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Rotor arm pictures

 
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Clive J



Joined: 03 Nov 2007
Posts: 340
Location: UK
PostPosted: Tue Feb 12, 2008 11:40 pm    Post subject: Rotor arm pictures Reply with quote
On Yahoo Jabiru engine group and attached are some pictures of the arms
for the 2200 and 3300 as most folk won't have seen both types, The 3300
looks to have a lot more substantial fitting and from what's been posted
here and on Yahoo doesn't have the same issues at the 2200 (clip
failing, falling off, gluing recomendation).

For the 2200 the two plastic 'rivets' can be seen. I tried some cheap
ones once but with only one 'rivet' and the gear whine or whatever
causes the situation with the arms vibrating + falling off soon had the
metal plate loose.

Regards, Clive

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Lynn Matteson



Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan
PostPosted: Wed Feb 13, 2008 5:17 am    Post subject: Rotor arm pictures Reply with quote
I'm wondering why Jabiru makes a different rotor for the two engines.
The 3300 one looks a LOT more substantial in that the length of the
skirt is longer and thus grips the shaft a lot better, I'll bet.

I've been thinking of making my own rotors for awhile now, or at
least modify the skirts of existing ones. If my present method of
drilling holes in the skirts and using epoxy doesn't hold for at
least 200 hrs, I will.

When I was racing cars, I used a Vertex magneto, and their rotors had
3 point-tipped screws in the skirt. These pointed screws went into a
v-shaped groove in the shaft, and were safety wired in place. No lost
rotors at 6500 crank speed, but then it would have taken several 8-
second dragstrip runs to accumulate 200 hrs. : )

Lynn Matteson
Grass Lake, Michigan
Kitfox IV Speedster w/Jabiru 2200
flying w/470+ hrs
On Feb 13, 2008, at 2:36 AM, James, Clive R wrote:

Quote:
On Yahoo Jabiru engine group and attached are some pictures of the
arms
for the 2200 and 3300 as most folk won't have seen both types, The
3300
looks to have a lot more substantial fitting and from what's been
posted
here and on Yahoo doesn't have the same issues at the 2200 (clip
failing, falling off, gluing recomendation).

For the 2200 the two plastic 'rivets' can be seen. I tried some cheap
ones once but with only one 'rivet' and the gear whine or whatever
causes the situation with the arms vibrating + falling off soon had
the
metal plate loose.



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_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM
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