RE: EPA adjustment problem on Prism 7
It’s hard to offer a meaningful diagnosis over the internet. That said send in your old friend\TX in for a look see, it’s free and we’ll advise if we can offer any service (parts are scarce). Worst case is your out shipping cost in one direction (unless you want it back).
Posted on: 9/14/2009 10:40 PM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=9096305

RE: HS 5000 gyro problem/ ?
While it’s plausible you genuinely have a gyro problem I'd look real hard at the entire TX and helo’s mechanical setup first. The LHS is not always the best place for technical assistance. Is there anyone locally available that is well versed in helo setup, as another looking in can often realize something amiss in the TX/model specific setup. You did note that this was new radio setup for you. Is the Gyro and all new, please elaborate.
Posted on: 9/14/2009 10:34 PM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=9096280

RE: Multiplex servo 65086 , 65005
Those are some old servos and they were very good servos too; if memory serves me they are compatible with current TX/RX offerings. Simply insure you have them wired appropriately to your RX in play. MPX stuff typically shared JR’s servo connector layout.
Posted on: 9/14/2009 10:26 PM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=9096254

RE: WILL I NEED SHIELDING?
While shielding may improve "headroom" I'll go on record and suggest its [b]NOT[/b] common place. The key ingredient is heavy duty-quality power distribution components a robust power supply and proper installation techniques. If you elaborate on your model specific set-up I might be able to help identify a source for your shortcomings.
Posted on: 9/14/2009 10:15 PM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=9096214

RE: Help with a receiver?
Mixing two channels for aileron control and four servos is the preferred solution and typical of most GS birds. You'll have to discuss the limits of the Futaba RX with those in the know at Futaba, I suspect its all good. Be sure and utilize quality heavy duty servo extensions and or power distrubution components for best results.
Posted on: 9/14/2009 9:59 PM by Author "mglavin" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=9096172

RE: Slop in HS 7955TG out of the box ???
I'd look real hard at the linkage ratio and mechanical set-up. As Master Bob noted this is not uncommonly realized in the mechanical and linkage setup and is know fault of the servos gear-train backlash. You can easily confirm if the servo is the origin of the control linkage slop, install a stock arm and no linkage and see if you realize backlash with very-very slight forward-reverse motion manually applied via fingers. Do you really need 1.5" servo arms? How long are your control arms?
Posted on: 9/14/2009 9:53 PM by Author "mglavin" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=9096148

RE: help 3 hs-5645mg melted in my plane
It's unlikely IMO that the voltage with you specific battery pack is at fault, even with the elevated surface charge realized off charge... I'm not sure what would happen if the servo was plugged in backwards, I suspect nothing unless it's an Airtronics RX as the positive and negative leads are reversed. If the servo(s) worked correctly and later failed we can eliminate incorrect system wiring I suspect. Generally speaking high static loads, binding or poor electrical connections/components are the culprit for smoking the servos amplifier. That said servos fail, but three is unusual. What is the application or surface, all three on the same surface or? Failure modes were realized during setup? Individually failed or simultaneously we need more input to discuss problems.
Posted on: 6/11/2009 8:52 AM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=8843551

RE: help 3 hs-5645mg melted in my plane
Please provide some additional info on the failure modes, its unlikely that three servos failed in the same manner IMO. More likely than not something is amiss with the installation. Any chance of of miss-wiring the servos with regard to another OEM RX?
Posted on: 6/11/2009 12:51 AM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=8842978

RE: HS-81 on 6 Volts
The HS-81 is rated for 6.0V use, however as noted the surface voltage off charge is higher, worry not this has not been an issue for myself and many others over the years...
Posted on: 6/11/2009 12:46 AM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=8842972

