chain line?  RSS Feed

#1 2012-05-27 6:10am

ysrchris
Centurion Member
Registered: 2008-03-18
Posts: 101

chain line?

I am building an SE Floval Flyer and was putting it together when I noticed that the front sprocket and the freewheel don't seem to line up.
I have Fly cranks with a 44t Profile sprocket and TNT Derringer hubs with an 18t Freewheel. I don't see anyway to adjust anything with the exception of different sized locking spacers for the hubs to shift the freewheel closer to the frame. Is this what I need to do, or do I have to invest in new hubs?

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#2 2012-05-27 7:43am

skillsthebarber
Intermediate
From: Sacramento, CA 95833
Registered: 2011-05-08
Posts: 369

Re: chain line?

I have the same issue with a different bike. It makes a really irritating noise when I ride. I hope someone can chime in on this one.


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#3 2012-05-27 7:55am

midschooler
Museum Addict
From: Joliet, IL
Registered: 2010-01-11
Posts: 1756
Bikes: 47

Re: chain line?

Well you can use a washer on the non drive side to help ppush the FW over in the frame or try to get the chainring as close to the frame as posible. other than that toy should be good. you are using BMX hubs in a BMX frame there shouldnt be that big of an issue.


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#4 2012-05-27 8:14am

stonie
For Sale Restricted
From: Boise
Registered: 2008-07-16
Posts: 3103
Bikes: 2

Re: chain line?

ysrchris wrote:

I am building an SE Floval Flyer and was putting it together when I noticed that the front sprocket and the freewheel don't seem to line up.
I have Fly cranks with a 44t Profile sprocket and TNT Derringer hubs with an 18t Freewheel. I don't see anyway to adjust anything with the exception of different sized locking spacers for the hubs to shift the freewheel closer to the frame. Is this what I need to do, or do I have to invest in new hubs?

You should have spacers that fit on the crank spindle, which you can put
on the non-drive or drive side to adjust chainline. If you need the freewheel
closer to the frame then you can put a spacer behind the freewheel.

If all that fails, then you could ditch the Profile sprocket and install
a powerdisc. The powerdisc will allow you to install a chainring on either
the front or back and also allow for the use of chainring spacers.

You don't need to buy new hubs, definitely not.


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#5 2012-05-27 10:30pm

ysrchris
Centurion Member
Registered: 2008-03-18
Posts: 101

Re: chain line?

Ahh..hmm...OOPPSS...
"With spit in my cheeck and a good lisp imitation"...Sorry I'm stupid...
Just went and reassembled again, This time useing a straight edge and everything lines up just fine.
Thanks for your input.
Chris

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#6 2012-05-28 7:21am

stonie
For Sale Restricted
From: Boise
Registered: 2008-07-16
Posts: 3103
Bikes: 2

Re: chain line?

ysrchris wrote:

Ahh..hmm...OOPPSS...
"With spit in my cheeck and a good lisp imitation"...Sorry I'm stupid...
Just went and reassembled again, This time useing a straight edge and everything lines up just fine.
Thanks for your input.
Chris

Glad to hear you have it lined up properly.   smile


Gnarly is when it's beyond radical, it's balls out danger, & or perfection, & or skill or all of that combined. Nobody can shred like that guy, he's gnarly.                                        \m/  ( º . º )  \m/
*Shipping available to your Confirmed Paypal Address only, will not ship to a different address*

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#7 2012-05-28 8:23am

johnng23604
U seen my "baseball"
From: CC TX
Registered: 2009-02-22
Posts: 4536
Bikes: 44
Website

Re: chain line?

ysrchris wrote:

Ahh..hmm...OOPPSS...
"With spit in my cheeck and a good lisp imitation"...Sorry I'm stupid...
Just went and reassembled again, This time useing a straight edge and everything lines up just fine.
Thanks for your input.
Chris

cool ya got it lined up.

Something else to think about that is often forgot about, is the "jam nut" thickness.

You can offset your back wheel (with free wheel or coaster brake) closer or further to the frame by changing the thickness of those jam nuts that lock down the bearing cones. The same goes for bullseye hubs, by changing the thickness of the locking spacers that retain the bearings into the hub.

Or as mentioned above by adding washers to the inside of the frame area. But I suggest you add any washers under the jam nuts and between the bearing cones.

Sometimes dishing the wheel (spoke wheels only, not mags) is required when you change the off set of your hub for chain alignment.
If your good at building wheels and truing them, then "dish" the wheel by adjusting your spokes to center or off center the back wheel.


