I think my motor has died

[ian986]

So My Motor has seemed to seized I Took it t out of the car and when you run it smokes a bit and smells very bad.

So if I have to buy another motor is there something better to buy like an upgrade ? or should i just buy the same again ?

Thank for the advice as always guys

 

[Nelson.81]

Lots other motors available depends what your looking for really, you’ve smoked that one so maybe a lower kv. What was it in? I’ve a Hobbywing 4990 1650kv & max6 esc to put in my Kronos. 4292 1780kv in my buggy. Twin 40mm fans, 17t pinion good for 60mph+ on 6s with no temperature issues.

 

[ian986]

I was hoping for something more powerful one

 

[Nelson.81]

Many options popular more wallet friendly is surpass rocket motors 4282 2150kv or 1780kv or 4292 1780kv couod look at those, Could go with hobbywing 4274 2150kv bit more expensive but better motor also sensored if ever upgrade esc, to one sensored capable. Those all similar size motors to original you won’t see a huge power gains with them. For that would need upgrade esc/motor go with a max6 combo or a castle creations combo. Sale on AliExpress atm good deals on hobbywing combos & rocket motors whatever you go for.

 

[ian986]

I might have some good news regarding the motor will find out 100% in a few days

I think it might get some fans this time any recommendation's ?

 

[Nelson.81]

Motors can be rebuilt if just bearings shot but fact it was smoking not good sign. Fans all pretty much the same, I install 40mm fans in mine

 

[Horatio]

It looks like the windings have overheated and shellac now lines the inside of the motor.

It's FUBAR.

Yes, you need fans on the 825.

You also need to make sure nothing gets in your fans

Pointless having fans if they're full of grass, moss and twigs.

A comparatively inexpensive Surpass Rocket 4292 1780 KV is 4200 watt motor, compared to the 825 3000 watt motor.

It pulls higher gears and tends not to get anywhere near as hot.

It is heavier though and the 825 pulls off better 0-60 times, but driving the 4292 around, it has a wider spread of useable power and hits 69 mph on 18/52. It barely got warm.

My next planned speed run with the XTR will be with 19/52 and 19/46 ratios, where I expect to see 70-75 mph.

 

[Nelson.81]

It looks like the windings have overheated and shellac now lines the inside of the motor.

It's FUBAR.

Yes, you need fans on the 825.

View attachment 6663

You also need to make sure nothing gets in your fans

View attachment 6664

Pointless having fans if they're full of grass, moss and twigs.

View attachment 6665

A comparatively inexpensive Surpass Rocket 4292 1780 KV is 4200 watt motor, compared to the 825 3000 watt motor.

It pulls higher gears and tends not to get anywhere near as hot.

It is heavier though and the 825 pulls off better 0-60 times, but driving the 4292 around, it has a wider spread of useable power and hits 69 mph on 18/52. It barely got warm. View attachment 6666

My next planned speed run with the XTR will be with 19/52 and 19/46 ratios, where I expect to see 70-75 mph.

View attachment 6667
View attachment 6668

I put the 4292 1780kv in my Kronos for brief blast on torox esc 17/52 hit 55mph off road on grass, box stock hadn’t tuned diffs or anything so think you should hit that 70/75 easy enough if can keep the wheels down. Though I did put a 22t on it in buggy and managed to send the max8 into thermal a couple times so need keep eye on your esc when you use 46 spur.

 

[Horatio]

I put the 4292 1780kv in my Kronos for brief blast on torox esc 17/52 hit 55mph off road on grass, box stock hadn’t tuned diffs or anything so think you should hit that 70/75 easy enough if can keep the wheels down. Though I did put a 22t on it in buggy and managed to send the max8 into thermal a couple times so need keep eye on your esc when you use 46 spur.

The 150A rating on the 1780KV 4292 is pushing the limits of the Torox ESC, but my experience with it, even 18/52 & 19/52 has been uneventful so far.

The Jetkos are heavy and belted, so pretty good for speed runs. On higher gearing, whilst wheelspin is still an issue, wheelies are more manageable. Not so good for 0-60mph. I accept this with the XTR, which whilst light for a basher truck, is pretty weighty compared to a race Truggy like the Sworkz.

For that reason, I'll stick to high speed runs with the XTR and 0-60mph on the Sworkz with the Castle MMX with 1515. It's great fun to drive on 6S btw.

I'll watch the ESC temps. The motor barely gets warm - I'm very impressed with it. It would make a great RTR motor and is cheap.

 

[Nelson.81]

Yes Motor is great for temps but pushing limits on torox or max8 with it if geared up to much, I’ve no trouble on bashing gearing 17t or 18t usually what I run. Would love an sworkz kit the quality finish there kit looks awesome , I know lots love the tekno et48 but the s35te where I’d put my money maybe someday.

 

[Horatio]

Yes Motor is great for temps but pushing limits on torox or max8 with it if geared up to much, I’ve no trouble on bashing gearing 17t or 18t usually what I run. Would love an sworkz kit the quality finish there kit looks awesome , I know lots love the tekno et48 but the s35te where I’d put my money maybe someday.

The Sworkz is awesome and the fit and finish is exceptional. Sparko are produced from the same designers and factory.

My T2E was missing parts (steering track rod ends) and the black and white instruction manual, whilst decent, missed a couple of detail things. In the UK, Answer RC are the supplier for Sworkz and remedied the issue immediately. It happens and mine may have been a one-off. Though I note CCB's Sparko was missing something.

Having got a T2E, I'm tempted by a Kyosho or Tekno. But then CCB's Mugen is a helluva thing, too.

So much choice, so little time (or permission from the missus!).

