My Brushless baja 5B is finish!!!
 

Hallo boys yesterday I tried the baja 5b with the neu 2215, I have to say that the
machine now is perfect, 85KMH,and after 20 minutes of the game
engine was 50C degrees and the esc was 55c °, this is the video :)
http://www.youtube.com/watch?v=L73aNJ-wlIk

Nice. Any naked shots?

The only shot i have
http://picasaweb.google.com/ettoreso...510SLipo85KMH#

Nice Job, looks ESC is MGM, what's type? where did you get it?

Looks like a 12545, you can order them right from their website but it'd be cheaper to get one through Mike.

yes is a MGM, i take it from Mike few months ago...

Very nice. Do you know anyone with a gas Baja 5B? It would be awesome to see how they both would do against each other.

i know my friend had the baja petrol ... but I feel afraid to try:)

Very nice....I can only imagine how much all of the electronics cost.

I found the problem...
My bja take only the 80kmh because my lipo go under 35 volts under load...
To reach a 90 kmh i need a new set of 35C lipo :)

Very nice. It really gets moving at the end when the lipos warm up a bit.

Hallo boy, today i run my baja with eagletree system sensor...
This is the resyults
Temp ambient 37 C°
Temp motor 51 C°
Temp esc 53 C°
Temp batt 49 C°
Top speed 85 KMH
Top RPM 24.834
Runtime 20 minute

Now i am very happy of this setup
http://picasaweb.google.com/ettoreso...78058537291522

First of congratulation on this nice build. Thanks for sharing the Eagletree graph. Seems as if the car needs around 45A @ 36V to maintain top speed (1600W). Hard to tell without zooming in further into the graph.

Could you attach the eagletree data file "baja221510slast.FDR" i would like to get a better idea what exactly happens from an electric point of view when moving a 1:5 vehicle.

Around 540W average is less than i would have expected, but this is mostly related to the driving style. 110A (3800W) peak is not that high but seems to be due to the grip limit of the rear tires (Batteries may also be the limit). I guess you were still running your "older" lipos (older generation PQ5000 with 25C) as voltage drops to min 32,91V.

Did you already drove it offroad? Might not be that easy to find a good offroad bashing spot in a big city like rome ;-)

Yes othello this is the file :)

Yes Othello, in Rome is difficult to find a track, but i see a nice place to make an off-road session...in the next week :)
I need to make a filter on the 2215 to prevent the fan suck a debris
yes my lipo is older polyquest 5000 25c
i want to buy a 35C

Nice Virusss
Could you give us some more details on:
the motor mount
clutch you are using
brake setup, mech, or are you using the motor to break
total weight of the car

Motor mount is made by Serum :) Super nice work
I use the brake stock system (mechanical), with the motor brake the esc make too hot, stop a 11 kg of car is difficult for esc.
i don't use a clutch the pinion is connected directly to the motor shaft

Very interesting browsing your eagletree file. I made a quick sum up graph while zooming into 1 minute of your run (mostly speed runs):

http://www.braintrust.at/2007/ds/rc/neu221510slast.gif

Virusss, do you know your overall gearing? Which pinion size do you run? Judging from rpm and voltage level i suppose you run a Neu 2215 2.5Y (600kv), is this correct?

With 5000mAh and a more constant / agressive power use (especially when running higher output batteries) i would expect runtimes to drop below 10 minutes (more then 500mAh per minute) and an average power of 1KW. You might want to get higher capacity batteries.

Wow Othello, very nice explain my eagle tree file...
yes the neu is 2215 600 kv
the gearing is 17/57 (stock)
my runtime approx 18 minute if i remember correct
i like to try 35c hyperion, and i like to try in offroad

p.s.
i like so much your video with eagletree file in overlay...how did you make?

I am using a hyperion G3 3s 2200mAh vz 35C lipo and it performs great in a 1:16 buggy. Built quality seems top. Recharging with 10A (max 5c) takes about 20 minutes. Capacity although is only 2050mAh and not 2200mAh.

I posted some guidelines on how to insert eagletree data into a video about one year ago.

This is my latest video with eagletree inserts featuring my custom 4wd Baja based on 2 1:8 truggy chassis.

very nice guide for video editing :)
next week i try the baja off-road and i make a vid

Hallo boys, i have a problem...
I must protect my 2215 from dust, but I do not know how close the fan that sucks air ...
I had thought of putting a filter but I do not know what
Any ideas??

You might want to try something like this

http://sites.google.com/site/planbpa...Luftfilter.jpg

Stockings/nylons from your girlfriend/mam should do.

And if you want to protect your front bearing from wet cut a round piece of felt, grease it, drill a smal hole trough it and glue/attach it on the front shield right in front of the bearing.

yes othello, i like the collant system :) but in the rear side?

The baja in off road
http://www.youtube.com/watch?v=XmfC6aVQfmc

and this is the savage converted to baja, of my friend Gyn77
http://www.youtube.com/watch?v=VpGcThkc1d8

Is it me or does those Bajas move faster then the gas version.

The first one was absolutely silent. But I would like some more details on the second one.

OMG that is sick....okay I have new focus. :yes:

Top speed of his with the same gearing as stock will be a fair bit faster because of the RPMs, but that acceleration is where it's at. The stock tires suck, particularly in grass, but with a gas Baja it's actually somewhat controllable with any significant amount of throttle. That 2215 has plenty of power on tap to do some custom greenskeeping!

Here the thread of my homemade Baja from a Savage

http://www.rc-monster.com/forum/showthread.php?t=23285