double ring and bash set up

gt si

hi all, just after a bit of advice really, im currently running an xt chainset but want to convert to a double ring and bash guard set up as i dont use the big ring much, what are my options on products to buy to convert , as there are that many on the market, some advice would be really usefull. i have a gt i drive 5 3.0, its a crackin bike, with loads of upgrades, and i love it but feel like it would be much better set up this way, i also want to run a chain device to stop my chain flapping around! cheers chaps and chapess'es

Anonymous

If you want a twin ring + bash, then all you really need is something like an e.thirteen "supercharger" bashring.
It replaces your outer chainring with a super-solid bashring, and also comes with the necessary longer chainring bolts.

If you also want a chain tensioner, then have a look at blackspire's "stinger" chain tensioner. You can get one that fits into the BB, and they work a treat.

nicklouse

an outer bash/guide ring and a bottom roller work well.

bottom roller sitting may be fun.

RealMan

Anyone know what a blackspire stinger weighs?

Anonymous

does anyone care?

(if you do, it's not a lot)

RealMan

I heard that some of the e13 things were like 1-2lbs in weight, which is a lot. Wouldn't put that weight on my bike without some thought.

Anonymous

Well I'm a big, powerful monster of a man, and couldn;t give a rat's arse about a couple of pounds. My bashguard is there to save the transmission from impacts when riding hard, not to win XC races.
Are you really a "real man", RealMan?

RealMan

Depends on how you define "real" and "man"

Your bikes hardly a lightweight xc racer in the first place, so I can agree with you that 1 or 2 lbs wont make much of a difference to your bike.

Are you running the supercharger and stinger together?

robertpb

I have a Raceface 34t bashguard, tougher than my old boots and weighs less than 200g.

Anonymous

RealMan wrote:

Are you running the supercharger and stinger together?

Yep, and it works really well. Haven't droppen the chain at all in the fortnight since the stinger's been on.

rhyko7

buy the chainwheels seperate and keep your xt cranks running.
you may have to replace chain and cassette to work with new chainrings mind if your unlucky.
dude just get a cheap bash guard, i have the standard shimano one its like a dense plastic as i imagine the pricey ones are, its just a guard whats the pint of spending sh*t loads on something that doesnt really do anything other than stop the chain coming off.
as for the chain guide, i have no idea, i thought about getting one before but then set up my front mech in such a way that it keeps the chain on when in the big gear,

another tip for you, rather than sticking to the standard 22 32 or 34 gearing, put a 36 tooth on for your middle ring, its much better for descending and the gears work just as well, thats how ive set mine up. also when you are not using your big outer ring you can take a link or two out of the chain and this gives you a bit more chain tension, another thing: you can run a short cage rear mech which also improves the tension and gives quicker shifting, on ebay slx short cage rear mech can be found for 30£ new

hope that helped a bit, ive given away all my secrets lol

Anonymous

you'll need a medium cage rear mech if you have a twin ring setup - generally speaking.
Although obviously, a long cage one will work fine too.

Short cage is only really suited to single ring setups.

grumsta

Stinger weighs a whole 90g.

Pretty easy to replace the big ring with a bash, I agree about maybe getting a 36t ring for the middle though, that's what I've done and it is better.

rhyko7

yeehaamcgee wrote:

you'll need a medium cage rear mech if you have a twin ring setup - generally speaking.
Although obviously, a long cage one will work fine too.

Short cage is only really suited to single ring setups.

shimano no longer make a short cage and their medium cage is now a called the short cage (SG), i know thats the case with the SLX cos i bought one

Anonymous

rhyko7 wrote:

shimano no longer make a short cage and their medium cage is now a called the short cage (SG), i know thats the case with the SLX cos i bought one

O really?
Shimano Saint mech, medium and short cage

Shimano SLX medium and long cage

Shimano XT medium and long cage

XT Shadow medium and long
etc etc.

EDITED:
Actually, I don't think they ever made a short cage MTB mech until Saint, lots of my "hardcore" DH friends used to ride road mechs. Saint, naturally is short cage, for DH racing.

robertpb

Rhyko7 wrote
dude just get a cheap bash guard, i have the standard shimano one its like a dense plastic as i imagine the pricey ones are, its just a guard whats the pint of spending sh*t loads on something that doesnt really do anything other than stop the chain coming off.


