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English => Parts & Bikes => Topic started by: Flatland Fanatic on January 23, 2013, 09:17:33 PM

Title: KHE Greyhound Front Hub Squeaks
Post by: Flatland Fanatic on January 23, 2013, 09:17:33 PM
I have a recently purchased KHE Greyhound front hub.  I have noticed that when I do switch-handed steamrollers with my bars backwards, the hub makes an awful squeaking sound.  When I do the same trick with the bars forward, it is silent.  Has anyone else experienced this with your front hub?  Should I take it apart and re-grease the bearings?  I've noticed that my front wheel is starting to roll slightly slower.

The switch handed steam is the only trick that it squeaks on.
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: DaddyCool on January 23, 2013, 11:15:15 PM
I have not had this problem, but it seems like it is caused by only one of the bearings. The one which experiences more pressure when doing the steam with reverse bars. I would expect it to be the one more far away from your foot.
But anyway, I would try to open the hub and regrease everything. I don't think there is much more you can do.
I have not tried a female axle yet, but I could imagine that especially with aluminium inner axles, the forces applied to the bearings are a little higher (at least compared to 14 mm axles). But on the other hand so many people are using them... The axle diameter is bigger in the center and it should not flex so much.
Please update if you find a solution.
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: Flatland Fanatic on January 23, 2013, 11:25:22 PM
Thanks for the advice.  I'm going to open it up and re-grease everything tonight.  I'll post an update later.
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: melon lover on January 23, 2013, 11:40:07 PM
I had this hub and after about 4 months it basically stopped spinning when i fit the pegs hand tight twas all fine but as soon as i tightened it with the wrench it doesn't spin anymore so i ditched it and am going back to the original giesha front hub
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: melon lover on January 23, 2013, 11:41:34 PM
I did try re-greasing the bearings before i got rid of it
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: Flatland Fanatic on January 24, 2013, 07:29:16 AM
Melon Lover, you are exactly right.  It spins fine until you actually tighten it down.  I have had mine for about 4 months as well and it has started acting up.  Damn.  I hate wasting my hard earned money on a product that doesn't work.  I love my KHE Geisha Light Freecoaster on the back, but this KHE Greyhound front hub is starting to upset me.  I am going to try and tinker with it a little while longer before I give up on it.  Just out of curiosity, which front hub did you switch to and how has it held up?  Looks like I might be in the market for a new one soon!
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: Phatman on January 24, 2013, 07:31:37 AM
It could be that the collars arent the right size to space the hub out properly. If you've got nothing to loose i would suggest filing the outside of the collar down abit. If the collar is just a smidge to wide when you tighten the bolts down the collars will squash the bearings & create the tightness you guys are describing.
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: Flatland Fanatic on January 24, 2013, 07:43:07 AM
Why is it that with flatland you pretty much have to modify EVERY part to get it to work right?!?  Uggghhh!!!!!
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: Phatman on January 24, 2013, 08:39:37 AM
Unfortunately, i myself think its because Flatland is such a small genre of BMX, the money & time just isnt spent making things properly the way they should be 1st time round. A few companies have not admitted to it but have issued V.2s & so on of parts to get them to work the way they shouldve the 1st time round. Of course there are quite a few companies that do, do it right the 1st time round so i cant talk sh*t on every company but as you said its annoying, want to try a new part, then have to worry about if it will work out of the box or will have to be tinkered with. Not fantastic!
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: back2flat35 on January 24, 2013, 02:07:08 PM
i have a hub that does that. i loosen the collars and make them hand tight then tighten each pegs in increments back and forth
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: melon lover on January 24, 2013, 08:18:06 PM
I got the original giesha front hub (non female)

My first choice was the demolition front hub but it has a low flange and  i have Ti spokes so i didn't want to change them My son has a demolition front and that thing rolls 2-3 times longer than any other hub that i own

Pure Gold
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: Phatman on January 24, 2013, 08:25:56 PM
^ I know that feeling, Ive got G-Sport hubs on my street/hybrid bike & my mate has a really old Vandero 1 hub with tiny bearings & a male axle, That thing spins for days. Im guessing its because i run duel hub guards on the Marmy & he has none on the Vandero.
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: melon lover on January 24, 2013, 08:44:25 PM
I've got profiles on my race bike and crupi's on my little mans race bike and the demolition is less than half the price of both and spins nearly 3x longer than the profile and 2x longer than crupi

The proper hubs are the same spin for ages
 
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: K.Wong on January 25, 2013, 05:21:01 AM
yeah, old proper male hubs are one of the longest spinning hubs out there, along with hoffman/gack girthy hubs.
i suspect the alloy cones on the greyhound must have warp a little, and as it's held in place only by rubber "o" rings, whenever we tighten the wheel down and load it sideways, the cones and bearings bind together.
the takino bearings that comes orginal with the hubs aren't exactly the best either - i felt a rough spot whenever i rotate the axle by hand; i would probly swapped out to SDS bearing once the bearings start to bind.

profile make cones with steel inserts for their female hubs that i think would prevent this issue, but it's an rather expensive optional upgrade item.     
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: melon lover on January 25, 2013, 08:57:05 AM
/\ /\ /\ /\ /\ /\ /\ You said it Kelvin it's male hubs for me from now on


Throughout history females have always been high Maintinance  ;D
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: Flatland Fanatic on January 25, 2013, 02:13:18 PM
It could be that the collars arent the right size to space the hub out properly. If you've got nothing to loose i would suggest filing the outside of the collar down abit. If the collar is just a smidge to wide when you tighten the bolts down the collars will squash the bearings & create the tightness you guys are describing.

