Anyone ever seen this before?

[C-MuRdaA]

Looks like a brush got sucked into the motor.



I was having problems with the motor cutting out so I emailed HH yesterday. After doing done research on here people had mentioned about the brushes getting caught on the brush hood.
After seeing that fixed certain issues for people I jiggled the brushes around a little and everything worked again for a short while. If I stayed on the throttle everything was fine, but if I got off the throttle the motor wouldn't work without moving the brushes a little. All of a sudden in the middle of driving everything locked up and I thought that maybe the tranny blew a gear. After tearing everything down and taking off the end bell that's what I found.
I was running a BRXL with the expert 13T (purchased in April of this year) in a Wraith with 12/56 gearing. I had run about 5-6 packs (2s 4000mah) through it when this happened.
Thoughts? Did I do something wrong to have this happen?

UPDATE: Turns out that I bought a 13T TorqueMaster instead of the 13T CrawlMaster which would be the proper motor for this build. Totally my mistake, I contacted Holmes Hobbies and they set me up with the proper parts! Great customer service!

[666]

Looks like the brushes wore down so far one got sucked in!?

[EddieO]

Overgeared and you threw a plate off the comm from it getting hot......

Later EddieO

[C-MuRdaA]

Overgeared? I thought that I had the proper gearing. What gearing is recommended for that motor?

[Solitaire]

Holmes has it right on the site that gearing shouldn't be more than 87/16 due to possible overheating and that's for the 16T Crawlmaster.

You can do the math.

[C-MuRdaA]

Oh well, I guess I'll get his recommendation when they answer my email tomorrow. I thought I did thorough research on gearing but it's obvious that I did not.

[EddieO]

Thats a 3 segment arm....if its a 13t as you said, a motor that low of turns really should not be in a wraith....really can't gear it right and get the power output you would want out of it...

For a 30t 3 segment, typically 87/14 or so is a good start...

Later EddieO

[WHITE-TRASH]

Originally Posted by EddieO

Thats a 3 segment arm....if its a 13t as you said, a motor that low of turns really should not be in a wraith....really can't gear it right and get the power output you would want out of it...

For a 30t 3 segment, typically 87/14 or so is a good start...

Later EddieO

Thats a fact! 3 segment 13 turn would be sweet in a drifter or even a losi crawler but not in something like a wraith unless running low profile tires.

[C-MuRdaA]

I thought it was a good motor based on what people posted in the "what powers your wraith" thread.

[WHITE-TRASH]

Originally Posted by C-MuRdaA

I thought it was a good motor based on what people posted in the "what powers your wraith" thread.

It is a good motor just not in a rig with tall gears. If you were running short tires or had a gear reduction unit on the trans it would be great and live a long time with some maintenance. It must have smelled hot a few times before it smoked due to the gearing.

[slimfire]

Originally Posted by C-MuRdaA

I thought it was a good motor based on what people posted in the "what powers your wraith" thread.

I am currently running CM pro 13T on my wraith geared 13/88.
I mostly do hard crawling an trailing and some up hills
I always monitor motor temp though
So far so good

However I am just about to try HH Torque Master PRO 35t with higher gearing to check the different performance with the same use




- slim -

[Trubble]

Originally Posted by C-MuRdaA

Thoughts? Did I do something wrong to have this happen?

12/56 gearing, sounds like 32 pitch. Equivalent to 18/84 in 48 pitch. Kudos for going down in teeth on the pinion, however by going down even more teeth on the spur, you've effectively raised the gearing from the already overgeared (IMO) stock ratio.
Next time try a 10/58.

And as was noticed, you have a 3 segment armature. That's a Torquemaster isn't it? You should have been running the 5 segment Crawlmaster. Even at that, the 13 turn/ 5 segment is supposedly roughly equivalent to a 26 turn/ 3 segment, which I think might be just a tad light for that big of a vehicle, especially if you do any off-pavement running.
Next time, I think the 30 turn Torquemaster or the 16 turn Crawlmaster would be more appropriate.

Stop back and let us know which way you decide to go in the future. Good luck.

[JohnRobHolmes]

Originally Posted by C-MuRdaA

I thought it was a good motor based on what people posted in the "what powers your wraith" thread.

The 13t Crawlmaster is suggested. The 13t TorqueMaster is not. They are different motors with vastly different speeds, and you are not the first customer to pick up a 13t TM and blow it up in a wraith. We put a disclaimer on the TM expert and sport pages months back to address this Holmes Hobbies LLC


The brushes wore out quickly because of your gearing and motor speeds. Then the brushes started bouncing as the length was too short to keep contact, which overheated the motor and caused your intermittent connection and comm failure. JOnathan has sent/ will send an email discussing our options to get you running again with a more suitable choice.

[C-MuRdaA]

Thanks for all the replies, I spoke to Jonathan today via email about sending my motor in repair. I'll get with him Ina more Wraith appropriate motor.
What type of truck is the Torque Master best suited for?

[JohnRobHolmes]

The 13t TM is for fast rigs like a tin hammers. All the other winds are crawler specific, it is a crawler motor with expectation of the 13.

[C-MuRdaA]

So now I need to buy a Twin Hammers. Lol

[C-MuRdaA]

UPDATE: Turns out that I bought a 13T TorqueMaster instead of the 13T CrawlMaster which would be the proper motor for this build. Totally my mistake, I contacted Holmes Hobbies and they set me up with the proper parts! Great customer service!

[redsawacs]

All the more reason to keep with traditional naming conventions...why would anyone consider running anything lower than a 20t in a trail rig of any kind??? Just makes sense

[JohnRobHolmes]

Originally, the 13t was only going to be the 5 slot CrawlMaster version which is the right speed for crawlers. We got a botched shipment of 13t 3 slots and they sold well for fast rigs, so we have continued stocking them.

[winnerone23]

Haha, oh it takes me back.. I bought a used 17t "crawlmaster pro".. Dropped it in my wraith, was happy on 3s but, just wasn't happy enough... So I dropped a 4s in it! Waahahahaha... Well, the 17t Torquemaster pro Did Not hold up! Blew the endbell right off the can.. It had melted.. oops..

Ur 56/12 gearing isn't horrible, with the right motor.. It is pushing it to the limit tho..
I'm pretty sure I'm either 56/10 or 56/11 in all my rigs.
I ran a 16t crawlmaster pro 56/11 on 4s in my class 2 for a year, without issue or fail! Yes, it's a 1.9, not a 2.2.. Then again, my 1.9 is 3lbs or so heavier then my wraith..

I'm now running a HH Trailmaster BL 3100kv on 4s in it! Oh yeah!
Still smooth low end crawling and break neck speeds!