Brushless Engine's?

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:

Brushless Engine's?
Topic Started: Jan 11 2006, 12:33 PM (260 Views)
Xeno83	Jan 11 2006, 12:33 PM Post #1
Swayed by the Trax Posts: 16 Group: Member Member #34 Joined: December 30, 2005	Hi all, I am building a tank or at least its gonna use tracks (-: Then now my question is I am gonna buy an electric brushless motor butt I dont know what I shall use... I have found this engine look the URL: http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXHEW3&P=0 I gonna use 2 of these engines, 1 for each track side is it a good choice? My "tank" will weigh about 4-6kg (141-211.6 oz) and it need mutch power both for speed and for bashing. Plz help me out guys. I dont care so mutch what its gonna cost since I am gonna do this very serious (-: /Xeno



outcastrc	Jan 11 2006, 02:28 PM Post #2
Administrator Posts: 1,150 Group: Admin Member #1 Joined: December 13, 2005	Wow 270us just for a motor? Yikes. I think this would be a better option. Click here Its the same price but includes the esc for it. So you'd save a whole bunch of money... One of those throws around a emaxx (it was designed for a heavy RC vehicle) pretty good so 2 in a heavier tank should do well. The esc's have nice options, and safety features. The real problem lies in the fact that if you need more then those HVMaxxes for power your in a different bracket. A much more expensive one. Another nice thing about the HVMaxx is that they'll be easy to sell if you decide they aren't enough. So you'll recoop most of your money.



Xeno83	Jan 11 2006, 09:43 PM Post #3
Swayed by the Trax Posts: 16 Group: Member Member #34 Joined: December 30, 2005	Hm, I am gonna think about this one it seems nice to. But really do I need 2 ESC's I thought that I could use 1 esc for 2 engines dosnt that work? /Xeno



WhiteWolf McBride	Jan 11 2006, 10:30 PM Post #4
Making Trax! Posts: 196 Group: Moderator Member #15 Joined: December 15, 2005	Um guys... You're forgetting you have to drop this into a GEARBOX. Look at the Tamiya tanks - they are running about 60:1 ratios through about 5 gears, and using 6v torque motors. $540 a pop on ~just~ 2 motors and their ESC's? How much you gonna spend on the gearboxes, then the suspension, chassis, tracks... and then think about the body and turret? For $800 you can get a ~whole~ Leopard 2A6 from Tamiya... and thats with most of the electronic frills. If you're prototyping, use a ~cheap~ motor first... cause if you blow up $27 instead of $270 cause your engineering aint working, it won't hurt nearly as much. Ask some of the other Tank prototypers how much they've lost testing theories like using pittmann's and worm drives... WhiteWolf
	*WhiteWolf McBride* CEO, TaskForce Technologies Inc. Ottawa, Canada


Xeno83	Jan 12 2006, 03:45 AM Post #5
Swayed by the Trax Posts: 16 Group: Member Member #34 Joined: December 30, 2005	Hm yes I know its mutch money to spend but I dont wonna buy the vehicle. I wonna do it my self (-: Well and I am not gonna use turret and that stuff on my tracked vehicle. I am also gonna do evry thing on my own I mean the tracks and so. I am at this moment making my tracks with alloy parts, and the rest will mostly be in alloy since I work att an alloy cnc industri where I can make evry thing almost.. but yes a bad motor for just testing is a good tipp. I am gonna post pictures off my tracks when they are ready or then they have some lenght so I can show them. But if u have good tipps just throw them att me, always good with some more brains (-: /Xeno



outcastrc	Jan 12 2006, 04:02 AM Post #6
Administrator Posts: 1,150 Group: Admin Member #1 Joined: December 13, 2005	Now we are in a different realm! I have a design I never got very far with that was quite large. about 2 feet long. Based on a sherman design. I planned on using used wheelchair components. They can be gotten quite cheap. Are extremely powerful and run off 24 volts. I helped my father'n'law build a tank steer 4wd lawn mower using this system and I can tell you it can throw that around with ease. So I know it works, and works well. Maybe if your project is large enough this might be an option? When I get a chance I'll put up a thread about it. While it barely got started and I put it on hold for certain reasons. Its far from dead.



