RunRyder - changeing gear ratio

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Got Jet Fuel? Turbine Helicopters > changeing gear ratio

1275mini
Veteran
Location: Wirral North West U.K.

Guys some help please I need to change the gear ratio on my predator turbine what I need to know is how do I remove the gear from the bell housing without damaging the clutch housing I need to go down to a 10 teeth gear and 93 main !

Barry

04-01-2008 02:21 PM

coolice
Key Veteran
Location: Northamptonshire, England

Hey Barry,

I'm not even sure you can get the pinions on their own mate, I am looking through Centurys web site as I type.

To remove it you will need to use a mixture of heat and brute force, I think most pinions are screwed into the bell housing but retained using a good loctite.

In the UK it's £39.99 for a new clutch bell & pinion, with clutch liner fitted so while not cheap is reasonable value.
.

Ian Contessa
Align Robbe SchluterUK Sponsored Flier

04-05-2008 07:59 PM

HOMEPAGE

1275mini
Veteran
Location: Wirral North West U.K.

Thanks Ian they are on the usa site ! think i will just order the complete unit just need the get the long tube and shaft now ! it,s comeing on now !

Barry

04-05-2008 10:27 PM

coolice
Key Veteran
Location: Northamptonshire, England

Hello Mate,

Oh yeah, I never knew you could get just the pinions on their own.
They are certainly threaded into the bell though, dont know for sure but I wonder if they are left hand thread so as to tighten themselves under load?
Never taken one out myself, just change the whole bell assembly in the case of my Turbine.

Glad to hear your models coming along now though matey will be good to see some flying pictures.

If the weather holds up hopefully tomorrow I will be blowing the cob webs out of mine ready for Charmouth

.

Ian Contessa
Align Robbe SchluterUK Sponsored Flier

04-05-2008 10:41 PM

HOMEPAGE

Bell Bloke
Veteran
Location: England

Have taken quite a few out they are loctited in, when you put them back locktite with Tamia because it does'nt clog. They do tighten under load and they are not left handed.

To remove the pinion gear just put the pinion in a soft jawed vice put on a rubber glove for grip and unscrew the bell housing.

Why are you changing the ratio mini?

04-06-2008 10:37 AM

1275mini
Veteran
Location: Wirral North West U.K.

bigger main blades ! suited to the wren !

Barry

04-06-2008 03:06 PM

Bell Bloke
Veteran
Location: England

what size?

04-06-2008 10:30 PM

1275mini
Veteran
Location: Wirral North West U.K.

condor boom and nhp 800s

Barry

04-07-2008 05:59 AM

Bell Bloke
Veteran
Location: England

I have Condor boom and 860mm blades, no need for gear ratio change bud.