RunRyder RC Helicopter Topic - T-REX 600 Swiched to 650L motor and thing hotted up!!!

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e-Align T-REX 250-450-500-600 > T-REX 600 Swiched to 650L motor and thing hotted up!!!

ki-gas
Senior Heliman
Location: All over Europe, mainly England

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I recently changed the original 600L motor with a 10t pinion to the 650L with a 15t pinion. I left the original 75Amp esc on as I was not intending to do demanding flying.

With the 600L the motor, esc and battery were just warm after a flight but with the 650L the motor, battery and esc are hot, so much so that it has puffed my pack.

It seem that something is working a lot harder that it should be, have I got the gearing wrong?

06-28-2009 02:10 PM

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700E
Heliman
Location: Illinois

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Gearing.....yep

You went up 5 teeth on your pinion!! Thats your problem. I dont remember but I think the stock setup with the 650L motor uses a 13t pinion. Try that.

06-28-2009 02:20 PM

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Ben-T-Spindle
rrProfessor
Location: Central Illinois

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The 650 has a lower Kv so it needs a larger pinion or an 8s LiPo.

Align motors are just designed to run hot. That’s just the way it is.

If you want a motor that has more power, better efficiency, and runs cooler get a Scorpion HK4025-1100.

... BTS

06-28-2009 02:58 PM

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ki-gas
Senior Heliman
Location: All over Europe, mainly England

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700E,
It's one of the early 600's and it came with the 10t and 600L motor. Everything was great and ran only warm. When I bought the 650L motor the shop siad I needed a 15 tooth because as Ben-T-Spindle said it is a lower Kv. Just want to know if others are running the 15t on the 650L motor and weather they have any problems.

B-T-S,
I don't mind the motor running hot but it puffed my battery and I now where near used 80% of capacity. My old 600L motor did not run hot so wondering why the 650L should. I did not change it for more power it's just that the bearing went in the 600L and it was no longer available. Do you know if the gearing is correct?

06-28-2009 07:11 PM

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700E
Heliman
Location: Illinois

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Well, it looks like with a 15t pinion at 75% your HS should be what your looking for. Possibly your throttle curve was set to high? Try it at 75% all the way across, you can even try 65% and still have 1900HS. Hope that helps.

06-28-2009 10:41 PM

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ki-gas
Senior Heliman
Location: All over Europe, mainly England

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Thanks 700E, I'll get the tacho out, hs did not look/sound high but I'll take another look. I think it is set to hover about 79%.

06-28-2009 11:34 PM

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Spitfire1
Key Veteran
Location: Perth Australia

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Maybe you flew too long?

I was flying 7 minutes easily with the 10t pinion 600xl, but when I went up to the 11t 6 minutes puffed one of my packs, ever since then Ive never flown more than 4.30, this is just me, but I think the 80% rule is pushing it a bit, it seems those last Mah`s are the ones that bump up the pack temps to dangerous levels.

Also I think the 650 lower kv motors really need the 100 amp esc, but I would not of thought that would cause the pack to get hot, maybe Im wrong.

06-29-2009 07:06 AM

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cub2000
Veteran
Location: Massachusetts

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15T pinion for the 650L is fine. It's the ESC that might not be able to keep up with it. You'll need the Align 100A ESC that comes with the 650L in the 600ESP kit. Besides, keep in mind that even with the Align 650L / 100A ESC, it is also running hot. My lipo temp right after flight can reach 120F degree easily.

06-29-2009 05:37 PM

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ki-gas
Senior Heliman
Location: All over Europe, mainly England

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Thanks for that cub2000. If it were too much for the esc its thermal cut-out would shut the motor down wouldn't it, not over heat the battery?

It seem to be putting too much load on the system, I have to check I am not running too higher head speed, what head speed to you run in idle up?

06-29-2009 06:00 PM

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ki-gas
Senior Heliman
Location: All over Europe, mainly England

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Thanks Spitfire1 I just read you post after cub2000. You're thinking the same as me about the esc - should not have thought it would puff the pack. My pack puffs after 4 mins. :O(

06-29-2009 06:02 PM

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ikotikot
Heliman
Location: United Arab Emirates

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esc

Quote
15T pinion for the 650L is fine. It's the ESC that might not be able to keep up with it. You'll need the Align 100A ESC that comes with the 650L in the 600ESP kit. Besides, keep in mind that even with the Align 650L / 100A ESC, it is also running hot. My lipo temp right after flight can reach 120F degree easily.

i just fried my esc and my new t600esp almost came down into pieces. but luckily i had it landed safely but it's more like a smoking plant in the air.

i was using all stock (tried both 14 and 15t pinion) and the lipos, motor and esc really really get very hot. and now the esc gave in. i checked the motor and it's still working.

i don't know how can i still use the motor, it's a crap and waste of money i guess. gotta order 85hv and scorpion HK4025-1100. i guess that's the only way to go - neumotors are so expensive.

fly it like a sim, order like it's free

07-01-2009 12:20 PM

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ki-gas
Senior Heliman
Location: All over Europe, mainly England

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It a shame, with the original 600L motor and a 10t pinon I could fly for 8 mins. and everything was only warm, I think Align seem to have got this combo wrong, I can't see a 100A esc making the difference to my setup.

