AeroPerfect MU-9000X USB once again available!
I received many inquiries regarding the availability of the MU-9000X USB. We were on hiatus for a few months while we moved to our new location and during that time it was not available. However I'm happy to report that the MU-9000X USB from Bell Electronic Technologies / AeroPerfect is once again available! This precision angle-measuring RC aircraft setup tool is back in stock! Please note our new phone number. Best regards, Marl Bell Bell Electronic Technologies 530-842-3150 www.AeroPerfect.com
Posted on: 3/16/2012 12:09 PM by Author "Wing-Ding" in the forum "Product Announcements & Manufacturer News"
http://www.rcuniverse.com/forum/fb.asp?m=11002907

RE: Engine Starting System from AeroPerfect!
Click on "Purchase Behind-The-Prop Starter" link from the Behind-The-Prop Starter page. You'll be taken here: http://www.aeroperfect.com/purchase.html Then click on: Behind-The-Prop Pricing is shown in red letters. Thanks for your comment.
Posted on: 2/20/2011 7:58 PM by Author "Wing-Ding" in the forum "Product Announcements & Manufacturer News"
http://www.rcuniverse.com/forum/fb.asp?m=10351640

Engine Starting System from AeroPerfect!
an engine from a position behind the propeller (behind a wing and next to the fuselage). The pilot simply
Posted on: 2/19/2011 12:03 AM by Author "Wing-Ding" in the forum "Product Announcements & Manufacturer News"
http://www.rcuniverse.com/forum/fb.asp?m=10347267

AeroPerfect's New Helicopter Setup Products
Bell Electronic Technologies New Products Description: The MU-9000X USB HELI from AeroPerfect is a precision angle measurement system. It is a three-axis angle measuring system which provides a measurement resolution of .01 degrees. The cable from the angle sensing unit plugs into a standard USB port of any laptop or desktop computer running Windows XP, Windows Vista or Windows 7. The new MU-9000X USB HELI is perfect for leveling your swashplate (perpendicular to the shaft in roll and pitch axes), setting cyclic swashplate deflection in roll & pitch axes, adjusting linkages, setting multiple-point collective pitch curves, flight modes and radio ATVs. AeroPerfect's new Universal Swashplate Leveler / Clamp is a precision fixturing device which provides an articulating platform onto which the MU-9000X USB HELI attaches. AeroPerfect's Universal Swashplate Leveler / Clamp attaches directly to your heli's swashplate and shaft and provides a solid and accurate mechanical interface for precision angular measurements to be made. [link=http://www.AeroPerfect.com]New Helicopter Setup Tools[/link]
Posted on: 3/9/2010 5:53 PM by Author "Wing-Ding" in the forum "Product Announcements & Manufacturer News"
http://www.rcuniverse.com/forum/fb.asp?m=9568019

RE: New Great Planes Revolver
Of course the larger plane is in the background. If it were in the front, it might look quite a bit larger.
Posted on: 11/12/2009 3:00 AM by Author "Wing-Ding" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9247905

RE: New Great Planes Revolver
Rowdog, Do you have any problems with the Saito being mounted inverted? I was having some problems with flooding and hydro-locking on my Saito .72 until I put a Cline regulator on mine. Thanks.
Posted on: 11/10/2009 6:13 PM by Author "Wing-Ding" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9244071

RE: New Great Planes Revolver
Thanks for the tips, everyone. I finally found the combination that works great for my Revolver! First, I moved the CG back another 5mm from where it was last week (was 124mm now 129mm) by relocating the battery pack to underneath the servo tray. Second, I programmed 12 degrees of spoileron which I have on a switch on my Spektrum DX-7. Flew her three times today and landings were pretty close to pure grease each time! Also, adding a touch of aileron differential seems to help in coming out of a turn. I'm really falling in love with this plane!
Posted on: 11/9/2009 2:19 AM by Author "Wing-Ding" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9239669

RE: New Great Planes Revolver
What's your method for landing without skipping? Also, I did a search of this thread and found one place where someone estimated their spoileron programmed at 10-15mm which figures out to be between 11.35 and 17.17 degrees. Also saw a recommendation of 35 degrees (seems like too much). What didn't you like about the spoilerons? Thanks.
Posted on: 11/8/2009 3:09 AM by Author "Wing-Ding" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9237146

