New Holmes Hobbies Motor Coming Soon (Crawlmaster V2)

[HumboldtEF]

Holmes Hobbies has a new brushless motor coming soon, likely this Monday 1/20. He forgot the name so its either the Crawlmaster BL or Crawlmaster BL V2
EDIT: its the CrawlMaster V2

I'm pretty exited to try it out. He posted a video about it so you can check that out if you haven't seen it.

Basically its a V2 of the Crawlmaster BL. Instead of working with the standard/off the shelf components that make up the motor he's designed some parts from scratch to better optimize it. More magnets, more torque density and its optimized a to work well with AM32 ESCs. Its short enough to fit in a VFD/VRD with the stubby conversion kit. The price should be a bit cheaper too.

I didn't realize that he had been limited to what manufactures had on offer for components in the past so I'm exited to see how much he can add to the already great motors.

 

[durok]

Super-stoked for this - I love when JRH starts going off about design innovations!

 

[JatoTheRipper]

I'm still not sold on the Stubby kit and motor vs a Fusion Pro in my VRD Carbon. Does anybody have proof showing how one performs better than the other given everything else is EXACTLY the same?

 

[BamaRuckus]

I'm still not sold on the Stubby kit and motor vs a Fusion Pro in my VRD Carbon. Does anybody have proof showing how one performs better than the other given everything else is EXACTLY the same?

Hopefully soon! I am interested but I will need a rig that has more metal and maybe straight axles or something custom

 

[HumboldtEF]

I'm still not sold on the Stubby kit and motor vs a Fusion Pro in my VRD Carbon. Does anybody have proof showing how one performs better than the other given everything else is EXACTLY the same?

I haven't tried the Fusion yet but any stubby will be lighter for sure. Whether you can prove its better good luck, crawlers have so many frickin variables its almost impossible to quantify.
They're probably both great options for motors but for me the VFD/VRD stubby kit's key benefit is in adding the servo on axle.

A stubby revolver used to be the only motor short enough to fit so its nice there will be inrunner options too

 

[JatoTheRipper]

Hopefully soon! I am interested but I will need a rig that has more metal and maybe straight axles or something custom

Ha you just got your first rig. Take your time and enjoy it. BTW - all metal is not always a positive. Plastic axles and skid plates slide over the rocks much better than any metal parts.

I haven't tried the Fusion yet but any stubby will be lighter for sure. Whether you can prove its better good luck, crawlers have so many frickin variables its almost impossible to quantify.
They're probably both great options for motors but for me the VFD/VRD stubby kit's key benefit is in adding the servo on axle.

A stubby revolver used to be the only motor short enough to fit so its nice there will be inrunner options too

Lighter isn't always better as we know. But the bigger question in my mind is that the Stubby kit moves the weight higher than the stock location of the motor from what I understand. Therefore, you can't just factor in the front to back weight movement, you also have to factor in the vertical change in center of gravity.

 

[BamaRuckus]

Ha you just got your first rig. Take your time and enjoy it. BTW - all metal is not always a positive. Plastic axles and skid plates slide over the rocks much better than any metal parts.


Lighter isn't always better as we know. But the bigger question in my mind is that the Stubby kit moves the weight higher than the stock location of the motor from what I understand. Therefore, you can't just factor in the front to back weight movement, you also have to factor in the vertical change in center of gravity.

More like a Carbon kit or something fancy. My TRX4 is really beast. but I have limited rocks more woods and trails.

 

[JatoTheRipper]

More like a Carbon kit or something fancy. My TRX4 is really beast. but I have limited rocks more woods and trails.

With not many rocks, the VRD Carbon will be even more boring. Maybe you need something more scale that will be challenged by the tame trail terrain?

 

[BamaRuckus]

Ya 1/10 is about as big as I can go.

 

[HumboldtEF]

Lighter isn't always better as we know. But the bigger question in my mind is that the Stubby kit moves the weight higher than the stock location of the motor from what I understand. Therefore, you can't just factor in the front to back weight movement, you also have to factor in the vertical change in center of gravity.

I didn't say lighter was better but when talking about a comp rig weight is a huge factor/obsession. Take away some sprung weight by switching to a smaller motor and then if you need to add it back to the axles if you want to stay at that weight. In theory that should be beneficial and lower the CG.

The stubby kit only moves the motor back not up. All of the mount points are identical to a regular VFD transmission. The VRD skid is angled so I guess technically you could say it is raised up ever so slightly since its farther back. but a stubby kit with stubby motor vs a non stubby kit with a Fusion motor would put the back end of each motor very close to the same spot.

 

[diezel666]

I'm still not sold on the Stubby kit and motor vs a Fusion Pro in my VRD Carbon. Does anybody have proof showing how one performs better than the other given everything else is EXACTLY the same?

@HumboldtEF is correct. The Stubby Trans kit doesn't move the motor UP, but more rearward.

I actually went a way different path as I wanted lighter weight, but not more rearward weight. I went with the regular trans setup in my VRD, with a Stubby motor.

IMHO, best of both worlds.

 

[JatoTheRipper]

I didn't say lighter was better but when talking about a comp rig weight is a huge factor/obsession. Take away some sprung weight by switching to a smaller motor and then if you need to add it back to the axles if you want to stay at that weight. In theory that should be beneficial and lower the CG.

