Kagama Motor rocket 1780kv

[Opua]

Hi, what do you think about the motor rocket 1780 kv? Is it more powerful of torox? Have any of you mounted it?
Thank you!

 

[Horatio]

Hi, what do you think about the motor rocket 1780 kv? Is it more powerful of torox? Have any of you mounted it?
Thank you!

You can see a detailed account of mine, here:

Surpass Hobby Rocket 4292 1780KV

It is rated as a 4200 watt motor - allegedly 5.6hp or there abouts, so yes - on paper it's more powerful (the Kuron 825 is 3000 watts - or 4.0hp). Given the size of the can and the torque it produces, it should have the power to turn higher gearing. 150a is within the limits of the Torox ESC - but only just.

However, for speed runs, so far my Kuron 825 has been quicker. Same rig, 6S batteries, 13t pinion and 52t spur - The rocket 4292 1780kv did 57mph. The Kuron 825 did 64mph.

This year, the 1780kv motor is going to be geared up and I'm switching to the 46t spur.

I've posted my 0-60 times elsewhere with the Kuron - 3.9 seconds.

On paper, the rocket should beat it - but first it's got to get to 60mph!

What I have noticed is that the motor runs cooler, which is obviously a good thing.

 

[Opua]

You can see a detailed account of mine, here:

Surpass Hobby Rocket 4292 1780KV

It is rated as a 4200 watt motor - allegedly 5.6hp or there abouts, so yes - on paper it's more powerful (the Kuron 825 is 3000 watts - or 4.0hp). Given the size of the can and the torque it produces, it should have the power to turn higher gearing. 150a is within the limits of the Torox ESC - but only just.

However, for speed runs, so far my Kuron 825 has been quicker. Same rig, 6S batteries, 13t pinion and 52t spur - The rocket 4292 1780kv did 57mph. The Kuron 825 did 64mph.

This year, the 1780kv motor is going to be geared up and I'm switching to the 46t spur.

I've posted my 0-60 times elsewhere with the Kuron - 3.9 seconds.

On paper, the rocket should beat it - but first it's got to get to 60mph!

What I have noticed is that the motor runs cooler, which is obviously a good thing.

Do you use stock torox esc? I have thought to put a 20t pinion or change the spur gear. Moreover I have thought also to put it on my Kraton 6s but I don't know if change the esc too

 

[Opua]

I read the previous topic, thanks! So in the end the Kuron 825 is better than the Rocket 4292? I would like to put it on a Kraton 6s, what do you suggest? I should also replace the spektrum esc. Stock?

 

[Horatio]

I read the previous topic, thanks! So in the end the Kuron 825 is better than the Rocket 4292? I would like to put it on a Kraton 6s, what do you suggest? I should also replace the spektrum esc. Stock?

Yes, I'm using the Torox. No complaints there at all.

I think that I'm yet to discover the full capability of the Rocket 4292. It's not as highly revving as the Kuron, but it produces more torque. To exploit this, I need to change the gearing. However, the gearing that works for the 4292 would burn the Kuron 825 up.

What I will say, for typical blasting across a dirt yard, or grassy field - the 4292 doesn't get anywhere near as hot and feels punchy on stock gearing. Both motors are good and there's a certain magic about the stock Kuron 825. There isn't a better 1/8th RTR motor out there.

 

[Opua]

A friend of mine mounted the Rocket 4092 1650 kv on the Kraton, rocket esc (the same one present in this photo where it compares the 1780 motor ), 20 pinion and spur gear of the Arrma felony, excellent result, very fast

 

[Horatio]

A friend of mine mounted the Rocket 4092 1650 kv on the Kraton, rocket esc (the same one present in this photo where it compares the 1780 motor ), 20 pinion and spur gear of the Arrma felony, excellent result, very fast

View attachment 6087View attachment 6088

Get your friend to show us how fast it is!!

He can screen-grab a SkyRC GNSS/GLONASS GPS. It's an excellent bit of kit and satisfies curiosity!

I'm all for making our rigs fast, but I think people ignore 0-60mph performance, which is the very essence of what makes our cars feel fast.

