 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
| HomeDiscussion Groups General ModelsRailroadsRocketsRadio Controlled Air ModelsHelicoptersLand ModelsWater ModelsModelGeeks.com Contact UsLink To UsSearch & Site Map |
Model Forum / Radio Controlled / Land Models / February 2005Electric Car really stumbles at take off.....
Friend has a electric stampede with a Reedy 10T and a Novak super rooster ESC. Upon take off car stumbles and stalls, but after that it really scoots. We have checked the wires, etc. Everything looks good. Battery isn't the greatest- Epic 3000mah nimh. I told him that motor is too much for the truck. Is the problem possibly not enough current? Maybe a 8cell battery is needed? Thanks > Friend has a electric stampede with a Reedy 10T and a Novak super > rooster ESC. Upon take off car stumbles and stalls, but after that it [quoted text clipped - 3 lines] > I told him that motor is too much for the truck. Is the problem > possibly not enough current? Maybe a 8cell battery is needed? Thanks Overgeared, or the capacitors are not on there right. Shoot. Didn't check the gearing. Should have a 8t gear correct? "Justin Mahn" <gabril@cox.net> schrieb: > > Friend has a electric stampede with a Reedy 10T and a Novak super > > rooster ESC. Upon take off car stumbles and stalls, but after that it [quoted text clipped - 5 lines] > > > Overgeared, or the capacitors are not on there right. Or ESC has an overload-Protect-circuit which kicks in at start-Torque... Michael. Not sure. The super rooster is a pretty heavy duty esc with no motor limit and can run two motors. I'd say it's not getting enough juice. Try another higher dump battery pack. > Not sure. The super rooster is a pretty heavy duty esc with no motor > limit and can run two motors. > Friend has a electric stampede with a Reedy 10T and a Novak super > rooster ESC. Upon take off car stumbles and stalls, but after that it [quoted text clipped - 3 lines] > I told him that motor is too much for the truck. Is the problem > possibly not enough current? Maybe a 8cell battery is needed? Thanks Shot winding on the motor? If so you should find that the truck sometimes won't start unless you give it a push and the motor will also have a reduction in overall performance. I wouldn't try another battery, put a 27 turn or 19 turn stock in first whatever you have to hand just to verify their is no radio interference between the speedo/motor and rx combination. I once had a strange thing happen with an LRP speedo that stuttered until I put BOTH extra capacitors AND a schottky diode across the motor. Chris The first thing I would check is the gearing, and start going down a couple of teeth on the pinion. > Friend has a electric stampede with a Reedy 10T and a Novak super > rooster ESC. Upon take off car stumbles and stalls, but after that it [quoted text clipped - 3 lines] > I told him that motor is too much for the truck. Is the problem > possibly not enough current? Maybe a 8cell battery is needed? Thanks Change the brushes and cut the comm? > The first thing I would check is the gearing, and start going down a couple > of teeth on the pinion. [quoted text clipped - 6 lines] > > I told him that motor is too much for the truck. Is the problem > > possibly not enough current? Maybe a 8cell battery is needed? Thanks Sounds to me like the brushes are sticking. Clean the com and change the brushes. I would also suggest heavily if he is using standard Tamiya (molex) style plugs to go to Deans Ultra Plugs. I have a Super Rooster with a 10T in an Evader with stock gearing and never had a problem. I also use Epic 3000s. > Friend has a electric stampede with a Reedy 10T and a Novak super > rooster ESC. Upon take off car stumbles and stalls, but after that it [quoted text clipped - 3 lines] > I told him that motor is too much for the truck. Is the problem > possibly not enough current? Maybe a 8cell battery is needed? Thanks Thanks. The motor is new. Only had two 5 minute runs on it. I will tell him about the deans plugs. Oh yeah a good point about switching to the Deans plugs, I forgot that. I guess for that matter switching to good quality wire itself would be a good thing too - Deans 12 gauge or Trinity 14 gauge is good. One point about the Deans is that after experience I would not be tempted to save a few bucks by using the Venom brand Deans clones. Electrically I think they are fine, and they are totally compatible with Deans, but on the downside they are hard to solder because the plastic seems really soft, and if you leave the iron on for a *fraction* too long the plastic just melts. This can happen with the Deans too of course but they seem a bit more forgiving. If you decide to swap to Deans I think it helps to plug the M and F together (but with a decent gap between the plastic parts, definitely not touching so they don't melt together) with a couple of alligator clips attached to the "vacant" ends to act as heat sinks to help prevent the plastic melting. Once you've done a few and your soldering is good (maybe it is already) you don't need to worry about this. MIKE > Sounds to me like the brushes are sticking. Clean the com and change the > brushes. [quoted text clipped - 11 lines] > > I told him that motor is too much for the truck. Is the problem > > possibly not enough current? Maybe a 8cell battery is needed? Thanks > Friend has a electric stampede with a Reedy 10T and a Novak super > rooster ESC. Upon take off car stumbles and stalls, but after that it An electric motor can't stall > are you outa of your mind <g> -- motors (possibly bushings) bearings are dirty or corroded -- replace them and while your at it cut the commutator and replace the brushes! > really scoots. We have checked the wires, etc. Everything looks good. > Battery isn't the greatest- Epic 3000mah nimh. > > I told him that motor is too much for the truck. Is the problem > possibly not enough current? Maybe a 8cell battery is needed? Thanks Swapped the spur from a 87 to 91 and pinion from 15 to 13. No more stumble. I guess it was just too much current trying to be sucked by the motor. > Swapped the spur from a 87 to 91 and pinion from 15 to 13. No more > stumble. I guess it was just too much current trying to be sucked by > the motor. Thanks for replying with the solution! It's nice to know that our advice is helping. 8) Justin |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2012 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.