Hongfu FM-066/Chinese open mould frame thread

Discuss light weight issues concerning road bikes & parts.
robbern
Posts: 9
Joined: Wed Jun 04, 2014 8:15 am

by robbern

I have not gotten to the cablerouting yet, but i pulled through one of the brakecable and one shiftcable since you asked and it went through without issues. I will def keep the white liners for re-use when its time to change the cables. I think it would be hard to do the routing without them.

ToffieBoi
Posts: 357
Joined: Fri Jan 31, 2014 4:54 pm

by ToffieBoi

robbern wrote:I have not gotten to the cablerouting yet, but i pulled through one of the brakecable and one shiftcable since you asked and it went through without issues. I will def keep the white liners for re-use when its time to change the cables. I think it would be hard to do the routing without them.


With a good quality magnet, it is really easy to route the cable. You will not need the liners :)

by Weenie


robbern
Posts: 9
Joined: Wed Jun 04, 2014 8:15 am

by robbern

Thats a good tip, thank you. I will still keep the liners though, its not like they take up a lot of space.

For the other 069-owners out there, I was sqeezing the top and downtube today and i feel like they "squish" together quite a bit. When I sat on the bike for testing, it felt solid as a rock. Are your tubes the same way and what about other carbon frames? Ive only had one differen carbon frame, and that is a quite heavy and feels pretty thick. Its squishes together, but not as much.

siriz75
Posts: 46
Joined: Tue Jan 21, 2014 2:14 am

by siriz75

robbern wrote:Thats a good tip, thank you. I will still keep the liners though, its not like they take up a lot of space.

For the other 069-owners out there, I was sqeezing the top and downtube today and i feel like they "squish" together quite a bit. When I sat on the bike for testing, it felt solid as a rock. Are your tubes the same way and what about other carbon frames? Ive only had one differen carbon frame, and that is a quite heavy and feels pretty thick. Its squishes together, but not as much.


I was wondering the exact same thing. I'm coming from an FM098 and wanted something lighter. Should there be any concern on the squish factor?


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maxxevv
Posts: 1949
Joined: Wed Feb 09, 2005 4:51 am

by maxxevv

ToffieBoi wrote:
robbern wrote:I have not gotten to the cablerouting yet, but i pulled through one of the brakecable and one shiftcable since you asked and it went through without issues. I will def keep the white liners for re-use when its time to change the cables. I think it would be hard to do the routing without them.


With a good quality magnet, it is really easy to route the cable. You will not need the liners :)


This is a carbon frame.

I don’t think I need to elaborate further for everyone here to infer the implications of your suggestion.

phlip
Posts: 198
Joined: Wed Jan 19, 2011 12:41 am

by phlip

Actually, could you please elaborate? I thought the magnet is supposed to pull the cable.

maxxevv
Posts: 1949
Joined: Wed Feb 09, 2005 4:51 am

by maxxevv

Liners are meant for the cable to rub against when in use. Without them, where would the steel cables rub against ?

russianbear
Posts: 757
Joined: Wed Apr 11, 2012 3:40 am

by russianbear

You are not meant to run cables inside the liners. No. Cables don't rub against anything.

maxxevv
Posts: 1949
Joined: Wed Feb 09, 2005 4:51 am

by maxxevv

REALLY .... ??!!

Then please explain how you get them to go around corners and bends while actuating mechanical motion. This is a NEW branch of physics to me.

JensW
Posts: 763
Joined: Mon Jan 24, 2005 9:41 pm
Location: Uppsala, Sweden

by JensW

maxxevv wrote:REALLY .... ??!!

Then please explain how you get them to go around corners and bends while actuating mechanical motion. This is a NEW branch of physics to me.

often the wire comes out under the bb, and re-enter the frame just behind. still haven't seen a fram where the liner should be left in the frame, but it thats the case here, it´s a stupid construction considering friction and considering that the liner isn't rigid like a shifting hose

maxxevv
Posts: 1949
Joined: Wed Feb 09, 2005 4:51 am

by maxxevv

The cables will rub against something, somewhere along its path. Not matter how well designed a frame it is.

Deal with it as it should and not pretend that 'there's no such thing'....

ToffieBoi
Posts: 357
Joined: Fri Jan 31, 2014 4:54 pm

by ToffieBoi

Cable will rub only under the bb, and that's perfectly normal.
Anywhere else inside the tubes, they design the enter and exit to prevent cable touch anywhere.
That's why, you don't need liners inside. I use them only under the bb to reduce the friction.

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robbern
Posts: 9
Joined: Wed Jun 04, 2014 8:15 am

by robbern

The FM069 has a cover underneath and then there is a little piece of plastic that routes the wires to FD and chainstay. Finished the build today and almost everything went smoothly. The liners for the FD and RD should we on opposite sides, so i had to switch that myself, but easy job.

All done:
Image

afalts
Posts: 157
Joined: Thu Mar 08, 2012 3:20 pm

by afalts

maxxevv wrote:REALLY .... ??!!

Then please explain how you get them to go around corners and bends while actuating mechanical motion. This is a NEW branch of physics to me.


maxxevv, have you built a frame with internal housing? It is a direct, straight line from the entrance to exit points, or to the plastic guide at the BB. No need for a liner. At no point will the cable be rubbing on anything other than the housing (before it enters the frame), or the plastic guide which is designed to be used without a liner.

As a side note, there are a select few frames with liners built in, perhaps that's what you have experience with? Regardless, those are considered inferior due to the generally non-replacable nature of the liner and the inevitability of said liner filling with dirt, gunk, etc.

by Weenie


russianbear
Posts: 757
Joined: Wed Apr 11, 2012 3:40 am

by russianbear

maxxevv wrote:REALLY .... ??!!

Then please explain how you get them to go around corners and bends while actuating mechanical motion. This is a NEW branch of physics to me.


Take your irony somewhere else if you haven't built one of these frames. Or any other internal routed frame apparently.

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