I'm looking for the following frames, frame & forks or completes by BMX products:
MotoTrac (nickle or chrome), Racer-X or a Super-X (with the double gussets).
Thanks wink
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#8 2012-12-28 12:19pm

astroidbeltwalker
Museum Addict
From: loan shark
Registered: 2011-10-07
Posts: 2745
Bikes: 1
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Re: chain line?

putting final touches on my build. i have now to adjust the chain line which is close but not spot on. im using a hutch force spider
milled to accept sugino ct-a5 cranks. the drive side crank arm sits flush, the spider could take another pass, ( barley ) but i do have the last
drive side crank arm thread sitting right inside the ring, i could probably fit a post card into the gap, between the crank arm & spider.

i think with a final tighten of the crank arms it should line up, ( don't have a crank puller yet ) im using campagnolo record high flange rear.
and the campy aluminum spacer 4.6mm which could be taken back a bit too.

my question if i had TOO, which i dont think i will could a take a pass or two on the spindle to seat the drive side arm closer to the frame.
its a tange cv-170


they live, we sleep
Wtb pro class frame or F/f
Wtb bullseye 1st gen crank 175,177,180

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#9 2012-12-29 7:50am

astroidbeltwalker
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From: loan shark
Registered: 2011-10-07
Posts: 2745
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Re: chain line?

anyhelp


they live, we sleep
Wtb pro class frame or F/f
Wtb bullseye 1st gen crank 175,177,180

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#10 2012-12-29 1:34pm

jsngrimm
Dyno Freak
From: Cuyahoga Falls, OH
Registered: 2012-05-03
Posts: 2094
Bikes: 2

Re: chain line?

If its really that close try putting an axle spacer on inside the non drive side to push freewheel out a bit. If you need it to move the other way just get the spider flush with the crank and it should be ok.


--Current Rides--
'86 Peugeot Pipeline 26"
'94 GT Performer

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#11 2013-01-03 11:44am

astroidbeltwalker
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From: loan shark
Registered: 2011-10-07
Posts: 2745
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Re: chain line?

just messing with the chain line at this point.

http://i72.photobucket.com/albums/i190/bdozier/PTDC0001_zpse8aef2d2.jpg
http://i72.photobucket.com/albums/i190/bdozier/PTDC0002_zps240e0154.jpg
http://i72.photobucket.com/albums/i190/bdozier/PTDC0003_zpseedc3873.jpg

still think its close enough.


they live, we sleep
Wtb pro class frame or F/f
Wtb bullseye 1st gen crank 175,177,180

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#12 2013-01-03 11:58am

SoGnarly
Expert
Registered: 2012-08-05
Posts: 661

Re: chain line?

Looks like alot of space between the frame and chainring.

Here's mine, lol- http://i114.photobucket.com/albums/n248 … G_5400.jpg


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#13 2013-01-03 1:04pm

skaman
Pro Member
Registered: 2008-10-21
Posts: 482
For Sale

Re: chain line?

Spider facing the wrong way.

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#14 2013-01-03 1:29pm

I am the owl...
Pro MemberSinner
From: Alberta, Canada
Registered: 2007-04-30
Posts: 21855
Bikes: 7
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Re: chain line?

skaman wrote:

Spider facing the wrong way.

This


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#15 2013-01-04 12:29pm

astroidbeltwalker
Museum Addict
From: loan shark
Registered: 2011-10-07
Posts: 2745
Bikes: 1
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Re: chain line?

yup was messing around tongue. i think that looks cool, but the cv-170 has that lock nut


they live, we sleep
Wtb pro class frame or F/f
Wtb bullseye 1st gen crank 175,177,180

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#16 2013-01-04 12:35pm

astroidbeltwalker
Museum Addict
From: loan shark
Registered: 2011-10-07
Posts: 2745
Bikes: 1
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Re: chain line?

how did you get your chairing so close to the bb shell. hmm do i need the lock nut is that even on the right side.


they live, we sleep
Wtb pro class frame or F/f
Wtb bullseye 1st gen crank 175,177,180

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#17 2013-01-04 1:33pm

SoGnarly
Expert
Registered: 2012-08-05
Posts: 661

Re: chain line?

astroidbeltwalker wrote:

how did you get your chairing so close to the bb shell. hmm do i need the lock nut is that even on the right side.

I had some issues with mine, I wound up making some spacers so the cranks were spaced the same distance from the frame. 

I dont know what your spindle looks like, but the side you remove the preload nut is supposed to be on the non-drive side.  Looks like you have it backwards which is pushing the chainring out too far.


