Cool But Not Perfect, Yet

Welcome to Making Trax. We hope you enjoy your visit.

You're currently viewing our forum as a guest. This means you are limited to certain areas of the board and there are some features you can't use. If you join our community, you'll be able to access member-only sections, and use many member-only features such as customizing your profile, sending personal messages, and voting in polls. Registration is simple, fast, and completely free.

Join our community!

If you're already a member please log in to your account to access all of our features:

Pages:
1
2
3
4
5

Cool But Not Perfect, Yet; fixing the engineering flaws
Topic Started: Dec 22 2007, 02:29 PM (4,143 Views)
alaskadf300	Jan 13 2008, 09:38 PM Post #26
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	The second is a cover that seals the main hull from the rear axle and lock bolts. I ground a flat side on the nuts, so it can be set from the outside. I have to silicone this in place tonight.
	"Rule #1, Never Run It where People Walk Dogs!"


alaskadf300	Jan 13 2008, 09:47 PM Post #27
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	And finally, the brakes. This really turned out better than I thought it would. Formica seems like an ideal brake material, only time will tell. Since it is so rigid, I could slip them on without any glue, and if you look close you will see tiny springs between them. These springs are cut from out of a ballpoint pen (I got the idea of pensprings from Outcast) and once you release them they snap back away from the rotor and re-center the lever-arms. After I took the pic I realized that they were crooked, so now the nuts are even.
	"Rule #1, Never Run It where People Walk Dogs!"


outcastrc	Jan 13 2008, 10:56 PM Post #28
Administrator Posts: 1,150 Group: Admin Member #1 Joined: December 13, 2005	Looks awesome!!! Can't wait to see whats next!



alaskadf300	Jan 13 2008, 11:40 PM Post #29
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	Thank you, I am still wondering about the gearing situation though. If I hook the motor up direct to the pinion, I'm afraid it'll be a hardpack-only machine. Also, does anyone make a centrifugally actuated two or three speed trans?. I want good speed, but not a lot of "really cool paperweights".
	"Rule #1, Never Run It where People Walk Dogs!"


outcastrc	Jan 15 2008, 09:08 AM Post #30
Administrator Posts: 1,150 Group: Admin Member #1 Joined: December 13, 2005	Well most nitro vehicles use a clutching 2 /3 speeds. BUT they require plenty of RPM to engage and stay engaged. The only electric versions I know of that work is running large BL power thru the nitro tranny... There have been attempts to make a normal electric 2 speed but they arn't very strong. For normal electrics an Traxxas Emaxx tranny would be a good choice, or possibly a Tamiya bigrig 3 speed... Both options would give you shifting on the fly...



alaskadf300	Jan 15 2008, 07:05 PM Post #31
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	Thanks for the info, I have also been considering a reduction of one or two teeth on the drive sprocket or a just that rc4wd 2to1 reduction unit.
	"Rule #1, Never Run It where People Walk Dogs!"


newracer	Jan 16 2008, 10:14 AM Post #32
Swayed by the Trax Posts: 4 Group: Member Member #701 Joined: January 15, 2008	Nice modifications!!! I just ordered my DF-300 and will be watching this thread closely.



alaskadf300	Jan 16 2008, 11:02 PM Post #33
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	Thanks, I'm starting to think that eagerness to run in the snow may put some of my changes on hold(for now). If I just get a 34T pinion and 73T spur for now, I think I can get it running by this weekend or next. Also, I can't see messing about with a chain tensioner for just the one winter that it will have drive chains. I moved the steering servo further to the back actually and I'm putting the RX in the very front. The battery should end up in the middle in a lengthwise position. Hopefully the ESC can sit flat on the belly pan far enough away from the battery.
	"Rule #1, Never Run It where People Walk Dogs!"


AST	Jan 17 2008, 06:47 PM Post #34
Swayed by the Trax Posts: 12 Group: Member Member #268 Joined: May 27, 2007	please keep us posted. i am checking your post almost everyday. once you successed in your project, you should start selling the chassis LOL. i hate the stock chassis either and end up using a piece of plastic to seal the big hole in the middle.



alaskadf300	Jan 17 2008, 07:22 PM Post #35
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	Manufacturing all-aluminum RC snow cats has crossed my mind, but it would be a long waiting time as I've been doing this with only a hacksaw, a hand-drill, a hole-punch, two wood-clamps, three small files and a jewelry saw. If I had a full shop, I'd do it, just to fill a much needed RC niche. Just yesterday, I started working out plans for a larger version powered by an 80cc 2-stroke 6-speed, we'll see what happens winter after next.
	"Rule #1, Never Run It where People Walk Dogs!"


alaskadf300	Jan 18 2008, 07:47 PM Post #36
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	Ok, I just picked up a 33T pinion and a 70T spur in 48P. Hopefully this will work well with the 19 turn orion V2 that I have. The stock gearing with a 17T/86T comes out to 25.5:1, which seems low to me. I need to re-calculate and see what it will be now, since direct drive would have been 5.045:1 final drive.
	"Rule #1, Never Run It where People Walk Dogs!"


