RunRyder RC
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 3031 views POST REPLY
HomeAircraftHelicopterAlignOther › New Lynx clutch: 6.3mm thick on one side, 8.0mm on the other...
05-01-2010 04:23 AM  8 years agoPost 1
n808

rrVeteran

Seattle, WA - USA

My Posts: All  Forum  Topic

The clutch on my 700N broke last weekend, and I figured I'd replace it with the Lynx Heavy Duty clutch, which has been spoken so well of. Test fitting it in the shoe I noticed it was incredibly out of balance, and I was to put it mildly, surprised to see that its thickness on one side was 6.3mm while on the other 8.0mm. It is completely unusable of course, and I was disappointed both to see such quality control, and not being able to fly my 700N two weekends in a row... I had expected top notch engineering and quality. Hopefully this is one of a kind.

I will contact Lynx and ask if they can ship me a replacement, and if they request it, send the mis-manufactured one back to them, since maybe they would like to look into how it got past their quality control.

Karl.

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
05-01-2010 04:47 AM  8 years agoPost 2
jschenck

rrProfessor

La Vista, NE.

My Posts: All  Forum  Topic

How do we trust their spindle bolts if they send out a clutch looking like that.

btw, I think the stock clutch is just fine. If you reline the bell so you have the proper clearance I'll bet a new $20 stock clutch will last a long time.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-01-2010 05:13 AM  8 years agoPost 3
n808

rrVeteran

Seattle, WA - USA

My Posts: All  Forum  Topic

I think the stock clutch is just fine. If you reline the bell so you have the proper clearance I'll bet a new $20 stock clutch will last a long time
Probably, and that would have been the wiser choice to buy, at least in this case. It looks well designed, with two stress points on each side instead of one. My old clutch broke a while after a medium hotstart. I relined the shoe, but the wings had clearly been weakened, because it would always grab even at the lowest idle, and broke a few flights after.

In fact, another clutch broke for me last weekend as well, before I got one heli in the air: the clutch in my Knight 3D, and this also caused by a hotstart a longer while back. Lessons learned, I have improved my pre-start check routines significantly, and will always replace the clutch after a hotstart, if it does happen again. It may look OK, but chances are it expanded so much or got so hot, it is damaged or weakened and will soon break.

(Sometimes three nitros is just the right number to own...)

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
05-01-2010 02:09 PM  8 years agoPost 4
jschenck

rrProfessor

La Vista, NE.

My Posts: All  Forum  Topic

I agree the clutch design looks much better but I don't understand how the QC could let a clutch looking like that slip through. No attempt at balancing them?

Lynx is also producing a replacement spindle bolt for the 700 since there are reports of the stock ones breaking in flight.

http://www.lynxheli.com/index.php?o...id=28&Itemid=13

PM  EMAIL  GALLERY  Attn:RR  Quote
05-01-2010 03:55 PM  8 years agoPost 5
Rockohaulic

rrElite Veteran

Canyon Country, CA, USA, 3rd Rock from the Sun

My Posts: All  Forum  Topic

Many pilots are having great luck with the QUK clutches, including me.

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

PM  EMAIL  GALLERY  Attn:RR  Quote
05-01-2010 04:43 PM  8 years agoPost 6
Four Stroker

rrElite Veteran

Atlanta

My Posts: All  Forum  Topic

jshenck is correct. The stock clutch is just fine if you set the clearance to about 0.008" and replace the lining when it gets to 0.012". There are no magic heavy duty clutches! I own a Lynx clutch but have no reason to install it.

Also note the cheap one-way bearing with the plastic springs in the Lynx as opposed to the stainless springs in the clutch on the left.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-01-2010 04:50 PM  8 years agoPost 7
n808

rrVeteran

Seattle, WA - USA

My Posts: All  Forum  Topic

I already received a reply from Lynx, and they will make sure I get a free replacement, but it sounded like I would have to go through the dealer (HeliDirect), as Lynx is probably based in Italy. If I have to wait for HeliDirect to receive the botched clutch before they can send out a replacement, I will ask for my money back and order a regular one right away so at least I can fly again next weekend.

I did notice the difference in the one-way bearing as well..
The stock clutch is just fine if you set the clearance to about 0.008" and replace the lining when it gets to 0.012"
Thanks, I will keep as a reference. For the metric-minded, that's 0.2 and 0.3mm respectively.

Karl.

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
05-01-2010 08:23 PM  8 years agoPost 8
Chickenrun

rrVeteran

Lincolnshire England UK

My Posts: All  Forum  Topic

I was thinking more a 'goodie bag sweetner' and a replacement clutch for selling junk one however the frame bolts look good ...

Cheers

PM  EMAIL  Attn:RR  Quote
05-01-2010 08:30 PM  8 years agoPost 9
Four Stroker

rrElite Veteran

Atlanta

My Posts: All  Forum  Topic

Karl, that's real damn close. What's metric stuff doing in Seattle?

PM  EMAIL  GALLERY  Attn:RR  Quote
05-02-2010 02:03 AM  8 years agoPost 10
n808

rrVeteran

Seattle, WA - USA

My Posts: All  Forum  Topic

Heh, when I see numbers like 0.008", my mind goes blank. I am from Norway.