WhiteWolf McBride	Jan 12 2006, 05:31 AM Post #7
Making Trax! Posts: 196 Group: Moderator Member #15 Joined: December 15, 2005	A man with CNC machine access, is it, Xeno? Outcast, we have to talk this man into making cleats for a replacement Blizzard trackset! Yes, you heard me correctly. Think like the proper snowcat ones, a composite-fabric belt with cleats bolted/rivet'd to it. I had contemplated using recycled treadmill material, or perhaps something else, and even asked Kenny Kong about casting cleats for the tracks, but the cost came out as high as the Tamiya ones (about 180 a pop, even for 102 'cleats' per vehicle (vs 77-87 per Tamiya tank) Xeno, would you be interested, if we can get enough of our members interested in cleats? Here's the original reference page I found, oddly on a page you noted Outcast: http://www.pistenraupe.de/Modellbau.html PS: anyone speak German? I'm hoping one of the guys off that site can get us the measurements for the groomer assembly! I've asked Willy, but he's usually having his butt run off by his German bosses. WhiteWolf
	*WhiteWolf McBride* CEO, TaskForce Technologies Inc. Ottawa, Canada


Xeno83	Jan 12 2006, 08:11 AM Post #8
Swayed by the Trax Posts: 16 Group: Member Member #34 Joined: December 30, 2005	Hm WhiteWolf McBride do u mean the pinns or the things that is over the rubber? If so do u mean that if we can make those they are just gonna be bolted on, on the stock rubber tracks ? and is alloy a good material for it?, well it should be because its pretty small weight on it. well if some are intressted in this I need a/or some kind of drawplan on the looks on them. Then I can look what it should cost to make them. If its in demand or need for something else for the blizzard in alloy, just make a post about it and we can always look if we can make it. But its expensive to just make 1 item for 1 guy. Best price is if many need the thing/item. The company can allso elox the alloy in many colours, because they have a alloy elox company right behind my work. /Xeno



spoon37	Jan 12 2006, 11:18 AM Post #9
Trax Master Poster Posts: 602 Group: Admin Member #11 Joined: December 14, 2005	it depends how you want the Tank to run. dual motors driving each track through a gearbox is a simple way of doing it, however I dont think it will behave realistically(this may not be a problem tho). think about it, a real Tank has a huge Diesel engine which only turns over one way, to replicate the effect you would need one powerful electric motor and a complex gearbox to not only divide drive between two tracks, but also control the motion of going forwards, backwards and running each track independently to turn. this obviosuly complicates matters but it depends how important scale motion is to you. I have seen a diagram of how an actual tank gearbox works....I'll have to dig it out, I know it involved 3 sun gears.....beyond that I have no idea... :lol:



Xeno83	Jan 12 2006, 11:25 AM Post #10
Swayed by the Trax Posts: 16 Group: Member Member #34 Joined: December 30, 2005	Hm nice info, should be nice if u found the gearbox info to. My vehicle will not be a tank I wont it to be like rippsaw u can say actually. And I gonna use 2 motors I think its the best performance and also easier steering with it then. I gonna use alloy on almost all parts to so the weight will be about 6kg dont know in oz. But I am making the tracks right now need to have them before going further 1 stepp at a time. (-: /Xeno



dremelit	Jun 10 2006, 07:05 PM Post #11
Swayed by the Trax Posts: 19 Group: Member Member #89 Joined: June 10, 2006	To answer your other question, you'll need one ESC per motor. Brushless ESC's read the motor's position constantly during operation, so two motors cannot be combined on a single ESC. The HV-Maxx has a lot of power, but also spins very fast. Is this what you need it to do? Consider an "outrunner" style motor, used in electric aircraft. They spin very slowly (as little as 400 rpm/volt) and have an unbelievable amount of torque. I use a 2 ounce Axi outrunner in my 4-pound TLT rock crawler, and it's powerful enough to snap a 5mm pinion gear shaft.
	Dremelit is one of the few men I'm actually afraid of! His brain works at 4 times the speed of you or me, he actually tries to make his many ideas come to fruition, and has NO idea what an obstacle is: He has balls that clank, and one hand was lost in an accident, so he had a Dremel grafted on-It even has an attachment that lets him hold ANOTHER DREMEL! Whenever this guy is stimulated, take my advice & run for the hills!


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


« Previous Topic · General RC · Next Topic »