|
|
Post by siegeworks on May 4, 2015 21:24:18 GMT
Hi Guys,
I've not been on in a while. I'd like to commend everyone on all the new pics that have gone up. some very lovely machines! Since the weather has improved I've got back on with my 600EX. the plan is to ride this at L'eroica Brittannia and then at Ride100. I'm riding the 100 in aid of UNICEF who are working hard in Nepal and elsewhere around the world to help protect the lives of vulnerable children. If anyone wants to help with my funding target you can do so here with a big thank you from me! I've got lots of pennies to raise between now and August so really appreciate anything you can spare.
Anyway the bike, here it is! I had to learn how to rebuild a wheel from scratch after I found a crack in the rear wheel rim so I'm pretty happy with this build as a whole. I was lucky enough to have a single matching Mavic E3 rim on another bike. There's a couple of parts for too much money on ebay to make this totally original like the chain and tyres but I may not go that far. Clement tyres from the 80s command a bit of a premium! Having said this I didn't actually mean to go for red tyres I just put them on as they were all I had going. Although not particularly vintage they may end up staying as they go well with the graphics.
There lots of development pics on my instagram if you want to see more. I'm still to ride this anywhere at all. I fitted the tyres and set the brakes up today then the rain came! Typical English weather!
|
|
|
|
Post by 54roadie on May 5, 2015 3:03:15 GMT
That's a very nice bike. You're right about the red tires matching up with the graphics.
|
|
|
|
Post by siegeworks on May 7, 2015 10:11:37 GMT
Cheers 54roadie, I was able to take it up and down the road last night before the bad weather set in. It rides so well apart from a little bit of chain slip, will have to track down the problem there. I hope the freewheel is not waring out! Roll on the weekend and some sunshine!  |
|
|
|
Post by velocipete on May 7, 2015 10:59:34 GMT
That's a good job you've done there! The chain slip may have just been the freewheel tightening after the wheel rebuild.
Fingers crossed.
Cheers,
Pete.
|
|
|
|
Post by cusqueno on May 7, 2015 11:59:02 GMT
Pete - not a freewheel, it's got a UniGlide free hub - see close-up pictures on Instagram. Slipping: If the cogs aren't new and the chain is, I'd suggest you are having the same problem as I am getting on the smallest cog of my 600ax. If both are new (and judging from the quality of your build I'm guessing they are), perhaps you could shorten the chain a bit? Or increase the tension in the cage bearing spring if possible? Is the slipping happening on all gears or just the smallest cog(s)?
It is possible for the freewheel mechanism to wear out. I had a Viscount Aerospace 400 in which the pawls disintegrated and wedged the mechanism solid, giving the interesting experience of riding a multi-geared fixie. But that was a very early version of the UG free hub. It looks as though yours is a later one and if necessary, you can fit a new (NOS) free hub unit - quite possibly even a modern HyperGlide one, if you really want to.
|
|
|
|
Post by siegeworks on May 7, 2015 12:55:08 GMT
Yeah uniglide freehub is right. I'm thinking it could be chain tension too so I might see what removing a piece will do. If it's a good evening I will take it up and down the road and see what's what. I think the slip is happening on more than the first cog and it did feel like chain movement but in the dying light the other evening I couldn't be sure. The cassette is used but in good condition, the chain is new, I also detected no problems with the freehub when I had it off the wheel. Thanks for the advice guys |
|
|
|
Post by velocipete on May 7, 2015 15:43:30 GMT
OOps,I didn't see the instagram link.Damn colour vision problems!
Cheers,
Pete.
|
|
|
|
Post by siegeworks on May 27, 2015 21:57:11 GMT
Need some advice now chaps, Still got chain slip unfortunately  I just put on an original NOS period correct uniglide chain to match the cassette and fully serviced the derailleur as its top and bottom coil springs were sticking a bit. Neither of these actions have fixed the problem. I can ride the bike in top and bottom gears on the rear cassette but the 4 gears in between slip with every crank of the pedals. The cassette does not look excessively warn but when observed in motion it looks like the chain does not bed in when force is applied, it rides over the cog then slips. Almost as if there is a ratio problem and the chain is entering the cassette in the wrong position. I have 2 more things to try to pin down the issue. 1 is to put the rear wheel on a different bike and see if the cassette exhibits the same problem and the other is to swap out the derailleur for an identical one I have in stock and see if there is perhaps some side to side play I can't observe from the riding position. Any thoughts on this would be really appreciated. L'eroica is soon and I need this bike to work. Thanks in advance |
|
|
|
Post by triitout on May 28, 2015 0:07:53 GMT
Had a similar problem with my Uniglide on a Vitus. Do you have index or friction shifting? If you have index shifting (where it clicks into each gear) it may just be a derailluer adjustment. Unlike friction shifting where you find the right spot, with index, the derailluer finds whatever it's adjusted for which may not be right. Worth a look at that.
|
|
|
|
Post by siegeworks on May 28, 2015 9:42:47 GMT
Thanks for the advice but I have friction shifters, this leads me to suspect the possibility of some play in the derailleur. It has a slight wiggle to it but nothing I would think is concerning. I'm going to try my two last options tonight plus another I have just thought of. I have a lower ratio uniglide cassette. No good for cross county but will work for testing out if the cassette is the issue or if there is an underlying problem with the freehub.
