Numpty IM Bike Thread

Bike ponces only welcome if they don't speak in tongues

11,881 to 11,900 of 11,980 messages
01/08/2013 at 23:36

I have been out for a few rides on my new bik and noticed the chain is rubbing on the front derailleur when on the smaller chain ring and the higher gears at the back (smallest 3) - excuse the numpty like terminology this is all new to me. At one point today the chain actually came off when changing from the big to the smaller chain ring - this was not particularly fun especially as I was going pretty quick (for a newbie) A quick google throws up a few potential options, some of which I have tried, others of which i felt were a bit out of my depth. 

I know the obvious answer is take it back to the shop (Evans) but to be honest I have zero faith in them and if they did it badly once I reckon they won't do a much better job the second time. 

As they also didn't fit it properly I am taking it to a local bike shop on Saturday and I was going to ask them to sort it out - is this likely to be an expensive job?

Edited: 01/08/2013 at 23:36
Cheerful Dave    pirate
02/08/2013 at 05:48

A bit of chain rub is quite common when the chain is running across the extremes like that.  It's possible to adjust so that it doesn't happen but to be honest it's better to change down (or up) at the front before you get to that point - it's more efficient and saves wear on the chain if you avoid small ring/small cog and big ring/big cog combinations.

The chain coming off shouldn't happen but unless it's happening regularly I wouldn't bother taking it back just for that, they're unliely to find the cause of a one-off.  If it's a regular occurrence it could be that the limit screw is set incorrectly and the front derailleur is taking the chain too far across and off altogether. 

02/08/2013 at 08:28

Thank you for the reply

02/08/2013 at 11:18

+1 with CD

use your gears more effectively - if you work on the principle of keeping the chain line as straight as possible, then you're OK.

and get the LBS to check it out - a simple adjustment to the limit screws will do the job of stopping the chain dropping

02/08/2013 at 14:21

Thanks, all taken on board - and I shall try to put it into practice when I go out again tonight. I will ask them to look at it when I go to get it correctly fitted. Had it just been on the smallest gear I would have just ignored it but with it happening on 3 of them it was a bit more of a worry.

JD.    pirate
04/08/2013 at 16:45
fat buddha wrote (see)

Hi JD

sorry - can't really comment on what's wrong with the Michelins as I don't recall any issues when I rode their precursors.

when you say they "kick" - is this as you go round a bend?  I'm thinking here that it's the larger knobs on the edge "catching" on tarmac doing that. when you're riding in a straight line then it would be fine as you're on the smoother centre tread.  you probably wouldn't see any issues like this off road.  maybe you are just seeing something that isn't an issue but as they are very new to you, and a different pattern to the old ones, then it's a familiarity thing.

as for bulges - I'd always be suspicious of bulges in tyres but that will depend on how large and where.  MTB tyres are never fully smooth near the rims ime and it's maybe that they just need to settle in.   but if it's a bulge that is really protruding, then I'd question the build quality and get them replaced.

and I'd always go for folding tyres....

I should get my new steed by the weekend - looking forward to getting on the Downs on that  

Thanks FB.  the tyre bulges like a python that's eaten a rabbit.  it's wiggly too.  so looks very asymetrical when i spin it.  same with both wheels.  i guess it must be a fault with the tyres or perhaps my wheels are just too wide.

JD.
JD.    pirate
04/08/2013 at 16:48
Bouncing Barlist wrote (see)

Its a lesser spotted JD  

Hello

Guess youre just here scoping out the forum looking for the IM Austria 2015 10th anniverary thread

Maybe a 2016 reunion, i might be let out to train for my 40th year.  Hopefully there's an enforce BMI rule.

JD.
JD.    pirate
07/08/2013 at 22:59

I popped into Evan's today.  The kid there suggested overinflating the tyres to 80 psi to get the tyre to seat properly.  did that and it sprung out a little.  that seems to have done the trick as the tyres ran smoothly this evening.

JD.
Iron Pugsley    pirate
08/08/2013 at 10:09

working on the n+1 rule I have justified the purchase of a new bike.  The justification is that I will be amusing my 2 year old on a seat on the back.  The sub-text is that I need a bike for winter riding and some tame off road (defintely not mountains).

not planning to spend a huge amount and came across this http://www.decathlon.co.uk/rockrider-51-2013-mountain-bike-grey-white-id_8231773.html#User_opinion.  The reviews aren't great but looks like numpties who don't know how to tune gears.

seems a bargain - anyone have any experience or thoughts?

08/08/2013 at 11:04

personally I wouldn't go near it as I wouldn't trust the quality of materials on any bike selling new for less than £200 - Decathlon or not.  Decathlon do make some very good inexpensive bikes but they are around the £500 mark and of similar quality to other brands around £7-800.

but on the other hand at that price, what do you have to lose (bar £160)?  if it's just something to pootle around locally on with the kid on the back and take on the occasional track/canal path type ride it may be OK

but if you like a decent bike to ride on, I'd avoid

Iron Pugsley    pirate
08/08/2013 at 12:37

Thanks FB - that's kind of what I was thinking....

IronCat5    pirate
08/08/2013 at 22:30

Mrs Cat has one of those (I think, or a 5.2). It does the job for what she needs it for. I.e. cycling to the pool and family bike rides.

Caveat Emptor etc though. Gears were badly tuned.

08/08/2013 at 23:07

Hopefully this is the right (safe !) place to ask what I am sure is a daft question....

Why is it / how can a different saddle make such a difference ?

The reason I ask is that a friend and I recently rode bikes with Fizik Arione saddles and after about 40 miles found them incredibly painful.  We're both about 5'10 in height, about 11 stone and are used to riding further.

Would love to hear any thoughts or ideas about what to look for when looking for a new saddle.....

OrangeCannon kona-6    pirate
08/08/2013 at 23:44

the best saddle.is.one.that does not hurt.

its very personal

I love my ism adamo road but many others hate them.

19/08/2013 at 22:49

Any thoughts on the Trek Domanes? Looking at the 4.7  2014 WSD as I need the shorter top tube of the WSD to make tri bars an optifit bike fit wise. Is it worth upgrading thee wheels to aero ones? The shop seem to think I'd be better spending the money going up to the 5 series but that's a few hundred more than upgrading thee wheels. Or are the wheels that it comes with OK? 

From the point of a newbie with a decent but old 80's road bike already but it's a size top big. 

25/08/2013 at 16:30

Can I ask a silly question. Can i use zipp 808's on my  bike. Have a triple ring and 8 rings at the back (whatever that's called) Have got them on but the chain seems to be slipping in all but the biggest ring at the back. I'm sure I've put it on properly

WhizKid    pirate
25/08/2013 at 17:10

SS - zipp 808 standards are for a 10 speed chain setup and firecrest 808's are for 10 and 11 speed setups, now then you can play let's put spacers in game but I wouldn't recommended it as its not really designed for it and a bit of a bodge, you can also change the the free wheel hub where the cassette sits but this is even more of a ball ache so answer is yes and no... 

25/08/2013 at 18:28

SSnail - with respect to WK that's not true and we need more info to give you a meaningful answer.   

WhizKid    pirate
25/08/2013 at 18:59

Yeah er my bad I'm thinking like a idiot, giving bike advice while tired bad times..... A case of just adjusting the derailleur.... Waffling whiz is waffling apologies

25/08/2013 at 19:06

I can try and give more info but not really sure what I'm talking about.

Here goes....

It's a triple ring 50/39/30

The cassette at the back has 8 rings - the biggest has 25 teeth and the smallest has 12

It's a Trek bike about 5 years old. Any other info you need?

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