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Anyone had a problem like this with a motor? - 1/13/2010 2:58 PM   
cummins driver



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Status: offline 		Hey guys. Well, i recently got back into electric with an electric traxxas stampede. I bought one as a roller, put all my electronics on it, and then bought a 17t Reedy Radon 30,000rpm motor for it at the LHS for about $22. I bought the motor about 4 days ago. I had ran it a little and it was running great. Had good power, and I had it geared 12/87 so it had a ton of torque on the bottom end and topped out a little over 20mph id say.

So last night I was running it and noticed it started making a bad sound in reverse. I thought it might be the idler in the transmission giving out. I had already ordered a metal one of those though, so it was no big deal.

Well, I looked closer because it was really getting bad.... The front bushing in the motor is shot after 4 days and maybe 15 packs! Its so worn and loose that the pinion/spur skip in reverse because the way the motor rotates it was pushing the pinion away from the spur and causing it to skip and grind. Going forward it pulled the gears into one another and didnt have the problem. The mesh was perfect, motor never got hot, and wasnt even ran extended periods of time at once.

Any ideas why the bushing gave out so fast? I thought reedy was good stuff. Im calling associated later to see what they will do for me. Wish me luck!

Eric

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RE: Anyone had a problem like this with a motor? - 1/13/2010 3:25 PM   
john01374


 

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Status: offline 		That's really pretty odd. Did you lube the bushing before running it?

I'm not too familiar with that motor but I'm guessing it's rebuildable. Can you sap in bearings for the bushings?

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RE: Anyone had a problem like this with a motor? - 1/13/2010 4:49 PM   
burnineyes


 

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Status: offline 		The Radon is a pretty cheap RTR motor. Its the one that comes with Associated RTR models. Im really surprised it cost you $22 honestly. But anyways it should last longer than that. If you do not properly break in a motor with bushings its not uncommon for them to fail fairly quick. Oiling the bushings is a must at the very least every few runs.

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RE: Anyone had a problem like this with a motor? - 1/13/2010 5:00 PM   
cummins driver



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Status: offline 		I didnt oil it before i ran it, but i normally do oil my motors every so often, and i have never had a problem. I never had a problem with any of my trinity motors, and my stock original stinger which is 7 years old is still running. It is a cheap RTR motor, but it was great in my stampede. Maybe i can exchange it or get it warrantied.

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RE: Anyone had a problem like this with a motor? - 1/13/2010 5:06 PM   
R/C Lightweight


 

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Status: offline 		I have between 25-30 packs on my Radon motor without issues. I clean and oil it every 4 or 5 packs and use a comm stick to help keep things running smoothly. It's been a great motor for me and is very quick for a RTR mass-produced motor. It runs as strong as when I first broke it in. I prefer it over the Traxxas Titan 12T that was in my Slash. I would think about adding bearings to that motor, seeing as the front bushing is toast. It would require less maintainence, add a few thousand RPM, and result in a bit cooler cooler running motor due to the reduced friction. Good luck, and don't give up on that motor just yet!

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RE: Anyone had a problem like this with a motor? - 1/13/2010 5:15 PM   
cummins driver



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Status: offline 		Im with you, I loved the motor, and the power that it had. It was about perfect for my stampede, and had great performance for the price. I know its a cheap RTR motor, but it is rebuildable and performance is just about what i had hoped for. If I can exchange it at the hobby shop, I may do that, but if i have to send it to associated, its not going to be worth it because i could buy bearings and fix it myself probably for the cost of shipping it to california just to have them look at it and wait a month to get it back. I know that i didnt oil my traxxas stinger until i had ran it quite a bit, so i decided i would wait to oil this one until i had a few runs on it. If it really NEEDS to be oiled from the get go, then the instructions in the bag should say so.

I chose this motor over the venom fireball i looked at, and thought it would last better and be a better performer. Hopefully i can exchange it. I dont think my hobby shop has another one in stock though. If they are willing to let me exchange it for something else and they dont have another in stock, I may go ahead and pay the extra for another trinity motor. We'll see.

