Retrobike Forum Index

It is currently Mon Jan 20, 2020 11:54 pm

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 21 posts ]  Go to page 1, 2, 3  Next
Author Message
PostPosted: Tue Apr 18, 2017 9:55 am 
Retro Guru

Joined: Sat Apr 16, 2016 12:30 pm
Posts: 692
So I've decided to keep my 91 zaskar since it's great, however one bit that Im not satisfied with is the mech hanger - the original hanger has snapped and was part of the frame (as opposed to dropout), since then it has been repaired somewhat clumsily in my opinion with a frame saver type that wobbles around like it might fall of without a wheel attached - not great for gear set ups!

I have something that looks a little like this on there at the minute, but as I said its the wheel bolts that tighten to the frame as opposed to the fasteners:

Image

As I see it my options are:

A - take it to a specialist and have a new hanger welded (that will cost lots and will be prone to snapping again),

B - drill out and rethread/mount the f-ugly hanger I already have (free since I can get the old man on the case with that),

C - attempt to modify the frame around the for a more elegant and replaceable solution (futureproofing to some degree, but possibly weakening the frame - I have to say those old zaskars are definitely in the built to last category when it comes to the amount of metal around the rear wheel mounts)

B and C are where Im angling at this point - Ill see if my old man things he could do some machine work for C, and if not go down the route of securing the current hanger better, possibly looking to replace it for something better looking (that fits the mounts) down the line. Any suggestions or words of wisdom welcome!


Top
 Profile  
 
PostPosted: Tue Apr 18, 2017 10:02 am 
Retro Guru

Joined: Sat Apr 16, 2016 12:30 pm
Posts: 692
Oh, and I suppose another option could be to machine something to fit the current design - ie mounting to the holes already made and the panier bolt. I could have a few spares made too.


Top
 Profile  
 
PostPosted: Tue Apr 18, 2017 10:16 am 
Old School Grand Master

Joined: Mon Feb 11, 2008 9:42 am
Posts: 3481
I'd be looking at C

Should be able to get a fairly straight forward milled profile and 2 or 3 chamfered through holes for bolts, then fit a replaceable hanger.

Don't even have to go to the "correct" thickness. There's a fair bit of tolerance left in the hanger position, if you have a ~3mm thick tab, just mill 2 mm off the face of the dropout and end up with the rear mech 1mm further over. You *should* be ok.

Only things to bear in mind is that the chamfers on the inside of the drop out might be tricky (the other drop out will be in the way slightly) and get a hanger that mounts on the outside and is easily available (or buy 15)


Top
 Profile  
 
PostPosted: Tue Apr 18, 2017 10:23 am 
Retro Guru

Joined: Sat Apr 16, 2016 12:30 pm
Posts: 692
I suppose the obvious thing to do would be to mod for the later zaskar dropouts to fit...


Top
 Profile  
 
 Post subject: Re:
PostPosted: Tue Apr 18, 2017 10:28 am 
Old School Grand Master
User avatar

Joined: Sun Mar 14, 2010 2:33 am
Posts: 3744
Location: Kentcestershire
Will Derailleur Hanger 1 fit?: http://wheelsmfg.com/derailleur-hangers ... rs/gt.html


Top
 Profile  
 
PostPosted: Tue Apr 18, 2017 5:58 pm 
Old School Grand Master
User avatar

Joined: Mon Jun 14, 2010 9:06 pm
Posts: 4861
Location: Herts UK
Realky need to see the frame drop out to make an informed suggestion.


Top
 Profile  
 
PostPosted: Tue Apr 18, 2017 6:02 pm 
Retro Guru

Joined: Sat Apr 16, 2016 12:30 pm
Posts: 692
I'll take some snaps later if i can get into the shed. My old man is over tomorrow so I'll pick his brains in terms of what he would be happiest doing.


Top
 Profile  
 
 Post subject: Re: Re:
PostPosted: Tue Apr 18, 2017 6:06 pm 
Retro Guru

Joined: Sat Apr 16, 2016 12:30 pm
Posts: 692
xerxes wrote:


It might- are they any good?


Top
 Profile  
 
 Post subject: Re:
PostPosted: Tue Apr 18, 2017 6:19 pm 
Old School Grand Master
User avatar

Joined: Sun Mar 14, 2010 2:33 am
Posts: 3744
Location: Kentcestershire
I've no personal experience, but I think Wheels Manufacturing have a pretty good reputation for parts and tools.


Top
 Profile  
 
PostPosted: Wed Apr 19, 2017 7:25 pm 
Retro Guru

Joined: Sat Apr 16, 2016 12:30 pm
Posts: 692
Here we go:

Image2017-04-19_03-54-14 by sonofprent, on Flickr

Image2017-04-19_03-53-55 by sonofprent, on Flickr

Steps forward and back today- redrilled and tapped the one without a bushing- the ally is too soft to tighten completely. I need to get some imperial Allen keys to see whether the ones with bushings behind will tighten. If so I'll begrudgingly leave it as is - i still don't like it as getting the wheel on is a ballache due to the shitty way it has been lined up.

If that doesn't work I'm going to have some new bushings made and will drill out what is in there. Ill probably look for a different hanger too. Unfortunately champferring the frame out isn't an option, so it will be something of a hack whatever happens. I'd like a nice looking hack though, where the wheel can be taken off easily...


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 21 posts ]  Go to page 1, 2, 3  Next

All times are UTC [ DST ]


Who is online

Users browsing this forum: madjh, MSN [Bot], Retro Spud, unkleGsif and 26 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

About Us

Follow Retrobike

Other cool stuff

All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group