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H-1Airframer · 08-17-2011, 04:28 PM

How tight should the belt be on the 425?

KRYPTO316 · 08-17-2011, 08:49 PM

I just put enough tension so that with light pressure on the front of the belt it only pushes in about half of the gap if that makes sense. you dont want it too loose so it skips a tooth or too tight where it puts more stress on the motor. Hope this helps, not sure how else to describe it.

H-1Airframer · 08-17-2011, 08:54 PM

That's pretty much what I figured. Just wanted to make sure. Thanks.

KRYPTO316 · 08-17-2011, 11:05 PM

no problem, lets see some pics when you get er done.

H-1Airframer · 08-17-2011, 11:36 PM

Oh, she's done, but she keeps ending up in pieces. I am trying to figure out why my tail is all over the place. I think I may have a vibration somewhere that's messing with the gyro. . I'm going to change out the tail output shaft in case it's bent a little and the tail hub. Other than that, I don't know what to do. The mains are balanced. Ever since the first crash she just hasn't been right.

KRYPTO316 · 08-18-2011, 10:34 AM

Check the hub between the tail blade grips. Mine was bent on my last crash. Take it off with the blade grips and blades stil on. Then hold the blade grips and spin the hub. If it is bent you will feel or see the blade grips move.

H-1Airframer · 08-18-2011, 11:31 AM

Thanks. I ordered one already, thinking it was the culprit. It should be here today. I'll verify with that method though. I didn't even think of checking it like that. I'm sure that'd mess with the gyro. All my settings are correct.

KRYPTO316 · 08-18-2011, 01:22 PM

Right on let me know how it works out.

H-1Airframer · 08-18-2011, 02:14 PM

Will do

Merlin.swe · 08-19-2011, 11:22 AM

I have crashed my plastic Hurry twice and on both occasions i ruined the bearings on main shaft.
Bad bearings makes vibrations...
Also on assembly i noticed that if i tighten the screws to much next to the tail pulley then the lower bearing on the pulley got notchy (but that could be just my heli).
So check your bearings if you have crashed.

H-1Airframer · 08-19-2011, 11:35 AM

I did. They all seem pretty good. I'm taking her ip for a test flight at lunch today. Hopefully changing out that bent tail hub did the trick. The shaft was straight from what I could tell after chucking it up in my drill. We shall see.

H-1Airframer · 08-19-2011, 04:57 PM

Well, everything was good after replacing the tail hub and removing the thick foam pad and metal plate under my gyro and using only a thin mounting pad. The only problem is that I was so excited that I got her back up flying again that I managed to forget to set the timer on my tx so that I knew when to set her down. That, coupled with the fact that I was flying pretty hard because I had an audience, lead me to fly a little too far into the pack, and she went into LVC right as I was pulling out of a loop close to the ground. Needless to say, I was unable to pull enough power to recover from the loop, and she bounced right off the ground, breaking the landing gear, stripping the front drive gear, and cracking both side frames just under the motor mount, among other things that got damaged-blades, etc. FML

KRYPTO316 · 08-19-2011, 08:56 PM

Wow, sorry to hear about the crash. Hope you get er fixed asap.

H-1Airframer · 08-19-2011, 09:46 PM

Yeah. It's pretty embarrassing. At least I got in two good flights.

. Just shows that I'm still kind of a newbie.

volens31 · 08-21-2011, 05:15 AM

Hi Airframer

Check out my vid from earlier in the year, just so you know you're not alone...;-)

[ame]http://www.youtube.com/watch?v=rPPNcYV2Gt0&feature=youtube_gdata_player[/ame]

Onwards and upwards....

Cheers
Nick

Sent from my HTC Desire using Tapatalk

H-1Airframer · 08-21-2011, 12:37 PM

Yeah. It is good to know that I'm not the only one, but it always sucks to see someone's heli that they put time, money, and effort into ending up in pieces, too. That's just part of this hobby though. Rebuild and get back in the air-story of my life.

