RunRyder - Help! How to remove bearings on mixing arms?

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e-Hirobo SRB Quark - Lepton - XRB Coaxial > Help! How to remove bearings on mixing arms?

simingx
Heliman
Location: Singapore

Mine have developed some play in them, so I want to replace them.

I've tried everything in the book to get them out, and I have no idea whether it's the Loctite Hirobo uses or if the tolerances are so tight, or if I'm doing something wrong... they refuse to budge even a tiny bit...

Tried heating up the whole arm - nothing
Heated up the bearing with a soldering iron stuck in the hole - nothing
Attempted to slide an Xacto underneath the flange - nothing

I hope Hirobo doesn't expect us to replace the entire arm when just the bearing wears out...

Thanks in advance!

02-14-2008 02:33 PM

Blik
Senior Heliman
Location: Edmonton, Alberta, Canada

They definately are snug, you want to heat the mixing arm metal not the bearing. Put the complete unit in the freezer for 15+ mins then take a small torch and gently heat only the mixing arm and give the bearing a tap from the back and it should fall out.

Cheers

Blik

02-14-2008 03:41 PM

simingx
Heliman
Location: Singapore

Both bearings have flanges... and there's not enough space in between them to insert any sort of tool.

I tried using a torch to heat up just the bit that's around the bearing... the only thing that did was discolor the anodizing

I don't want to spend $100 on new control arms when $20 of bearings will make them work like new.

02-14-2008 03:57 PM

Tail_BoomStrike
Veteran
Location: Virginia Beach

Use a heat gun, not torch...... Have it suspended on a wire maybe, while doing it..... For a perion of 5-8 minute...... that should be enough to soften the adhesive....... When removing the bearing, hold the whole assembly with a rag...... It will be realy hot, but you have to do it while it's hot..... immediately push in the replacement bearing while it's hot......

02-14-2008 04:46 PM

Blik
Senior Heliman
Location: Edmonton, Alberta, Canada

LOL, I didn't mean use a blow torch

I always use a small lighter type torch because you can focus the heat to a specific area, otherwise you will heat up and expand the bearing also.

You should be able to use a small punch etc to hit the bearing from the opposite side. Even if you hit on the inner race the bearing is hooped anyways.

Cheers

Blik

02-14-2008 04:56 PM

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e-Hirobo SRB Quark - Lepton - XRB Coaxial > Help! How to remove bearings on mixing arms?

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