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Model Forum / Radio Controlled / Helicopters / May 2008Trex 450 Tail Drive
Does anyone know of a shaft tail rotor drive upgrade for a Trex 450. I have had the belt snap for the second time in about 6 months. It makes for a terrible landing. I don't mind the cost of the part's it is just such a pain to get the wreck back to the preferred setup before the crash. > Does anyone know of a shaft tail rotor drive upgrade for a Trex 450. I > have had the belt snap for the second time in about 6 months. It makes for > a terrible landing. I don't mind the cost of the part's it is just such a > pain to get the wreck back to the preferred setup before the crash. You're probably better off having a spare belt in your box and changing it at intervals timed to perfection.  SignatureBeav VN 750 Zed 1000 OMF# 19 I have a few spares but it is a real pain to change, it takes about an hour. You have to disassemble just about the entire helicopter from the connection of the boom. I always look at the belt and it looks fine. Any suggestions on how many hours of flying would be a reasonable time to replace it. >> Does anyone know of a shaft tail rotor drive upgrade for a Trex 450. I >> have had the belt snap for the second time in about 6 months. It makes [quoted text clipped - 4 lines] > You're probably better off having a spare belt in your box and changing it > at intervals timed to perfection. >I have a few spares but it is a real pain to change, it takes about an hour. >You have to disassemble just about the entire helicopter from the connection >of the boom. I always look at the belt and it looks fine. Any suggestions on >how many hours of flying would be a reasonable time to replace it. I have yet to break a belt in any of my 450's in several hundred flights and well over a dozen crashes.. I run 'em on the loose side and keep 'em lubed with silicone lubricant. All of mine have the metal drive pulleys. A lot of people are taking the top idler out of the tailcase for better belt life... > >I have a few spares but it is a real pain to change, it takes about an hour. > >You have to disassemble just about the entire helicopter from the connection [quoted text clipped - 5 lines] > and keep 'em lubed with silicone lubricant. All of mine have the > metal drive pulleys. By silicone lube do you mean the garden variety silicone spray in a pressure pack? Is this pretty much common to all heli's ie a good idea for a Blade400 also??? Oh yeah and how much how often?? Cheers >> >I have a few spares but it is a real pain to change, it takes about an > hour. [quoted text clipped - 18 lines] > > Cheers I would assume he's talking the spray can variety! Is it common to all heli's with a belt tail drive? Not by my experience. I've never heard of anyone lubing the tail drive belt and I've also found them to be very stout. I've never had one break and the only one's I've seen break were in "very" severe crashes. I've also never seen anything in the instructions for the birds I've owned that had tail drive belts about lubing them in any way. I would think it would tend to attract dirt and dust in the long run. I'm looking forward to hearing "other Kevin's" response to this! Fly Safe, Steve R. >>> >I have a few spares but it is a real pain to change, it takes about an >> hour. [quoted text clipped - 24 lines] > I've never heard of anyone lubing the tail drive belt and I've also found > them to be very stout. It was a fairly common practice on the Raptors to stop any "moise" interfering with the radio's. Same with the all plastic Shuttles. > I've never had one break and the only one's I've seen break were in "very" > severe crashes. I've never seen a belt snap either. > I've also never seen anything in the instructions for the birds I've owned > that had tail drive belts about lubing them in any way. I would think it > would tend to attract dirt and dust in the long run. I'm looking forward > to hearing "other Kevin's" response to this! I've sprayed many a belt, but not to avoid any issues other than the interference one I mentioned. AND I'm another Kev too. SignatureBeav VN 750 Zed 1000 OMF# 19 >>>>> I have a few spares but it is a real pain to change, it takes about an >>> hour. [quoted text clipped - 39 lines] > I've sprayed many a belt, but not to avoid any issues other than the > interference one I mentioned. AND I'm another Kev too. bloody hell us Kev's must out number the rest of the posters SignatureKevin R Reply address works >>>>>> I have a few spares but it is a real pain to change, it takes about >>>>>> an [quoted text clipped - 42 lines] >> > bloody hell us Kev's must out number the rest of the posters Well we certainly out perform 'em. SignatureBeav VN 750 Zed 1000 OMF# 19 >>>>>>> I have a few spares but it is a real pain to change, it takes about >>>>>>> an [quoted text clipped - 41 lines] > > Well we certainly out perform 'em. you've not seen me wobble round the sky with my Rex :-) SignatureKevin R Reply address works >>>>>>>> I have a few spares but it is a real pain to change, it takes about >>>>>>>> an [quoted text clipped - 44 lines] >> > you've not seen me wobble round the sky with my Rex :-) I don't think that's what he was referring to! :-o >>>> bloody hell us Kev's must out number the rest of the posters >>> [quoted text clipped - 3 lines] > > I don't think that's what he was referring to! :-o I don't know WHAT you're talking abut Steven. SignatureBeav VN 750 Zed 1000 OMF# 19 >I don't think that's what he was referring to! :-o Yeah, Beav's a legend in his own palm. :) >>>>>>>> I have a few spares but it is a real pain to change, it takes about >>>>>>>> an [quoted text clipped - 44 lines] >> > you've not seen me wobble round the sky with my Rex :-) And you've not seenme wobble