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Thunder Power RC . Mikado Modellhubschrauber . GrandRC

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CLASSIFIEDS - Vendors > The New Rave Electric R/C Helicopter
 
 
inkspot1967
rrProfessor
Location: cranston ri.

all i know is that heli looks wicked.....

Trex700e Ray N e- kit & "Fueled By Hate" Head
Next-D Rave Flybarless
Outrage Battery
04-13-2008 03:32 AM
 
 
lithiumstatic
Senior Heliman
Location: Tyler, Texas

The 177 main gear tooth count is really nice for those wanting to run a 4s setup. Keeps the pinion on the motor a little larger, less likely to strip the main gear out under heavy collective abuse. Nice.....
04-13-2008 03:33 AM
 
 
emag remrofni
Key Veteran
Location: Los Angeles California

Will this come with some components pre built like the head on the 450? I'm not a big fan of building heads

The best Torque Tube is a belt.
04-13-2008 04:22 AM
 
 
Ravenhyper50
Senior Heliman
Location: Ottawa

Quote 
All I know is that piro with the sudden stop was insane
Torque tube

and
Quote 
high quality 450

Is what is making me want this new 450 heli!

MSH Protos 500, SWIFT 550 Carbon, Swift 620SE, DX-7, JR servos
04-13-2008 04:55 AM
 
 
heli_headcase
Key Veteran
Location: Hovering around Atlanta

Will this heli come as a 100% kit and not assembled? Man, I hate having to disassemble, remove thread-lock and then have to reassemble all over again

Curtis; This looks very good. Will see it and you in LA next month.


HHC

So many heli's - too little time...
04-13-2008 04:56 AM
 
 
jindigo
New Heliman
Location: uk

Quote 
All I know is that piro with the sudden stop was insane

The Trex 450 can do the same with a belt drive. Sorry, just being real here...

With all the competition in the micro heli arena (or lack thereof depending on how you view Align), the success of this helicopter will depend on price and replacement parts cost as existing designs already fly incredibly well.

Jin
04-13-2008 06:10 AM
 
 
JJMAN
Senior Heliman
Location: Chesapeake, Virginia - USA

This all is great news....this heli is going to be a big hit, cant wait for it to come out, I'm selling my Trex 450 before it does.

***I Like Jet Noise***
04-13-2008 06:19 AM
 
 
bstock
Veteran
Location: Easton, MD.

Curtis... Thanks for answering back on the bearing question

Brent
04-13-2008 06:45 AM
HOMEPAGE  
 
 
heli_headcase
Key Veteran
Location: Hovering around Atlanta

Back to bearings...

I contend that the major cause of early bearing failure, eliminating incorrect installation as a reason, is the lack of or incorrect lubrication. Of the bearings that were of "poor quality" and failed early, how many of them were inspected for real grease or other lube inside the shields? Curtis, did you do a close inspection of this point when choosing a bearing supplier?

Most bearings I've seen supplied with model heli kits have nothing more than a light preservative oil inside. Hardly what's required for long life under real-world loading. If bearings that were properly greased were shown to wear out too early, then those were truly poor quality.

Thanks Curtis for your time to address this concern.


HHC

So many heli's - too little time...
04-13-2008 06:59 AM
 
 
maxxteezy
Senior Heliman
Location: texas

I sold my trex just in the nick of time. So when Mr. Youngblood decides the drop a 600 nitro, my trex 600 with be on the auction block as well. I've been following this thing for a while and it looked interesting even before I saw the youngblood name on it. And the TT is another plus. It would be nice to see the entire tailboom assembly come preassembled and ready to connect to the frame and tailcase in a "crash-kit" that was reasonably priced. Would make it alot more attractive to the lesser skilled, still crashing alot type pilots like me.
04-13-2008 08:46 AM
 
 
4cyclic
Senior Heliman
Location: Montreal, Can. and northern Vt

What is the weight of the rave ?, my 450se v2 is 760gr with the Scorpion 6 and a 156gr 3s 2100 Hyperion pack.

Fly non-stop till your brain fizzles !
04-13-2008 01:49 PM
 
 
HeliVIG
Expert Heliman
Location: Hearne, TX USA

As for the bearings, I did not track the lubrication issue with my bearing testing. I simply tested the bearings before they were installed to make sure they were smooth. Then installed them and confirmed they were smooth. Then flew them (hard) for a period of time and confirmed they were still smooth. I also confirmed that all the control axis worked properly and consistantly during all the testing. That indicated none of the bearings were tending to lock up or getting rough in flight. We then got a large sample of the bearings and checked that they consistently produced good bearings.