 

[Nelson.81]

Shopped @ answer rc got the sworkz bruggy body for my Kronos build from them. No doubt race kits handling on different level to rtrs, have an old mugen mbx6 with tekno conversion picked up as roller cheap put corally esc motor in it, best £75 I ever spent. I’m in a comp to try win an X-ray atm. Though a S35evo nitro has just come up for grabs too, not really into nitro but gonna have a punt can always convert it. Or if you’re feeling lucky have a go yourself.

https://randomcompetitions.co.uk/?

 

[ian986]

Would someone be so kind to put a link to fans i need from Ali express and anything else i need to make them work as i really don't have a clue about this.

Thank you so Much

 

[Nelson.81]

Seller I got mine from might find them cheaper if shop around, I recommend 40mm fans colour up to you.

Just found this amazing item on AliExpress. Check it out! ￡1.85 | RC 25/30/35/40/50mm Fan 28000 RPM Heat Dissipation Cooling Fan for RC Crawler 1/10 1/8 1/5 Motor Brushless/Brushed ESC RC Car
https://a.aliexpress.com/_EJKSmQp

I usually buy few extra fans just for backups but here’s fam with double bracket mount, 1 bracket enough per fan I split it for dual fan setup.

Just found this amazing item on AliExpress. Check it out! ￡34.04 | YSIDO Motor Fast Cooling Fan 40x40mm Aluminum Fan w/holder for Traxxas ARRMA 1/7 Hobbywing 4274 4268 Rocket 1/8 RC Car 4082 1515
https://a.aliexpress.com/_EGpzaE1

 

[Horatio]

Seller I got mine from might find them cheaper if shop around, I recommend 40mm fans colour up to you.

Just found this amazing item on AliExpress. Check it out! ￡1.85 | RC 25/30/35/40/50mm Fan 28000 RPM Heat Dissipation Cooling Fan for RC Crawler 1/10 1/8 1/5 Motor Brushless/Brushed ESC RC Car
https://a.aliexpress.com/_EJKSmQp

I usually buy few extra fans just for backups but here’s fam with double bracket mount, 1 bracket enough per fan I split it for dual fan setup.

Just found this amazing item on AliExpress. Check it out! ￡34.04 | YSIDO Motor Fast Cooling Fan 40x40mm Aluminum Fan w/holder for Traxxas ARRMA 1/7 Hobbywing 4274 4268 Rocket 1/8 RC Car 4082 1515
https://a.aliexpress.com/_EGpzaE1

That's rather nice!

I'm using this Yeah Racing dual fan mount, with Surpass Carbon Fibre covers.

These are available in the UK, so there's no need to import from China. Unless you're on a budget. Or like waiting. Or both!

On an entertaining side note - the instructions for the Yeah Racing item was written by someone who doesn't understand how the product actually works.

Yet, what he/she said went all the way to final draft. I have a theory why this happened, but it's political, so I daren't mention it.

The same instructions ended up being preached by some dude in the US, but when people challenged it, he threw wobblies.

The standoffs supplied with the YR item are designed for the purposes of fitting between the top heatsink and the bottom clamp - for those running bigger diameter motors (like the 4992 for example) etc. This is simply fact.

But the weirdy instructions written by an individual who is not allowed to be questioned under any circumstances because: politics - states that the standoffs are designed to be placed under the fans.

If you possess functioning eyes and an IQ higher than your shoe size, you'll quite rightly ask the question: how come there are only 4 standoffs if they are to be used for 2 fans?

Well according to the instructions, they show fans dangling (literally) off just 2 standoffs each.

This is absurd.

So guess what? They're really supposed to be used like this, because: common sense.

Used in this fashion, they work very, very well.

Or you can do it this way, if you like repeatedly breaking stuff:

I mean, seriously!

You can't make this sh1t up!

Critical thinkers - you decide.

 

[ian986]

I have ordered some yeah racing ones from model sport, So I will i might need an explanation how to fits as don't seem to come with enough collar if not i might fight like the blue ones

 

[Horatio]

I have ordered some yeah racing ones from model sport, So I will i might need an explanation how to fits as don't seem to come with enough collar if not i might fight like the blue ones

You don't need to use the stand-offs unless you're trying to fit it to a wide-boy motor.

Then you'd fit them between the clamping plate (on the under side of the motor) and the heat sink.

Repeat: Under no circumstances do you dangle your fans off them, copy?

My bet is that it won't come with any instructions now, given the controversy. But if it does, please share because it will be 'interesting'.

 

[ian986]

So My New motor Turned up today
The Fans turned up too, have not opened them yet but I can see the instructions are wrong like you said
when i open it all up tomorrow I will post a picture for your amusement
I got a yeah racing pinion 14t Do you think that will be safe to run if I have the fans fitted?
Any other tips for syncing the gears ?

 

[Horatio]

So My New motor Turned up today
The Fans turned up too, have not opened them yet but I can see the instructions are wrong like you said
when i open it all up tomorrow I will post a picture for your amusement
I got a yeah racing pinion 14t Do you think that will be safe to run if I have the fans fitted?
Any other tips for syncing the gears ?

Yes - but monitor the temperatures. If you don't have a temp gun, if you put your finger on the motor and can't keep it there for more than a second - it's too hot.

As a rough guide, aim to stay below 160°F (71°C), and under no circumstances run above 194°F (90°C) for extended periods.

There are 3 main reasons why:

Shellac (the coating around the windings in your motor can) begins to soften at around 70°C.

Bearings are not designed to run at above 100°C unless they are upgraded to high temperature ones

Magnets begin to loose flux at around 70°C and bonding materials may soften also.

 

[ian986]

Yes the instructions are as bad as you said