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› Clutch usage in e-conversions?
01-26-2012 05:39 AM  6 years agoPost 1
dyoung87

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Hopkinsville, KY U.S.A

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Hello all!!
I notice some conversions use the stock clutch with their conversions while others omit the clutches altogether. Which is best? and why?
Thanks for your time!
Dale

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01-26-2012 05:50 AM  6 years agoPost 2
PJRono

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Minnesota, Ya!

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Neither is best, with out the clutch there is less parts and less weight. With the clutch the heli tends to spin up more scale like and the pinion-clutch can disengauge from the motor. It all depends on what you are trying to do.

If you skip me I can't play!

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01-28-2012 04:58 AM  6 years agoPost 3
rotorbrain

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san jose,ca. u.s.a

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That is true,you can select with or without clutch(direct drive).I've just convert my hirobo shuttle zts to ep version,I use a 550 bl motor w/
a century ep conversion kit.I still use my clutch , it works really well
it give you smooth run like scale during start.Almost like turbine sounds.During continuous run the motor is quiter unlike the direct drive
you can hear the gears are grinding.I like to keep it this way it, and I
think it reduces the load on the motor,when the motor stops,so what heli
your are converting to ep.Good luck.

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01-28-2012 05:47 AM  6 years agoPost 4
dyoung87

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Hopkinsville, KY U.S.A

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Sceadu, I'm gonna use the clutch also. Thanks for the replies guys!!!

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01-28-2012 01:58 PM  6 years agoPost 5
PJRono

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Minnesota, Ya!

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If you're building a pod and boom it's usually better to go without the clutch, it'll make the conversion easier. If you're building a scale heli then it may be worth the time and effort to use the clutch.

If you skip me I can't play!

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05-03-2012 09:33 PM  6 years agoPost 6
Copter Doctor

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Enterprise/ft.rucker ,al- home of army aviation

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all good points. i like the clutch because for one, i am a scale guy so the sound and appearance appeals to me for scale. i agree the clutchless way is simpler BUT, the clutched way offers one thing more, safety. if while carrying your heli or even working on it on the bench you bump the throttle or for some reason you have a throttle-up you have that margin of time before things start spinning (assuming you have the soft start engaged (and you would for the scale effect/sound) yeah i know, most people use the throttle hold to disarm but if you have a radio glitch problem that somehow affects throttle, the "hold" isnt gonna stop it
the only thing i dont like about the clutched setup and this is only on some machines is, some machines do not have a clutch with many options on pinion gear count.

drive a rotary, fly a rotorcraft

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05-04-2012 01:03 AM  6 years agoPost 7
PJRono

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Clutches can also break and slip.

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05-04-2012 01:04 AM  6 years agoPost 8
PJRono

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And liners wear out, needing replacement.

If you skip me I can't play!

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05-04-2012 03:56 AM  6 years agoPost 9
rotorbrain

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san jose,ca. u.s.a

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Clutch use @ e-conversion
Hi, there dyoung87, just to let you know that I use a clutch on my
EP converted shuttle hirobo.As of now I am still doing a test run
on my heli.I like it so far,due to smooth run ,sounds like turbine
during spool up.I'll be using this on my scale(Airwolf).Check out my gallery for my conversion.I used the same clutch with century ep
conversion kit for century hawk,It works well.I just removed the fan
and shroud because,the fan accidentally broke off during removal of
the old OS engine to the mount,But I will put it back once i have the
replacement.It will help to cool down the motor once i put the body on.Good Luck on your next project.

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05-04-2012 03:36 PM  6 years agoPost 10
Copter Doctor

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Enterprise/ft.rucker ,al- home of army aviation

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Clutches can also break and slip
And liners wear out, needing replacement
this is true, these items can fail but the rate that i have experienced failures of these components is such a small percentage, it doesnt affect my decisions to use a clutch in a scale bird.
now for 3d, i dont think i would put the effort in a clutch conversion if it wasnt for the safety issue

drive a rotary, fly a rotorcraft

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05-04-2012 03:38 PM  6 years agoPost 11
PJRono

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Minnesota, Ya!

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The problem with the clutch/liner is it's one more thing that you would have to rip apart the fuse to fix/replace that you wouldn't need to. Also added weight.

If you skip me I can't play!

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05-04-2012 03:52 PM  6 years agoPost 12
Copter Doctor

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Enterprise/ft.rucker ,al- home of army aviation

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agreed but its a small price to pay for that scale sound and spoolup realism in a scale machine. i have had several machines many yrs with tons of flight hours on them and have never had to replace a clutch or lining. the soft start spoolup with an elec motor takes it a lot easier on a clutch and liner than the sudden force of rpm that a stsrter administrates to the system when being started.

drive a rotary, fly a rotorcraft

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05-04-2012 04:16 PM  6 years agoPost 13
coptercptn

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Mesa AZ. USA

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Weight in a scaler shouldn't be an issue.. as far as "tearing apart" a fuse to fix/replace, that would indicate poor design...everything should be accessable for maintenance?... and yes the "cool" factor definitly makes the clutch worth the effort... after all what are we trying for in scale? "The most realistic effect overall" why not add sound to that dimension? and, for the record, my Huey has been flying for 3 yrs (23lbs w/clutch) and when I "tore" it apart this winter for maintenance..(and some upgrades) it looks like new...

Just my $.02

Home of the "Sea Cobra".....

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05-04-2012 11:53 PM  6 years agoPost 14
PJRono

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Minnesota, Ya!

