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-   -   Another Gmaxx is born (https://www.rc-monster.com/forum/showthread.php?t=5656)

mkrusedc 08.24.2007 09:41 PM

In cased you missed it in the other forum:
Sick build!!!

Slalom the poles with a wheelie bar!!

jnev 08.24.2007 11:07 PM

That thing is a wheelie monster! :) Looks great.

neweuser 08.24.2007 11:57 PM

I too like the low ride and wide wheels.....nice!

Serum 08.25.2007 02:36 AM

is that manyou?

suicideneil 08.25.2007 11:32 AM

Quote:

Originally Posted by Serum (Post 114677)
is that manyou?

Eh? You mean the music, it was Cascada: A Never ending dream.

The thing that made me really angry was the dopey woman (putting it mildly) who decided to park right in front of where I was driving; got half a field to park in, loads of empty spaces, but she decides to try and run over the truck & park right in my way. I was tempted to let down her tires, but too many witnesses.... Overall a fun day, the weather was great, but man are my legs aching from walking to & from the bash site.

suicideneil 08.26.2007 03:07 PM

Forgot to mention before, but I have some news about my capacitor mod. I decided to loose the 4 small 330uf caps in favour of another big Novak 2700uf jobby ( 2 in total, wired in parallel ). Did it make a difference? YES. Esc temps were no different than normal really, but the thing I did notice was that towards the end of the run the power was still delivered smoothly. By this I mean before I added the extra cap, in the last 3-5 minutes of a run the batteries would 'dump', and the caps would be be providing the power on & off whilst they 'emptied' , then recharged, then emptied again. Hard to desribe, but it sounded like I was trying to change gear ( motor revs up, then dies, then revs up again, then dies & so on ). Now however, theres none of this, and the truck just runs solidly until the last few minutes when the power starts to drop off, then in the last minute or so it really slows down & I call it a day for that set of batteries. Shame the Novak caps cost $10 and you cant get fewer than a bundle of 100 or so per auction on feebay of similar types, otherwise I would add another one or two just to experiment.

suicideneil 09.09.2007 08:22 PM

UPDATE:

http://i115.photobucket.com/albums/n...0photos/72.jpg

http://i115.photobucket.com/albums/n...0photos/73.jpg

http://i115.photobucket.com/albums/n...0photos/74.jpg

http://i115.photobucket.com/albums/n...0photos/75.jpg

http://i115.photobucket.com/albums/n...0photos/76.jpg

http://i115.photobucket.com/albums/n...0photos/77.jpg

http://i115.photobucket.com/albums/n...0photos/78.jpg

I'll let the pics speak for themselves. Hopefully within the next week or so I will be able do make a video of how it performs with 14cells instead of the usual 12.

suicideneil 09.23.2007 02:26 PM

I uploaded the vids to youtube so that I could reach a wider audience. There is also a new vid of the truck using 14cells; not as impressive as I was hoping.

<object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/sb5oN8OImRE"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/sb5oN8OImRE" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"></embed></object>
older vid

<object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/KxicmxHn2Do"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/KxicmxHn2Do" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"></embed></object>
New vid

I did remember to bring my temp gun this time (aka hacked meat temperature probe, oh man....), the results after 10 minutes of hard running are as follows:

ESC= cold, seriously. Wasnt worth checking it was so cool ~ ambient temp 20*c / 70f ish.
Batteries= hot! ~ 70*c / 160f ish
Motor very warm = 60*c / 140f ish

Normally I would say that the motor was under geared, thats why the esc is so cool yet the motor hot. Thing about the HV motors is that they dont always follow that rule of thumb, so I think I need a few more pinions (18 & 19tooth) to have a play with, and try gearing up a little. I will figure it out though- I know this system is capable of much more; it went faster in the TXT-1 and that was with the old bonded rotor and 12 cells.....

ClodMaxx 09.23.2007 02:32 PM

wow - that thing really flies! those tires sure do make that thing look beastly.

nice! :yes:

RCShocker 09.23.2007 10:32 PM

That brick might float !!!

Huge focal point of the truck too.

I like'm like that :wink:


Good Lookin Whip you got there for sure. :intello:

mkrusedc 09.23.2007 11:04 PM

Very nice!!!!!!!!

That is how I like my 1:1 low and wide.

suicideneil 09.25.2007 04:40 PM

Quote:

Code: RW3200-11 RW 32 DP Pinion 11 teeth 1 @ 2.95 = 2.95
Code: RW3200-18 RW 32 DP Pinion 18 teeth 1 @ 2.95 = 2.95
Code: RW3200-19 RW 32 DP Pinion 19 teeth 1 @ 2.95 = 2.95
Code: 4470 Traxxas Spur Gear 70T 1 @ 2.29 = 2.29
Shipping: £ 2.00
Total: £ 13.14
Time for some experimenting, I want to get this gear ratio nailed. I also locked the tranny into second gear & removed the 1st gear RCM idler- suprizingly heavy for such a small part. If I really wanted to I could just order the single speed cover plate since I have the coupler & a million spare screws, but.... bah. Had an interesting thought too; if I decide the HvMaxx is no-longer enough power/speed and get the new Novak system or something else, could I use the HvMaxx in a BL boat- dont see any reason why not?

luisranza 09.27.2007 09:53 PM

HEY thats nice do u have a top speed on it.

suicideneil 09.28.2007 11:40 AM

Quote:

Originally Posted by luisranza (Post 120295)
HEY thats nice do u have a top speed on it.

Thanks. I dont have an official topspeed yet- everytime I try to buy a GPS unit on feebay I get out bid by a huge amount, but I estimate the top speed at about 30-35mph roughly.

At the moment I have ripped two of my 7 cell packs apart into individual cells, and im just about to order a soldering jig & battery bars etc so I can make them into side by side packs which fit the Gmaxx chassis much better.
I did a little test this morning and managed to get some solder to stick properly to a old spare cell, so I am confident I can do this properly & not ruin 2 perfectly good but cheap battery packs.:yipi:

luisranza 09.28.2007 11:49 AM

Have u tried lipo yet? When my g3r revo chassis comes in I am going to set up for drag racing I think I will use the Novak HV 6.5 with lipo.


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