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HelicopterBeginners Corner › Blade Chpices for Trex 450
01-24-2007 04:00 PM  10 years agoPost 1
boogman

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san diego ca 92109

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Has anyone exsperianced fiber blades over the wood ones, Also the 325 or 335 ones? I am just at the hoovering stage as far as skill goes so obviosly blades do not last that long for me yet?

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01-24-2007 05:07 PM  10 years agoPost 2
marc8090

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Long Island, N.Y.

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Stick with the 325 pro woodies. They fly great and are cheap. You don't need carbon blades, and stay away from the plastic ones.

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01-24-2007 05:17 PM  10 years agoPost 3
boogman

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san diego ca 92109

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Thank you...Do you use a pitch gauge or just eye your set up?

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01-24-2007 05:51 PM  10 years agoPost 4
Nightstalker

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UK (BEDFORDSHIRE)

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Thank you...Do you use a pitch gauge or just eye your set up?
always use a pitch gage

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01-24-2007 05:58 PM  10 years agoPost 5
Pyrock

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SF Bay Area

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Stick with the 325 Pro Woodies. Once you get into forward flight, go the some good CF blades. They are a world of difference when it comes to cyclic repsonse but be warned, once you go CF, you will never go back to woodies OR carbon composite.

Trex 500, Stretched Logo 10 3D, Ion-X, Gaui 200

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01-25-2007 02:12 AM  10 years agoPost 6
pilotdane

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Roxboro, NC

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Everyone keeps suggesting the pro 325's. What's the opinion on the plain Align blades, not pro, just plain white. What about different lengths like the 335?

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01-25-2007 03:47 AM  10 years agoPost 7
marc8090

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Long Island, N.Y.

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I never use a pitch gauge. Eyeball 0 degrees at midstick, do full power climbouts upright and inverted, adjust links to get them the same, then adjust the swash value to give the amount of pitch the heli likes, and you're done. Who cares what the actual number of degrees is.

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01-25-2007 03:57 AM  10 years agoPost 8
boogman

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san diego ca 92109

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Thanks, I am barely good enough to hoover. I am very new and only flown my trex 4 times. Learning it slowly and trying to gain someknowledge a long the way from exsperianced pilots.

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01-25-2007 04:33 PM  10 years agoPost 9
Pyrock

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SF Bay Area

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I never use a pitch gauge. Eyeball 0 degrees at midstick, do full power climbouts upright and inverted, adjust links to get them the same, then adjust the swash value to give the amount of pitch the heli likes, and you're done. Who cares what the actual number of degrees is.
I would have to respectfully disagree. I started out using the eyeball method and it worked OK for hovering but once I used the pitch guage, it made a world of difference especially with tracking. It's all about the setup. I think Marc's point is that you dont need to know the pitch down to the nearst degree in order for a heli to fly but it's important to know where your pitch is so you will know how the heli will react in various orientations. When I was setting up the pitch curve on my Logo 10 3D, I must not have been paying attention because I inadvertantly set it to 0 to +15 so when I went inverted, it started to drop. Luckily I was able to get it upright to avoid a crash. What's more important is that a pitch guage helps you set the blade tracking. THIS is when you need to know the EXACT pitch of EACH blade otherwise, you will spend a lot of time turning linkages and guessing how much is enough. Since using a pitch guage to balance the degree of pitch on each blade, I've NEVER had a tracking problem. There is a reason why 99% of RC heli pilots use pitch guages.

Trex 500, Stretched Logo 10 3D, Ion-X, Gaui 200

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01-25-2007 04:39 PM  10 years agoPost 10
boogman

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san diego ca 92109

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What gauge do you use, And where can I get a tutorial on the correct method on useing one and what is the correct pitch for Trex 450? Is it differant if I can only hoover and do minamal manurvering at this point? I det it up by eye as far as the level of the blades and it seems to fly very stable, But I have no idea where the pitch is. The hobbie shop guy set it up for me and demo flew it and was able to do mant 3d moves which is way beyond me at this time???

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01-25-2007 04:39 PM  10 years agoPost 11
Pyrock

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SF Bay Area

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Everyone keeps suggesting the pro 325's. What's the opinion on the plain Align blades, not pro, just plain white. What about different lengths like the 335?
My first hand experience is that the plain white plastic Align blades are ok for the first few flights but they warp really easily and I understand that they flex like a mutha! Pro woodies are so cheap that I wouldn't waste time and $$ on the plain blades. I say get the woodies and when you start doing fast forward flight and some loops and rolls, ditch the Pro Woodies and go Carbon Composite or better yet, go Carbon Fiber. Very stiff and responsive!

