sliders, turnbuckles, & axles with the stock 23mm hex's. CEN Matrix center diff (open) with truggy 64t spur & brake set-up modified for independent brake actuation. Revolver with 3.8:1 planetary & Mod1 pitch 11t pinion. Mamba 25 (may upgrade to Mamba Max or Monster). 2 Scorpion 2000 lipos. Hitec 5645mg digis for steering & 6985hb for brakes. Hitec Optic 6 radio. Revo shocks. HPI BMW 190mm body. I still need a voltage regulator of some sort - I am thinking about a Smart-Fly Power Expander to maintain torque to all servos and the motor at the same time. Alright, check it out!      Like I said, it's an experiment so don't be too harsh! |
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07-30-2006, 05:08 PM
| #2 |
| Rock Crawler Join Date: Sep 2004 Location: a place of settlement, activity, or residence.
Posts: 842
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That is definitely unusual, but very cool. What keeps the center section from pivoting?
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07-30-2006, 06:18 PM
| #3 | |
| Quarry Creeper Join Date: Feb 2006 Location: Glenrock
Posts: 277
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07-30-2006, 08:50 PM
| #4 |
| RCC Addict Join Date: Mar 2005 Location: Saginaw
Posts: 1,721
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That's one crazy setup, man. Definitely different.
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07-30-2006, 09:18 PM
| #5 |
| owner, Holmes Hobbies LLC   Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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Interesting man! I really like the design. What are you thinking of changing, ditching the cutting brakes? It would be easier to play with one design at a time for sure. How do you have the center diff setup? |
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07-31-2006, 10:59 AM
| #6 | |
| Quarry Creeper Join Date: Feb 2006 Location: Glenrock
Posts: 277
| Quote:
As for the diff setup... it's open and the stock grease is in there for now. I haven't been able to experiment with that too much but it is pretty smooth and tight as it sits! | |
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07-31-2006, 12:05 PM
| #7 |
| owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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If you are willing to give up the 645mg, run it at full lipo voltage. I know the berg receivers should take it with minimum glitching. On such a tiny rig I cant see it smoking unless you dont adjust your EPA's or something. Watch the heat on the case, and give the rig a rest if it gets too hot. I would still recommend the mpi regulator otherwise  They have worked very well for me, and the harness nightmare isnt too bad. You could always use the Power Expander in its place if you would prefer a single unit for all wiring.
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07-31-2006, 06:14 PM
| #8 |
| Pebble Pounder Join Date: Jul 2006 Location: Out of my mind!!
Posts: 139
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Yeah, thats the kind of rig im into  - one with gizmoiness! Your rig is very nice-looking. I like the machining on it. It looks great!
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07-31-2006, 08:08 PM
| #9 |
| Quarry Creeper Join Date: Feb 2006 Location: Glenrock
Posts: 277
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Thanks for the compliments and tips, fellars! There are some bugs and flaws to work out but I don't think it is too bad for such a complicated first build! Here are some pics of a dissected axle and the center section of the chassis.  That axle shaft is 8mm hardened steel with 23mm hex - SWEET!   I need a better camera! Damn! |
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08-01-2006, 11:46 AM
| #10 |
| Rock Crawler Join Date: Sep 2004 Location: Knoxville
Posts: 611
| DROOL
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09-27-2007, 08:32 AM
| #11 |
| Rock Crawler Join Date: Sep 2005 Location: IDK
Posts: 852
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Wow i just remember seeing this back in 2006, ANY UPDATES? how did the revolver work out for ya? |
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09-27-2007, 12:36 PM
| #12 |
| Rock Crawler Join Date: Mar 2007 Location: Colorado
Posts: 635
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it really looks incredible, never seen a design like that, I think i can understand how it works and its pretty clever, would love to see it in action with a good view of the artculation.. keep it up  |
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09-27-2007, 01:31 PM
| #13 |
| Quarry Creeper Join Date: Feb 2006 Location: Glenrock
Posts: 277
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WOW, you did some digging to find this one! I have a serious problem coming up with ideas and never finishing the projects that come from them. I still have all the parts for this rig stored together, but the Revolver was put into my K2-3S VehiCROSS scaler which is also incomplete. :-( The Revolver was herky jerky but I don't totally know what I am doing when it comes to electronics... What stopped this rig in it's tracks was when I tried to install the lockers - I cannot get the diffs apart cuz CEN used red locktite on the tiny screws that keep them together. I boiled it, used a torch on it, tried everything I could think of to no avail. I have to order new parts to get it locked and this monster was already way too expensive, so I moved on for now. My WK tuber is the rig I want to finish the most - another take on forced articulation. Thanks for the flashback! |
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