RE: FOCUS II ARF construction by-the-numbers

RE: FOCUS II ARF construction by-the-numbers (Full Version)

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mtcarey -> RE: FOCUS II ARF construction by-the-numbers (2/15/2008 2:32:17 AM)
Focus with webra 160 & MC carb

mtcarey -> RE: FOCUS II ARF construction by-the-numbers (3/18/2008 2:31:34 AM)
Header broke after eleven flights. Any ideas why?

lodomjr -> RE: FOCUS II ARF construction by-the-numbers (3/18/2008 3:18:09 AM)
Mtcarey, Was the pipe supported just behind the header and the end of the pipe too. Or was it supported only at the end and the header supported the front of the pipe? Larry

MarkGrabowski -> RE: FOCUS II ARF construction by-the-numbers (3/18/2008 3:21:04 AM)
Is your pipe mounted in one place or two? I suspect that if it's mounted in two spots, there isn't enough flex in the system (as your engine moves around on the Hyde mount). There's a lot of leverage on that header when you consider low long the whole setup really is... Just my two cents....

mtcarey -> RE: FOCUS II ARF construction by-the-numbers (3/18/2008 3:28:38 AM)
Their are 2 mounts. The front one consists of "o" rings held in place in a way which offers almost no resistance to the header movement The rear one is a 1/2" silicone tube.

lodomjr -> RE: FOCUS II ARF construction by-the-numbers (3/18/2008 3:44:12 AM)
Mtcarey, I ran the Webra 1.45 with the Greves pipe system. I got the plane, engine and all already together and I noticed that the header was made of steel. Your header to me looks like a Mueller header from the photos. I ran the OS 160 with the Mueller header and what we did to keep them from cracking is to cut the header in half or a portion of it to make two parts. Then hold everything together with two couplers. From the looks of the coupler you are using, you will not have any blowouts. Try cutting the next header in two parts and use two couplers and let the header support the front of the pipe. The header will hold it just fine and the extra coupler will give it more flexability so the header will not crack. Good luck Larry

mtcarey -> RE: FOCUS II ARF construction by-the-numbers (3/18/2008 3:48:35 AM)
Great! That confirms what I've been thinking. Im going to go this way as a solution...

lodomjr -> RE: FOCUS II ARF construction by-the-numbers (3/18/2008 4:00:11 AM)
Mtcarey, I'm not sure where you got your header. The Mueller headers are really nice and I know Horizon imports or carriers the Webra engines and parts including the pipes, headers and so forth. Where the steel header came from that I had, I don't know but it worked great. My engine had the regular two needle carb. and when I first got the thing it almost whipped me. I take pride in my abillities in tuning engines and this was tough. When I finally understood how she worked I actually got to run very well. Shoot, I had someone give me an almost new 1.45 cause they could not make it run. I could get to back flip it the first time every time after the first start of the day, and it ran very economical too. But that's the past and we've moved on to YS. Larry

mtcarey -> RE: FOCUS II ARF construction by-the-numbers (3/19/2008 1:44:25 PM)
Did this! Far out man! Can you dig it!!!

MarkGrabowski -> RE: FOCUS II ARF construction by-the-numbers (3/19/2008 7:52:48 PM)
Where did you get those nice steel hose clamps?

lodomjr -> RE: FOCUS II ARF construction by-the-numbers (3/19/2008 8:40:52 PM)
Mark, Most real good hardware stores will have those clamps. They are not expensive either. I purchased some at an Ace Hardware Store for about .50 each and they work great. Larry

mtcarey -> RE: FOCUS II ARF construction by-the-numbers (3/20/2008 2:15:03 AM)
Wide-Band Self-Tightening Spring Hose and Tube Clamps http://www.mcmaster.com/ Hose OD Width Thick. Qty. Per Pkg. 5/8" 37/64" 0.039" 10 7329K11 $3.93 21/32" 37/64" 0.033" 10 7329K12 3.37 3/4" 37/64" 0.051" 10 7329K13 5.59 25/32" 37/64" 0.051" 10 7329K14 5.64 15/16" 37/64" 0.051" 10 7329K15 6.15 1 1/16" 37/64" 0.063" 10 7329K16 7.56 1 21/32" 37/64" 0.075" 10 7329K17 11.32 1 31/32" 37/64" 0.079" 10 7329K18 13.74

mtcarey -> RE: FOCUS II ARF construction by-the-numbers (5/14/2008 5:32:59 PM)
Carbon Fiber landing gears!!! Where can I get some light weight gears for the Focus II?