around the bedroom trying to find somewhere to stuff my chopper either:) SignatureBeav VN 750 Zed 1000 OMF# 19 Let's try this again. The origional question has anyone ever seen a conversion kit to change a belt drive tail rotor (Trex 450) to a Shaft drive. Amaising how this thread went astray. > Let's try this again. The origional question has anyone ever seen a > conversion kit to change a belt drive tail rotor (Trex 450) to a Shaft > drive. Amaising how this thread went astray. No and that's probably why it went astray I have one of the an first ccpm XL450 its been decked twice but its still on its first belt and AFAIK its not a common problem to snap them SignatureKevin R Reply address works > >>>>> I have a few spares but it is a real pain to change, it takes about an > >>> hour. [quoted text clipped - 41 lines] > > > bloody hell us Kev's must out number the rest of the posters My middle name is Kevin :) > > bloody hell us Kev's must out number the rest of the posters > > My middle name is Kevin :) Well my name (or middle name) isn't Kevin and I'm pretty certain that Ronald (the Dutch outrunner motor guy) isn't a Kevin either. Still it seems the Kev's are taking over the establishment! -- Chris >> > bloody hell us Kev's must out number the rest of the posters >> [quoted text clipped - 4 lines] > (the Dutch outrunner motor guy) isn't a Kevin either. Still it seems the > Kev's are taking over the establishment! We always do, but generally, we keep quiet until it's a total fait accompli. SignatureBeav VN 750 Zed 1000 OMF# 19 > in >> >>> message news:tm7ou3his5c2ltkebj5f9t03edn4hlsn7g@4ax.com... [quoted text clipped - 54 lines] > > My middle name is Kevin :) There's just NO f.cking hope now. :-) SignatureBeav VN 750 Zed 1000 OMF# 19 >I would assume he's talking the spray can variety! Yep. >Is it common to all heli's with a belt tail drive? Not by my experience. >I've never heard of anyone lubing the tail drive belt and I've also found [quoted text clipped - 4 lines] >dust in the long run. I'm looking forward to hearing "other Kevin's" >response to this! With silicone, there's only a dry film left once the carrier evaporates. No funk on the belt at all. I don't lube any other points on the heli except for thrust and one-way bearings and those I use while lithium grease on. >By silicone lube do you mean the garden variety silicone spray in a pressure >pack? >Is this pretty much common to all heli's ie a good idea for a Blade400 >also??? >Oh yeah and how much how often?? I use food grade silicone lube. It has no petroleum products in it to degrade the belt. I lube every 10-12 flights or so. As for a "good idea" or not, that's generated a LOT of debates over the years. Try it and see if you like it. >I have a few spares but it is a real pain to change, it takes about an >hour. An hour playing with an unbroken heli is FAR more fun than two hours repairing a dead one and then farting about setting it up again. > You have to disassemble just about the entire helicopter from the > connection of the boom. I always look at the belt and it looks fine. Any > suggestions on how many hours of flying would be a reasonable time to > replace it. Well how many hours did your last two belts manage?. Know that and change the belt five minutes before it fails:-) I'd probably go for an hour or so shy of "time out" myself though. SignatureBeav VN 750 Zed 1000 OMF# 19 It's a bit like the timing belt on a car engine, can snap without warning leaving a hefty bill. > Does anyone know of a shaft tail rotor drive upgrade for a Trex 450. I > have had the belt snap for the second time in about 6 months. It makes for > a terrible landing. I don't mind the cost of the part's it is just such a > pain to get the wreck back to the preferred setup before the crash. >It's a bit like the timing belt on a car engine, can snap without warning >leaving a hefty bill. >> Does anyone know of a shaft tail rotor drive upgrade for a Trex 450. I >> have had the belt snap for the second time in about 6 months. It makes for >> a terrible landing. I don't mind the cost of the part's it is just such a >> pain to get the wreck back to the preferred setup before the crash. I have three 450s with over 400 flights between 'em all - over 200 of those on a heli that's been lawn-darted over a dozen times - and have *never* broken a belt. Make sure the belt is running down the center of the pulley (both ends) and set it up so it's *JUST* tight enough to stop the belt from slipping. (Hold the TR and turn the head. It should take a pretty good twist to get the belt to skip a tooth.) Also, this is an arguable point, but I've been lubing my belt with food grade silcone spray since day 1. Again, I have NEVER broken (or even damaged) a belt.. > I have three 450s with over 400 flights between 'em all - over 200 of > those on a heli that's been lawn-darted over a dozen times - and have [quoted text clipped - 8 lines] > food grade silcone spray since day 1. Again, I have NEVER broken (or > even damaged) a belt.. Hi, Care to name this brand of food grade silicon spray for me please ? --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 080509-0, 09/05/2008 Tested on: 10/05/2008 11:30:52 avast! - copyright (c) 1988-2008 ALWIL Software. http://www.avast.com >Care to name this brand of food grade silicon spray for me please ? I would if I remembered it. :) It comes in a green can and I got it from W. Grainger Industrial Supply. >set it up so it's *JUST* tight enough to stop the belt from >slipping. Does this advice also apply to larger models, such as 50 size or even 90 size? SignatureRoRo >Does this advice also apply to larger models, such as 50 size or even >90 size? That's the way *I* do all of my belt driven helis... YMMV. |
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