RE: Why the odd size for screws on MG servos?
FWIW: Hitec does NOT recommend the use of any industry standard thread locking adhesives (typically realized as the Loctite brand and or others) on any servo gear-trains, especially Karbonite gear trains... We have simply seen way to many damaged servos with over zealous applications of the aforementioned thread lockers... That said most thread locker manufacturers offer stuff for small screws, which is more appropriate for the 2.6mm screws if you must. There are many other products that work very well for this use and or application. I use PFM, Shoe Goo or the like. Some use canopy glue, the secret is these products are pliable and are easy to break loose with the correct screwdriver and or tool.
Posted on: 6/11/2009 12:41 AM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=8842969

RE: Hitec 6965 Gear set Question, please help
Please contact Mike Mayberry at Hitec via his link in the Hitec Forum. Mike will provide an accurate answer on the inventory status. No, you cannot interchange any other servo gear trains with the Karbonite geared units to the best of my knoweledge. Regards, Michael
Posted on: 6/11/2009 12:26 AM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=8842949

RE: Engine thrust angle for BN Citabria?
"The tail is about 3/4" to the starboard side from center. With the fuse is just over 4' long at this stage, that's mabey a degree off" Are you suggesting the vertical fin is not in line with the datum line as viewed from a top view? If this is the case you’re suggesting the fin is 3/4" offset to the right, and is the fin inline with the datum line or at an angle front and aft respective of the datum line? Some aircraft design the vertical fin to actually be several degrees offset to compensate for P-factor in lieu of corrective thrust at the engine and or firewall. If the firewall is out of square and it’s in the direction of the anticipated side/down thrust requirements and or corrections it may have been built as such intentionally…
Posted on: 3/12/2009 7:02 PM by Author "mglavin" in the forum "Giant Scale Aircraft - General"
http://www.rcuniverse.com/forum/fb.asp?m=8571539

RE: Engine thrust angle for BN Citabria?
Thrust in either circumstance depends on several things, airfoil, thrust line realitive to center of gravity and more; p-factor is pimary for engine side thrust. There is NO magic number, just typical results that very with every model and power/prop combination. Side thrust compensates for P-factor while down thrust helps balance out the need to re-trim the model as a result of power/thrust changes. Start with two degrees down and side and design your engine mount and or a engine mounting plate to readily accept thrust change/revisions.
Posted on: 3/12/2009 6:45 PM by Author "mglavin" in the forum "Giant Scale Aircraft - General"
http://www.rcuniverse.com/forum/fb.asp?m=8565376

RE: Engine thrust angle for BN Citabria?
I don't know the offical thrust number for the Nosen Citabria, but my experience suggests 2-3 degrees would be a good starting point. That said after you fly the beast it's easy enough to determine if more or less is required...
Posted on: 3/10/2009 7:32 PM by Author "mglavin" in the forum "Giant Scale Aircraft - General"
http://www.rcuniverse.com/forum/fb.asp?m=8564333

RE: Lets talk servo resolution
Flyboy, If you have the Programmer take a look at what your actually realizing in pulse-width from the TX with your MAX settings... Should be around 600us either side.
Posted on: 10/8/2008 4:51 PM by Author "mglavin" in the forum "Giant Scale Aircraft - 3D & Aerobatic"
http://www.rcuniverse.com/forum/fb.asp?m=8030901

RE: Lets talk servo resolution
Use the TX to set-up the MAX desired travel for all surfaces, if it’s done with end-points this is the master setting for all mixes/flight modes/conditions. Once you set-up end-points [b]NEVER[/b] go here again as any changes hereafter will effect flight modes/conditions/mixes across the board this can be a real problem. Use the rates to realize the desired throws and or flight characteristics for each condition and or mode.. QQ 's 60* servo travel arc suggestion is required to realize the desired system resolution I noted above, more likely than not you'll need to relocate the servo arm on the servo output shaft for this to happen, it matters not where the arm is positioned with regard to the servo case as long as the servo rotates 60* in both directions with equal throws and there is NO binding. You don't even need the TX at this juncture to work out the correct arm positions. I use a 4" photo-copied protractor and a throw meter to get the mechanical set-up spot on and later employ the TX to set up the "master end-points" required to move the servo to the desired throw and surface neutral. In case I wasn't clear use the servo arm length, control arm height and pushrod length to master the mechanical set-up, leave the TX out of the picture at this time!
Posted on: 10/8/2008 10:31 AM by Author "mglavin" in the forum "Giant Scale Aircraft - 3D & Aerobatic"
http://www.rcuniverse.com/forum/fb.asp?m=8029876