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#18 2013-01-04 2:14pm

astroidbeltwalker
Museum Addict
From: loan shark
Registered: 2011-10-07
Posts: 2745
Bikes: 1
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Re: chain line?

you was correct ding ding ding. it was on backwads lol. its fixed now. lol. here lemme show ya.

http://i1126.photobucket.com/albums/l619/bldozier1/PTDC0004.jpg
http://i1126.photobucket.com/albums/l619/bldozier1/PTDC0005.jpg
http://i1126.photobucket.com/albums/l619/bldozier1/PTDC0006.jpg

waiting on a rear axle cone so its not dialed. but its close... much closer now the axle has be turnt
could be closer and like you said custom nuts would be needed.


they live, we sleep
Wtb pro class frame or F/f
Wtb bullseye 1st gen crank 175,177,180

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#19 2013-02-05 8:16am

astroidbeltwalker
Museum Addict
From: loan shark
Registered: 2011-10-07
Posts: 2745
Bikes: 1
Website

Re: chain line?

see about the 13th link from the chainwheel, where the chain starts to kink.  finally mess around with the bb cone, and removed the hex portion of it. so the cone is now flat.

http://i1275.photobucket.com/albums/y447/bldozier2/PTDC0015_zps3d48a1fa.jpg
http://i1275.photobucket.com/albums/y447/bldozier2/PTDC0014_zps8e1c67d2.jpg

tange cv - 170

http://i1275.photobucket.com/albums/y447/bldozier2/PTDC0011_zpsbda090b2.jpg

non - drive crank seat
http://i1275.photobucket.com/albums/y447/bldozier2/PTDC0012_zps1cea5836.jpg

drive side seat ( touched up )
http://i1275.photobucket.com/albums/y447/bldozier2/PTDC0013_zps5be0b447.jpg

though about going flat against the cone, i'd need an washer or too, i think its where it needs to be now.


they live, we sleep
Wtb pro class frame or F/f
Wtb bullseye 1st gen crank 175,177,180

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#20 2013-02-05 10:19am

waterslider
Expert
From: Houston, TX
Registered: 2008-03-17
Posts: 693

Re: chain line?

stonie wrote:

ysrchris wrote:

I am building an SE Floval Flyer and was putting it together when I noticed that the front sprocket and the freewheel don't seem to line up.
I have Fly cranks with a 44t Profile sprocket and TNT Derringer hubs with an 18t Freewheel. I don't see anyway to adjust anything with the exception of different sized locking spacers for the hubs to shift the freewheel closer to the frame. Is this what I need to do, or do I have to invest in new hubs?

You should have spacers that fit on the crank spindle, which you can put
on the non-drive or drive side to adjust chainline. If you need the freewheel
closer to the frame then you can put a spacer behind the freewheel.

If all that fails, then you could ditch the Profile sprocket and install
a powerdisc. The powerdisc will allow you to install a chainring on either
the front or back and also allow for the use of chainring spacers.

You don't need to buy new hubs, definitely not.

Mr. Stonie,
where would one find a spacer to fit the drive side of the hub/over the freewheel threads to bring the freewheel closer to the frame?

This seems to be my issue each time I install a 3 piece crank set. 
I can get the chain wheel as close to the chain stays with out touching them.  But the freewheel would still need to be spaced closer to the frame.

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#21 2013-02-05 11:27am

SoGnarly
Expert
Registered: 2012-08-05
Posts: 661

Re: chain line?

waterslider wrote:

where would one find a spacer to fit the drive side of the hub/over the freewheel threads to bring the freewheel closer to the frame?

http://www.google.com/search?hl=en& … gcdAbZ3vYM


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#22 2013-02-05 1:30pm

waterslider
Expert
From: Houston, TX
Registered: 2008-03-17
Posts: 693

Re: chain line?

SoGnarly wrote:

waterslider wrote:

where would one find a spacer to fit the drive side of the hub/over the freewheel threads to bring the freewheel closer to the frame?

http://www.google.com/search?hl=en& … gcdAbZ3vYM

Thanks SoGnarly.
Colored tuffs/planet BMX has them in 1, 1.5 and 2 MM.

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#23 2013-02-06 10:07am

stonie
For Sale Restricted
From: Boise
Registered: 2008-07-16
Posts: 3103
Bikes: 2

Re: chain line?

waterslider wrote:

SoGnarly wrote:

waterslider wrote:

where would one find a spacer to fit the drive side of the hub/over the freewheel threads to bring the freewheel closer to the frame?

http://www.google.com/search?hl=en& … gcdAbZ3vYM

Thanks SoGnarly.
Colored tuffs/planet BMX has them in 1, 1.5 and 2 MM.

Yep          smile


Gnarly is when it's beyond radical, it's balls out danger, & or perfection, & or skill or all of that combined. Nobody can shred like that guy, he's gnarly.                                        \m/  ( º . º )  \m/
*Shipping available to your Confirmed Paypal Address only, will not ship to a different address*

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