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I'm not arguing it, just pointing out things to consider.
I too think the sound and realism is cool, but is that worth the extra hassle?
Some fuses just don't allow you the room to get in to do that kind of work short of pulling the entire mechanics out of it.
I'm in the process of reversing the one-way in my E-R90 so that the blades spin the "right" way and will also flip the tail rotor.
These things I see as more important.
I'm very happy with the "slow" spool up on the Castle ESCs if you pick the slowest setting she takes a good long while.
I've had clutches break just because they do, and liners wear every time you engage the clutch even though an electric is smoother.
For me it's just one less thing to worry about.

If you skip me I can't play!

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05-06-2012 05:04 PM  6 years agoPost 15
Copter Doctor

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Enterprise/ft.rucker ,al- home of army aviation

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I too think the sound and realism is cool, but is that worth the extra hassle?
in a word, yes
Some fuses just don't allow you the room to get in to do that kind of work short of pulling the entire mechanics out of it.
if you are going to do any kind of work to mechanics especially a conversion, you would want to pull the mechs, i couldnt see doing anything like that while the mechs are still in.
you make very good points as far as why bother, very good points and many of us who do scale are aware of the extra work and down sides to doing many things in the scale world. but anything you do to a scale helicopter to add realism is always worht the extra effort when the end result is what you are trying to accomplish. for example, you want to get the correct rotor direction and have the t/r on the correct side, there are some of us who wouldnt want to go thru that troouble because they dont think it is important enough or it may be too much trouble. i tried the reversed rotor direction and didnt like the way the heli felt because i wasnt used to it and switched it back. i will do it again on a future project tho. as for the tail flipping, i do that every time it requires it to have it on the correct side, thats more work than the rotor direction but more important to me
I'm very happy with the "slow" spool up on the Castle ESCs if you pick the slowest setting she takes a good long while
even the slowest setting on the esc still doesnt satisfy my quest for realism because wheni push the start button, you hear N1 spooling up a bit before the rotors start tunring and you cannot get that effect without a clutch.

drive a rotary, fly a rotorcraft

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05-06-2012 06:12 PM  6 years agoPost 16
PJRono

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Minnesota, Ya!

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I think it would also depend on if the heli is going to be an everyday flyer. I know many do not fly their scalers alot and they sit on a bench or table to be looked at and maybe hovered once in a while. My scale ships are flown, and I mean flown. Loops, rolls, flips while not scale are not uncommon in my birds. I like to hear the old guys in the back ground all chanting "That heli ain't sposed to do that!". It gets them all riled up, but after the flight they all say "that bird flys GREAT, good job!" with a huge smile on their faces.

If you skip me I can't play!

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05-07-2012 12:35 AM  6 years agoPost 17
coptercptn

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Mesa AZ. USA

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I personally wouldn't own a Heli (scale or otherwise) if youcouldn't fly it!! I fly all of mine as I don't "Own" a pod-n-boom. None "sit on the shelf, or..just get hovered."

But that's just me.. "Why build it if ya can't (or won't) fly it?" And, the more realistic it is.. the better I like it..

Home of the "Sea Cobra".....

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05-07-2012 02:55 AM  6 years agoPost 18
doorman

rrProfessor

Sherwood, Arkansas

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With Or Without????
For me it is +1 with Copter Doctor and coptercptn... if I have a choice, there will be a clutch in line... and I still do have an SDX pod and boom that I converted to e-power, and actually kept the clutch in it, since it was easier to use it..and keep the top bearing in play, if you take a look at the first page of the post:

https://rc.runryder.com/t541658p1/

You will see that it started in 2009..still the original clutch with no signs of wear...it is a 50 sized heli with the power of a 90.. so it is no "sloach" either
...and I do fly all of my scalers also.. my Bell 47G at 1/4 scale and 32 lbs, still has the clutch in place, and again, no show of wear..
So, yes the clutch may add a little weight, but in my set up's I do not need that extra 10 seconds of flight...
I also agree with PJRono about how great the Castle Creations ESC's slow spool up works with a direct drive.. and that same slow spool up going through the clutch sounds even better!!!!
Eventually, I am sure I will have to replace a lining or even a clutch.. but I do not see anything in the near future!!!
Whatever works for you is great... this hobby is fun and there is no one way to do things..
Good luck with your conversion!!!!! Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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05-07-2012 03:15 PM  6 years agoPost 19
Copter Doctor

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Enterprise/ft.rucker ,al- home of army aviation

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. I know many do not fly their scalers alot and they sit on a bench or table to be looked at and maybe hovered once in a while
there are some who do that and i can understand it i suppose, spend lots of time and money on a project and then be expected to risk crashing it by flying it? yeah i can understand their plight fortunately i dont suffer from that fear and once i am confident in the machines soundness, its on like donkey kong
i commend you on being as brave with your scalers as you are, you shouldnt have any problem flying in a national contest because your nerves are your biggest obstacle then
the compliment you get after a flight are worth every effort you put into flying and it definately is a confidence booster. all part of the fun.
i am converting to electric, my blackhawk of 7 years. i finally have had enough of battling the high compression of that os 91 on the first starts. this is a machine with countless gallons of fuel thru it and its never had a clutch or liner replaced though its had to endure a 19 lb heli tuning 4 main and tail blades. the clutch of course will be retained and the conversion is under way currently.

drive a rotary, fly a rotorcraft

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05-07-2012 04:08 PM  6 years agoPost 20
PJRono

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Minnesota, Ya!

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At least that fuse has plenty of room to get into it and work on it.
I guess I just like to minimize the number of components that could fail.

If you skip me I can't play!

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