Mikej · 08-22-2011, 03:23 AM

At the risk of starting a long running argument - this is why I use a lipo monitor as well as a timer - I have often forgotten to start the timer, so the lipo monitor is a very handy back-up.

volens31 · 08-22-2011, 03:29 AM

Hey Mike, does the Lipo monitor tell you when your loops are looking a bit low?? Might get one if so...;-)

Cheers
Nick

Sent from my HTC Desire using Tapatalk

Mikej · 08-22-2011, 03:53 AM

Quote:

Originally Posted by volens31

Hey Mike, does the Lipo monitor tell you when your loops are looking a bit low?? Might get one if so...;-)

Cheers
Nick

Sent from my HTC Desire using Tapatalk

Sorry Nick - I hadn't watched your video before - I thought that you were saying that your battery had gone flat as well - obviously not.

On the plus side, your Hurri bounced really well on impact

volens31 · 08-22-2011, 05:46 AM

It certainly did bounce...:-) maybe we'll speak to Scott re an upgrade involving some shockers in the nose?? Lol...

Sent from my HTC Desire using Tapatalk

08-17-2011, 04:28 PM	#1 (permalink)
H-1Airframer Registered Users My HF Map location Join Date: Feb 2011	Belt tension How tight should the belt be on the 425? __________________ Goosky RS4, S2, S1 OMPHobby M2 Explore, MCPx BL 2, MCPx V2 RealFlight Evolution DX8e

08-17-2011, 08:49 PM	#2 (permalink)
KRYPTO316 Registered Users Join Date: Jan 2009	I just put enough tension so that with light pressure on the front of the belt it only pushes in about half of the gap if that makes sense. you dont want it too loose so it skips a tooth or too tight where it puts more stress on the motor. Hope this helps, not sure how else to describe it. Last edited by KRYPTO316; 08-17-2011 at 08:49 PM.. Reason: typo

08-17-2011, 08:54 PM	#3 (permalink)
H-1Airframer Registered Users Thread Starter My HF Map location Join Date: Feb 2011	That's pretty much what I figured. Just wanted to make sure. Thanks. __________________ Goosky RS4, S2, S1 OMPHobby M2 Explore, MCPx BL 2, MCPx V2 RealFlight Evolution DX8e

08-17-2011, 11:36 PM	#5 (permalink)
H-1Airframer Registered Users Thread Starter My HF Map location Join Date: Feb 2011	Oh, she's done, but she keeps ending up in pieces. I am trying to figure out why my tail is all over the place. I think I may have a vibration somewhere that's messing with the gyro. . I'm going to change out the tail output shaft in case it's bent a little and the tail hub. Other than that, I don't know what to do. The mains are balanced. Ever since the first crash she just hasn't been right. __________________ Goosky RS4, S2, S1 OMPHobby M2 Explore, MCPx BL 2, MCPx V2 RealFlight Evolution DX8e

08-18-2011, 11:31 AM	#7 (permalink)
H-1Airframer Registered Users Thread Starter My HF Map location Join Date: Feb 2011	Thanks. I ordered one already, thinking it was the culprit. It should be here today. I'll verify with that method though. I didn't even think of checking it like that. I'm sure that'd mess with the gyro. All my settings are correct. __________________ Goosky RS4, S2, S1 OMPHobby M2 Explore, MCPx BL 2, MCPx V2 RealFlight Evolution DX8e

08-17-2011, 11:05 PM	#4 (permalink)
KRYPTO316 Registered Users Join Date: Jan 2009	no problem, lets see some pics when you get er done.

08-18-2011, 10:34 AM	#6 (permalink)
KRYPTO316 Registered Users Join Date: Jan 2009	Check the hub between the tail blade grips. Mine was bent on my last crash. Take it off with the blade grips and blades stil on. Then hold the blade grips and spin the hub. If it is bent you will feel or see the blade grips move.

08-18-2011, 01:22 PM	#8 (permalink)
KRYPTO316 Registered Users Join Date: Jan 2009	Right on let me know how it works out.

