Leopard 3674 Bearings

[martin]

Fluid im 99% sure the bearings in the 3674 motor are the same bearings they use in the 40 series leopards, those are 5mm id x 16mm od x 5mm wide. These are standard size 625 2z or zz depending on manufacturers spec, chrome steel bearings with 2 metal shields. The 2z or zz is 2 metal shields, if you want ceramics their still a 625 bearing but with diff spec numbers.

[MassiveOverkill]

Thanks I succeded taking it apart in the meantime. Did a bit differently though. I held the motor in hand, but used a copper hammer to hit the shaft and it worked.
Next question: where do you get your replacement bearings from? And is the ceramic bearing hype worth the extra $$?

I'm sold on ceramic bearings. I've run my motor for a good 3 weeks in an overheated condition (early on it was hot enough that smoke was coming off the coils a few times) and the Boca Ceramics I used didn't skip a beat. This is on a 3300KV motor on 3S. The motor was even run with a vibration problem for a few runs as well.

I say their worth their weight in gold in my experience.

[jkr]

The bearrings are both 5x11x5mm.
I always change mine with ceramics

[martin]

Apologies yes it looks like its the older 36series motors that had 5 x 16 x 5mm, & the current ones now use 5 x 11 x 5mm.

[G-UNIT]

My leopard 3674 1900kv motor has 5x11x5mm bearings in it.
this was checked by a bearing store but they did not and could not get them so I stoped by my lhs which I should have done in the first place and found some from thunder tiger, part number pv0059.
the package says high peformance. these were in the heli dept.
I will install them tonight or tommorrow and let you know how they work.
the price was 6.99 for two.

[G-UNIT]

Well I installed the new bearing in the 3674 1900kv leopard motor and everything seems fine, the motor spins ok with little noise, not as quiet as the orginal but you can tell its not bad.
this was the first time doing this and it was a piece of cake.

[4343]

g-unit, I sunk my leopard 3674 1650 kv motor, I took out the bearings to replace, but lost a brass spacer, can you tell me what side the thicker ones goes and the 2 thin ones??

[4343]

I sunk my leopard 3674 1650 kv motor, I took out the bearings to replace, but lost a brass spacer, can you tell me what side the thicker ones goes and the 2 thin ones??