Why can this just be easy! lol
|
|
bendo
Viscount
Posts: 538 
|
Post by bendo on May 28, 2015 11:50:10 GMT
If it were my bike would keep playing around with chain tension, i.e. take another link out. It looks like you've got plenty to play with there. BTW beautiful groupset. Love those cranks especially. b
PS - I got such a shock when one of your instagram photos started to move! It was like the birth of motion pictures all over again!
|
|
|
|
Post by siegeworks on May 28, 2015 12:04:27 GMT
Hi Bendo, yeah ignore the chain tension in the images up top. I hadn't adjusted it to the correct length back then. It's chain is now an original gold and black new old stock uniglide. I thought that the modern Shimano 51x might be slipping due to compatibility issues. The chain I now have is the one the bike would have come with. Still no joy so I've got 3 more things to check out. Hopefully one of them will yield some results. I've added the chain to instagram so you can see. I do like the video feature, makes it all a bit more interesting.
|
|
|
|
Post by velocipete on May 28, 2015 12:37:40 GMT
Are you still running the rear mech outer cable under the cassette.
If so reroute it over the cassette,where it should go.That will
hopefully solve your problem.
Cheers,
Pete.
|
|
|
|
Post by siegeworks on May 28, 2015 13:26:41 GMT
Are you still running the rear mech outer cable under the cassette. If so reroute it over the cassette,where it should go.That will hopefully solve your problem. Cheers, Pete. Hi Pete, Thanks but no, that was just a small oversight, I was cleaning and refitting the coil springs on the derailleur at the same time as doing the chain and got it caught. I rectified it right away.
|
|
|
|
Post by cusqueno on May 28, 2015 15:07:02 GMT
Have you got enough tension in the torque spring on the cage? (i.e. trying to turn the cage.) I haven't checked the 600ex, but on most Shimano RDs of that vintage, the stop simply unscrews and you can twist the cage a bit further (possibly another full turn?) against the spring before re-fitting the stop. My 600ex set-up has never given me any trouble, but I have never tried to take it apart and re-build it ...
(BTW - possibly a useful tip for picking up cheap vintage RDs: I bought an early Deore long-cage on eBay where the seller had been honest and said he thought that the spring was broken or faulty. In fact, it just needed the treatment described above to be fine.)
|
|
|
|
Post by 54roadie on May 28, 2015 16:04:44 GMT
When you switch the wheel to a different bike, you are changing two things at once - the RD and the chain. If it works, I'd test each separately. With that NOS chain, that shouldn't be the issue, but...
When installing that NOS chain, did you perhaps leave a pin out a bit too far? I did that recently and it really screwed things up. I also recently missed a nub on the derailleur when routing the cable and the derailleur simply refused to work. that was a Rival front, but something like that might be worth looking at.
And the advice from Bendo, Pete and Cusqueno should likely get you there first.
Good luck,
Frank
|
|
|
|
Post by siegeworks on May 29, 2015 21:34:52 GMT
Thanks for all the good advice guys, I've just fixed it!!! The answer comes with a warning though.
I swapped the rear wheel onto another bike and it slipped just the same so it had to be the cassette or the freehub.
I then took off the cassette and put back on the lower ratio original cassette the bike came with. I got instant alarm bells before I even fitted it. I had not cleaned or examined the original cassette I just put it to one side. Once I had cleared the crud off it was clear how good the quality of it was. It made the hub I was running look like garbage. I fitted it and the problem went away instantly.
I bought the now useless cassette under the understanding it was a 600EX cassette. I wanted a wider ratio to deal with the hills at Eroica and ride 100. I now believe it's a cheap poor quality (all be it vintage) alternative.
This is a warning to be sure of what you are buying. There are a large number of cassettes on Ebay claiming to be something they may not actually be as something like a 600EX commands cash. I recon I got done!!
Anyway for the time being I'll stick with what I've got and dig in for the hills. I'm going out on it tomorrow. cant wait!
Thanks again!
|
|
Jem
Viscount
?
Posts: 3,389
|
Post by Jem on May 29, 2015 22:37:51 GMT
I wanted a wider ratio to deal with the hills at Eroica I think a few of us were/are having that thought. There's a bike jumble in Sheffield tomorrow- still time to pick up a small front ring that might fit, and live with the 28 teeth on the back (or whatever you have?) |
|
|
|
Post by siegeworks on May 30, 2015 21:13:31 GMT
Did 30 miles today on the small cassette. Rides brilliantly. It's tough on the hills but it didn't stop me. It probably made me quicker as you have to stand on the pedals to get things moving.
|
|