Ryan Smith -> RE: FOCUS II ARF construction by-the-numbers (5/14/2008 10:17:57 PM)
Mark, Look into Bolly gear. ES made some superb gear legs, however the last I heard, they were retooling and are out of stock.

mtcarey -> RE: FOCUS II ARF construction by-the-numbers (5/15/2008 6:42:25 PM)
Thanks Ryan! Im looking at this gear. OK ? http://www.bolly.com.au/models/undercarts.html F3A-Wide 110 440 180 42 22 60 back straight Anyone. Any suggestions on making the focus lighter?

jlkonn -> RE: FOCUS II ARF construction by-the-numbers (5/15/2008 7:09:06 PM)
Call here: http://pac-rc.com/ Ask for Maureen. I got Bolly F3A Large gear for my Focus as well as a carbon wing tube from her. Saved a LOT of weight. I also changed wheel pants and did this for the tank: http://www.rcuniverse.com/forum/m_3133729/anchors_3134146/mpage_1/key_/anchor/tm.htm#3134146 Got rid of the 5 cell NiMh and now run a 2s LiPo. You may also want to consider removing all that from the front of your plane and get a Hyde mount with integrated nose ring. Good luck! JLK

mtcarey -> RE: FOCUS II ARF construction by-the-numbers (5/15/2008 7:55:38 PM)
Coke fuel tank! I like that. Is it holding up for you? I guess water bottles would work also??

jlkonn -> RE: FOCUS II ARF construction by-the-numbers (5/15/2008 8:11:58 PM)
I went back to a 24 oz Dubro for now but will run the pop bottle again. It holds up fine but will actually shrink a little bit from the CoolPower 30%. Easy to just screw another one on. And like the thread says, the round bottle feeds extremely well. My pix... That's not a stainless steel bar for wing tube...[X(] It's just how the light reflected off the carbon fiber. And yes, my cowl did yellow but Piedmont sent me a new one no charge.[:D] I REALLY like the Bolly gear. The gear and the wheel pants saved me over 6oz from stock. JLK

lodomjr -> RE: FOCUS II ARF construction by-the-numbers (9/20/2008 3:45:12 AM)
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lodomjr -> RE: FOCUS II ARF construction by-the-numbers (9/28/2008 2:33:17 AM)
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Ryan Smith -> RE: FOCUS II ARF construction by-the-numbers (9/28/2008 5:04:39 AM)
John, What wheelpants are those?

jlkonn -> RE: FOCUS II ARF construction by-the-numbers (10/2/2008 1:26:14 AM)
Ryan, Ooops! I just saw your post tonight. The pants are from Todd Schmidt, D5 Masters pilot and winner of this year's Concourse D'Elegance National Championship at the Nats. They are holding up great! JLK

Don Szczur -> RE: FOCUS II ARF construction by-the-numbers (10/6/2008 2:18:34 AM)
At our recent contest, Joseph bought a FOCUS II from Dr. Frank. A great setup and it flies great. Guerin built plane. However it had an instance of the wing tube just a little loose in the sockets was caused by the phenolic developing a bit of slop around the ply end piece. A few cuts, dab of epoxy and micro balloons, balsa pieces to re-cover and some filler to get it all back to new. Joseph wanted a custom color scheme, as usual. He is demonstrating the proper use of razor to lift the old covering off.

Don Szczur -> RE: FOCUS II ARF construction by-the-numbers (10/6/2008 2:23:49 AM)
And he also has developed a "bat" idea to fly around and scare the teenagers as they come up to the door on Halloween night. E-powered, eyes, nose and mouth, and the motor must be on the front. Its his initial design.

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