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December 10, 2018, 20:52:32 PM

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Author Topic: Blast from the past  (Read 1451 times)

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Offline TC

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Blast from the past
« on: February 05, 2018, 21:13:46 PM »
Hi All,

I've just joined my local club and they have an indoor meeting next month, well, I've dug out my old shockie from way back when and given it a once over, i was planning to try it on a 2S 600mah as the 3S 800mah that i used to have are still with it but die after about 30 seconds. However with the 2S connected, as soon as I open the throttle I think the voltage cut off comes in, the motor spins up and cuts straight out, I believe that I have a Tsunami 10 esc but I cant find my original Instructions, I've found some online but they don't clearly state that it auto detects cells or if it can be selected, it just says 2-3 cell lipo......

I've found links to instructions on numerous sites but many no longer work, any chance that anyone has a copy buried that they could dig out as I'd rather not have to buy new batteries..

Cheers,

TC


Offline Gryshnak

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Re: Blast from the past
« Reply #1 on: February 06, 2018, 17:42:59 PM »
Does this help?  It looks like it has a number of different modes...


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Offline TC

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Re: Blast from the past
« Reply #2 on: February 07, 2018, 10:35:01 AM »
Hi,

That's the one that I've found but it just says 2 -3 cells, I'd thought that it would auto detect the cell count but I think that i'll run through the set-up for Mode 3 and see if it senses the voltage at this point,

Thanks for your help.

Regards,

Tony


Offline Gryshnak

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Re: Blast from the past
« Reply #3 on: February 08, 2018, 10:34:05 AM »
Can you hook it up to a different motor, or try with a different battery pack?  That would soon tell you if the problem lies with the motor, the ESC, or the battery.

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Re: Blast from the past
« Reply #4 on: February 08, 2018, 11:34:09 AM »
It's a basic auto-sensing controller. Just count the beeps and make sure it's in mode 3 (aeroplane) and lithium mode. Mode 3 makes sure the brake is off (even on a shokie slamming the throittle shut with the brake on will rip the motor out of the aeroplane). Lithium mode tells it to use a 3v/cell low-voltage cut-off rather than the "85% of initial voltage" that it would give on the nickel setting. The ESC notes the voltage on switch-on and decides whether you've connect a 2-cell or 3-cell battery. Not that this is why you should avoid connecting a partially-discharged battery because the reduced voltage may cause it to thing there are fewer cells and thus set a very low LVC (this isn't likely to be a problem for 2-3cells, but can be a major issue with >4 cells). Be aware that the 3v/cell cut-off was OK for lipos 10 years ago, but modern lipos need a much higher setting - typically 3.5v/cell.

As to your actual problem - 98% probably that your batteries are shagged. They die over time (especially the old ones). These days batteries cost cashewnuts compared to what they cost then (I remember the first time I bought kokam 3s-360 packs they were over 25 EACH), so just buy a few more.

FWIW it sounds like you are putting far too big a battery in it if it's an actual shockie (ie somethjing the size and weight of one of the Ikarus ones). My shockies weighed 150-170g including battery and would hover at under half throttle on about 3A from a 2 or 3s battery - motors would have been either Axi 2208/54, Typhoon 3/3d or C&K "specials" (the Axi would have used 3s, the others 2s). The largest batteries would have been thunderpower 450s, but most used the kokam 360s. Bigger batteries just added weight and crippled the flying performance!

0.0002 supplied,

PDR
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Re: Blast from the past
« Reply #5 on: February 08, 2018, 12:56:47 PM »
May be easier to go for a few new batteries, that isn't the problem as they are brand new 2S 600mah that I use in a Twisted Hobbies Crack Beaver, I'll get a couple of small 3S, I was only avoiding this as the postage will be more than the cells!!

I will, set up the controller again, didn't get a chance last night as ended up working late...

Thanks for the two pence worth, all advice appreciated.

TC

Offline Gryshnak

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Re: Blast from the past
« Reply #6 on: February 08, 2018, 22:22:58 PM »
Any time you get a problem like that, swapping out one component at a time will usually reveal the culprit pretty quickly.  The key is to only replace ONE item at a time, then run another test.  If the symptoms persist, swap out something else and try again.

If you have enough spare hardware, you could even make another setup and swap components between the two.  When the dodgy component is moved or replaced, you should notice the difference at once.

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Offline TC

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Re: Blast from the past
« Reply #8 on: February 10, 2018, 18:25:22 PM »
I definitely think i need (?) a servo tester and wattmeter...

However, update on the Shockie, tried the Tsunami set-up and couldn't get it to work, bit more googling and various old forums and saw the name 'castle Creations Phoenix 10' and a lightbulb came on!!! Downloaded the instructions for that and its all looking good, cut-off appears to be 3.2V (per cell) so i'll take it easy for a bit and see how long i can fly without killing my new batteries.

Just weighed it and its coming in at 190g including battery (2S) (and some old repairs).

Thanks again for the help, always appreciated.

TC


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Re: Blast from the past
« Reply #9 on: February 10, 2018, 20:37:57 PM »
IIRC Tsunami was the model name for the speed controllers made by the dutch low-cost brushless motor company HET to go with their "Typhoon" range of low-cost outrunner motors. They were the first in this market and for a while had quite a dominance before others caught up. They were promoted heavily in the mags by Nigel Hawes etc.

Castle Creations was an american company which played heavily on the "Made in the USA" tag to gain a loyal customerbase in the colonies. They were something of a marmite brand -some loved them while others had "issues", especially when used on 35MHz receivers rather than the 72MHz ones they were designed for and tested with. And they did make the odd lemon - if you want some amusement search RCGroups for threads on the Phoenix 25 and it's habit of turning into an incendiary. CC announced that they had investigated the problem and determined that it was the fault of the motor designers who designed motors that didn't suit their ESC. Apparently the Phoenix 25 wasn't suited to low-Kv outrunners. Or high Kv outrunners. And inrunners weren't really its cup of tea either. But other than those it was OK. Then they did a software update to fix it, but that made the motors so noisy they failed club noise tests (for power models!). Watching our colonial cousins torn between loyalty to an american firm and criticising an obviously defective product was a rather amusing spectator sport.

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Offline THE BLACKBIRD

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Re: Blast from the past
« Reply #10 on: November 14, 2018, 09:10:12 AM »
Dont mention Castle Cremations  >:( >:( >:( >:( i had two of their 160A ESCs in my Blackbird and two 120mm lander fans, two years in the making and a lot of money
Taxing out for it maiden flight i turned it to line up for take of and there was smoke then flames, the modle was a good 75M awayat the end of the runway, by the time my old legs got me there it was well a blase
The only thing i could do was jump on it and break it up to try to save what i could, totally destroyed
It appeared that casle creamations had a issue with the 160 A esc that was known about, but FAST LAD model shop did not mention it to me when selling me the two esc and four thunder power lipos, well over
1000 worth and they did not want to know about the fire, nor did CASTLE CREMATIONS  >:( >:( >:(
The man that never made a mistake
Never made anything

Offline paulinfrance

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Re: Blast from the past
« Reply #11 on: November 14, 2018, 10:44:21 AM »
I still have a 10A one which is still going,( one of the first )  and it is 1/10 of the size of HK ones,,,
Mode 2 THE only way to fly


 

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