Topsey, you are a genius!  That is exactly what we did.  One of my buddies owns a lot of machines and he is an incredible bike mechanic.  He took the collars and used a machine to file them down slightly.  The wheel rolls forever now.  The screeching sound was a different issue.  It turned out to be a spoke that needed some lubrication.  My wheel rolls fine and makes no noises....FINALLY!!!
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: Phatman on January 25, 2013, 05:48:49 PM
Awesome! Glad i could help :)
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: londonflat on January 25, 2013, 08:09:30 PM
/\ /\ /\ /\ /\ /\ /\ You said it Kelvin it's male hubs for me from now on


Throughout history females have always been high Maintinance  ;D
Thanks for that Matt that made me laugh loads when i read that,lol,top bolt got posted for you today by the way.
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: K.Wong on January 26, 2013, 08:47:20 AM
It could be that the collars arent the right size to space the hub out properly. If you've got nothing to loose i would suggest filing the outside of the collar down abit. If the collar is just a smidge to wide when you tighten the bolts down the collars will squash the bearings & create the tightness you guys are describing.

Topsey, you are a genius!  That is exactly what we did.  One of my buddies owns a lot of machines and he is an incredible bike mechanic.  He took the collars and used a machine to file them down slightly.  The wheel rolls forever now.  The screeching sound was a different issue.  It turned out to be a spoke that needed some lubrication.  My wheel rolls fine and makes no noises....FINALLY!!!

can you be more specific?
 
1)
i'm really keen as mine doesn't roll as smooth as my old proper hub and i'd like to solve the issue.
so you just turn down the external side ("face" part which meets the dropout's) of the cone so that it sits flush with the alloy axle?   
 
2)
how the hell do spokes screech? "ping, tings and poinks!" are usually what is heard from spoke/ nipple issues... lol
 
/\ /\ /\ /\ /\ /\ /\ You said it Kelvin it's male hubs for me from now on


Throughout history females have always been high Maintinance  ;D

lol, so right...and yet so wrong, lol.
 
 
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: DaddyCool on January 26, 2013, 09:10:51 AM
Good to hear that!
I can understand why a lot of you guys are angry about the need to do such things when you have just bought a new product. On the other hand the companies have to produce with small tolerances and I think this has caused the problem here. The cone seems to have been just to close to the bearing on the outer side. Am I right?
Altough this should have been done properly by the manufacturer, it is nice to here that in some cases you can fix one of these problems.
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: Flatland Fanatic on January 26, 2013, 03:19:32 PM
It could be that the collars arent the right size to space the hub out properly. If you've got nothing to loose i would suggest filing the outside of the collar down abit. If the collar is just a smidge to wide when you tighten the bolts down the collars will squash the bearings & create the tightness you guys are describing.


can you be more specific?
 
1)
i'm really keen as mine doesn't roll as smooth as my old proper hub and i'd like to solve the issue.
so you just turn down the external side ("face" part which meets the dropout's) of the cone so that it sits flush with the alloy axle?   
 
 

I will try to post pics later.  Basically, the wheel wasn't rolling well because the collars weren't even with the axle.  Take your wheel off, take the pegs off and turn the wheel on its side.  Look really closely at the aluminum axle and the collars.  On mine, the collars were a few millimeters taller than the end of the axle.  If you look close, it is clearly noticeable.  The collars pop right off on the Greyhound.  Take each one and carefully begin filing down the outside until it sits even with the axle when you put it back on.  You have to file just a little to get it to work, but it will make all of the difference in the world.
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: Flatland Fanatic on January 26, 2013, 09:35:39 PM
P.S.  We filed down the external part of the cone, not the side that is closest to the hub.  We filed on the side that is at the end of the axle.
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: K.Wong on January 27, 2013, 09:53:26 AM
i get you; i noticed that (cone and spindle not flush) on my hub too. i thought that was to provide compression to prevent side-to-side play.
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: DaddyCool on January 27, 2013, 02:39:58 PM
K. Wong, I believe that it exactly what it is meant for. If one would file down too much, it would lead to side-to-side play. If this area is too wide, the hub scratches under side load.
That is what I meant with my comment about the tolerances. With this system the cones have to be very precise. At least I think that is the problem.
Title: Re: KHE Greyhound Front Hub Squeaks
Post by: K.Wong on January 27, 2013, 03:26:49 PM
the fork's dropouts play a factor too, me thinks.
my friend's ares clone of the greyhound front hub suffers from side to side play; and the dropout's are around 101.5mm wide. shims help, but makes installing and removing the front wheel a bitch, and my friend travels a fair bit with his bike, so he decided that no shims and compressing the forks by over-tightening would be better option for him - it works, but a mechanic-head like me shivers in disgust, lol.