brushless 1/5 4wd conversion about to begin! couple questions.

[aqwut]

Originally Posted by Ryu James

i will check the led meanings. i have checked and re-checked the to make sure its plugged in right and polarity etc. i cannot see anything i am doing wrong? i wish it was something i am overlooking so then its just a quick fix but it seems to be a problem with the esc. i mean, i hooked it up exactly the same twice and one time it worked fine with the MMM and the other time nothing on the HV. i also have test this with the rx and the same thing happens. everything is fine when i hook to my MMM but nothing happens when hooked to the HV.

castle hasnt responded yet to any of my calls or emails. maybe i will hear back tomorrow.

edit: so i checked the sticky with the led definitions and there is not a definition for a 1 second red blink and then nothing. i take that to mean there is something wrong. thanks for your help though metallover. even now i am still open to more ideas. i guess i just want to hang on to the hope that its just something i am overlooking so i dont have to send it in and wait 2 months.

Well, kinda similar problem I have.... my 2280 is sitting pretty in the firehammer, and have no ESC that could handle the current.. Been toying with the MGM for months... Mine takes programming, but nothing else...

[Ryu James]

Originally Posted by aqwut

Well, kinda similar problem I have.... my 2280 is sitting pretty in the firehammer, and have no ESC that could handle the current.. Been toying with the MGM for months... Mine takes programming, but nothing else...

which mgm did you buy? i know they arent cheap. plus i hear getting them fixed is a pain being as they are located in europe. it almost sounds like that little hobbywing is the way to go. didnt you say that your specs showed you werent even drawing 100amps?

btw, i dont really understand all the details of of gearing and watts and on and on. you seem to know all that very well. here is what i am running. was wondering if you could tell me if you think the hobby wing will work

2215 2y 750kv
10s 5000mah 30c
and 15/40 gearing

i know the gearing is high. i can go a bit lower down to a 12t pinion for a 12/40 setup if needed. is that gonna be geared low enough? what would my gear ratio be? remember i dont have the drive reduction unit like you. just a spur and pinion gear and of course the stock front and rear diffs which are 30t spur and 10t pinion.

[aqwut]

Originally Posted by Ryu James

which mgm did you buy? i know they arent cheap. plus i hear getting them fixed is a pain being as they are located in europe. it almost sounds like that little hobbywing is the way to go. didnt you say that your specs showed you werent even drawing 100amps?

btw, i dont really understand all the details of of gearing and watts and on and on. you seem to know all that very well. here is what i am running. was wondering if you could tell me if you think the hobby wing will work

2215 2y 750kv
10s 5000mah 30c
and 15/40 gearing

i know the gearing is high. i can go a bit lower down to a 12t pinion for a 12/40 setup if needed. is that gonna be geared low enough? what would my gear ratio be? remember i dont have the drive reduction unit like you. just a spur and pinion gear and of course the stock front and rear diffs which are 30t spur and 10t pinion.

roughly 7.5 final drive ratio has been the most I've been able to push/try on the 100A ESC without any issues.. but my KV is set for 356, and your's is 750KV.. but your tires are smaller diameter... and your vehicle is quite lighter in mass... your's is about 9.99:1 final drive ratio if you use a 12T pinion... I think yours is setup same as Kaz..? With the buggy tires and the high FDR and higher KV motor/rpm, I think the 100A ESC would handle fine...

I bought the 28025 temporary for my 1/5th scale race a few months ago, but it didn't work.. it was pretty much a waste of money since that's the only ESC that would've been able to handle the 2280-5 on 6S 10000 mAh, 5th scale.., and it still doesn't work, I'm sure Mike would help me out.. Just waiting for a reply.. I'm in the same boat as you, I really don't want to send it out, unless I'm 200% sure that there is nothing else that could be done for it to work.... because my Hydra 240 on 6S couldn't handle that motor either, but that's because it needed water cooling and the motor RPM was 1480KV...

The Hydra was 75+ Deg. C, the Lipos were about 50 Deg. C 6S2P 10000 mAh, and the motor was about 40 Deg. C. and all 6 10 AWG wires were warm...

[florianz]

I think it's just a bad joke, selling expensive esc's which just don't work. and bad service doesn't make it better.

but anyways. some months ago I was about to buy one of those esc's:
http://www.r2hobbies.com/proddetail....=rcps81708_120

My first 5s bl-esc had the same black programming box like that one. So I guess it has a "kind of" car-program. using that box was just so easy. great stuff. But, I didn't use one of the esc's shown above. you probably could use the car brake of that esc. maybe you add some caps to be on the safe side.

suppo used to have a super high voltage esc, but their HP is down. Just because it's "no-Name" and chinese, doesen't have to mean it's rubbish. As you see, you buy "brand" and it's not working at all.