alaskadf300	Jan 18 2008, 08:12 PM Post #37
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	If the diff and the chains can be counted as the "transmission ratio", I get 5.045 for that, and the "tire diameter" is 32mm. With a 33T/70T it comes out to a final drive of 10.7:1, is that right?. Any help is greatly appreciated.
	"Rule #1, Never Run It where People Walk Dogs!"


alaskadf300	Jan 20 2008, 11:57 PM Post #38
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	I am still working out where everything will go inside, but here are a couple pics anyway. You can see the aluminum "axle locator bar" that was needed, as well as the springs that give greater suspension articulation.
	"Rule #1, Never Run It where People Walk Dogs!"


outcastrc	Jan 21 2008, 12:51 AM Post #39
Administrator Posts: 1,150 Group: Admin Member #1 Joined: December 13, 2005	Looking awesome!



kenchoco	Jan 22 2008, 09:24 PM Post #40
Worthy of the Trax! Posts: 95 Group: Member Member #31 Joined: December 28, 2005	sweet!!!!



alaskadf300	Jan 22 2008, 11:41 PM Post #41
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	Thanks guys, even the most frustrating moments during this have been made tolerable by all the support. I just tried to break-in my 19T motor with the 3v no-load method, but it just hummed and would'nt spin. I gave up and spun it with an electric drill for a few minutes instead. So what do any of you think about the 10.70:1 gearing with a 19T Orion V2?.
	"Rule #1, Never Run It where People Walk Dogs!"


jimbiss	Jan 23 2008, 09:20 AM Post #42
Worthy of the Trax! Posts: 39 Group: Member Member #668 Joined: January 1, 2008	alaskadf300 Jan 22 2008, 11:41 PM So what do any of you think about the 10.70:1 gearing with a 19T Orion V2?. I seems a little high to me, but maybe it will move it ok. I am still around 17:1 gearing with my brushless motor. And I know it has tons of torque still. I'm sure I could gear it even faster. I just haven't had much time to play with it yet since I go the new motor.



alaskadf300	Jan 23 2008, 09:56 AM Post #43
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	Thanks, I hope to find out very soon. After seeing your video, I'm sort of wishing that something might overheat, giving me an excuse to go brushless now, rather than later.
	"Rule #1, Never Run It where People Walk Dogs!"


jimbiss	Jan 23 2008, 11:21 AM Post #44
Worthy of the Trax! Posts: 39 Group: Member Member #668 Joined: January 1, 2008	Well I hoping to be able to get some better video this weekend. And also trying to step up to some bigger pinions also. I will post on here and let everybody know how it goes.



alaskadf300	Jan 23 2008, 07:21 PM Post #45
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	Since I see you are a photographer, I look forward to it with the greatest anticipation.
	"Rule #1, Never Run It where People Walk Dogs!"


kenchoco	Jan 25 2008, 06:17 AM Post #46
Worthy of the Trax! Posts: 95 Group: Member Member #31 Joined: December 28, 2005	looks very good...we need snow pics!!



alaskadf300	Jan 26 2008, 07:43 PM Post #47
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	Thanks, I'm frantically working to finish the "snow-frame" that will seal out the wet stuff and after that, it's all just soldering and component installation. Once it seems to be adjusted correctly, I'll slap a lunchbox body on and shoot some vids!.
	"Rule #1, Never Run It where People Walk Dogs!"


zenmasterzoso	Jan 26 2008, 09:11 PM Post #48
Worthy of the Trax! Posts: 38 Group: Member Member #608 Joined: December 7, 2007	Well the the ESC I think fried from overheating in a ballon :rolleyes: Just waiting for it to cool down and test, when it smells like burnt popcorn i think its PoocheD . All in a days fun



alaskadf300	Jan 28 2008, 11:44 PM Post #49
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	That is not good, I hope you got it fixed. Well, I was waiting on some more sheet aluminum to finish sealing up my chassis and it's here. I'm hoping to get this thing done asap, as I type this it's snowing again.........
	"Rule #1, Never Run It where People Walk Dogs!"


alaskadf300	Jan 29 2008, 08:00 PM Post #50
Making Trax! Posts: 117 Group: Member Member #581 Joined: November 27, 2007	Forget brush replacement, comm-cutting and wondering if I'll have enough torque/speed without overheating!,...My new Mamba-Maxx 4600 will be here by Friday. This project seemed worthy of such a system, and after seeing Jim's video, I was totally sold.
	"Rule #1, Never Run It where People Walk Dogs!"


1 user reading this topic (1 Guest and 0 Anonymous)


Go to Next Page
« Previous Topic · Blizzard EV / DF-300 EP · Next Topic »

Pages:
1
2
3
4
5