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The Holmes Puller Pro BL 540XL 3500kv the YETI Grail?

JohnRobHolmes said:
I did design this motor around being used in a Yeti as the primary function, so I can confirm it is a pretty dang good match.


For people wondering about the internal difference between a Pro4, Pro4 HD, and the Puller Pro XL, here are some numbers from our last measurements.


Stator length:

Standard 540:21mm
Pro4 21mm
pro4 HD 25mm
PPro XL 34mm


Also look at the motor weights. 10 oz for the Puller XL. 7.8 ounces for the Pro4 HD. The difference is magnet, steel, and copper!
Click to expand...

**the below statement is intended to be read in a 8 year old high pitched teasing you on the playground sorta voice**

See I told ya, I told ya:lmao:

**ok back to normal voice**

Once again I'm gonna say, "Tekin who" "thumbsup"
 
Want to find the weak spots in your rig? Install the Puller Pro 540XL! lmao

Bye Bye plastic rod ends.

9298E896-0E2C-46F1-9DBA-58EED715B851_zpsox49fliv.jpg


FF5CD47B-F280-4357-9669-1607667C98F9_zpse1spmfvo.jpg
 
I can tell you the tenshock may look similar but the internals aren't the same. The 411 is a few mm longer externally (does it even fit in the yeti?), but the stator is only 28mm long per my notes.
 
Got mine in the mail today!!!! I'm hoping to get pictures up for drooling purposes, but i think i actually have to get off my tired ass to take them first:roll:

So lets say.....to be continued"thumbsup"
 
I thinking I want to stick this in my Wraith build...I sure hope supershafty's wraith transmission is up for it. :twisted:
 
I just ran the puller for the first time. before I was running the Pro4 hd 4300 on 3s geared 12/68. Now with the puller I geared it 17/68. With the higher gearing id say the speed is really close to the 4300 and it was noticeably smoother off idle in the rocks. The temps were cool for the 10 min run with a mix of rock work and speed runs. My temp gun needs a battery so its down but I was able to hold my fingers on it for 3-4 seconds comfortably after 10 min.

Im very pleased so far "thumbsup"
 
frdtrkguy said:
I just ran the puller for the first time. before I was running the Pro4 hd 4300 on 3s geared 12/68. Now with the puller I geared it 17/68. With the higher gearing id say the speed is really close to the 4300 and it was noticeably smoother off idle in the rocks. The temps were cool for the 10 min run with a mix of rock work and speed runs. My temp gun needs a battery so its down but I was able to hold my fingers on it for 3-4 seconds comfortably after 10 min.

Im very pleased so far "thumbsup"
Click to expand...


Hmmm curious of 2 things. I was going to start at 16t myself, but why 17t?

You were running the Tekkin at 12t, why so low?

I have read that gearing down to 12/64 puts the Yeti almost identical to the Wraiths final gear ratio, so if that is what you were going for, why change so drastically with the new power plant?

Not impugning your character or judgment here, this is purely a quest for knowledge. I'm fairly ignorant about gear ratios and even worse at understanding how to choose whats best for me. I usually just steal some ones set-up that seems to run about how i do.
 
Rockwolf said:
Hmmm curious of 2 things. I was going to start at 16t myself, but why 17t?

You were running the Tekkin at 12t, why so low?

I have read that gearing down to 12/64 puts the Yeti almost identical to the Wraiths final gear ratio, so if that is what you were going for, why change so drastically with the new power plant?

Not impugning your character or judgment here, this is purely a quest for knowledge. I'm fairly ignorant about gear ratios and even worse at understanding how to choose whats best for me. I usually just steal some ones set-up that seems to run about how i do.
Click to expand...

Well, the 4300 is a rpm motor and gets hot when its geared too high. And I do a lot of rock crawling so I like the extra torque.

I geared the puller a little higher to gain back the wheel speed loss from going from 4300kv at 12/68 to 3500kv geared 17/68.

Based on the effort to turn the output shaft on the puller vs. the pro 4, I was fairly certain that the puller would have a lot more torque and could handle the higher gear. I was right.

And, generally speaking, I think Axial over gears everything for the wow factor to the detriment of the electronics. (smoked/over heated motors)
 
Last edited:
What kind of top speed are you getting with this motor? I'm building my Yeti more for speed/bashing. I doubt it will ever see rocks.
 
ordering mine now!!! Super cool of john to chime in and state the FACTS. Your the man John, that alone sold me on the motor "thumbsup"
 
OK OK sure I'm a little late with this, but here are the pictures!:mrgreen:



And a couple from the mounting:





And thats it until I actually get the Yeti re-built:oops:
 
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