I used to have a plane esc similar to that one http://www.bidproduct.com/part/Produ...20ESC_106.html and it was rock solid, worked absolutely flawlessly. Only problem is, they have no dynamic car brake, but that doesn't matter for you.

here's the suppo 10s esc, I am sure that they had a 100a esc:http://www.lightflightrc.com/HTML/pr...80A_HV_ESC.htm

further there are the etti boat esc, for more than 10s. They are known to be good, not that cheap like a suppo or a hobbywing. I had one, which smoked soon...

I don't know how high the amps are driving that big, bautiful car. using 10s, 100a could be sufficient.

[Ryu James]

ok, so here is the email i just got from castle. it appears it am just an inexperienced idiot. i knew it had to be something i was overlooking. what i dont get is why it didnt say this in the instructions. i guess becuase any boat guy, which is who this esc is for, would have known this without having to to be told.

quote from castle:

Ryan,

The ESC is opto coupled. It does not have a BEC to power the receiver. You must power the receiver and the ESC with a separate receiver battery plugged into the receiver.


end quote.


ok, so it sounds like i need a bec and a separate rx pack. lovely. at least its gonna run today. woohoo. fingers crossed. so, i want to make sure i get this right. i have only used a bec one time and it was a looong time ago. can some of you experts guide me through how to set this up. i have that little blue castle bec that was like $20. is that gonna work?

[florianz]

ooops...

well, w/out bec it won't work...

be careful with the ubec/external bec, it has to work for 10s. it also should provide enough amps for the big servos.

eg, the turnigy ubec/bec are quite good.

[Ryu James]

Originally Posted by aqwut

roughly 7.5 final drive ratio has been the most I've been able to push/try on the 100A ESC without any issues.. but my KV is set for 356, and your's is 750KV.. but your tires are smaller diameter... and your vehicle is quite lighter in mass... your's is about 9.99:1 final drive ratio if you use a 12T pinion... I think yours is setup same as Kaz..? With the buggy tires and the high FDR and higher KV motor/rpm, I think the 100A ESC would handle fine...

I bought the 28025 temporary for my 1/5th scale race a few months ago, but it didn't work.. it was pretty much a waste of money since that's the only ESC that would've been able to handle the 2280-5 on 6S 10000 mAh, 5th scale.., and it still doesn't work, I'm sure Mike would help me out.. Just waiting for a reply.. I'm in the same boat as you, I really don't want to send it out, unless I'm 200% sure that there is nothing else that could be done for it to work.... because my Hydra 240 on 6S couldn't handle that motor either, but that's because it needed water cooling and the motor RPM was 1480KV...

The Hydra was 75+ Deg. C, the Lipos were about 50 Deg. C 6S2P 10000 mAh, and the motor was about 40 Deg. C. and all 6 10 AWG wires were warm...

thanks for the input. i think i will be able to run a test today. so is yours actually geared higher than mine? i guess you could gear a lot higher with such a low kv motor and so much power. i am really hoping it works as planned. i really dont want to have go back to the drawing board.

sorry about your mgm. luckily for me i was just over looking things but it sounds like you know what you are doing and chances are the mgm needs to be replaced. idk, i know some guys swear by them. i have never owned one but have looked at getting one several times.

[aqwut]

Originally Posted by Ryu James

thanks for the input. i think i will be able to run a test today. so is yours actually geared higher than mine? i guess you could gear a lot higher with such a low kv motor and so much power. i am really hoping it works as planned. i really dont want to have go back to the drawing board.

sorry about your mgm. luckily for me i was just over looking things but it sounds like you know what you are doing and chances are the mgm needs to be replaced. idk, i know some guys swear by them. i have never owned one but have looked at getting one several times.

Yeah, mine is geared higher because of the lower KV... But don't hook up your Castle BEC to your 10S, it will fry.. 6S maximum on the BEc, so you'll need a seperate pack for that.. but I suppose you already know this... Your buggy should be rockin' today man.. .Hurry up and post a video...

Originally Posted by florianz

ooops...

well, w/out bec it won't work...

be careful with the ubec/external bec, it has to work for 10s. it also should provide enough amps for the big servos.

eg, the turnigy ubec/bec are quite good.

They do work very good, but I do like the castle UBEC.. I have quite a few of them myself..