RunRyder RC
 0  Topic Subscribe
WATCH
 1 page 452 views POST REPLY
HomeAircraftHelicopterEngines Plugs Mufflers Fuel › TT50 Shaft Play
05-04-2005 06:06 PM  13 years agoPost 1
Sipper

rrApprentice

Poole, Dorset, UK

My Posts: All  Forum  Topic

HGi Guys

I had the TT50 out of my Raptor 50 last weekend for some maintenace and noticed there was a couple of millimetres of play between the fan assembly and the motor casing, I can pull it backwards and forwards and although its only a few mm it fels like a whole lot more. Is it normal to have some play here?

Thanks

Sipper

My memory's not as sharp as it used to be. Also, my memory's not as sharp as it used to be.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-04-2005 07:34 PM  13 years agoPost 2
GroundPounder

rrVeteran

South Africa, Cape Town

My Posts: All  Forum  Topic

If you mean you can push/pull the crankshaft in/out, yeah, then a few mm's are way too much.
Try re-tightening the fan.
On four TT50's and one OS50, I haven't seen more than about 0.5 mm play.
Up to 1mm might only just be acceptable.

GroundPounder

PM  EMAIL  GALLERY  Attn:RR  Quote
05-04-2005 07:49 PM  13 years agoPost 3
Doug

rrElite Veteran

Port Saint Luice Florida....

My Posts: All  Forum  Topic

The thrust on all small engines is taken by the front bearing. The bearing inner race is clamped between the clutch and the "step" on the crank, effectively clamping the crank to the inner race. As a result, the only play is the axial clearance in the bearing which when new, will be on the order of .010" or less. On well used engines I would expect it to on the order of .015". So, something is not right, I would agree that the clutch is not tightened against the crank.

First member of Member of Bearings Anonymous

PM  EMAIL  GALLERY  Attn:RR  Quote
05-04-2005 11:07 PM  13 years agoPost 4
Sipper

rrApprentice

Poole, Dorset, UK

My Posts: All  Forum  Topic

Thanks chaps

A quick tweak of the fan nut and its all tight again. Would it be possible for any air to have got through and caused some lean problems last weekend?

Sipper

My memory's not as sharp as it used to be. Also, my memory's not as sharp as it used to be.

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 452 views POST REPLY
HomeAircraftHelicopterEngines Plugs Mufflers Fuel › TT50 Shaft Play
 Print TOPIC  Make Suggestion 

 0  Topic Subscribe

Sunday, June 24 - 3:27 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online