Another Baja Steering Servo Problem

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HawaiianRevo

HawaiianRevo

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Well I finally got the Baja finished enough to start it. It started fine and ran great for about 1/4 tank of fuel and then the steering servo crapped out.:( I took the servo out and it was still smokin hot even after the fifteen minutes it took to remove it. I pulled the back off and the cover was almost melted through and the circuit board looks like my charcoal grill. I'm going to call HPI in the morning to see if this will be covered under the warranty. Is this something that I could have caused with the TX settings? It is a brand new DX3R and I didn't play with any of the settings. Basically the TR and ST trim was zero. If anybody has an idea please chime in.
 
Frame Rate on the TX. it needs to be set to 11ms i belive. if you check, yours is likely set to 5ms or similar, change it to 11ms.

hpi will likely swap it out for you though it is ultimatly your responsibilty to know how to set them up, and Spektrums instruction are anything but clear, consice and definative.

the issue is the radio thought it was talking with digital servos, but was speaking to analog servos, and basically talked it to death. lol
it could be endpoints but most people know how to set that up, but not many understand or know about the framerate problems that can be caused if they are on the wrong setting.

just be easy going and don't get pissy when you call HPI, and they ll probalby send one right out.
 
Timmahh said:
Frame Rate on the TX. it needs to be set to 11ms i belive. if you check, yours is likely set to 5ms or similar, change it to 11ms.

hpi will likely swap it out for you though it is ultimatly your responsibilty to know how to set them up, and Spektrums instruction are anything but clear, consice and definative.

the issue is the radio thought it was talking with digital servos, but was speaking to analog servos, and basically talked it to death. lol
it could be endpoints but most people know how to set that up, but not many understand or know about the framerate problems that can be caused if they are on the wrong setting. just be easy going and don't get pissy when you call HPI, and they ll probalby send one right out.
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I do have a question about the frame rate. I am running a Hitec HS 7955 TG for the throttle. According to the spectrum manual all digitals have to be run at 5.5ms. Will running the Hitec at 11ms hurt it or will it just be slower? I did turn everything on and let both syncros center before I attached the horns. Anyway this gives me time to paint the body and try to learn the new TX. On the bright side my 1/4 tank of play time was an absolute blast.:clown:
 
yes, you can not mix digital and analog servos on the spektrum systems as far as i know. you either have to run all digi or all analog. to date, i think the Nomadios are the only company that can run analog and digital servos together.


so yes, if you have a digital servo on your t/b, you ll want a digital servo on your steering so you can run the 5.5ms setting.
the multiplex rhino, and Hitec 5745 are both 1/4 scale digital servos. the Hitec is around 77 from DDM and the Rhino is 110.00 from DDM. you ll want to use your 5T servo horn and you will need the small servo adapter plate to install either of those 2 digital servos.
 
If I can recall correctly, some one once told me if run a analog servo and a digital servo together with a Spectrum, use must set your frame rate to the analog setting. Like I said I could be wrong with that, but now is the time to go out and purchase a good digital servo like Timmahh suggested and you won't regret it.
 
awww man i know what happened!!

a servo will not fry like that unless it got short circuited,DID YOU plug your battery pack in the wrong WAY AROUND????

check and see if you did,im almost 80 percent sure you did!!
 
actually DC2, with the newest round of 2.4 radios, if they are not properly set up to communicate in the correct MS speed, it will fry servos. Take Futaba for instance. they have a PPM mode (non Digital Servos) and another mode i forget the name of (HSD or similar) for digital servos. if you have a analog servo and are i HSD mode, it will fry the analog servo and vice verso, run a digital servo on the PPM mode, and the digital servo will go south, though over a much longer period of time. the more computerized our systems become, the more compatibility will need to be checked and verified or it could result in burnt servos and a wrecked rc.

I remember someone just recently had their steering servo burn out using a DS3R. they called HPI about the proplem, and accordeing to the poster, HPI did warrently the servo for them, but made sure the user KNEW what settings his radio is needed to not have this happen again. I think its Great that HPI is taking care of an obvious Spektrum Issue (issue being piss poor manual and the use of digital or analog servos)
 
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cool timmahh

i didnt think he would have all these issues with a rtr model,i blame the shop where he bought it for not having all this set up,still maybe a possibility of a simple mistake like plugging battery in wrong way,ididnt need to set up my dx30 when i starting using it,all i had to do was bind it to the reciever,i find it strange that these kind of adjustments were needed straight away,as you say though timmahh they are getting very technical..

dc2
 
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dc2 man said:
cool timmahh

i didnt think he would have all these issues with a rtr model,i blame the shop where he bought it for not having all this set up,still maybe a possibility of a simple mistake like plugging battery in wrong way,ididnt need to set up my dx30 when i starting using it,all i had to do was bind it to the reciever,i find it strange that these kind of adjustments were needed straight away,as you say though timmahh they are getting very technical..

dc2
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dc, this was an SS kit that I got from flea bay. Can't find a LHS out here that stocks any large scale stuff. I'm new enough to the sport that I didn't know you could not mix servo types. HPI was closed this Friday so I won't be able to talk to them and see if they will warranty the servo. In any case I have a new Hitec Digital on the way so if they do I'll have a spare.
 