The stubby kit only moves the motor back not up. All of the mount points are identical to a regular VFD transmission. The VRD skid is angled so I guess technically you could say it is raised up ever so slightly since its farther back. but a stubby kit with stubby motor vs a non stubby kit with a Fusion motor would put the back end of each motor very close to the same spot.

Thanks for the correction. My memory failed me. The motor gets moved back not up. Still a typical disadvantage in a crawler to move weight more rearward. But like you said, you can then add the difference in weight to other areas. But still, I'm not sold on the Stubby kit.

 

[JohnRobHolmes]

Hey yall!

The stubby kit on the vrd allows for the behind the axle servo mount, which does lower CG overall. But it also pushes CG back if not balanced by knuckles or wheel weight or lighter rear. I typically have been running plastic rear axle and metal front with knuckle weight and lighter wheels. So the little change of the rearward stubby motor isn't noticed much. I was just able to design this motor to fit, so I figured it was a goal to meet.

Im pretty excited about this motor, and the stator tooling for sure. In the past I have been using off the shelf stators and work with the magnets to make them perform how I want. This time I designed the stator as well, which afforded a LOT of improvements since 10 pole inrunners arent exactly popular in any industry, and all the normal 12 slots are either designed for 4 pole (distributed winding) or not designed for anything at all and being kinda bad at both distributed and concentrated patterns. The 10 pole is concentrated, so the custom stator tooling was a must to do what I wanted.

The ability to fit the standard 15mm stator stack into a 35mm long housing was greatly helped by the winding pattern of the 12 slot 10 pole combo. I had to get rid of the solder tabs but it was worth it for this model.

So much room for activities on the rear of the motor too

 

[durok]

Hey yall!

The stubby kit on the vrd allows for the behind the axle servo mount, which does lower CG overall. But it also pushes CG back if not balanced by knuckles or wheel weight or lighter rear. I typically have been running plastic rear axle and metal front with knuckle weight and lighter wheels. So the little change of the rearward stubby motor isn't noticed much. I was just able to design this motor to fit, so I figured it was a goal to meet.

Im pretty excited about this motor, and the stator tooling for sure. In the past I have been using off the shelf stators and work with the magnets to make them perform how I want. This time I designed the stator as well, which afforded a LOT of improvements since 10 pole inrunners arent exactly popular in any industry, and all the normal 12 slots are either designed for 4 pole (distributed winding) or not designed for anything at all and being kinda bad at both distributed and concentrated patterns. The 10 pole is concentrated, so the custom stator tooling was a must to do what I wanted.

The ability to fit the standard 15mm stator stack into a 35mm long housing was greatly helped by the winding pattern of the 12 slot 10 pole combo. I had to get rid of the solder tabs but it was worth it for this model.

So much room for activities on the rear of the motor too

Can't wait to run one of these, JRH...

 

[HumboldtEF]

Hey thanks for chiming in @JohnRobHolmes
I'm exited to try this thing out!

These are now up on the Homes Hobbies site, 1800KV, 2300KV and 3000KV CrawlMaster BL Series - Brushless Motors - Motors

I just ordered the 1800KV version and the HV ESC. I plan to run it on 4S in my H10 kit, It was a toss up between the 1800KV and 2300KV. I think if its a tad too slow I can bump up the pinion gear. My other H10 (RTR) is already on the fast side running a 2700kv puller pro on 3S so having a slower one would be nice.

 

[JohnRobHolmes]

Hey thanks for chiming in @JohnRobHolmes
I'm exited to try this thing out!

These are now up on the Homes Hobbies site, 1800KV, 2300KV and 3000KV CrawlMaster BL Series - Brushless Motors - Motors

I just ordered the 1800KV version and the HV ESC. I plan to run it on 4S in my H10 kit, It was a toss up between the 1800KV and 2300KV. I think if its a tad too slow I can bump up the pinion gear. My other H10 (RTR) is already on the fast side running a 2700kv puller pro on 3S so having a slower one would be nice.

Should be great on 4s. Plenty of gearing range to work with on VP rigs.

 

[89Industries]

So much room for activities on the rear of the motor too

While I'm trying to justify buying a new crawlmaster bl v2 (no vehicle to put it in currently), I'm amazed nobody has commented on this not so subtle hint at what everybody keeps asking HH for.

I think.

 

[Col_Sanders]

Thanks for the correction. My memory failed me. The motor gets moved back not up. Still a typical disadvantage in a crawler to move weight more rearward. But like you said, you can then add the difference in weight to other areas. But still, I'm not sold on the Stubby kit.

A bit less sprung weight but dropping the steering servo down an inch or so is probably the bigger advantage.

 

[JohnRobHolmes]

While I'm trying to justify buying a new crawlmaster bl v2 (no vehicle to put it in currently), I'm amazed nobody has commented on this not so subtle hint at what everybody keeps asking HH for.

I think.

Ive been hinting a while! But supporting the motor project is also key to... future ones

 

[HumboldtEF]

While I'm trying to justify buying a new crawlmaster bl v2 (no vehicle to put it in currently), I'm amazed nobody has commented on this not so subtle hint at what everybody keeps asking HH for.

I think.

Hmm if I'm reading between the lines correctly maybe just maybe there could be a 2 in 1 version. <-- Just for anyone else as thick as me who didn't pick up on it at first lol

Thanks 89Industries!