Lycoming 360's

Lycoming 360's

Postby smutny » Fri Feb 22, 2013 11:39 am

While I fully understand that the Twister was refined for the smaller Continentals, as someone with an interest in SARL and Reno racing, I'm wondering how many Twisters out there are going the (parallel valve) 360 route?

Steen has 320 specifications, but don't mention which of the 320's they based their figures on. Many 320's and 360's are within a couple pounds of each other.
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Re: Lycoming 360's

Postby Raceair » Fri Feb 22, 2013 2:14 pm

I dont think there are more than 3 or 4 Twisters under construction or restoration at this time. I would be surprised to find anyone right now who has plans to race one except Carl.
Cool thing about the SARL racing series, is they have a division for biplanes......If you could stuff enough fuel into one, a Twister could do well in SARL racing. If racing in the biplane pylon class at Reno, the small winged KT-85 is not legal, the bigger Sunday or Imperial needs to be built. However, I believe the Small winged KT-85 would be permitted in SARL competition.....Ed
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Re: Lycoming 360's

Postby smutny » Fri Feb 22, 2013 2:59 pm

I realize the population is small, but was curious.

I've flown my Wolf Pitts in one SARL race in 2011. Last year I organized the Washington race but didn't make any others as a participant. Plan to do the Idaho race this year in addition to organizing the Washington race again. The categories are:
BIPLANE UNLIMITED - Engine displacement greater than 1,000 cubic inches and can be turbo/super-charged (any forced-induction).
BIPLANE SPORT - Engine with a displacement of 1,000 cubic inches or less.
BIPLANE Blue - Engine displacement of 360 cubic inches or less, normally aspirated.
BIPLANE Red - Engine displacement of 320 cubic inches or less, normally aspirated.

Much fewer restrictions on air frame and engine than Reno. Most races are less that 200nm, so a ~20 gallon tank with a 360's fuel flow should suffice in a Twister, if a tank that size fits.
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Re: Lycoming 360's

Postby Raceair » Fri Feb 22, 2013 3:16 pm

Sounds Exciting. Did you get to see my Twister Project over at Auburn yet?....Ed
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Re: Lycoming 360's

Postby smutny » Fri Feb 22, 2013 3:36 pm

No, not yet. He has been out of town and just got back per his email. I'll bug him again in March.
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Re: Lycoming 360's

Postby carl99kt » Fri Feb 22, 2013 10:36 pm

Yes, as Ed stated, I have a HIO-360 with parallel valves waiting in the wings. As with most Knight Twisters, we calculated the weight and balance and welded up the engine mount to keep the c.g. in the range. Of course my Imperial is different from Steens in that the top wing is forward more than what the current plans show.

Carl
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Re: Lycoming 360's

Postby smutny » Sat Feb 23, 2013 9:24 am

Carl - I've been following your build posts on here, great work. What's the weight of your engine with it's accessories? I'm very interested in seeing more pictures when you have it hung on the airframe.

Where are you located?
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