RE: Lets talk servo resolution
All modern TX/RXs use a total bandwidth of 1200us/microseconds for the control signal loop, that’s 600us either side of center or 1200 finite control signal/steps (matters not if the TX is 512-1024 or whatever). In order to realize the full 1200us bandwidth, travel percentages/function rates or whatever there referred to adversely effect the TX control signal output. Not all TX’s are equal some at 100% travel offer MAX TX resolution while others are reduced to 80% or so. If you guys want to see what a difference the TX settings make, use Hitec’s Servo Programmer in the RX pair mode and you can actually see the control signal/pulse width range the servo and or RX is commanded to operate at in microseconds on the display. Use of the full 1200us range of the TX and or servo will provide the best resolution, matters not whom is the OEM. MAX TX throw and using the servos full travel ARC (120*) is best IMO. While resolution is paramount, equal travel volume presents a large problem on many model specific set-ups, some are worse than others. Here is what happens; with equal travel percentages at the TX we realize unequal surface throw or deflection at the model. The reasons are generally a byproduct of the control linkage geometry and improper mechanical and TX setups. These anomalies cause the model to react differently due to the unequal control throw realized of equal throw at the TX sticks. Or in laymen’s terms the model maybe mushy in one direction and sensitive or fast in the latter. It’s pretty easy to realize these short comings with a throw meter. If you correct the throws with the TX you actually create problems, believe it or not!
Posted on: 10/7/2008 9:21 PM by Author "mglavin" in the forum "Giant Scale Aircraft - 3D & Aerobatic"
http://www.rcuniverse.com/forum/fb.asp?m=8028495

READ THIS: Hitec Support Forum User Guidlines
[B]All support forums work a little differently in that the question being asked is only answered by a representative of the company, not other members. [/B] If you want to hear opinions from fellow RCU members post it in the proper discussion forum. If you have a question, need help with a part or problem and need to talk to a company representative, this is the place. If you are a member and have answers to a question being ask in the support forums, send the person an email or private message. If you are a support forum host or company representative, keep the information to support related topics only. Please refrain from promotional material as defined in the Community Policies New questions must be posted in a new topic, not added to an existing topic. Post are subject to removal if they do not meet guideline and policy requirements.
Posted on: 5/20/2008 11:47 AM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=2603615

RE: Eclipse 7 question
The Eclipse QPCM TX is capable of working with nearly any PPM RX, single or dual conversion as well as specifically with Hitec’s QPCM RX’s. The only caveat’s are the RX channel band/frequency must match that of the TX. QPCM like other PCM equipment is manufacturer specific, you cannot mix equipment brands. A Hitec QPCM RX is the only RX that will work in the QPCM mode. The TX is programmed to work with either PPM or QPCM modulation and the appropriate modulation shift for the PPM RX in play. The TX frequency module matters not, it will work in either modulation scheme.
Posted on: 4/17/2008 11:36 PM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=7387831

