RE: Club 40 Racing Hangout  
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RE: Club 40 Racing Hangout - 3/30/2007 7:15:27 AM   
Fxrs_tim


 

Posts: 302
Joined: 4/4/2005
From: Austin, TX, USA
Status: offline 		Interesting discussion. I really like the idea of the cheap, entry-level racing series to bring new blood into the sport. I also agree that nominal changes, i.e. landing gear, cf pushrods, wheels (diameter and width needs to be addressed), and other "normal" type changes and/or repairs should be allowed. Speed enhancing mods should not be allowed as others have discussed - re-shaping, mods to control surface size, etc.. However, we also have an obligation to educate the newcomers to the sport about very simple things that make a plane fly better, specifically sealing hinge lines. There is a significant variation in the gap size of the stock planes, and allowing seals would (in my opinion) even the field. It's a CHEAP mod that anyone is capable of doing in a few minutes and probably doesn't add any straight-line speed. Yes, it will probably make your plane handle better, which is a good thing. If somebody has one that isn't sealed, offer to show them how! Heck, bring your iron and some covering scraps and do it for people before the races start.

Beginner class racing isn't only about winning. It's about teaching, helping, learning, and most of all ENJOYING the experience. One of my favorite plaques is from a sailplane contest where I got 2nd. The guy who beat me was the one who I helped fix his plane after a hard spot landing. His statement of, "Dude, I wouldn't have won without you" still comes to mind every time I see the plaque. I probably couldn't give you details on some of my 1st place ones b/c there aren't any really special memories attached to them, but that 2nd will always be special.

Tim

(in reply to Ken Erickson)
       Post #: 226

RE: Club 40 Racing Hangout - 3/30/2007 1:56:40 PM   
Jim Duda



Posts: 216
Joined: 4/10/2006
From: Austin, TX, USA
Status: offline 		I had a dream last night:

(Losing Pilot) "This isn't fair! Mrs. Outlaw won because she had an unfair advantage - nylon wing bolts, non-stock decals, cheek supports, sealed hinge gaps, carbon fiber pushrods, SAE (not metric) hardware, internal antenna, fuel proofed tank area, 5 cell receiver battery, 20 channel hi-ZOOT transmitter, AND SHE BALANCED HER PROP!!!"

(Course Official) "Sir, she beat you because you cut and had to fly 11 laps."

(in reply to Fxrs_tim)
       Post #: 227

RE: Club 40 Racing Hangout - 3/30/2007 2:15:37 PM   
daven



Posts: 6908
Joined: 12/7/2001
From: Andover, MN, USA
Status: offline 		When I get a chance, I'm going to attempt to split out the Mod's discussion from the Hangout discussion.

Edit Update:

Well, its just not possible for me to pull individual posts out of the discussion and move them into a new thread.

Soo,,, If you want to talk about Mods and Rules, please do it in the future thread. If you want to copy and repost your threads here over there, your welcome to do so. Lets keep this thread about the fun and excitement of Club 40 racing.

Thanks,


< Message edited by daven -- 3/30/2007 4:02:12 PM >

_____________________________

Dave Norman

klasskote.com
supertrc.com

(in reply to Jim Duda)
       Post #: 228

RE: Club 40 Racing Hangout - 4/2/2007 5:59:43 PM   
Jeff_edge540


 

Posts: 144
Joined: 9/24/2006
From: Austin, TX, USA
Status: offline 		[crickets chirping in the distance....]

(in reply to daven)
       Post #: 229

RE: Club 40 Racing Hangout - 4/4/2007 12:52:59 AM   
Jeff_edge540


 

Posts: 144
Joined: 9/24/2006
From: Austin, TX, USA
Status: offline 		Well, I got a chance today to break-in my GMS .40 engine.

I wasn't too excited when i opened the box. It looked like someone had returned this engine to Tower and they shipped it to me. All the bags had been opened and there was even a card to the top of an APC prop package in there as well.