I re-assembled the clutch block after having replaced the liner with the Lynx liner I also bought. The Lynx liner is a hair thicker than the Align liner, perhaps 0.9mm for Lynx, vs 0.85 for Align.

Then I measured the gap with the 3/4 remainder of the broken Align clutch. It was 0.2mm (0.008" ) at the point where the wing starts, corresponding to the place with the closest gap. Then I measured with the mis-manufactured Lynx clutch. It was not entirely symmetric in its roundness either. On one side (same place, where the wing starts) it was a little over 0.2mm, but on the other side 0.3mm.

I expect the replacement is better made...

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
05-02-2010 06:08 PM  8 years agoPost 11
Anthony.L

rrElite Veteran

Seattle, WA

My Posts: All  Forum  Topic

Karl, Lynx is actually based in Southern California, but do have strong ties to Italy.

If you have any issues, pick up the phone and call Lynx speak with Luca or Zach. They are both very helpful and make good on their products.

(510) 638-8287 x161

I'm eagerly awaiting the 700 spindle bolts and will be running them on my heli.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-02-2010 06:57 PM  8 years agoPost 12
n808

rrVeteran

Seattle, WA - USA

My Posts: All  Forum  Topic

Yes, Luca was answering me from Italy, but I did see a CA location on their web site. He said they'll decide what to do after talking to Zack on Monday.

I'll probably get the spindle bolts myself. I also like their tail components, and might get them when they're available.

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
05-02-2010 07:39 PM  8 years agoPost 13
lightningrc

rrElite Veteran

UK

My Posts: All  Forum  Topic

I bet yours is not the only faulty one wonder how many guys have bad vibrations and say its not the clutch as its a new Lynx

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-03-2010 04:37 AM  8 years agoPost 14
devious17

rrApprentice

Malaysia

My Posts: All  Forum  Topic

Holy crab! I was about to sign on to my PayPal to get one of the Lynx clutch this morning.

Luckily I stumbled on this piece while helidirect's checking out system kept me waiting.

Looks like not only Align makes 'crabby' stuff.

PM  EMAIL  Attn:RR  Quote
05-03-2010 04:41 AM  8 years agoPost 15
n808

rrVeteran

Seattle, WA - USA

My Posts: All  Forum  Topic

It was probably one of a kind. No one else has reported anything like it. I like the design and will probably eventually use one, but if I have to wait for my RMA to first get back to HeliDirect before they can send me a new, it will take a while, as I will be using a regular clutch in the meantime. Hopefully HeliDirect will offer a refund option, so I can order a new right away. We shall see tomorrow ..

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
05-03-2010 04:47 AM  8 years agoPost 16
george0079

rrElite Veteran

USA

My Posts: All  Forum  Topic

Helidirect isn't going to issue you a refund with getting the bad clutch back, first.

They are going to issue you an RMA, and you're gonna have to send the clutch back. Once they receive it, they will send you out a new one, or offer you the refund

Hell... I can fix that.
Uh oh..
Nope.
It's ***ked!!!
RE-KIT!!!!!

PM  EMAIL  GALLERY  Attn:RR  Quote
05-03-2010 04:51 AM  8 years agoPost 17
n808

rrVeteran

Seattle, WA - USA

My Posts: All  Forum  Topic

That's what I figured, so I have a $20 regular clutch on my order list for tomorrow, so I can get in the air by next weekend.

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
05-03-2010 08:11 AM  8 years agoPost 18
lightningrc

rrElite Veteran

UK

My Posts: All  Forum  Topic

It was probably one of a kind.
How do you work that out ? these are probably knocked out by the 1000 , they just set the machine up and walk away there not made individually.

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-03-2010 08:18 AM  8 years agoPost 19
n808

rrVeteran

Seattle, WA - USA

My Posts: All  Forum  Topic

"probably" was my guess. I have no idea how many flawed clutches were sent out to be sold.. I guess we'll have to wait to see if there are any other reports of similar problems...

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
05-03-2010 08:46 AM  8 years agoPost 20
lightningrc

rrElite Veteran

UK

My Posts: All  Forum  Topic

I got through 3 700 clutches before I bit the bullet and bought the Quick UK clutch , never looked back its been in about 12 months now and has done alot of work ,easily more than the first 3 altogether

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 3031 views POST REPLY
HomeAircraftHelicopterAlignOther › New Lynx clutch: 6.3mm thick on one side, 8.0mm on the other...
 Print TOPIC  Make Suggestion 

 9  Topic Subscribe

Wednesday, October 17 - 3:49 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

The RC discussion world needs to consolidate. RR is now one choice for that. Its software is cutting edge. It hosts on-topic advertising. Help RR increase traffic buy making suggestions, posting in RR's new areas (sites) and by spreading the word.

The RunRyder Difference

• Category system to allow Rep/Vendor postings.
• Classifieds with sold (hidden) category.
• Classifieds with separate view new.
• Answer PMs offsite via email reply.
• Member gallery photos with advanced scripting.
• Gallery photo viewer integrated into postings.
• Highly refined search with advanced back end.
• Hosts its own high end fast response servers.
• Hosts thousands of HD event coverage videos.
• Rewrote entire code base with latest technology.
• No off-topic (annoying) click bait advertising.
Login Here
 New Subscriptions 
 Buddies Online