RE: New Great Planes Revolver
Anyone using spoilerons to help prevent the skipping problem? If so, about how much are you using? Thanks.
Posted on: 11/8/2009 2:41 AM by Author "Wing-Ding" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9237122

RE: New Great Planes Revolver
Still trying to get this plane to land without having to land too hot. Questions: 1. How much spoileron are you using? 2. Do think think 129mm (~5.08 inches) is too tail heavy? Thanks. Marl
Posted on: 11/7/2009 10:00 PM by Author "Wing-Ding" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9236583

RE: New Great Planes Revolver
Great tips, N495RD. I removed the 420cc tank and replaced it with a 355cc tank. I also moved the tank back closer to the wing tube. I think that should help some with getting rid of some of the fuel weight that is forward of the CG.
Posted on: 10/26/2009 7:34 PM by Author "Wing-Ding" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9204175

RE: New Great Planes Revolver
Yes, but on a different plane. The Saito was on a GP Venus that met its demise (rolled out of a low knife-edge the wrong way). That's where the valve covers got messed up. The Venus was another hot-landing plane from GP! No nose-overs yet on the Revolver. Shouldn't have any once the CG is set sufficiently back.
Posted on: 10/26/2009 4:47 PM by Author "Wing-Ding" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9203739

RE: New Great Planes Revolver
Here are a few more pics...
Posted on: 10/26/2009 3:21 AM by Author "Wing-Ding" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9202442

RE: New Great Planes Revolver
) and also move it back to the wing tube. Landings were nerve racking. I had trouble with getting it to slow down
Posted on: 10/26/2009 3:18 AM by Author "Wing-Ding" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9202441

RE: Nitro Models Yak 52?
The pull - pull on your kit is different from the Yak ARF that I built. My kit had a metal cross bar which connects to both elevator halves. Pull - pull represents a design improvement because you don't get the torsional twist between the halves. Also it sounds like the fiberglass LG is another improvement. My landing gear will bend if you just look at it. Of course that creates an incentive for making perfect landings every time. From the picture I can't tell which servo arm to suggest, however for the cable, you'll want something that doesn't stretch. Kevlar is one possibility but it can fray if dragging over an edge. I prefer a small diameter, braided metal cable with a plastic sheath over it. Marl
Posted on: 11/4/2008 12:38 AM by Author "Wing-Ding" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=8112669

RE: Nitro Models Yak 52?
Still flying mine. I love it. I've got an O.S. 55 in it. I don't really 3D with it but I'm sure it would do fine with more control throw. I reinforced the horizontal stabilizer with hardwood and replaced all tail feather hinges with nylon pin hinges. I replaced the foam wheels with nice aftermarket ones and also replaced the wheel pants with ones from a crashed GP Venus. Have fun! Marl
Posted on: 11/1/2008 4:33 PM by Author "Wing-Ding" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=8105192

RE: Nitro Models Yak 52?
you might want to check the wing / stab incidence. Maybe engine thrust angle? Hope that helps. Marl
Posted on: 2/8/2008 2:15 AM by Author "Wing-Ding" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=7042435

RE: Welcome to Club SAITO !
Thanks, w8ye. Saito's are fun to work on. Who knows, maybe an opportunity to have fun and make a couple of bucks too? Marl
Posted on: 10/7/2007 7:29 PM by Author "Wing-Ding" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=6461539

RE: Welcome to Club SAITO !
Well I maidened my Wm Super Chipmunk today powered by my rebuilt Saito FA-91S (new bearings, connecting rod, piston ring). Wow, what a difference from before! It ran smooth, idled nicely with good transition and NO TERRIBLE NOISES coming from the motor! I had a bit of a scare when I brought it in and saw a lot of oil on and around the cowl. But then I realized the nut holding the muffler pipe to the head had loosened. I retightened it and flew two more times. Great engine. Thanks for the great advice! BTW, the Super Chipmunk lands like a trainer with flaps deployed and just a bit of down elevator mixed in. Marl
Posted on: 10/7/2007 7:01 PM by Author "Wing-Ding" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=6461449