Upon first inspection, everything looked fine. The carb was pretty rough feeling. It felt like there was sand in the barrell. You could move the throttle but it was rough. The engine casing was pretty good looking and the gold anadized head looked great. I was pleasently supprised to find that there were two o-rings in the carb. One in the engine block and one at the rim (normal place) of the carb. I was also happy to see a LARGE adjustment screw for the low-end. the high-end adjustment was firm and had a very tight seal. I turned the engine over by hand to see how the fit between piston and sleeve was and it was very tight. I didn't want to push it until I had good lubrication so I didn't try and turn it all the way over.

The fit in the Sky Raider II was tight. The crankcase is bigger than the TT40. I had to shave about a 16th from each motor mount to get it to fit the stock mounts. The muffler fit the cutouts perfectly and I had to only cut about 1/3" quarter-round out of the from left side for the high-end adjustment.

When I fueled it up for the first time I tried to prime it by placing my finger over the carb (full-throttle) and turning it over by hand a couple/three times and it was VERY difficult to do. I was afraid I was going to break the push-rod... I tried to start it with my Hobbico 90 starter and it wouldn't turn it over. I had to turn it over by hand about 10 times then get the starter spinning and jam it on the nose cone. The engine fired up and spit and sputtered until it got up to speed. I was running it REAL rich (not 4-stroking) and after about 30 sec. I shut it off. The head was VERY hot (hotter than I had ever felt on a r/c engine).

Well after about a gallon of fuel it is running quite nicely. I was using an APC 10x5 prop on Omega 10% fuel. I am getting 14,800 (little rich) on the top end. It is idling very smoothly (2400 rpm) and transitions beautifully. I don't notice any mid-throttle issues. I am very happy with this engine.

For $59, I'd say this is a great engine for the Club 40 class. If it wasn't for the really tight initial fit, I would say it wins over the TT40. We will see how it holds up.

(in reply to Jeff_edge540)
       Post #: 230

RE: Club 40 Racing Hangout - 4/4/2007 1:10:50 AM   
Jim Duda



Posts: 216
Joined: 4/10/2006
From: Austin, TX, USA
Status: offline 		Nice report, Jeff - Thanks! Are you using it Saturday? That will be the ultimate test: to see how well it hangs with the TTs.

Do you know the oil content in your fuel?

(in reply to Jeff_edge540)
       Post #: 231

RE: Club 40 Racing Hangout - 4/4/2007 1:20:54 AM   
Druce



Posts: 79
Joined: 1/6/2002
From: Edmonton, AB, CANADA
Status: offline 		You will find that the motor will be strong for a season and it will lost a bit. They don't seem to stay tight very long. But hey for $59 bucks you can't go wrong.!! The 47's are stronger yet.. I got two of the 40's and there aboout 5 years okd

(in reply to Jeff_edge540)
       Post #: 232

RE: Club 40 Racing Hangout - 4/4/2007 2:53:45 AM   
Jeff_edge540


 

Posts: 144
Joined: 9/24/2006
From: Austin, TX, USA
Status: offline 		Omega by Morgan is 18% oil (30% caster 70% Synthetic) I believe.

BTW: After my incident at ARCA - I realized that I should have at least two Raiders ready to go at an event (just in case)

< Message edited by Jeff_edge540 -- 4/4/2007 2:56:21 AM >

(in reply to Jim Duda)
       Post #: 233

RE: Club 40 Racing Hangout - 4/4/2007 2:58:13 AM   
Jeff_edge540


 

Posts: 144
Joined: 9/24/2006
From: Austin, TX, USA
Status: offline 		Druce - thanks for the incite. We always have new folks getting into the hobby with a 40 & a trainer. I'm sure I can find a good home for it at the end of the season

(in reply to Druce)
       Post #: 234

RE: Club 40 Racing Hangout - 4/5/2007 3:48:41 PM   
Ken Erickson



Posts: 307
Joined: 12/17/2005
From: Columbus, IN, USA
Status: offline 		Please,

To those who have not registered at any of our South-Central Texas Club 40 Races or the practice race at ARCA.

