Lumenier RB2205C-12 2400KV SKITZO Ceramic Bearing Motor
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Old Nov 08, 2012, 10:28 AM
420flyboy is offline
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Thinking your right on the 1400kv and bigger motor , better balance .
Here it is on 8s jetfan80 1680kv . Cg still too far forward , much better at 115mm.

habu 32 jetfan80 8s (6 min 52 sec)


Just skip to 1:27, lol
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Old Nov 08, 2012, 11:10 AM
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I have an issue with my tamjet mains. The angle of the spring connection seems to loose tension just about 1mm before the wheel has straightened all the way. It seems the spring is still tight but it's not pulling any more as the tensioner hole is now rotating perpendicular to the spring. Hope that makes sense. Anyway, the net effect is that they lack about 1mm to fully straighten and that causes them to bind sometimes with the wheel well when they retract. Annoying at the least if not harmful to the retract over time.

Any suggestions?
Old Nov 08, 2012, 12:35 PM
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Quote:
Originally Posted by mulicheng View Post
I have an issue with my tamjet mains. The angle of the spring connection seems to loose tension just about 1mm before the wheel has straightened all the way. It seems the spring is still tight but it's not pulling any more as the tensioner hole is now rotating perpendicular to the spring. Hope that makes sense. Anyway, the net effect is that they lack about 1mm to fully straighten and that causes them to bind sometimes with the wheel well when they retract. Annoying at the least if not harmful to the retract over time.

Any suggestions?
Any pics , here's what mine looks like .
Old Nov 08, 2012, 12:57 PM
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OK, pic 1.. how the strut ends up
pic 2, how I wish it would end up.

with the slight angle in pic1 the wheel hits the wheel well and the retract buzzes then gives up. Just ever so slightly but enough to catch.
Old Nov 08, 2012, 01:00 PM
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I think your spring has weakened , I would try to bend it slightly or replace. Mine pulls tight against the strut.
See how tight they are new.
Old Nov 08, 2012, 01:02 PM
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It seems all you need to do is replace the springs. I bet if you contact Tam with the pictures he will supply you with a new one to try. Maybe the plane was sitting on the wheels for a looong time?
Old Nov 08, 2012, 01:03 PM
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remove 1 or 2 coils from the spring if you want to correct that issue. easier said than done those springs are strong!
Old Nov 08, 2012, 01:04 PM
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Quote:
Originally Posted by mulicheng View Post
I have an issue with my tamjet mains. The angle of the spring connection seems to loose tension just about 1mm before the wheel has straightened all the way. It seems the spring is still tight but it's not pulling any more as the tensioner hole is now rotating perpendicular to the spring. Hope that makes sense. Anyway, the net effect is that they lack about 1mm to fully straighten and that causes them to bind sometimes with the wheel well when they retract. Annoying at the least if not harmful to the retract over time.

Any suggestions?
Dennis,
I think this is a known issue with Tam's Struts and he makes a maintenance kit for them.
Aaron
Old Nov 08, 2012, 01:04 PM
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Perhaps I just order the maintenance kit??

http://www.tamjets.com/original/prod...roducts_id=579
Old Nov 08, 2012, 01:05 PM
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Quote:
Originally Posted by Castel101 View Post
It seems all you need to do is replace the springs. I bet if you contact Tam with the pictures he will supply you with a new one to try. Maybe the plane was sitting on the wheels for a looong time?

+1
Tam will take care of you, but it would be quicker/easier to just remove a coil or two to get the tension you desire
Old Nov 08, 2012, 01:08 PM
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Originally Posted by mulicheng View Post
Perhaps I just order the maintenance kit??

http://www.tamjets.com/original/prod...roducts_id=579
always a good idea to have spare parts
Old Nov 08, 2012, 06:12 PM
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Quote:
Originally Posted by 420flyboy View Post
Thinking your right on the 1400kv and bigger motor , better balance .
Here it is on 8s jetfan80 1680kv . Cg still too far forward , much better at 115mm.

http://youtu.be/4vkkDPog9hw

Just skip to 1:27, lol
Hello gents,
Just a thought how about staying with your 1680 kv motor and run it on 10s?
Old Nov 08, 2012, 08:21 PM
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Originally Posted by pollster View Post
Hello gents,
Just a thought how about staying with your 1680 kv motor and run it on 10s?
I want more speed
Old Nov 08, 2012, 09:21 PM
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Here ya go.

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Old Nov 08, 2012, 11:30 PM
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thats really good Gary but you need to put your big boy pants on and do a 12s Mach Alloy

then you could play with the big boys

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