Motor trouble

[Daniel C]

I have a wpl military 4x4 that I put a 540 13t in trying to make it super powerful. It has all metal driveshafts gears & axles and with that motor it should climb walls & have ok speed but even with a super rooster ESC a hobby grade controller & receiver the things is slower then a snail plus won't climb over a sock on the floor. I have ajusted the knobs every way possible on the controller & still no change. WHAT GIVES? CAN ANYONE HELP OR KNOW WHAT I AM DOING WRONG

 

[Daniel C]

Hey for the people who like the wpl trucks but can't take the tracks falling off all the time try removing a set of the plastic wheels in the middle bottom and them installing some Lego rubber tires on others kike the photo attached shows on front and back side for a total of 8 rubber tires. It helps having kids to rob from there Lego stash.

problem solved. It turned out better then expected. Oh by the way I did glue them on so they wouldn't move around but installing them they fit really good on there. Glue was just a reinsurance.

 

[TurboChargedHonda]

Did it have this issue before you installed the new motor? If it didn't try testing the motor itself. If the motor works fine by itself, it might be something in the drivetrain causing the issue.

 

[SchrodeMode]

Is your pinion tightened down?

 

[Daniel C]

Did it have this issue before you installed the new motor? If it didn't try testing the motor itself. If the motor works fine by itself, it might be something in the drivetrain causing the issue.

The motor works fine with out a load and spinning the shaft by hand it feels smooth with no issues. Sometimes it will work fine untill it gets set down. I have tryed everything but rebinding the remote. Kinda forgot how. But even the battery. I have used a 6,7.2 & a 7.4. I jus can't figure it out.

 

[TurboChargedHonda]

Try moving the drivetrain without the motor, and see if anything gets stuck. It could also be the slipper clutch slipping too much (tighten it), or maybe the driveshafts slipping.

 

[SchrodeMode]

The motor works fine with out a load and spinning the shaft by hand it feels smooth with no issues. Sometimes it will work fine untill it gets set down. I have tryed everything but rebinding the remote. Kinda forgot how. But even the battery. I have used a 6,7.2 & a 7.4. I jus can't figure it out.

Is it a plastic or metal pinion? New or are you reusing the stock one?

 

[Daniel C]

Is your pinion tightened down?

Ok I'm going to sound stupid here but what is that?

 

[Daniel C]

Is it a plastic or metal pinion? New or are you reusing the stock one?

Oh ok well I am using upgrade leaf springs on front and rear. Is that what you are asking about? All new there and as far as that it is installed correctly. I will post more photos of the truck.

 

[Greywolf74]

Oh ok well I am using upgrade leaf springs on front and rear. Is that what you are asking about? All new there and as far as that it is installed correctly. I will post more photos of the truck.

A "pinion" gear is the gear that attaches to the motor itself and spins the "spur" gear

 

[Daniel C]

Oh I am using a 3mm to a 5mm universal joint from the motor with a 5mm straight shaft to another universal then to a transfer case that has 2 metal slip shafts going to front and rear axle all after market the only thing wpl is the chassis and the cab everything else has been bought.

 

[Daniel C]

Try moving the drivetrain without the motor, and see if anything gets stuck. It could also be the slipper clutch slipping too much (tighten it), or maybe the driveshafts slipping.

Oh no it's all tight and when I disconnect the motor all works just fine from the axles up to where it connects to the motor

 

[Daniel C]

Oh no it's all tight and when I disconnect the motor all works just fine from the axles up to where it connects to the motor That's just what I can't figure out. I am taking the 540 89t out and putting a 540 13t in now and going to see if that helps if not I will try a few smaller motors

 

[Daniel C]

[H
[/H2]
Try moving the drivetrain without the motor, and see if anything gets stuck. It could also be the slipper clutch slipping too much (tighten it), or maybe the driveshafts slipping.

This set up don't have that it's more straight to the point so I don't end up with alot of parts to brake when I sent it through what I plan to drive it through if it will run plus I have two boys that will be driving it so no telling what it will go through.

 

[Daniel C]

Ok this is everything and how I have it connected. I know wire nuts but I did not won't to hook it up like it's going to be permanently just to find out if not going to work so I wire nutted everything together to make shure but as far as I can tell from past builds and YouTube it's all connected correctly please tell me if not and very little in the drive train to go wrong so I am stumped. Just don't get it.

 

[Daniel C]

I do won't everyone helping to know I do appreciate all you're trying to do to help I shure do need it I'm going nuts over this and please any ideas or anything I can try I am more then willing to try it. Over all the feed back I think I have sent all the photos that could be needed but any info or photos anyone wonts I will be happy to post back. Thanks again to all

 

[TurboChargedHonda]

It doesn't look like there's a lot of gear reduction... What turn motor did it come with stock, and is the current motor overheating if you try to drive it for a while? If you still have the original motor that worked, try putting it back in and see if it has the same problem. If it doesn't it is something with the new motor.

 

[Greywolf74]

I have a wpl military 4x4 that I put a 540 13t in trying to make it super powerful. It has all metal driveshafts gears & axles and with that motor it should climb walls & have ok speed but even with a super rooster ESC a hobby grade controller & receiver the things is slower then a snail plus won't climb over a sock on the floor. I have ajusted the knobs every way possible on the controller & still no change. WHAT GIVES? CAN ANYONE HELP OR KNOW WHAT I AM DOING WRONG

I think I see the problem... Your original post said you were running a 13T motor which is not the case. In one of the pics you took the motor can clearly says 540/80T which means you're running an 80T motor, not 13T. A 13.5T motor is approx 3200-3500kv which is on the slower more torque"y" side of 1/10 motors for regular kits. an 80T motor, from my limited knowledge of crawlers, is not only a straight up crawling motor but its really slow and torquey motor even for a crawler. Someone more familair with crawlers my correct me on this but the bulk of the crawlers I've seen built have somewhere between 35T and 55T motors in them. An 80T motor is approximately only about a 450-500kv motor.

Now on top of a very slow motor you have an unknown gear ration in the transmission but I betting its geared pretty high which means you have even less RPMs going to the wheels than you have RPMs on the motors shaft which is already very slow.

TLDR:
Get a lower turn motor. You probably had it about right at a 13.5 or maybe even a 10.5. Hard to recommend a motor size due to the unknown gear ratio of the tranny. OR figure out a way to put in between the motor and the kits drive shaft a small spur gear and a big pinion

 

[Daniel C]

I have tryed the 13t a 80t and a couple in-between the 380 and the 540 not to shure the exact size and all the same. Sometimes it won't even move.

 

[Daniel C]

It doesn't look like there's a lot of gear reduction... What turn motor did it come with stock, and is the current motor overheating if you try to drive it for a while? If you still have the original motor that worked, try putting it back in and see if it has the same problem. If it doesn't it is something with the new motor.

I have tryed a many of motors ranging from the 170 to a 540 but it come with a 170 I think. All is the same oh and yes no reduction. Go big or go home right. I have speed controle on the remote so I can super crawl or turn it up and burn the tires off it. Well it is supposed to.

It doesn't look like there's a lot of gear reduction... What turn motor did it come with stock, and is the current motor overheating if you try to drive it for a while? If you still have the original motor that worked, try putting it back in and see if it has the same problem. If it doesn't it is something with the new motor.