Eric

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RE: Anyone had a problem like this with a motor? - 1/13/2010 5:59 PM   
Jeremy Z



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Status: offline 		It sounds like maybe your gear mesh was set too tight, which caused premature wear. That or just really bad motor quality.

I see ball bearing motors in you future.

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RE: Anyone had a problem like this with a motor? - 1/13/2010 6:12 PM   
BigTb17


 

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Status: offline 		It is possible your Trinity motors had bearings instead of bushings, which is why they never had similar issues. It would probably have helped if you had oiled the bushings after every couple runs, but it may not have made a huge difference. What voltage are you running?

I haven't run that particular motor, but it's possible you were under geared. Someone else can chime in if I'm wrong, but 12/87 sounds low for a 17 turn (I could be wrong, it's been a while since I've done much with brushed motors). If it's geared too low it will be running high RPM almost constantly, which is hard on bushings because they will heat up. Just something else to look into.

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RE: Anyone had a problem like this with a motor? - 1/13/2010 6:19 PM   
Brainanator



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Status: offline 		I had the same thing happen with my second slash titan motor, made me sad

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RE: Anyone had a problem like this with a motor? - 1/13/2010 7:15 PM   
cummins driver



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Status: offline 		The mesh wasnt too tight. I thought about that, but i always made sure the mesh was good on it. It had a very slight amount of play, and wasnt binding or whining at all like a mesh that is too tight will do. I set it the same as with my other motors, and never had a problem with them. I think it must be a quality issue, or possibly just a lemon.

I think my trinity motors had bushings in them. Im almost positive they did, and i never had a problem with them. Im sure ball bearings would be much better. I was geared fairly low, but my top speed was 20mph or a touch higher just guessing, and to be honest most of the time i was playing around at lower speeds. The motor never got hot, so i dont see it being a heat/rpm problem. My 16t Trinity I had before was geared 13/87 and never had a problem even after using it for a few years. Also, I was only running 7.2 volts so i know that isnt the problem. I have an old motor with good bushings in it. I may just try another bushing in it and see where that gets me. I hate paying $10 for a ball bearing in a $22 motor. Im about to call the hobby shop and see what they say....



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RE: Anyone had a problem like this with a motor? - 1/13/2010 7:31 PM   
cummins driver



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Status: offline 		Good news!

Talked to the hobby shop and they told me to contact Reedy(team associated) which i figured would be the case. So then I called Reedy and talked to I think Bill? in the warranty department and told him my situation. Before i really even knew what he was doing, he took my adress, name, and phone number and told me they were sending me a new one. I was kind of shocked, and i asked him if this was a common problem. He said that it wasnt a common problem, but they are sending me a new one and dont even want my old one back, so im stoked!

Ill be trying to replace the bushing in the front of mine with another bushing i have today probably, so hopefully ill get this one working again, and have 2 good motors. if nothing else ill have spare parts for my new Radon motor.

So far im very happy with associated customer service. I will keep you guys updated with when i get the new one, and if i can get the old one running again. Im hoping so, because i was planning to run a little thursday night. Ill take pictures of the damage. Needless to say, this new motor will stay oiled from the get go, and i know ill be happy with it as long as this isnt a problem that i cant get rid of.

Eric

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RE: Anyone had a problem like this with a motor? - 1/13/2010 8:58 PM   
Jeremy Z



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Status: offline 		It is good to hear that Reedy & Associated have such good after-sale support. I'll keep that in mind when I'm buying motors in the future.

If the gear mesh wasn't too tight, I only have one more theory. Let me know what you think.

Bronze bushings are actually sintered, so that there are air bubbles in it. If the air bubbles are big enough, the bushing won't be strong. The reason they are sintered is so that they can hold some amount of oil and act as kind of a ghetto ball bearing.