The challenge of having one fixed gear ratio is that what works well for acceleration acts against top speed and vice versa.

I know it's super hard getting our rigs into 100mph, but so too is getting decent 0-60mph times - without electronic driver aids.

Here's my PB with the XTR, using the 825 on 13t.

Here's my PB with my Sworkz, using Castle 1515 and 15t pinion - it didn't make 60mph, but this thing accelerates like a Hyper car - 1.03g!!!

0-50mph in 2.99 seems very quick to me. And if you do some simple maths, you can see that the Sworkz is actually 'quicker'. The G figure doesn't lie.

No real surprises as it's lighter than the XTR by a comfortable margin and both are being powered by 6S. It's all a matter of temperature, traction, gearing, rollout and getting the power down as quickly and smoothly as possible.

 

[Horatio]

In the interests of fairness, I just beat the Kuron 825 with the Rocket 4292 1780kv using 18/52 gearing.

See here:

Kronos XTR Thread

 

[Opua]

Hi, I was thinking to take a hobbywing max 6 instead of torox 185, and motor rocket 4292 1780kv. What do you think?maybe could be better?

 

[Horatio]

Hi, I was thinking to take a hobbywing max 6 instead of torox 185, and motor rocket 4292 1780kv. What do you think?maybe could be better?

So far, my Torox has been fine with the 4292. I have no concerns. According to the specs, it's actually able to handle 185 amps. The 4292 is supposed to draw no more than 150a.

The debate continues, because we all believe the Torox is a rebranded Max 8 and some have stated the specs are 'wrong'.

However - the firmware is 'special'.

The Max 6 would be an upgrade to the Max 8 - both of which are rated at 160a.

The Max 8 recommended no larger than 4278. The Max 6 recommended no larger than 5892.

 

[The Stig]

So far, my Torox has been fine with the 4292. I have no concerns. According to the specs, it's actually able to handle 185 amps. The 4292 is supposed to draw no more than 150a.

View attachment 6115

The debate continues, because we all believe the Torox is a rebranded Max 8 and some have stated the specs are 'wrong'.

However - the firmware is 'special'.

The Max 6 would be an upgrade to the Max 8 - both of which are rated at 160a.

The Max 8 recommended no larger than 4278. The Max 6 recommended no larger than 5892.

Aaaahhhh 'special' firmware

 

[madasuga25]

You can see a detailed account of mine, here:

Surpass Hobby Rocket 4292 1780KV

It is rated as a 4200 watt motor - allegedly 5.6hp or there abouts, so yes - on paper it's more powerful (the Kuron 825 is 3000 watts - or 4.0hp). Given the size of the can and the torque it produces, it should have the power to turn higher gearing. 150a is within the limits of the Torox ESC - but only just.

However, for speed runs, so far my Kuron 825 has been quicker. Same rig, 6S batteries, 13t pinion and 52t spur - The rocket 4292 1780kv did 57mph. The Kuron 825 did 64mph.

This year, the 1780kv motor is going to be geared up and I'm switching to the 46t spur.

I've posted my 0-60 times elsewhere with the Kuron - 3.9 seconds.

On paper, the rocket should beat it - but first it's got to get to 60mph!

What I have noticed is that the motor runs cooler, which is obviously a good thing.

Hi Horatio, are the rocket motors as reliable as hobbywing, I'm looking at the price and there's a 130$ difference between the hw 1650kv and the 1780kv, thanks. I'm trying to be a little cheap on this adventure. Thanks

 

[Sandracer_NL]

Hi Horatio, are the rocket motors as reliable as hobbywing, I'm looking at the price and there's a 130$ difference between the hw 1650kv and the 1780kv, thanks. I'm trying to be a little cheap on this adventure. Thanks

I haven’t run my Rocket 4292 1780kv (paired with a max6) a lot yet, but I’m impressed with how cool it runs. I expected a scorching hot running motor; I don’t know why I expected that though. So it seems I’ve plenty of room to go up in pinion size if I want.
From what I’ve read they’re reliable. I did however change the motor straight away, as stock motor usually are pretty bad and often are the cause for motor damage.

