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Prop for an OS 1.08 on the CG Extra300

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Prop for an OS 1.08 on the CG Extra300

Old 01-09-2004, 07:16 PM
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Navy18
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Default Prop for an OS 1.08 on the CG Extra300

I am placing an OS 1.08 on my new Goldberg Extra300...... I want to get the best speed and vertical combination without burning out the engine. I like to fly at higher throttle settings and want to get the best combo for this engine. Any suggestions? Thanks.
Old 01-09-2004, 07:58 PM
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Azcat59
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Default RE: Prop for an OS 1.08 on the CG Extra300

A 15x8 would be my first choice. You might also want to try a 14x10 if you want a little more speed, or a 15x6 for more acceleration. All APC brand. I fly a GB Ultimate Bipe with the ASP 108 using a 14x10 and the performance is very good. We went to a 15x8 on my friend's Ultimate with an OS 108 to slow it down a little for him. Also works well.

Clair
Old 01-09-2004, 10:41 PM
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Navy18
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Default RE: Prop for an OS 1.08 on the CG Extra300

Thanks AZCAT..... I will try the 15x6 for the breakin and first few flights. I want some high speed passes as well as some acro practice; appreciate it.
Old 03-07-2004, 05:41 PM
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nitrous pete
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Default RE: Prop for an OS 1.08 on the CG Extra300

I also have a Ultimate GB, And a 108 os , i Use A 14-10 APC , Can u tell me what fuel to use in the 108, What %
I have tried 5 , and 20% , can't decide which to use, I also have 25%
pete
Old 03-08-2004, 01:51 AM
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3DFanatic
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Default RE: Prop for an OS 1.08 on the CG Extra300

I was using a 16x5 on mine. Turned 9K RPM
Old 03-08-2004, 02:21 AM
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RichLockyer
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Default RE: Prop for an OS 1.08 on the CG Extra300

Running a 16x6 here. I don't dare fly straight and level for more than a short run at full throttle, has excellent vertical.
I do run a Perry pump driven by case pressure.

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