RE: Welcome to Club SAITO !
This seems extremely unlikely, but.... could the valve timing be off? The Saito 91 that I'm currently rebuilding would not pull fuel into the carb even though I used an electric starter. Once I re-timed the valves, it started right up and ran fine (except for the horrible mechanical noises due to other problems). But if it was running ok recently, then I would think it impossible for the valve timing to change unless something in the engine physically broke. Oh- how 'bout this?: Is one of the valves stuck open or perhaps the valve clearance has changed a lot? That might make it behave that way- just a thought. Sorry if this is a dumb question, but how can you pressurize the tank with your hand crank if the vent line is connected to the muffler? Do you have a check valve installed?
Posted on: 10/5/2007 7:59 PM by Author "Wing-Ding" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=6454412

RE: Welcome to Club SAITO !
What's happening with the vent line?
Posted on: 10/5/2007 5:55 PM by Author "Wing-Ding" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=6454021

RE: Welcome to Club SAITO !
I mounted a Saito 72 inverted in one of my planes and had nothing but trouble. Hydro-locking, rough idle, etc. After I installed a Cline regulator it ran great! The tank was a tad too high in reference to the carb spraybar so the carb was getting too much fuel. The Saito 91 that I'm rebuilding was also mounted inverted using the Cline. Idle was around 2100 and tached up to around 9500 with good transition- just sounded horrible because it needed new bearings, piston ring, etc. Marl
Posted on: 10/4/2007 3:39 PM by Author "Wing-Ding" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=6449112

RE: Welcome to Club SAITO !
That makes sense to me that the chamfer would be oriented toward the crank (as you said). It looks like there is a small radius where the crank journal attaches to the counter weight and the chamfer accommodates that radius. I also noticed on my engine that the dot is on the same side as the chamfer.
Posted on: 10/3/2007 3:44 AM by Author "Wing-Ding" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=6443375

RE: Welcome to Club SAITO !
Thanks Boogermancan. I got the cam assembly reinstalled and valve timing set. Now just waiting for my new ring and connecting rod to show up. Maybe even have installed on my WM Super Chipmunk for the weekend. I meant to ask- I lost track of which way the connecting rod goes onto the shaft. There's a dot on one side. Do you know which way it's supposed to go? Thanks much. Marl
Posted on: 10/3/2007 2:35 AM by Author "Wing-Ding" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=6443289

RE: Welcome to Club SAITO !
Well I got the new bearings installed in the FA-91S! I used to rebuild cooling turbines for F14's many years ago so I thought I'd try something that we used to do for pressing turbine wheels onto shafts: I put the rear bearing on the crankshaft and stuck it in the refrigerator. I then put the housing in the oven at 275 for about twenty minutes. Took the shaft out of the fridge and then the housing out of the oven. The rear bearing literally fell into place. I held it there until everything was near thermal equilibrium. And Voila! Rear bearing installed! The front bearing wasn't so easy. I tried the same method, but the bearing only went half way before getting stuck. So I got a 9/16" socket that would contact only the outer race but not so large that it would get stuck in the housing front bearing bore. Heated the whole thing at 275 for about 35 minutes, and then ran it out to the garage. Since I don't have an arbor press, I used my drill press and socket to press the front bearing the rest of the way in. Fortunately, it didn't take much force. I hope I did everything right. The shaft spins very smoothly now (not like before when it was seriously grinding and actually stopping in places). I put the prop drive washer back on and everything spins smoothly, plus there doesn't seem to be any axial play. I'm assuming that's good. Well, what do you think for my first time? BTW, now that I've cleaned all the parts, what oil do you recommend when I reassemble? I'm thinking ARO (ATF). Thanks for all of the advice. Marl
Posted on: 10/2/2007 10:56 PM by Author "Wing-Ding" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=6442705