Timmahh said:
I remember someone just recently had their steering servo burn out using a DS3R. they called HPI about the proplem, and accordeing to the poster, HPI did warrently the servo for them, but made sure the user KNEW what settings his radio is needed to not have this happen again. I think its Great that HPI is taking care of an obvious Spektrum Issue (issue being piss poor manual and the use of digital or analog servos)
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That is good to hear. It obviously is not a part problem but a user error. To warranty anyway is to care to keep a customer.:)

dc2 man said:
cool timmahh
i didnt think he would have all these issues with a rtr model,i blame the shop where he bought it for not having all this set up,still maybe a possibility of a simple mistake like plugging battery in wrong way,ididnt need to set up my dx30 when i starting using it,all i had to do was bind it to the reciever,i find it strange that these kind of adjustments were needed straight away,as you say though timmahh they are getting very technical..
dc2
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Our DX3's are different then the DX3R's. We do not have to worry about that stuff.:)
 
Timmahh said:
I think its Great that HPI is taking care of an obvious Spektrum Issue (issue being piss poor manual and the use of digital or analog servos)
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I'm not to sure it a Speky issue more then a user issue. Giving people a choice is a great idea but sometimes its bad due to user error and too many choices. It plainly shows you the set up on page 24 of the manual HERE

To allow the DX3R to be compatible with all types of servos (older analogs through the latest high response rate digitals), three frame rates areavailable.

5.5ms: Gives the fastest response rate, however, is only compatible with high performance digital servos.

11ms: Offer good response rates and is compatible with most digital and analog servos (this is the default position).

16.5ms: This is the least responsive rate and is needed for older analog servos.

Note: It’s always recommended that the fastest response rate that the servos can handle be used, as this gives the lowest latency/ fastest response. If the frame rate is incompatible with the servo, the servo will move erratically or in some cases not at all. If this occurs, it’s necessary to change the frame rate to the next highest value.
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Bigger the Better said:
I'm not to sure it a Speky issue more then a user issue. Giving people a choice is a great idea but sometimes its bad due to user error and too many choices. It plainly shows you the set up on page 24 of the manual HERE
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BTB, will it screw up the digital servo to run it at 11ms? I thought I was doing myself a favor by getting the "R" but maybe not.
 
cool timmahh and cheers btb for explaining that to me,i didnt realise that they had to be adjusted so much now the dx3r..

when i first got my beetle i ran it all day,but somepoint that same day i bought it in and had the battery out (why i don't know lol) propably just checking everything out in awe.... and i then put the battery pack in the wrong way around in to the connector and fried my reciever and throttle/steering servo..:scared::cursing::cursing: man that was a horrible experience all the same,two metal geared brand new hitek's and new reciever, i sent them pack to modelsport uk where i bought the fg at the time and they wouldnt cover them due to misuse! ....was a nightmare,had to wait over three weeks to run car again that time just after getting it whilst waiting for my new radio gear.

very easy mistake to make too.


thats why i thought you may have done something similar.
 
HawaiianRevo said:
BTB, will it screw up the digital servo to run it at 11ms? I thought I was doing myself a favor by getting the "R" but maybe not.
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No, that is the default to not screw up servos. If you are running a real good digital servo you can get faster response by going to the 5 setting. If you are concerned about which servos to use on what setting email Spektrum and they will respond with an answer. Or you can call them.

Click here for Spektrum Contact Info
 
Bigger the Better said:
No, that is the default to not screw up servos. If you are running a real good digital servo you can get faster response by going to the 5 setting. If you are concerned about which servos to use on what setting email Spektrum and they will respond with an answer. Or you can call them.

Click here for Spektrum Contact Info
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BTB, thanks for the help!
 
Update

Well I got a hold of HPI customer service this morning. They asked a couple of questions and then said they would send me a new servo. The whole conversation took less that five minutes. Sure is nice to deal with folks who back their product.:D
 
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