Wow, but not good...... - RC-Monster Forums

nitrostarter · **Wow, but not good...... -** 02.26.2006, 10:15 AM

Ok so I'm running my Maxx, towards the end of my run it flips over and some how breaks my fan on my controller. So I save it and try to fix my fan but I cant so I take the fan off. Today I run it without the fan today and WOW. Towards the end off the run I guess it started thernalling. But the oddest thing happened when it did. I was doing speed runs up and down my street. I was making a pass and all of a sudden it was like a 200 shot of nitrous. I'm rolling at 33ish mph and when it kicked in it flipped over and slid on its shell. I think I finally saw what 40+ mph is. And then it thermalled. It came back and ran 33ish and then hit the nitrous again for a second or 2 and when I stopped it thermalled, I knew something was wrong. I got it and temp gunned everything. I think I need to drop down to 16.51 for sure. ESC was at 200. I almost cried.

Needless to say I'm running 18/51 and its doing this so I think I need to drop down. Also, why would it boost up in power like that before it thermals? I want this speed all the time. I think my ESC is in a boat program because its only Forward and Reverse, no brakes. Would this affect the overall power output? I dont know much about controllers so I'm asking. I guess I'm going to have to get that programmer now.

Any input or suggestions, feel free to compliment.....

maxxdude1234 · 11:06 AM

Sounds odd. What controller are you running? 18/51 is quite a high gearing and will need a high turn motor and powerful controller to handle it. Perhaps that sudden power boost is a result of the very high temps - 200F is extremely hot for a controller, your lucky it didn't blow up!

squeeforever · 02.26.2006, 11:29 AM

yea, go for the the 16. i run 20/51 with a 10XL on 16 cells. for a 7XL, 18 is way to high.

nitrostarter · 02.26.2006, 12:15 PM

I run the micro 18120. I know this sucker was hot, the shrink wrap shrank some more.:005: When I had the fan on it, it ran 130-140. W/o it spiked to 200.

I dont know but It just doesnt seem like its going as fast as it should. Radared at 33mph with the 18. I might just go ahead and buy another controller and see, or the programming link.

Are you guys sure there's no way to change programs without the link? Or doesn anyone have it and would like to do it for me? :007:

I put the 16 on there to try out, I'll report back with my findings.

Gustav · 02.26.2006, 12:23 PM

How many cells are you running?

Seems like you may not be getting full throttle,this boost could be a glitch giving you full throttle for a change.

squeeforever · 02.26.2006, 12:37 PM

yea, check your radio and see if its got 100% epa. also, try and reprogram the controller. your might have not held the throttle all the way down when you programmed it.

nitrostarter · 02.26.2006, 01:01 PM

I made sure I squeezed the trigger tight when I programmed it but I didnt worry about the EPA. I think I need to check that out.

coolhandcountry · 02.26.2006, 01:05 PM

The sudden burst don't sound like it is running like it should. When I started using a ubec it seemed as if my truck had more power and ran faster as well. your timing could be off or it could be on the wrong parameters.

Gustav · 02.26.2006, 01:10 PM

How many cells? and std or ue diffs?then we'll be able to say what speed it should be hitting on good cells.

Seems like the reason for the high temps may be that it's overgeared to compensate for only getting partial throttle.eg 7xl,14 cells,3.3:1 diffs on 18/51 is around 38mph.(44mph on stock diffs)

nitrostarter · 02.26.2006, 01:17 PM

16 cells, UE diffs, 16/51 now, 40 series Road Rage.

I use a Rx pack also.

I don't know, its just pretty depressing to see all 4 tires(standard bowties) balloon like saw blades only 1 time when I'm about to thermal.....

Gustav · 02.26.2006, 01:27 PM

Do you have the BK programming cable? maybe the timing could cause this?

I'd reprogram the controller with the epa 100% and the trims at 0.

seems a few mph short at 33mph(was that on 18/51?) but could just be voltage drop of the cells.

nitrostarter · 02.26.2006, 03:04 PM

:005: :005: :005:

I can't keep it in :020: . I just tried the 16/51 16cells, and I like the squirrelly driving caused by the excessive ballooning of standard size Bowties. Fellas, this is how its supposed to be(i think). She rolls like a batt out of hell and temps are down. I reprogrammed it and put the 16T on. I'm ready to radar it now. Going half throttle and nailing it will send her sliding on the body.

maxxdude1234 · 02.26.2006, 03:06 PM

Good to hear nitro....:)

02.26.2006, 04:34 PM

its good to hear that the temps are down and that it is running better

nitrostarter · 02.26.2006, 04:38 PM

Yep but I might have another problem. When I ran it, the runtime seemed really low, like 5-7 minutes. When I drove it close to me, I can here a sizzling type noise, or like air was being released, I didnt know what it was. Took my batts off to go charge them earlier and there's what looks like battery acid on 1 of the cells and now Im having trouble charging it, looks like the cell might have died maybe?