Cleaning and oiling the exposed bushing every few runs is good to do, but it should be done 100% of the time on a new motor. Otherwise there is no oil, and it is pure friction. (the oil also acts to dissipate heat)

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RE: Anyone had a problem like this with a motor? - 1/13/2010 9:09 PM   
cummins driver



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Status: offline 		That very well could be the case. I was happy with their customer service for sure though, and i was very happy with the motor other than the bushing problem, which hopefully wont be a reocurrence. I agree bushings are a cheap way to make a motor that spins 30k rpm live, but it seems like they do pretty well most of the time, so hopefully it was a flaw in the bushing just as you stated, and it wont be a common problem. Ill definately be keeping it lubed a little better this go around. Im 99% sure the mesh was perfect on it. I never had that kind of problem before and im sure my mesh wasnt always dead on, especially in my younger years. I think the bushing was just a dud.

One thing to consider about the oiling though. Most all 12v air compressors, cordless drills, grinders, and other things of that nature have 550, 750, or 775+ sized motors, and you cant oil any of them without complete dissasembly, and most people never do. Drills also usually last a long time even when they are worked hard, so im not really contributing this problem to the fact that i didnt oil them right off the bat. Although, i will agree 100% that oiling them should be done. Oh well, im happy since they are sending me a new motor.

Eric

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RE: Anyone had a problem like this with a motor? - 1/13/2010 11:11 PM   
Brainanator



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Status: offline 		great to hear that! I love it when manufactures send you replacements!
I've gotten like 4 things from traxxas on warranty, and was very pleased every time

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RE: Anyone had a problem like this with a motor? - 1/13/2010 11:49 PM   
rebuilder



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Status: offline 		Another happy ending.........I have had lots of items warrantied in the past few years and I'm finding companies standing behind their products more so now than ever.

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RE: Anyone had a problem like this with a motor? - 1/14/2010 1:10 AM   
cummins driver



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Status: offline 		Yeah, its great that the manufacturers are doing this, it can only help the hobby. I was definately pleased with associated/reedy. They didnt hassle me at all. Just got my info and told me another one was on the way

In the mean time, I had a full charged venom 5000 i wanted to try out since it cut me short last night since it started having the problem in the middle of a pack. So, when i got home, I tore apart an old motor that was worn out anyways, and got the bushing out of the front of it.

I did find out that this reedy motor i have is NOT rebuildable(the brushes and springs are replaceable though). Oh well, I have heard that before I took off working on it, and it was a little aggrovating, but in about an hours time I had the old bushing out of it, and the new(used) bushing back in. The other bushing i put in was in good shape, and i oiled both sides with 3in1 oil real good before i stuck it back together. So i came out, and put 20 minutes of run time on it without a single problem. So, by the looks of it, im going to have 2 nice motors now if the bushings last in both of them Thats why i love having spare parts laying around. lol

Eric

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RE: Anyone had a problem like this with a motor? - 1/14/2010 9:40 AM   
srt10


 

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quote:

ORIGINAL: cummins driver

Yeah, its great that the manufacturers are doing this, it can only help the hobby. I was definately pleased with associated/reedy. They didnt hassle me at all. Just got my info and told me another one was on the way

In the mean time, I had a full charged venom 5000 i wanted to try out since it cut me short last night since it started having the problem in the middle of a pack. So, when i got home, I tore apart an old motor that was worn out anyways, and got the bushing out of the front of it.

I did find out that this reedy motor i have is NOT rebuildable(the brushes and springs are replaceable though). Oh well, I have heard that before I took off working on it, and it was a little aggrovating, but in about an hours time I had the old bushing out of it, and the new(used) bushing back in. The other bushing i put in was in good shape, and i oiled both sides with 3in1 oil real good before i stuck it back together. So i came out, and put 20 minutes of run time on it without a single problem. So, by the looks of it, im going to have 2 nice motors now if the bushings last in both of them Thats why i love having spare parts laying around. lol

Eric


Awesome!
that happend to me with one of my SV27s, the motor end bell came loose after the second run, I called the manufacture and they sent a new one in two days without questions..
the great thing is I use JB Weld on the original motor and now have a spare motor!
to me it sounds like your motor had a bad bushing from the start

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RE: Anyone had a problem like this with a motor? - 1/14/2010 4:43 PM   
R/C Lightweight


 

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quote:

ORIGINAL: cummins driver

Yeah, its great that the manufacturers are doing this, it can only help the hobby. I was definately pleased with associated/reedy. They didnt hassle me at all. Just got my info and told me another one was on the way

In the mean time, I had a full charged venom 5000 i wanted to try out since it cut me short last night since it started having the problem in the middle of a pack. So, when i got home, I tore apart an old motor that was worn out anyways, and got the bushing out of the front of it.

