Hey all,

Well after kicking the tires for a while a couple of buddies and I have decided to build a couple of planes for the 2011 SAM warbird season. Can anybody give me a measurement from the thrust washer to firewall on a typical YS120SC set up? I don't have a engine yet and I want to get started designing. I assume scratch built stuff is ok?

Looking forward to turning some laps with you guys next year.

Cheers

Red

This is hard to answer based upon the fact that depending upon what mount you use the measurement will be different. With that said maybe information attached will be of help. Also, these motors are getting very hard to come by, and the new 1.15 should rival the power at about 1/2 a pound lighter. I believe the 115 should be out in a month or so..... it's the same size as the .91-1.10. Good luck and hope to see you at the races.
Jimmy Skids

Thanks Jimmy, that definately helps. My buddy Steve and I are going to try to make it over to the race later this month to check it out.

Thanks again.

Red

Man that was a fast reply.... I added a little to my post.... regarding the 1.15 as an option.
Skids

Yeah it looks like that might work out better, so the 115 it is. I'm rescaling my drawings now.

Damn...looks like I'm going to be called out of town to work that weekend. It's not set in stone yet, hopefully I'll be able to make it.

Can anyone tell me if the SAM rules will remain unchanged for next season?

I'm not sure at this point. I worked on the re-write last year and was going to get with the CD's and see what changes for this year are in order. I doubt we would touch the meat of the rules, just maybe some minor tweeks. The wing area and displacement should not change at all. There has been some talk about allowing prototype fighters to compete, and I've heard some rumors regarding breakout times..... of course we hear the same rumors every year about the breakouts changing.

The procedure I used last year for the re-write was to draft the proposed changes prior to our planning meeting. At the planning meeting the CD's and the clubs BOD had discussion and voted on the changes. Once that was done the final draft was sent to the CD's and Board for final approval then posted. Last years re-write was the first major re-write in probably 5 years. I really hope that any changes done this year will be quick and easy.

If you want to PM me with a direct question I'll do my best to get an answer.

Jimmy Skids

Jimmy,

I was most concerned with the area/displacement table with the arrival of the YS115. You and Tommy have pretty much answered my questions, so I think I'm good to go. My drawings are about complete, so it's nearly time to fire up the laser and get building!

I actually put a lot of effort into those tables with the idea that there would be new motors coming and basically set up the tables in such a way that new motors would fall into place so that the new table wouldn't have to be changed. So far so good.
Skids

Thats good to know. I intially designed for 515 squares with the YS115, but have since enlarged my plane to 550 so that I can also race it in RCPRO and 120 Warbird races as well. Might as well get as much bang for the buck as possible I guess. The difference in the plane size is minor.

I hope to be cutting wood by Saturday. My delimma now is do I want a built up or molded fuelage?. I have a laser cutter so wood is no biggie, but I don't relish trying to make it nice and round, thats a PITA so I'm leaning towards fiberglass. I'll also have to build at least two planes for myself, and 4 other "kits" for my buddies so thats starting to make sense.

Anybody using the E-Flite electric retracts? Whats a typical plane weighing in at?

This is fun.

Most planes are in the 7 pound range give or take some. I have some of the new retracts, but haven't determined their future home. The struts are pretty beefy so I may have to go with robostruts to make them work well. I've raced with 550 squares for a few years now.... first with the YS 110fz, then the 110S, then with the 120SC. The plane has been a contender with every combination. I know Richard from YS has flown with the 115 at SAMS and the speeds were pretty impressive to say the least. But then again, Richard probably could make a slow stick look fast.

Skids