I also crash tested them and found they did not fail too easily during crashes. Obviously they do fail in certain crashes but not all of them.

I hope this helps,

P.S. I would be interested in a detailed study of how, and what type of, lubrication affects the load bearing and life of these small bearings. I certainly believe good lubrication helps.

Curtis
04-13-2008 04:54 PM
 
 
greg
Key Veteran
Location: Yorkville, IL

During my time as a student technician at a mechanical engineering research lab I gathered this general data. The higher the speed of the bearing the lower viscosity lubrication should be used. Some of the space shuttle bearings we were testing were actually hydrostatic meaning they floated on a thin layer of pressurized H2O. Some of our slower spinning stuff used light weight oil (10W). By slower spinning I mean 5 to 6 thousand rpms.
While working in the mining industry all of our big stuff and big bearings with low speeds and high loads got "greased". Usually a high temp bearing grease.
Although I do grease my bearings for my helicopters using the greaser, I do think this may be a bit of overkill. The only reason I can see using a heavy grease is its longevity. I think a thinner oil would probably work just as well although it would need to be reapplied more often.
Quote 

P.S. I would be interested in a detailed study of how, and what type of, lubrication affects the load bearing and life of these small bearings. I certainly believe good lubrication helps.

Hundreds of thesis' were wrote of this kind of stuff. It will be hard to find a consise study with our applications in mind.
04-13-2008 05:10 PM
HOMEPAGE  
 
 
lithiumstatic
Senior Heliman
Location: Tyler, Texas

Since we are on the subject of Bearings and it hasn't been brought up. Their is a product on the market called "The Greaser". It force presses grease into the bearing and really gets the lubrication where it needs to be. I know a few people that have bought one and swear by it. I don't own one but would like to make the purchase soon.

Disclaimer: I don't work for "The Greaser" and am in no way associated with there product. Just thought you guys would like to know about it.

EDIT*** greg beat me to it.. LOL!!!
04-13-2008 05:14 PM
 
 
lithiumstatic
Senior Heliman
Location: Tyler, Texas

Release date?
04-13-2008 05:37 PM
 
 
Aox
Senior Heliman
Location: Laguna Beach, CA

I don't know exactly how it translates, as the loads are a bit different, but I've spent some time in the competition and professional yoyoing community.

The best thing to do for spin time in a modern ball bearing yoyo is to take that yoyo out of the packaging and clean all the grease out of the bearing using a lighter fluid or mineral spirit soak. Then, you remove the bearing shields and use just a DROP of 3 in 1 oil, to prevent rust. Any additional grease or lubrication will increase friction, and not let the bearing run to it's potential.

Now, some of the higher end players suggest just to take your new bearing and put it into play. Over time, the extra lubrication/grease will make its way out of the bearing, and the performance will get near the point of a "cleaned" bearing. Some claim a "broken in" bearing like this is better than a "cleaned" bearing.

In modern "string tricking" yoyoing, you don't necessarily want a yoyo that will come back to your hand with a tug. You want an unresponsive yoyo that will allow you to put 2,3,4 layers of string into the gap. If you want an old school yoyo that is "Responsive", and comes back with a tug, you grease your bearings.

I guess what I'm trying to say is, bearings really don't need much grease. Just a nice drop of oil. At least for yoyos. Which spin. Much like Helis. Aww hell, I'm done.

http://vids.myspace.com/index.cfm?f...VideoID=1554289

-Aox
04-13-2008 05:54 PM
 
 
HeliVIG
Expert Heliman
Location: Hearne, TX USA

Guys,

I hesitate to promise a delivery date until I have every single part in my hand at full numbers. But it is pretty safe to say they will be out by June 08.

Curtis
04-13-2008 07:21 PM
 
 
lithiumstatic
Senior Heliman
Location: Tyler, Texas

Is there a way I can pre order? I want to get in on the first batch.
04-13-2008 07:27 PM
 
 
HeliVIG
Expert Heliman
Location: Hearne, TX USA

On Monday we will start taking pre-orders for the Rave kits. But we only take orders from shops, we do not do direct sales. So if you are interested in the Rave contact your favorite shops and let them know you want to put in an order.

Curtis
04-13-2008 07:53 PM
 
 
raptorheli2
Elite Veteran
Location: rip off britain and no changing it

do we have prices yet for the kits?

cheers


www.waterfoothelis.com
04-13-2008 07:54 PM
HOMEPAGE  
 
 
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