Noisy Vortech DrySide FIX!!

[CJO]

Post 41:

just finished taking mine apart(mp10). it seems that both bearings are the 607 bearing but im going to head to the bearing store tomorrow and see what they have. I also googled the part number and it would seem R/C bearing are also the same size and the hobbie town in my neak of the woods carries the novarossi ceramic bearings so if i cant find the standard bearings i might go ahead and get the ceramics. After i finsish this completely ill post the how to but its really just the same as the mp40 only difference is that the base plate that mounts to the glass is actually glued on instead of screwed.

Post 48:

i finished it it ended up being a 687zz bearing for the mp10. ill post the pictures as soon as i upload it.

CJ

 

[deepee33]

i concure the above -

687zz for both front and back bearings.

i swapped them , now i am back on track with the mp10 happy again

i'll reiterate that you have to be super careful taking them of not to damage the
middle magnet as its fairly fragile.

there will still be i guess another break in period with the new bearings so im hoping they will get even more quite. but at the moment they are not silent but 90% better than they were. for me thats enough for now. until ecotech come up with a silent housing , as i feel that it amplifies alot of the motor sound.
or i guess i would consider a completely submersed version with driver, a la tunze nano with controller.

 

[Stumped]

i concure the above -

687zz for both front and back bearings.

i swapped them , now i am back on track with the mp10 happy again

Thanks for the confirmation, I'm going to have to order some and give it a go I guess.

 

[BowieReefer84]

Hello, are these the bearings for MP10? Link http://www.amazon.com/S687ZZ-Bearing-7x14x5-Ceramic-Stainless/dp/B002BBHEBY

Mine is LOUD. I am getting a replacement wetside because the prop came apart from the magnet (my own fault), but if this does not work I will get new bearings I guess....

Thanks

 

[deepee33]

yes that looks to be the right bearings.

 

[MrGone]

haha nice! NTN makes the throw out bearings for a lot of clutches, I got a kick out of that.

 

[Flazky]

if somebody could post a video on youtube of the noise difference, that would be awesome!

 

[kcress]

I asked because I think there is room for improvement over the stock NMB ones. But i'm no expert in bearings.

My vortechs are perfectly fine. They aren't dead silent, but maybe there is a compatible bearing out there that's better? less noise, less resistants and last longer? Maybe someone that knows bearing can help.

Thanks.

There are about five grades of bearings. The higher the grade the more round and accurate the bearings. The more round and accurate the quieter. So if you want the most quiet result you want to buy the $30~40 dollar bearings not the flea bay $4 ones. However you may be wasting your money in the big scheme as the noise difference between the cheapo and deluxe bearing may be completely swallowed up by the dry side or other tank noises.


Very Nice write up dahenley.

 

[wieselsport]

I cant seem to find the 698 bearings at grainger or some other online places.

Anyone else have better luck?

 

[reefnut guy]

bearing fix

bearing fix

I have a newer mp40 and it also make a considerable amount of noise. Does anyone know if the bearing sizes remain the same in newer units? Or what is the newest vortech (mp40) thats been fixed.

 

[dahenley]

Anyone else try this?
just curious as to everyones success?

 

[Dino]

Anybody have anymore info regarding the ceramic bearings? Just from reading through this thread got the feeling some were saying they were noisier than the steel ball bearings. I have an MP10 though and about the only 687zz bearings I can find are ceramic ball ones unless I buy a 10 bearing lot of cheaper ones but I'm not sure how good they are .

Might just have to try this if I can find some bearings, several months ago the bearings on my MP10 dry side started growling. It got so bad had to turn it down to even hear the TV over it. At that time I just replaced the whole dry side which is now starting to get noisier too. I got an extra dry side with junk bearings just collecting dust in the closet, might as well try and fix it.

 

[Sisterlimonpot]

I've been reading up on bearings and never knew there was so much that went into a bearing. I too have been reading mixed emotions about ceramic and wonder if it's even necessary, these motors aren't ran at high RPM's (rated at 24,000+ RPM max) and the thrust applied to them aren't that great either (maybe the known out of balance magnet). An ABEC rating of 5 would be more than enough for this application. So I'm leaning towards a stainless steel abec 5, or equivalent.

Cody, have you looked at Granger? I have one a couple miles away, I was going to call them tomorrow and see if they have them in stock. I also notice that some bearings don't have a rating other than the material it's made from, but for tolerances they don't specify, I saw that another way of rating that you may see are ISO (International Organization for Standardization) and DIN (German National Standards Organization) which are opposite than the ABEC rating which is the higher the number the tighter the tolerance, the other 2 (ISO and DIN) are the lower the number the tighter the tolerance.

I guess the question is at what point will spending the extra $$ for ceramic and/or more precise bearing tolerances be counterproductive for the vortech?

I think if the motor was balanced (specifically the magnet) then the tighter tolerances would make a huge difference but I foresee that because of the shimmy it's going to amplify the vibration and make things worse.

 

[Dino]

I've looked online (just right before my post up there^). They don't even list anything for 687zz bearings. Looked at McMaster-Carr too but they don't list anything for 7x14x5 bearings either.

About the only place I've really found them so far is here...
http://www.vxb.com/page/bearings/PROD/Kit8047

They have the expensive ceramic ones or some cheaper buggers that come in a 10 pack. Wondering if these might not be fine to use
http://www.vxb.com/page/bearings/PROD/kit762

I don't really wanna spend $60 on bearings only to find out they're noisier than the factory bearings on my dry side now. :lol:

 

[Sisterlimonpot]

Wow, those are expensive, you can definitely see the price jump from abec 5 to 7. after I call tomorrow, I will post some prices (if they have them).Here are some for under $12

 

[Dino]

Good find!

 

[Sisterlimonpot]

I contacted Granger and spoke with a representitive, out of the 3 bearings (MP40 7X19X6, 8X19X6 and MP10 7X14X5) they only had one in their inventory which was the 7X19X6 (607ZZ) for $6.72 each.They couldn't give me the specs on what the APEC/ISO rating was.
looks like unless you only need that bearing it's better to find a place that carries all of them.

Has anyone else performed this task?

 

[nemosworld]

mp10:
http://www.rc-bearings.com/catalog/product_info.php?products_id=1174

 

[friendlyAlien]

Now here is the question: Wouldn't a high quality bearing also use less electricity for the same flow? Or ... another way of asking: Wouldn't you not only get a quieter operation but also more flow?

I would be interested in what the differences are ... seems to me quieter is only one of the benefits of a higher quality bearing.

 

[Napi Napoli]

Does anyone have links on the best bearings for an mp40 please

Thanks