RunRyder RC
 5  Topic Subscribe
WATCH
 1 page 832 views
Scorpion Power Scorpion Power
HelicopterEngines Plugs Mufflers Fuel › Joined the Hyper rear bearing club
10-07-2005 07:26 AM  12 years agoPost 1
Nitrohuffer

rrKey Veteran

Bloomingburg,NY

My Posts: All  Forum  Topic

fun fun fun.

No lean

Wildcat Cy 30 1 gallon (most recent) and cp30 3 gallons

What a pain getting that bearing out. Guess I should have done the crank mod earlier. Doh!

PM  EMAIL  GALLERY  Attn:RR  Quote
10-07-2005 12:25 PM  12 years agoPost 2
skew

rrVeteran

KY

My Posts: All  Forum  Topic

I'm knocking on wood. I did the crank mod out of the box. So far I have ran 2 gal wildcat 30% heli & 5 gal 30%wildcat cy and still smooth as silk. Sorry to hear your down

PM  EMAIL  GALLERY  Attn:RR  Quote
10-07-2005 12:32 PM  12 years agoPost 3
ChrisMoore

rrApprentice

Bay Village, OH

My Posts: All  Forum  Topic

is it possible to buy an aftermarket replacement bearing that would be great from the start...to avoid any in-flight problems later?


Chris

PM  EMAIL  GALLERY  Attn:RR  Quote
10-07-2005 01:54 PM  12 years agoPost 4
Nitrohuffer

rrKey Veteran

Bloomingburg,NY

My Posts: All  Forum  Topic

Yes, http://www.bocabearings.com

They sell economy, high speed, stainless, and ceramic. The ceramic are the best but $75 for 2 bearings is a bit looney.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-07-2005 02:10 PM  12 years agoPost 5
poerQwa

rrVeteran

Rotterdam, The​Netherlands

My Posts: All  Forum  Topic

What a pain getting that bearing out.
Just put it in the oven. 10 minutes at about 150 degrees Celsius should do the trick.

Just use a wooden or rubber hammer to tap on the crankcase and "bob is your uncle"

Greetz,

Marc

PM  EMAIL  GALLERY  Attn:RR  Quote
10-07-2005 02:32 PM  12 years agoPost 6
George Matthews

rrElite Veteran

N.W. Ohio

My Posts: All  Forum  Topic

I have a Hyper 50 with 20 gallons run through it this season.
The only fuel I run is Wildcat CY 30% I have no crank mod and I don't burn the excess fuel off at the end of a flying session. Also I don't use after run oil unless I am storing the heli for a long period.
I have had no bearing issues with this engine.

George Matthews

PM  EMAIL  GALLERY  Attn:RR  Quote
10-07-2005 03:27 PM  12 years agoPost 7
wouter

rrApprentice

Belgium

My Posts: All  Forum  Topic

mine went after 4 gallons of CP15

it rusts like crazy...
hopefully the new one (SKF) will live a little longer

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
10-07-2005 04:50 PM  12 years agoPost 8
Jason WAI

rrVeteran

Hong Kong

My Posts: All  Forum  Topic


OS 50 Hyper Crankshaft Ball Bearing on Ebay

PM  EMAIL  GALLERY  Attn:RR  Quote
10-07-2005 05:07 PM  12 years agoPost 9
Wa11banger

rrElite Veteran

Huntsville, Al

My Posts: All  Forum  Topic

Can also get a set of ceramics from rc-bearings.com for a great price.. much cheaper price than boca and usually at your door in 4 days. Front and rear are like 26 bux

Rick

Proud member of the Quick UK, Duralite Flight Systems, V-Blade, & KBDD team

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-07-2005 08:29 PM  12 years agoPost 10
polaris

rrNovice

driggs idaho USA

My Posts: All  Forum  Topic

I agree on using RC- Bearings. The prices are very reasonable and they are fast on delivery. I have only just started using their bearings but all is well so far.

PM  EMAIL  Attn:RR  Quote
10-07-2005 09:23 PM  12 years agoPost 11
Gearhead

rrMaster

Vt

My Posts: All  Forum  Topic

I'm in the club,,,

I don't believe the crank mod has anything to do with how long the rear bearing will last, unless it has something to do with the balance, when I took my stock motor (Hyper) apart my bearing was full of oil,,,

and if your going to replace that rear bearing I suggest to use a SS raced bearing, chrome will rust too,,, there was a post whereby someone found his chrome raced ceramic bearing did rust..

Jim

PM  EMAIL  GALLERY  Attn:RR  Quote
10-07-2005 10:49 PM  12 years agoPost 12
skew

rrVeteran

KY

My Posts: All  Forum  Topic

the Wasp, my understanding is that the problem is without the crank mod the bearing gets too much oil and the balls hydroplane on the oil causing the extreme wear. Shaving off the web ring gives the oil a place to drain insted of being trapped in the race.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-08-2005 01:26 AM  12 years agoPost 13
Gearhead

rrMaster

Vt

My Posts: All  Forum  Topic

I can see that, the oil is over used..

Jim

PM  EMAIL  GALLERY  Attn:RR  Quote
10-09-2005 12:53 AM  12 years agoPost 14
Jason WAI

rrVeteran

Hong Kong

My Posts: All  Forum  Topic

chrome will rust too,,, there was a post whereby someone found his chrome raced ceramic bearing did rust..
normal bearings are usually steel / chrome caged, which will rust easily

Bearings with phenolic caged will last longer than those steel / chrome caged bearings.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-09-2005 03:02 AM  12 years agoPost 15
TMoore

rrMaster

Cookeville, TN

My Posts: All  Forum  Topic

You don't want CRES/SS bearings in a model airplane engine. They are too soft. You simply can't get CRES as hard as 52100 BB steel.

If you are worried about rust get an electric. Rust goes with the territory.

TM

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-09-2005 04:14 AM  12 years agoPost 16
Jason WAI

rrVeteran

Hong Kong

My Posts: All  Forum  Topic

phenolic caged rear bearing last longer that usual steel caged bearing.

OS 50 Hyper Crankshaft Ball Bearing on Ebay

PM  EMAIL  GALLERY  Attn:RR  Quote
10-09-2005 05:00 AM  12 years agoPost 17
Nitrohuffer

rrKey Veteran

Bloomingburg,NY

My Posts: All  Forum  Topic

Bearing inards

Wow. The tracks where the balls sit (is it the race?) has dig marks on both the outer and inner. I don't know, but I did the crank mod last night.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-09-2005 11:10 AM  12 years agoPost 18
DS 8717

rrProfessor

Here wishing i was​somewhere else

My Posts: All  Forum  Topic

The OS cages are plastic not phenolic,Phenolic is more expensive.
The balls try to weld themselves to the race and cause pitting,ceramic will not do this and seems to be the best fix for the OS 50. It doesnt seem to be a fuel related problem as it exsist with all brands of fuel.

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 832 views
Scorpion Power Scorpion Power
HelicopterEngines Plugs Mufflers Fuel › Joined the Hyper rear bearing club
 Print TOPIC  Make Suggestion 

 5  Topic Subscribe

Friday, November 17 - 5:14 pm - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online