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Forum: Extreme Speed Prop Planes

12-31-2017, 09:06 AM

Replies: 16

90 jett LX full pipe stinger diameter

Views: 2,460

Posted By 1QwkSport2.5r

I checked the crank timing on my 56LX. From BDC...

I checked the crank timing on my 56LX. From BDC using a dial indicator to get absolute BDC, I got 36/66.

Just FWIW..

Forum: Extreme Speed Prop Planes

12-18-2017, 08:17 AM

Replies: 16

90 jett LX full pipe stinger diameter

Views: 2,460

Posted By 1QwkSport2.5r

I run my high rpm buggy and truck engines around...

I run my high rpm buggy and truck engines around 34/60 for the induction port. Not all that radical IMO. I haven’t had the time to do an airplane engine yet. I will this winter or upcoming spring...

Forum: Extreme Speed Prop Planes

12-15-2017, 03:18 AM

Replies: 16

90 jett LX full pipe stinger diameter

Views: 2,460

Posted By 1QwkSport2.5r

On engines that need a little help breathing,...

On engines that need a little help breathing, opening up the crank channel a bit helps. Just can’t get too thin around the inlet port. I’ll take a 9.5mm channel out to 10.2mm and be using a 9mm...

Forum: Extreme Speed Prop Planes

12-14-2017, 03:37 AM

Replies: 16

90 jett LX full pipe stinger diameter

Views: 2,460

Posted By 1QwkSport2.5r

I just couldn’t ever compare a ringed OS to an...

I just couldn’t ever compare a ringed OS to an AAC Jett. Regardless of what makes more power, piston seal is paramount. AAC trumps ringed any day in my book.

FWIW - I run boats and trucks too. I...

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