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TheInternet
Borekit Bruiser



Joined: 14 Dec 2010
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PostPosted: 15:06 - 01 Jan 2017    Post subject: Making bike narrower Reply with quote

Apologies for the basic question but is there a conventional or recommended way to reduce the width of the handlebars and mirrors?

I'd rather not cut the existing bars, are there standard replacements or is it better to modify another readily available set? Does lopping some off mean you cannot attach the bar ends?

Similarly, are there new/used mirrors that are preferred for this?

Current bike is CG but I'll likely want to do the same with it's replacement in due course.

Thanks
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Ste
Not Work Safe



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PostPosted: 15:17 - 01 Jan 2017    Post subject: Re: Making bike narrower Reply with quote

TheInternet wrote:
Apologies for the basic question but is there a conventional or recommended way to reduce the width of the handlebars and mirrors?

No there isn't.

Why are you wanting to make the bike narrower?
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Kickstart
The Oracle



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PostPosted: 15:17 - 01 Jan 2017    Post subject: Reply with quote

Hi

Should be able to find some narrower bars. With the end weight it depends on how they attach (some just use an expanding bung, others bolt into a thread in the bar). Tbh with a CG I suspect would be fine to just leave them off.

The bars often have a locating hole for the switchgear. If you trim the bars the hole will be in the wrong place. Similarly a lot of aftermarket bars do not have these locating holes. Most people just trim the pins off the switchgear.

All the best

Katy
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Howling TerrorOutOfOffice
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PostPosted: 15:23 - 01 Jan 2017    Post subject: Reply with quote

Live with it for a while, see if you end up forgetting about the cowhorns they fitted to the standard CG. Smile
Or if you do trim the bars don't take off too much.

Resale value may be affected.
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TheInternet
Borekit Bruiser



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PostPosted: 16:36 - 01 Jan 2017    Post subject: Re: Making bike narrower Reply with quote

Ste wrote:
Why are you wanting to make the bike narrower?

To fit it through London.
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TheInternet
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PostPosted: 16:39 - 01 Jan 2017    Post subject: Reply with quote

Howling Terror wrote:
Resale value may be affected.

Kickstart wrote:
The bars often have a locating hole for the switchgear.

For these reasons it sounds better to get a second set of bars to modify. Probably not worth the effort at present. I'll experiment with removing bar ends and moving mirrors to the point of uselessness.
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c_dug
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PostPosted: 18:29 - 01 Jan 2017    Post subject: Reply with quote

I entirely understand what you're trying to do. Narrowness is king in London, closely followed by turning circle, and height.

In the past I've gone mirrorless or ridden with a single bar end mirror, but I've never bothered tweeking the bars, too much hassle, and what you make up in narrowness you could lose in practicality (I bought my fazer with renthals fitted which reduce the width by a good couple of inches, but in return it is near impossible to go full lock on the bars due to trapping my fingers on the fairing).

In the end it's experience that counts for the most, my dad will get his K1300GT through central London traffic pretty much as quickly as I will, quicker on the roads he knows better. Practice makes perfect.

Edit: just to expand on that last point, I make up more time on a daily basis by knowing where gaps tend to open up in traffic, where you can sneakily avoid traffic lights, where you can cross a solid white with little chance of being caught etc...

I do 2 hours a day through London and I reckon I probably save somewhere in the region of an hour a week through smart filtering. I doubt being narrower saves me an hour a month.
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iooi
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PostPosted: 18:38 - 01 Jan 2017    Post subject: Re: Making bike narrower Reply with quote

TheInternet wrote:
Current bike is CG but I'll likely want to do the same with it's replacement in due course.

To fit it through London.


Look on the width of the bars as your safety zone.
Make them too narrow and you may well end up crushed between something Embarassed


If your bars are 2 foot wide, then you are really looking at gaps that are suicidal.

I have seen cyclists try gaps like that and the cars started moving and they ended up squashed Laughing
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Ste
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PostPosted: 19:01 - 01 Jan 2017    Post subject: Reply with quote

How to get across London quickly...

https://www.youtube.com/watch?v=w5TkSE_5GsE

Less than 25 minutes from Heathrow to New Scotland Yard.
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c_dug
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PostPosted: 19:09 - 01 Jan 2017    Post subject: Re: Making bike narrower Reply with quote

iooi wrote:
TheInternet wrote:
Current bike is CG but I'll likely want to do the same with it's replacement in due course.

To fit it through London.


Look on the width of the bars as your safety zone.
Make them too narrow and you may well end up crushed between something Embarassed


Maybe 5 years or so back I managed to get squished between the arse of two coaches, I hadn't taken into account the fact that the rear of the coach is a good 10 feet behind the back axle and swings out quite significantly on sharp turns.

My bar end mirror hooked into one of the external radiator vents, and I was essentially dragged a good 10-15 meters or so by the coach. I don't really know how I got unhooked, whether I wrenched the bars a bit, or hit the brakes or something. I didn't come off the bike in any case.

Probably one of my closest experiences to a properly nasty accident.
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TheInternet
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PostPosted: 19:31 - 01 Jan 2017    Post subject: Re: Making bike narrower Reply with quote

iooi wrote:
I have seen cyclists try gaps like that and the cars started moving and they ended up squashed Laughing

They were obviously not very good at it.
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kramdra
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PostPosted: 19:58 - 01 Jan 2017    Post subject: Reply with quote

Nothing wrong with the width of a standard cg. You just need more experience/confidence/ability.
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TheInternet
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PostPosted: 21:39 - 01 Jan 2017    Post subject: Reply with quote

kramdra wrote:
Nothing wrong with the width of a standard cg. You just need more experience/confidence/ability.