07-01-2009 11:09 PM

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Ben-T-Spindle
rrProfessor
Location: Central Illinois

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Quote
It a shame, with the original 600L motor and a 10t pinon I could fly for 8 mins. and everything was only warm, I think Align seem to have got this combo wrong, I can't see a 100A esc making the difference to my setup.

I agree, that 650L defies logic. What were they thinking?

... BTS

07-02-2009 12:24 AM

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Spitfire1
Key Veteran
Location: Perth Australia

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I found the 600L to be a horrible motor compared to the xl which was Ok, the 600L got so hot you could burn yout finger.

Quote
just fried my esc and my new t600esp almost came down into pieces. but luckily i had it landed safely but it's more like a smoking plant in the air.

Whe I cooked my 75 amp it was more like a small flame thrower comeing out of my canopy, soon as I landed it stopped burning, I was lucky the only thing is side of my frame is silver GF the other is mostly black and looks like the CF version.

07-02-2009 03:04 AM

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Heli-on
Senior Heliman
Location: Morongo Valley, CA - USA

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I've ran the 650L (15T) on the Align 75A ESC. I had switched from the 600XL running 11T (switched 'cause the shaft snapped on the 600XL). Anyhoot, things got so hot it reflowed the solder on my deans connector which caused it to disconnect. Good thing I had been pacticing auto's.

I've since switched the ESC to CC85HV. The 650L was still coming down cooking hot, so I went to 14T. Running 87% TC now and it's hot, but tolerable. Plenty of HS, though.

My stuff's moth-balled for the next couple months (too hot in the desert during summer months for electrics).

If you're going to continue to run the 75A with the 650L, I'd try 14T and possibly even 13T if you can get away with it.

07-02-2009 05:42 AM

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ikotikot
Heliman
Location: United Arab Emirates

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combo

i believe the scorpion hk4025-1100 and cc 85hv is the way to go. or if you can get the neumotors 2.5d, the better.

i heard the hobbywing platinum esc is also ok and a bit cheaper.

fly it like a sim, order like it's free

07-02-2009 06:17 AM

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ki-gas
Senior Heliman
Location: All over Europe, mainly England

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I just don't get it, there's Spitfire's 600L got hot enough to burn yet mine was warm and that was with a headspeed of 1980rpm.

I have found that I have got the temps down a bit by reducing the headspeed from 1920 to 1800 which from memory is around 84% throttle in the hover.

07-02-2009 07:35 AM

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Spitfire1
Key Veteran
Location: Perth Australia

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I have no experience with the 650 motor`s that come with the ESP, but all the Align motors ive had and those of fellow flyers come down really hot, even my 500 size comes down hot, I think its just normal for Align motors. With my Scorpion 4025 1100/Align 100 amp on 6s it doesent matter if I do hard tic tocs the whole 4 minutes, the motor barely gets luke warm, I can fly back to back with that motor.

If your running the ALign motor your best bet is to have fun fly it and not worry about its temp, if you feel how hot it gets after each flight all you will do is scare yourself into buying a new motor.

Im not going to worry about my 500 motor`s temp, hopefuly it will last 6 months - year and then replace it with a Scorpion, Scorpions are also cheaper than the stock ALign motors are.

07-02-2009 08:22 AM

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Spitfire1
Key Veteran
Location: Perth Australia

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Quote
have found that I have got the temps down a bit by reducing the headspeed from 1920 to 1800 which from memory is around 84% throttle in the hover.

Hangon a minute, are you saying your running 84% in you t/curve??

If thats the case, I would think your electrics will heat up, at 84% you might even burn up your ESC, Ive found the best way to keep the temps down is to run 100% on all points, much less than 100%, everything gets really hot.

EDIT.. On thinking I think its just th ESC that gets hot with lower T/curves, but its worth a try.

07-02-2009 08:28 AM

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ki-gas
Senior Heliman
Location: All over Europe, mainly England

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That's what I thought but esc temp has come down with the motor because of the lower rpm.

As you recommend, I'm not bothered about the temps it's just that on fitting the 650L my packs started to get slighlty puffy after 4mins. This may be acceptable but it did not do it with the 600L, I just wanted to know if other had noticed this.

I don't mind melting a motor but the packs are a bit different.

07-02-2009 08:50 AM

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e-Align T-REX 250-450-500-600 > T-REX 600 Swiched to 650L motor and thing hotted up!!!

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