08-18-2011, 02:14 PM	#9 (permalink)
H-1Airframer Registered Users Thread Starter My HF Map location Join Date: Feb 2011	Will do __________________ Goosky RS4, S2, S1 OMPHobby M2 Explore, MCPx BL 2, MCPx V2 RealFlight Evolution DX8e

08-19-2011, 11:22 AM	#10 (permalink)
Merlin.swe Registered Users Join Date: Jun 2007	I have crashed my plastic Hurry twice and on both occasions i ruined the bearings on main shaft. Bad bearings makes vibrations... Also on assembly i noticed that if i tighten the screws to much next to the tail pulley then the lower bearing on the pulley got notchy (but that could be just my heli). So check your bearings if you have crashed. __________________ LOGO 600, V-Bar GAUI X5 Formula, V-Bar Hurricane 550 CF TT, V-Bar

08-19-2011, 11:35 AM	#11 (permalink)
H-1Airframer Registered Users Thread Starter My HF Map location Join Date: Feb 2011	I did. They all seem pretty good. I'm taking her ip for a test flight at lunch today. Hopefully changing out that bent tail hub did the trick. The shaft was straight from what I could tell after chucking it up in my drill. We shall see. __________________ Goosky RS4, S2, S1 OMPHobby M2 Explore, MCPx BL 2, MCPx V2 RealFlight Evolution DX8e

08-19-2011, 04:57 PM	#12 (permalink)
H-1Airframer Registered Users Thread Starter My HF Map location Join Date: Feb 2011	Well, everything was good after replacing the tail hub and removing the thick foam pad and metal plate under my gyro and using only a thin mounting pad. The only problem is that I was so excited that I got her back up flying again that I managed to forget to set the timer on my tx so that I knew when to set her down. That, coupled with the fact that I was flying pretty hard because I had an audience, lead me to fly a little too far into the pack, and she went into LVC right as I was pulling out of a loop close to the ground. Needless to say, I was unable to pull enough power to recover from the loop, and she bounced right off the ground, breaking the landing gear, stripping the front drive gear, and cracking both side frames just under the motor mount, among other things that got damaged-blades, etc. FML __________________ Goosky RS4, S2, S1 OMPHobby M2 Explore, MCPx BL 2, MCPx V2 RealFlight Evolution DX8e

08-19-2011, 08:56 PM	#13 (permalink)
KRYPTO316 Registered Users Join Date: Jan 2009	Wow, sorry to hear about the crash. Hope you get er fixed asap.

08-19-2011, 09:46 PM	#14 (permalink)
H-1Airframer Registered Users Thread Starter My HF Map location Join Date: Feb 2011	Yeah. It's pretty embarrassing. At least I got in two good flights. . Just shows that I'm still kind of a newbie. __________________ Goosky RS4, S2, S1 OMPHobby M2 Explore, MCPx BL 2, MCPx V2 RealFlight Evolution DX8e

08-21-2011, 05:15 AM	#15 (permalink)
volens31 Registered Users Join Date: Feb 2011	Hi Airframer Check out my vid from earlier in the year, just so you know you're not alone...;-) [ame]http://www.youtube.com/watch?v=rPPNcYV2Gt0&feature=youtube_gdata_player[/ame] Onwards and upwards.... Cheers Nick Sent from my HTC Desire using Tapatalk

08-21-2011, 12:37 PM	#16 (permalink)
H-1Airframer Registered Users Thread Starter My HF Map location Join Date: Feb 2011	Yeah. It is good to know that I'm not the only one, but it always sucks to see someone's heli that they put time, money, and effort into ending up in pieces, too. That's just part of this hobby though. Rebuild and get back in the air-story of my life. __________________ Goosky RS4, S2, S1 OMPHobby M2 Explore, MCPx BL 2, MCPx V2 RealFlight Evolution DX8e

08-22-2011, 03:23 AM	#17 (permalink)
Mikej Registered Users Join Date: Feb 2007 Location: England	At the risk of starting a long running argument - this is why I use a lipo monitor as well as a timer - I have often forgotten to start the timer, so the lipo monitor is a very handy back-up.

08-22-2011, 03:29 AM	#18 (permalink)
volens31 Registered Users Join Date: Feb 2011	Hey Mike, does the Lipo monitor tell you when your loops are looking a bit low?? Might get one if so...;-) Cheers Nick Sent from my HTC Desire using Tapatalk

08-22-2011, 05:46 AM	#20 (permalink)
volens31 Registered Users Join Date: Feb 2011	It certainly did bounce...:-) maybe we'll speak to Scott re an upgrade involving some shockers in the nose?? Lol... Sent from my HTC Desire using Tapatalk

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