RE: I have several new erratic acting Hitec receivers, HELP ME PLEASE??
The vary nature of auto shift RX's requires them to interpret the TX signal (negative and or positive shift) and work accordingly. This simply means the RX on power up listens/looks for the strongest signal on the appropriate frequency and sets itself to work therein. If you power the TX after the fact, the RX has been surfing so to speak and may not lock-in to your TX… Standard RX's are dumb so to speak and only work with a signal on the appropriate frequency and shift therefore on power up they’re already to work. In either circumstance (smart or dumb RX’s) can and will wreak havoc on the flight system if not properly initialized (TX powered up and then RX), At some point in time someone coined a phrase for this anomaly known as “hard-over�. What happens is the servos power up without benefit of a control signal and move errantly at will typically travelling too extremes causing control system binding, gear-train and or motor and amplifier failures if left unattended.
Posted on: 4/17/2008 11:22 PM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=7387774

RE: H9 46% ultimate (8) 5645 on ailerons
The 5645's are metal geared sport digitals and work accordingly. If you’re looking for precession servo performance you'll have to step up to a 5900 series Hitec. While the 5645’s will work on the big Ultimate I’d recommend the 5955’s or similar. In any circumstance HEAVY duty quality gold-plated extensions, wyes, switches together with a robust power system are a must with minimal connectors/couplings. The arms are fine, but will be to short for MAXIMUM throws...
Posted on: 11/27/2007 9:09 AM by Author "mglavin" in the forum "Giant Scale Aircraft - General"
http://www.rcuniverse.com/forum/fb.asp?m=6680197

RE: WHAT EVER HAPPENED TO THE 70% EXTRA?
Nicely done... And only ten thousand for the engine, geez... Looks like it flew well with more than adequate power. [:D][:D][:D]
Posted on: 10/28/2007 10:50 AM by Author "mglavin" in the forum "Giant Scale Aircraft - 3D & Aerobatic"
http://www.rcuniverse.com/forum/fb.asp?m=6549068

RE: Hitec 5995/5955 issues
Michael, You should be OK, the initial problem with the minimal sync current experienced with Futaba PCM RX's has been worked through. What surface are driving three servos with a single control signal and how are the servos inter-connected?
Posted on: 7/24/2007 7:16 PM by Author "mglavin" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=6151715

RE: Evolution 26ccGT Piece of Junk
I'm going to close this thread down! It no longer serves any purpose IMO. Banter, innuendos and insidious posts are not desirable, please refrain from same. Remember gentlemen this forum is for the exchange of information. Since useful information no longer has precedence here the thread has served it purpose and then some.
Posted on: 7/11/2007 7:14 PM by Author "mglavin" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=6099579

RE: Multiplex Royal 9 EVO
Your Aerofly simulator may have a programming and or setup issue. Try the TX with a RX and servos and see what happens.
Posted on: 4/18/2007 5:36 PM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=5735961

RE: hitec 5955s servo arms?
Currenlty available servos and Airwild arms as well as others are not a problem, worry not....
Posted on: 4/18/2007 4:09 PM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=5735488

RE: Multiplex Royal 9 EVO
Have you tried to setup the TX with an actual model-RX-servos? More likely than not there is a programming issue with the TX and or the simulator I suspect.
Posted on: 4/18/2007 4:08 PM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=5735480

RE: Output shaft spline count ?
Yes...
Posted on: 4/18/2007 4:06 PM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=5735465

RE: HELP CRASHED AGAIN WITH ROYAL EVO 7
As Xjet mentioned gremlins are hard to identify... Has the RX and crystal been serviced? Have you considered outside interference anomalies as the cause and effect for your radio/model problems? I’d suggest sending the equipment it Hitec Service unless you can find the root problem elsewhere, i.e. switches, batteries and the like. Have you used the same battery, RX, switch and RX with each model problem?
Posted on: 4/18/2007 4:05 PM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=5735464

RE: Cyclic Ring for Eclipse 7, Throttle Ratchet
As noted contact Hitec Service, I'm sure they'd be glad to send you a ratchet spring free of charge..
Posted on: 4/18/2007 3:58 PM by Author "mglavin" in the forum "Hitec/MultiPlex Radios- Ask Hitec Customer Service"
http://www.rcuniverse.com/forum/fb.asp?m=5735437