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HomeAircraftHelicopterCompass Knight 50 ODIN 90 › Upgrade start system
01-17-2009 09:40 PM  9 years agoPost 1
aussie_g

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Travelers Rest, South Carolina, USA

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can someone help me figure out if I have the old or new start system...

And what is the difference?

I have had issues with a tight clutch & squeeling when starting.
I have replaced all the bearings, balanced a new clutch & bell.
The only parts that are not new are the pinion & the start shaft.
I checked the straightness on the start shaft and it is very very close, maybe only .002" off, I am about to order a new shaft but if I am using the old style starter setup, I will order a whole new setup..

Gareth

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01-17-2009 10:31 PM  9 years agoPost 2
jiberjaber

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Essex, UK

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Not sure how old your starter shaft is, but check for wear where it contacts with the one way bearings.

Regards, Jason
My Beam Build Log http://www.rcheliaddict.co.uk/showthread.php?t=13112

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01-17-2009 10:44 PM  9 years agoPost 3
hornet dave

rrKey Veteran

Cedar Rapids, IA USA

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try to adjust the motor position downward half a mm or so, that reduced the squealing when starting on mine.

I got a fever! The only prescription is MORE 6HV

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01-17-2009 10:49 PM  9 years agoPost 4
jiberjaber

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Essex, UK

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Other thing to try is to run the engine up with the cltch stack bolts loose and let it find it's centre,

Regards, Jason
My Beam Build Log http://www.rcheliaddict.co.uk/showthread.php?t=13112

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01-17-2009 10:50 PM  9 years agoPost 5
aussie_g

rrVeteran

Travelers Rest, South Carolina, USA

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Other thing to try is to run the engine up with the cltch stack bolts loose and let it find it's centre
I had read that somewhere - worth a try.

Gareth

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01-18-2009 04:18 AM  9 years agoPost 6
petmotel

rrKey Veteran

DeKalb, IL.

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http://compassmodel.com/upgrades.php

There is a picture of the upgrade starter bearing on the page I linked to.

This unit uses a different pinion that uses a nut to secure the inner race of the pinion bearing to the top of the pinion gear.

It's easy to tell the difference. The normal stack has the cupped end of the machined bearing block showing from the top. The upgraded stack has an open end showing, with two threaded bolts retaining the top bearing.

Squealing sound is usually a result of the pinion spinning inside of the bearing race when the loctite lets go. Won't happen if the pinion is bolted to the bearing.

Note that if you buy the new start shaft assembly , you will also need to get the matching longer start shaft.

Jay

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01-18-2009 05:48 AM  9 years agoPost 7
Apples

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Brooklyn, New York

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petmotel:

What's the part # on "matching longer start shaft"?

Thanks

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01-18-2009 09:36 AM  9 years agoPost 8
jiberjaber

rrApprentice

Essex, UK

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The longer starter shaft is 02-0317N
The revised starter block in 02-0318N

Do you not get these revised parts in the Kit like we do in the UK ?

Regards, Jason
My Beam Build Log http://www.rcheliaddict.co.uk/showthread.php?t=13112

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01-18-2009 02:06 PM  9 years agoPost 9
aussie_g

rrVeteran

Travelers Rest, South Carolina, USA

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I have had so many knights, older kits & newr, but I have never compared the two start blocks.

I guessed that I had the older version, and it seems I was right.
I have ordered a new starter system block & the new longer shaft.

Gareth

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