RE: Welcome to Club SAITO !
w8ye, The bearings for the FA-91S just arrived! I used my puller to remove the prop drive washer. Removed the cam assembly. What temperature should I set the oven at for bearing removal? Any tips you can provide at this point would be greatly appreciated. In a previous thread for a Saito 56, the oven temp was 275F and then the crankcase is banged against a board. Is it a similar procedure for the FA-91S? Also, how do I know which way to install the new bearings? Thanks! Marl
Posted on: 10/1/2007 7:41 PM by Author "Wing-Ding" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=6437315

RE: Welcome to Club SAITO !
blw, Your point is well taken. I'm not sure what I can do from here. I could post a formal complaint on RCU and try to get him to make it right, but then the transaction is in limbo waiting for, who knows how long, for a resolution. My time is valuable and I'm thinking I can learn from this encounter and learn how to change bearings on a Saito engine (So far I only know how to replace cylinder heads, push rods/guide tubes, adjust tappet clearance and set valve timing). I suppose I could revise my feedback comments a bit to address his "name calling". But it seems like it's his word against mine. I know for a fact the valve timing was seriously wrong but he tells everyone in the rebuttal it ran great. And I also know I didn't mess it up. But isn't it just a matter of which feedback (original or rebuttal) that is seen as being credible? And so when potential buyers "read between the lines", they can figure out who is telling the truth? Marl
Posted on: 10/1/2007 3:18 PM by Author "Wing-Ding" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=6436199

RE: Welcome to Club SAITO !
w8ye, Thanks. I may be posting if I get into trouble. BTW, and FWIW, the guy who sold me the engine posted an updated rebuttal and claimed to know nothing about the valve mis-timing or any of the other engine problems. He claimed it was I who "screwed it up". Caveat Emptor I'll be more careful next time :-) Marl
Posted on: 10/1/2007 12:05 AM by Author "Wing-Ding" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=6434275

RE: Welcome to Club SAITO !
w8ye, You're right about that. I think the feedback I gave was sufficient to let the community know that they should exercise caution when dealing with him. Nothing is accomplished by revealing his name. I read more on this forum about replacing bearings. I think I'll go for it. I have a prop hub puller already, so I ordered the bearings and ring. Maybe I can get this 91 running right after all. Sincere thanks for all your help. Marl
Posted on: 9/27/2007 12:35 PM by Author "Wing-Ding" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=6420540

RE: Welcome to Club SAITO !
Ed, No offense taken. As I mentioned previously, I couldn't get the engine started and I noticed that there didn't seem to be much compression. I immediately contacted him to ask about it and he told me- and I quote, "Hi Marl, that engine has never been out of the box,never seen fuel, bought it brand new of the shelf". I knew this wasn't true, so I emailed him back to make sure he knew which transaction I was talking about and included the RCU item reference number. I mentioned that I had not expected to be receiving a new engine. At that time I told him that I suspected the valve timing was off and asked if he knew if it had been disassembled. No response. Then when I confirmed the valve timing was wrong and subsequently got the FA-91S started, I emailed him again to let him know what I had found and that the engine he said was running great and so on, couldn't have run the way it was. No response. When I considered how mechanically noisy the engine was, the blue sealant that had gotten into everything and the amount of inconvenience he had put me through trying to get the engine started, and the fact that he wouldn't return my emails, I felt it was time to give him the feedback he deserved. However he attempted to block me from leaving feedback by marking my offer as having been "rejected". I contacted RCU about this and they explained to me that he's not allowed to do that since the transaction was actually completed. So RCU changed it so I could give him a feedback. So I gave him a "Poor" feedback along with a factual commentary about what I had discovered about the engine. He then wrote an incredibly caustic rebuttal accusing me of being an idiot and that I had screwed up a perfectly good engine, that I should stick to building plastic models, etc. RCU removed his rebuttal. Subsequently I PM'd him and tactfully said I'd give him the benefit of the doubt and that he might not have had first hand knowledge of the engine's condition (someone else told him it ran great and he believed them?) and that I would return the engine to him (at least it's running this time since I had fixed the valve timing problem) if he would refund my money and I would rescind my negative feedback. Haven't heard back from him yet. Marl
Posted on: 9/27/2007 4:14 AM by Author "Wing-Ding" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=6419413