If you intend to be at the Race Saturday, April 7th, South of San Antonio, PM to me your name and AMA number. This will help speed up the paperwork.

Thank you,

Ken Erickson

(in reply to Jeff_edge540)
       Post #: 235

RE: Club 40 Racing Hangout - 4/6/2007 2:45:30 PM   
Jeff_edge540


 

Posts: 144
Joined: 9/24/2006
From: Austin, TX, USA
Status: offline 		Sky is looking a little gray for Sat over San Antonio... Is the race still on?

(in reply to Ken Erickson)
       Post #: 236

RE: Club 40 Racing Hangout - 4/6/2007 5:07:23 PM   
averen



Posts: 105
Joined: 8/31/2003
From: Austin, TX,
Status: offline 		I think the race is going to happen no matter what. I received an e-mail a couple of days ago saying that we will race between showers if need be.

Jared

_____________________________

Knowledge is Power, Power Corrupts, Study hard...BE EVIL!

(in reply to Jeff_edge540)
       Post #: 237

RE: Club 40 Racing Hangout - 4/6/2007 6:03:42 PM   
Ken Erickson



Posts: 307
Joined: 12/17/2005
From: Columbus, IN, USA
Status: offline 		Race in San Antonio postponed to April 14th!!

The committee has voted.

"Between showers" is one thing, but a high of 47 in SA in April with showers and misting tipped the scales.

Everything else is the same.

Thanks,

Ken Erickson

(in reply to averen)
       Post #: 238

RE: Club 40 Racing Hangout - 4/6/2007 10:09:55 PM   
antique opa


 

Posts: 138
Joined: 3/31/2007
From: seguin, TX, USA
Status: offline 		Ok Guys,
Went to Jim's today and bought the Mach II and LA 40. I'm going to assemble it all stock.
What prop's are the most commom. I have 10x6, 10x5 apc's. 15% nitro.
When breaking in the 40, Just do the normal abc break-in? Smaller prop?
Should be ready by the 14th.
Thanks, Mark

(in reply to Ken Erickson)
       Post #: 239

RE: Club 40 Racing Hangout - 4/6/2007 10:34:17 PM   
averen



Posts: 105
Joined: 8/31/2003
From: Austin, TX,
Status: offline 		Todd and I both have LAs and have "run the gamut" on props trying to find what works the best. We have tried everything from 10x4s - 10x6s as well as 9x6 - 9x8s and even a couple of 9.5x?. All of them seem to perform about the same. The 9s with higher pitch will get you more straight line speed, but you'll lose it in the corners. The 10s will hang better in the corners and will maintain speed better, but have a slightly slower straight line speed. Usually Todd would run one prop and I would try another, using Todd's plane as the "baseline." In all of our tests the difference between props was negligible. If Todd was on a 9" prop and I was using a 10" prop he would accelerate ahead of me on the straights, and I would come out ahead on the turns. After 5ish laps of this there was no real "winner" as far as the prop was concerned.

Personally I'm happiest with a 10x4 or a 10x5 (Todd prefers the smaller 9" props). Right now I'm running an 11x4 and I like it a lot, but it might be a little on the large size for the engine. I'm only getting about 11K rpm, but it will still hang with Todd's plane turning a 9x6 at over 13K. For the size the 11" is more efficient than the 10s and definitely more so than the 9s, but you sacrifice RPM to get there. The 9s slip a good amount compared to a 10 or 11" prop.

I did the "normal" break in procedure and it seemed to work fine. I get around 13k with a 10x5 on 15%.

Jared

< Message edited by averen -- 4/6/2007 10:36:16 PM >

_____________________________

Knowledge is Power, Power Corrupts, Study hard...BE EVIL!

(in reply to antique opa)