shane55

I have a Dle 20 which runs well but the sound when idling has got a bit noisier, presume the crankshaft bearings are wearing. I notice the same size bearings are available on alixpress for a fraction of the cost of actual dle bearings, Has anyone tried these?

LLRCFlyer

I have had an excellent experience buying from Boca Bearings when I needed to replace bearings in my 30+ plus year old Enya. They have bearings for most RC engines, including the DLE 20cc. You select the engine and they say which bearings will fit it. They have already done the matching/pairing homework for you. Try this URL

https://www.bocabearings.com/product...mFeatures=20CC

If that does not work, just google Boca Bearings and go through their web site. They offer a range of bearings from standard to ceramic. The standard two bearing set #ENK176 is $13.64.

shane55

Thanks but shipping and customs to Ireland from the US usually makes things prohibitively expensive thats why I was curious about the bearings on alixpress.

kmeyers

In the past all my gas engines that became noisey and slappy, the cause was the two connecting rod bearings (easy to check the rock at tdc).

Just another possibility. There are 4 bearings, 2 crank and 2 connecting rod.

LLRCFlyer

Sorry, I didn't think about customs... I was thinking of quality. I know the bearings I bought from Boca Bearings are very good quality... I don't know about Alixpress. I've heard they are a slow boat from China.

Truckracer

My Feedback: (19)

+1

I’ve rarely seen main bearing failures though it was more common in early production engines. Rod bearing failure is far more common and the wrist pin bearing seems to fail more often than the one on the crankpin. Crash damage changes all the rules. Have you had any prop
strikes or crashes?

shane55

Not on Dle's but I've had those roller pin bearing fail on crrc engines in the past. The engine is coming up on 50hrs running so I suppose I should change them out anyway. They can make an awful mess if they come apart during operation. Do the main crank bearings show any symptoms before failing?

shane55

Can the roller pin bearing on the crankshaft be replaced or does it come fixed to the crankshaft as it appears to be here

Truckracer

My Feedback: (19)

The rubber seals seem to fail before the bearings do allowing the grease to escape. I’ve never had a DLE main bearing fail but I have had other engines fail. Those were DA, Brison and FPE. The DA rear bearing just disintegrated, the Brison and FPE bearings leaked and got rough with time.