Trex 500, Stretched Logo 10 3D, Ion-X, Gaui 200

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01-25-2007 04:54 PM  10 years agoPost 12
Pyrock

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SF Bay Area

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What gauge do you use, And where can I get a tutorial on the correct method on useing one and what is the correct pitch for Trex 450? Is it differant if I can only hoover and do minamal manurvering at this point? I det it up by eye as far as the level of the blades and it seems to fly very stable, But I have no idea where the pitch is. The hobbie shop guy set it up for me and demo flew it and was able to do mant 3d moves which is way beyond me at this time???
I use the Align pitch guage and only cost around $5-$8 if I remember correctly. First you will need to unplug the motor and place the guage in the middle of the blade. Place the left stick in the middle position. Make sure the flybar is level and adjust the guage such that the top of the guage (aluminum edge) is aligned with the flybar then read where the arrow points to. At mid stick, the pitch should be 0 degrees or level. When you move the stick to the top position, it should read anywhere from +8 to +10. When you put the stick in the lowest position, it should read anywhere from -4 to -10. Adjust the linkages connected to the blade grips as necessary. Once you have it mechanically close, you can use the Tx to fine tune it. It's always best to have it as close as possible to your desired pitch mechanically before you make any adjustments electronically. Once you set the pitch for one side, make sure to set the other blade in the exact same position so you will have good tracking. When I first started out, my "Normal" mode (for hovering) was set at -4 to +10 and "idle up 1" was set to -10 to +10. Now I have -10 to +10 on all modes so flight characteristics are idendticall as far as pitch is concerned. I found that I sometimes needed the heli to drop just as quickly as I needed it to rise...then there's inverted flight which obviously needs equal pitch on both up and down on the stick. This is how I do it and it works great for me. Others may do it slightly different or eyeball it like Marc8090, which is fine but I like to be precise. IMO, It pays off with predictabl flight and I like to leave NOTHING to chance.

Trex 500, Stretched Logo 10 3D, Ion-X, Gaui 200

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01-25-2007 05:12 PM  10 years agoPost 13
boogman

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san diego ca 92109

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Thank you very much for the info. I will pick up a gauge and check it. I am a technical guy that always likes to use tools for the job being a motorcycle shop owner and mechanic i like to know numbers to support the eye method.

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01-25-2007 06:01 PM  10 years agoPost 14
chopper_crazy

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Delphos, Ohio

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I just bought a T-Rex 450XL. It came with two sets of main blades. Which ones should I use (if any) and which ones should I use for paint stir sticks?

It's a complex, costly, glow powered anti-gravity machine!

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01-25-2007 06:58 PM  10 years agoPost 15
sla

rrApprentice

wasilla,ak,99654

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a pitch gauge would be good. do you want to "eyeball" your 700-1000$ heli? i wouldnt. i like the wooden blades cause they are more forgiving as far as simple hvering type stuff goes. the carbon ones are a little more reactive and they are more money of course.
as far as rocket climbouts or whatever was said i wouldnt worry about that quiteyet if your a beginer. i would practice the basics first and be comfortable. im just now comfortable with the basic stuff.
i would strongly recommend not setting your negative pitch more than -2 or so. if you get a little jumpy at that setting you wont slam your heli into the ground. it will fall fast but not like -10 fast.
a pitch gauge is just a reference like anything else. and like was said by somebody probably 99.9% of hei pilots use them for a reason.

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01-26-2007 01:28 AM  10 years agoPost 16
marc8090

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Long Island, N.Y.

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Just to add fuel to the fire ask Alan Szabo how much pitch he runs and he won't know because he doesn't use a pitch guage. Your eye is very good at getting zero degrees pitch. I also set one blade by eye, then measure the links with a caliper, and make the other links the same. I don't put tracking tape on unless I need it, and most of the time I don't. Whether it's my T-tex or Stratus, I set them up the same way and it works. I used to use a pitch gauge all the time until I learned how it wasn't needed. Also, read some of James Wang's articles and you'll see he doesn't use one either.

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01-26-2007 02:33 AM  10 years agoPost 17
pilotdane

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Roxboro, NC

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Pyrock: I'm talking about the plain white wood Align blades for about $9-10 and then there are the pro wood blades for $12-13. Is there a difference other than the paint job?

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01-26-2007 03:55 PM  10 years agoPost 18
Pyrock

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SF Bay Area

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Pyrock: I'm talking about the plain white wood Align blades for about $9-10 and then there are the pro wood blades for $12-13. Is there a difference other than the paint job?
OK...I've never used them but my cousin had some that came with an XL kit. They warped pretty quickly and needed quite a bit of balancing tape. Maybe for initial hovering they would be ok but he experienced the warping pretty quickly. I'd go straight to the Pro Woodies and save the white ones for backup. They also make good paint stirring sticks.

As for Allan Szabo not using a pitch guage, that's fine if you're him. If you are experienced with how a pitch guage correlates with your eyeballing method, that's great (I wish I had that confidence in my eyeballing skills). My point is that I wouldn't suggest it to less experienced pilots like Boogman or Pilotdane or me for that matter

Once I get more experience setting up helis, I'm sure I'll have enough confidence in my eyeballing to set up a $2000 heli without a pitch guage. I've only done two initial setups but I've lost count of how many times I've setup my helis after crashes.

Trex 500, Stretched Logo 10 3D, Ion-X, Gaui 200

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