I'd agree with you with the exception that it's too bloody wide.
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Nobby the Bastard
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PostPosted: 22:14 - 01 Jan 2017    Post subject: Reply with quote

If you use the horn, main beam and rag the fuck out of the stationary bike, you find the gap gets wider, negating the need to make the bike narrower.
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smegballs
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PostPosted: 23:25 - 01 Jan 2017    Post subject: Reply with quote

The old MX bars on my bike were on ebay for a fiver delivered.

Get some old cheap bars, cut them up. If you no likey then you haven't lost anything of value.
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Commuter_Tim
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PostPosted: 02:14 - 02 Jan 2017    Post subject: Reply with quote

Nobby the Bastard wrote:
If you use the horn, main beam and rag the fuck out of the stationary bike, you find the gap gets wider, negating the need to make the bike narrower.

Ahhh, so that's how you got your forum name. Laughing

Making a CG thinner is hilarious though, it's practically a bicycle already.
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Pete.
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PostPosted: 02:51 - 02 Jan 2017    Post subject: Re: Making bike narrower Reply with quote

TheInternet wrote:
Ste wrote:
Why are you wanting to make the bike narrower?

To fit it through London.


Learn to plan your manouvers. I get along just fine and I have a bloody great cylinder stuck out each side. If you can't wiggle though on a CG it's not the bike's fault.
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mentalboy
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PostPosted: 02:56 - 02 Jan 2017    Post subject: Reply with quote

c_dug wrote:
I entirely understand what you're trying to do. Narrowness is king in London, closely followed by turning circle, and height.

In the end it's experience that counts for the most, my dad will get his K1300GT through central London traffic pretty much as quickly as I will, quicker on the roads he knows better. Practice makes perfect.



Was a tad interesting negotiating the 'big smoke' on my zzr1100 but not impossible, despite having full pannier set. It's better to trade off mirrors in scrapes than kneecaps/elbows which is what wil happen if ones steed is narrower than it's mount!!!
OP could rig up some kind of different mirror system but then you trade off a reasonable rear view aspect for a pair of shoulder blades and encounter aforementioned issues.
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TheInternet
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PostPosted: 10:14 - 02 Jan 2017    Post subject: Reply with quote

Commuter_Tim wrote:
Making a CG thinner is hilarious though, it's practically a bicycle already.

It appears that many here are (not unreasonably) looking at it from a motorcyclist's perspective hence making these sorts of statements, whereas the reality is it's over a foot wider than a push bike, that's 66% extra.


Last edited by TheInternet on 10:24 - 02 Jan 2017; edited 1 time in total
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TheInternet
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PostPosted: 10:22 - 02 Jan 2017    Post subject: Re: Making bike narrower Reply with quote

Pete. wrote:
Learn to plan your manouvers. I get along just fine and I have a bloody great cylinder stuck out each side. If you can't wiggle though on a CG it's not the bike's fault.

The issue is not in moving traffic, it's more typically negotiating half a km of mostly stationary, tightly packed traffic. Planning in these circumstances is largely irrelevant, whereas the bar/mirror width is the key factor governing amount and rate of progress.
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Ste
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PostPosted: 10:30 - 02 Jan 2017    Post subject: Reply with quote

TheInternet wrote:
the reality is it's over a foot wider than a push bike, that's 66% extra.

Oh yeah? Laughing

The bars on your CG are 5cm narrower than my pushbike. Wink
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TheInternet
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PostPosted: 10:46 - 02 Jan 2017    Post subject: Reply with quote

Ste wrote:
TheInternet wrote:
the reality is it's over a foot wider than a push bike, that's 66% extra.

The bars on your CG are 5cm narrower than my pushbike. Wink

I accept it is not true in all cases.

https://s13.postimg.org/n2zs2f55z/screenshot_71.jpgg
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Rogerborg
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PostPosted: 14:55 - 02 Jan 2017    Post subject: Reply with quote

Thread is tl;dr, but ignore any naysayers and riding gods who can break the laws of physics. You win Man Points for doing it on an unnecessarily wide bike, but they cannot actually be exchanged for prizes. Crying or Very sad

Just eBay any universal 21/22mm 7/8" bars in any width that you like. I've fitted narrower bars to every bike that I've owned, no problems[*], no regrets. I'm currently eyeing up the Enfield with a view to narrowing it even further pour le filtrage extrême.

[*] You may have to drill a hole for any locating screws, or re-route the cables slightly.
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Nobby the Bastard
Harley Gaydar



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PostPosted: 15:03 - 02 Jan 2017    Post subject: Reply with quote

Just how wide are the bars on a CG125? Admittedly it was a long time ago, but I passed my test on a CG125 and it seemed like a poxy little thing.

Anyway, for comparison purposes, my mountain bike has 25" bars and the exup, which I use for commuting daily, have, as best as I can tell, 28" bars.

If your bars are a foot wider than a typical pedal bike, they would be 3 feet wide....

I think I found the pedal bike you are comparing it to though

https://cyclecentre.files.wordpress.com/2012/07/cuda-1422-girls.jpg
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TheInternet
Borekit Bruiser



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PostPosted: 15:21 - 02 Jan 2017    Post subject: Reply with quote

Nobby the Bastard wrote:
1. Just how wide are the bars on a CG125?
2. Admittedly it was a long time ago, but I passed my test on a CG125 and it seemed like a poxy little thing.
3. my mountain bike has 25" bars
4. If your bars are a foot wider than a typical proper pedal bike, they would be 3 2.5 feet wide....
5. I think I found the pedal bike you are comparing it to though

1. ~75cm
2. It is.
3. Useless in traffic.
4. EFA
5. I did have one of those but I found it a bit intimidating so went for the CG instead.
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