I did find out that this reedy motor i have is NOT rebuildable(the brushes and springs are replaceable though). Oh well, I have heard that before I took off working on it, and it was a little aggrovating, but in about an hours time I had the old bushing out of it, and the new(used) bushing back in. The other bushing i put in was in good shape, and i oiled both sides with 3in1 oil real good before i stuck it back together. So i came out, and put 20 minutes of run time on it without a single problem. So, by the looks of it, im going to have 2 nice motors now if the bushings last in both of them Thats why i love having spare parts laying around. lol

Eric

I couldn't agree more regarding AE customer service. In my opinion, they are top notch to deal with, as is Traxxas' customer service. I'm glad to hear they took care of you. It's people like that who keep this rather expensive hobby somewhat affordable at times. It stinks to think you have to shell out $25+ to replace a motor in a brand new RTR vehicle (happened to me with my Losi Mini Baja). It didn't even get through it's first pack when it inexplicably died on me for no reason whatsoever. Needless to say, I was irritated. Anyway, have a blast with that 'Pede, they are a hoot! I think that between your nitro Savage and electric Stampede, you have the 2 most durable RCs in their respective fields.

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RE: Anyone had a problem like this with a motor? - 1/14/2010 5:15 PM   
john01374


 

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quote:

ORIGINAL: cummins driver

Good news!

Talked to the hobby shop and they told me to contact Reedy(team associated) which i figured would be the case. So then I called Reedy and talked to I think Bill? in the warranty department and told him my situation. Before i really even knew what he was doing, he took my adress, name, and phone number and told me they were sending me a new one. I was kind of shocked, and i asked him if this was a common problem. He said that it wasnt a common problem, but they are sending me a new one and dont even want my old one back, so im stoked!

Ill be trying to replace the bushing in the front of mine with another bushing i have today probably, so hopefully ill get this one working again, and have 2 good motors. if nothing else ill have spare parts for my new Radon motor.

So far im very happy with associated customer service. I will keep you guys updated with when i get the new one, and if i can get the old one running again. Im hoping so, because i was planning to run a little thursday night. Ill take pictures of the damage. Needless to say, this new motor will stay oiled from the get go, and i know ill be happy with it as long as this isnt a problem that i cant get rid of.

Eric



This is great to hear but it does sound like they have heard of the problem before regardless of what they say. Normally a company requires you return the defective part unless they are aware of a wide spread issue. I'm glad they are helping you out. The last Reedy I had died an early death and I was basically told "too bad". but that was many many years ago.. It sounds like their customer service has come a long way..

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RE: Anyone had a problem like this with a motor? - 1/15/2010 12:01 AM   
monsterbrad


 

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Status: offline 		I had that same problem with my wifes slash motor the front bushing just went bad a got super sloppy to the point the motor would not run anymore.
Threw it out and got another 1

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RE: Anyone had a problem like this with a motor? - 1/22/2010 7:40 AM   
cummins driver



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Status: offline 		Yes, I think it must have been a problem since they just sent me another motor and didnt ask for the old one back. Suits me though

I got the new one in the mail today 8 days after talking with the rep at associated. I dont think thats too unreasonable at all. Not to mention my Reedy that lost the front bushing is still going strong with the used bushing that i put in it I have been keeping it oiled, but it has been running great. No problems at all yet. Im going to run it until it dies, then throw the new one in it. After this experience i would definately reccomend Reedy though. They treated me well on this deal with no hassle. Hopefully it isnt a recurring problem, but I cant complain with how they handled it.

Eric

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