 

[madasuga25]

I haven’t run my Rocket 4292 1780kv (paired with a max6) a lot yet, but I’m impressed with how cool it runs. I expected a scorching hot running motor; I don’t know why I expected that though. So it seems I’ve plenty of room to go up in pinion size if I want.
From what I’ve read they’re reliable. I did however change the motor straight away, as stock motor usually are pretty bad and often are the cause for motor damage.

What was the weather temperature when you were running and what pinion size. I know when I tried running a 15 the motor got to 196 Celsius, it's winter now so I'm going to put the 1780kv in December

 

[Sandracer_NL]

What was the weather temperature when you were running and what pinion size. I know when I tried running a 15 the motor got to 196 Celsius, it's winter now so I'm going to put the 1780kv in December

It was around 20C outside and I’m not 100% sure, but think it’s a 14T. We where tracking racing and I ran 4s pack after 4s pack and when touching the motor it felt like it hadn’t run at all. I do run a 40x28mm fan though.

 

[madasuga25]

It was around 20C outside and I’m not 100% sure, but think it’s a 14T. We where tracking racing and I ran 4s pack after 4s pack and when touching the motor it felt like it hadn’t run at all. I do run a 40x28mm fan though.

Man, I super impressed with the asuga, I can't think of any other rc at this time which could top it, I think it's the ultimate all-rounder

 

[Sandracer_NL]

Yes there are two Asuga’s in our RC group recently. They are more stable on the straight sections, but the Spark is more nimble in the corners. But the Asuga is more nimble as you would expect, judging by it’s dimensions. We all agree that the Asuga’s tires play a big role in that.

 

[madasuga25]

Yes there are two Asuga’s in our RC group recently. They are more stable on the straight sections, but the Spark is more nimble in the corners. But the Asuga is more nimble as you would expect, judging by it’s dimensions. We all agree that the Asuga’s tires play a big role in that.

, I take mine to this 1/5 track and its fun, but it lacks traction but I definitely won't be paying for pro level truggy tyres for it, they won't last 4 packs

 

[Horatio]

Hi Horatio, are the rocket motors as reliable as hobbywing, I'm looking at the price and there's a 130$ difference between the hw 1650kv and the 1780kv, thanks. I'm trying to be a little cheap on this adventure. Thanks

My Rocket motor has been very reliable. I am far from a brushless expert though, as I have experience with only 3 motors.

The 4292 Rocket 1780KV is a 'softer' motor than the stock supplied Kuron 825 motor, in as much as it doesn't rev as highly or spool up as fast and is generally less prone to getting hot.

However, generates more overall power and has a longer can/rotor. It is rated at 4200 watts and can be bought for as little as £35 from Banggood! It's 100% bargain basement territory - but I can't see what (if any) compromise there is. My XTR certainly went very fast with it as it can be geared up to about 17/46. Any taller, the motor - or rather the ESC - says 'nope' and cuts momentarily.

Pros:

• More useable torque
• Great bang for buck
• Runs cooler
• Can be geared up
• Great for every day use

Cons:

• More weight
• Longer spool up
• Less suited to 0-60 runs

 

[madasuga25]

My Rocket motor has been very reliable. I am far from a brushless expert though, as I have experience with only 3 motors.

The 4292 Rocket 1780KV is a 'softer' motor than the stock supplied Kuron 825 motor, in as much as it doesn't rev as highly or spool up as fast and is generally less prone to getting hot.

However, generates more overall power and has a longer can/rotor. It is rated at 4200 watts and can be bought for as little as £35 from Banggood! It's 100% bargain basement territory - but I can't see what (if any) compromise there is. My XTR certainly went very fast with it as it can be geared up to about 17/46. Any taller, the motor - or rather the ESC - says 'nope' and cuts momentarily.

Pros:

• More useable torque
• Great bang for buck
• Runs cooler
• Can be geared up
• Great for every day use

Cons:

• More weight
• Longer spool up
• Less suited to 0-60 runs

Thanks