My BL Revo project

that is the funniest looking truck i have ever seen

[BrianG]

Quick question: The rc-monster site says the BK Wanderers require 5.5mm connectors, but the bk-electronics site says it takes 3.5mm connectors. Which is correct?

EDIT:
Something else; I was reading the warrior programming PDF at the bk-electronics site (http://www.bk-electronics.com/man_warrior_eng.pdf) and found this

Since the EMK brake does redirect braking energy into the batteries it is possible to produce voltage spikes much too high if using a power adapter. This will destroy controller, power adapter or both.

By "power adaptor", do they mean a BEC? Has anyone found this to be an issue?

[squeeforever]

im not sure what they mean by power adapter but all the wanderers use 5.5mm connectors that are pre-soldered on them.

[BrianG]

Originally Posted by squeeforever

im not sure what they mean by power adapter but all the wanderers use 5.5mm connectors that are pre-soldered on them.

Thanks squee.

Well, if the EMF braking feature does cause voltage spikes into the batteries (and therefore into the BEC), I suppose you could use something like a 36v Zener diode (at least 5w) to clamp the voltage. That should keep the spikes within a BEC's safe input range.

Has anyone had "issues" with their BEC during or after heavy braking? Something like unexplained radio signal loss for a few seconds, glitching, or other odd anomalies?

[BrianG]

Well, it's getting closer! I see the Mike got some Wanderers in! I still have to wait while my slipper is still on backorder and am having Mike re-make some CVDs since the ones I got were the wrong size (my fault). I can hardly wait until it's done! Anyway, I got bored, so I worked on a couple of things:



I was using a simple piece of thin aluminum as a bracket, but found it was "bouncy". Also, I've heard some horror stories about people's ESCs burning up. So I made another holder with sides and it is mounted much better - no bouncing. As you can see, I used foam padding extensively to help cushion it on all sides and to keep it electrically insulated from the aluminum bracket. It's pretty tight in there, so a zip tie should make it quite solid. Also notice the use of more foam around where the battery wires go through the Maxx motor mount hole to protect the wires from chafing against the metal.



I got a Spektrum DX3 and found it uses a really small receiver, so I made a new home for it. :) It's just a RadioShack project box, but fits everything quite well. I added a power switch and power indicator LED on the side so I don't accidentally leave the power on. The LED (powered from the unused channel 3 slot) only draws 10mA, so it shouldn't effect runtime at all.

Then, I was thinking of making a wheelie bar, but am not sure if my heavy 25 pound setup (8XL / 20120 / 14 GP cells) will even be able to wheelie. Then, I was looking at this and was wondering if anyone else used it and how well it works. It's not a bad price. I like it since it mounts to the bottom of the skid plate; others I've seen mount it to the bumper mount, which I don't like.

Whadd'ya think?

[maxxdude1234]

Looks good, nice work! You sure that weighs 25 pounds? Thats a very very heavy truck if so.

[coolhandcountry]

I like that little box you got. I like to put my receiver in a box to keep the dirt and dust off it. The wheelie bar is nice. I would say 11lbs just a wild random guess. That is cool and nice truck. that esc holder you made is really cool. I run the ubec with the bk and have had no problems with it. I think they are refering to a voltage device between batteries and esc. Something the changes the voltage in larger means.

[BrianG]

Originally Posted by maxxdude1234

Looks good, nice work! You sure that weighs 25 pounds? Thats a very very heavy truck if so.

Did I forget to mention that it is that heavy because everything has been re-done in stainless steel? :dft012: Seriously, 25 was a typo; I meant about 15 pounds.

Oh, and thanks coolhand! :)

[coolhandcountry]

15lbs i hope the diffs survive. That is kind of heavy.

[Gustav]

Are you sure it weighs that much,my BL LST weighs less than that with 12 heavy Ti plates making up the chassis,giant shocks,Ti arms(also heavy),alu beadlocks,8s lipo and a 1950 etc it's an absolute tank.

[BrianG]

Well, I'm not really sure, but it is noticeably heavier than my Nitro Revo even with a full tank of fuel. And that is around 10-11 pounds. Yeah, I'm kinda worried about the diffs as well, but is there something better that will fit?? I saw these a while back and figured they may be a nice combo to use with this and this. Add all those prices up and it makes for an expensive set of diffs though!

[Gustav]

The Nova RC diff cups are better (they're 7075) and they're only $20 each,we should ask mike if he can stock these.the cups and cases should add alot of strength.I wouldn't bother with the hardened gears,i wouldn't buy anything from hotracing anyway,their diff cups are a joke.

Are they Big joes?if you're running big heavy tyres the best way to save some strain would be some smaller,lighter tyres,like crimefighters.Maxxmashers are good allrounders and not too heavy.

[BrianG]

Originally Posted by Gustav

The Nova RC diff cups are better (they're 7075) and they're only $20 each,we should ask mike if he can stock these.the cups and cases should add alot of strength.I wouldn't bother with the hardened gears,i wouldn't buy anything from hotracing anyway,their diff cups are a joke.

Are they Big joes?if you're running big heavy tyres the best way to save some strain would be some smaller,lighter tyres,like crimefighters.Maxxmashers are good allrounders and not too heavy.

No, nothing big, they're just normal Maxx size tires by Imex. They're the ones on this page, top left one. The rims are RPM "clawz" found here. Not the best combo maybe, but they worked fine on my Nitro Revo.

So, is hotracing.com bad in general, or just their cups? They seem to have quite a selection of parts. At any rate, do you think that the cups and diff cases that Mike has are OK? They have to be better than the stock ones, if a bit expensive.

[Gustav]

Yeah the diff cups and cases Mike has are good,the FLM cups are good quality and 6061 alloy,the Novas are 7075 though(harder alloy) and are only $20.

Hotracing is a bit like GPM,zillions of parts but not much reputation for quality.It's mainly the diff cups i was referreing to,the alloy ones that some of us tried for the LST were a very soft cheap alloy,the bevel shafts ate right into them,most use the Nova cups now,they hold up well and shrug off bevel gear failures without a scratch.I've been using maximisers but the Novas are a bargain alternative.

[BrianG]

OK, thanks. I might PM Mike to see if he can get those Novas.