There's me thinking that my nice solid alloy Raceface bashguard was for protecting my chainring from being well, bashed.

All that time it's been keeping my chain that didn't fall off from falling off.

largephil

Say I bought an e13 chain guide and bash, is it a fairly easy job to fit?

Is it straight forward to adjust the front mech to suit the 2 ring set up? (I'm rubbish with setting gears)

nicklouse

largephil wrote:

Say I bought an e13 chain guide and bash, is it a fairly easy job to fit?

Is it straight forward to adjust the front mech to suit the 2 ring set up? (I'm rubbish with setting gears)

might be.

depends on which you get and what the bike is. crank off/ crank off bb out....

nothing to do to the mech other than move the outer stop screw if you keep the same rings. Oh and the chain will need shortening.

largephil

Thx,

Probably alot less hastle just letting my LBS do this mod, I'd make a right mess no doubt. A worth while job though, I never use my large chain ring and am sick of loosing my chain whilst in mid flow on the trail.

Anonymous

Largephil, it generally is a very simple job.

rhyko7

yeehaamcgee wrote:

rhyko7 wrote:

shimano no longer make a short cage and their medium cage is now a called the short cage (SG), i know thats the case with the SLX cos i bought one

O really?
Shimano Saint mech, medium and short cage

Shimano SLX medium and long cage

Shimano XT medium and long cage

XT Shadow medium and long
etc etc.

EDITED:
Actually, I don't think they ever made a short cage MTB mech until Saint, lots of my "hardcore" DH friends used to ride road mechs. Saint, naturally is short cage, for DH racing.

sorry its now called "GS" not "SG" like i said, look it up on shimanos website! there is no longer a short one and the medium is now the "GS" just like i said, some shops will call it medium some will call it short but there are only two versions now GS and SGS. the GS is a medium and not a short, although some shops will call it a short-i know its confusing
thers no need to turn this into a huge debate, i found this out by researching it when i wanted a medium slx rear mech. this may just be the SLX mech then, i read this on another forum-damn hippies lol

rhyko7

robertpb wrote:

Rhyko7 wrote
dude just get a cheap bash guard, i have the standard shimano one its like a dense plastic as i imagine the pricey ones are, its just a guard whats the pint of spending sh*t loads on something that doesnt really do anything other than stop the chain coming off.


There's me thinking that my nice solid alloy Raceface bashguard was for protecting my chainring from being well, bashed.

All that time it's been keeping my chain that didn't fall off from falling off.

haha ok i thought it being called bashguard made that bit obvious lol,didnt realise i had to state what else the bash gurads main function was. so long as its between the rock and chainring, it doesnt really matter how much it costs, and it does stop the chain bouncing off to that side, im assuming you have a chain guide or are lucky then if your chain never bounces off.

i stand by what i said, there is no point on spending so much money on something that doesnt really do anything other than STOP THE CHAINWHEEL GETTING BASHED, and stop the chain falling off! if you have an expensive alloy one then wow thats nice for you, but i dont think its worth the money unless it makes nice coffee or sumin-hey thats just my opinion, you are entitled to yours, but dont be such a poo monkey about it!
size is important tho, the bash guard needs to be a good 15mm bigger than chain wheel to fuly protect it or you can still smack it from strange angles

i just looked at chain reaction and my bashguard is 60£ -what a f*cking joke! its a machined bit of toughened plastic with a couple of inserts.shimano must be making a killing on these lol. for that price i would probably rather the alloy one lol.
there must be cheaper ones that are decent tho, like i said its a simple device and shudnt cost much.
-regards mr contradiction!
to save some pounds i advise buy one of these:

http://www.parker-international.co.uk/1 ... n=pid11454

why is everyone so aggressive and argumentative on here?!? try to help a guy and well.....

Anonymous

SS = short cage
GS = medium cage
SGS = long cage.
Like I said, they didn't make a mountain bike short cage mech, until the Saint.

rhyko7

yeehaamcgee wrote:

SS = short cage
GS = medium cage
SGS = long cage.
Like I said, they didn't make a mountain bike short cage mech, until the Saint.

ok cheers
glad thats cleared up lol
what they said on the other forum seems to be BS.
any idea what the S and the G iniitials stand for?

Anonymous

No idea, sorry. Any deduction I could make is blown out of the water by short being SS and long being SGS.

The only thing I can make out is that S can't possibly mean "short"

el loco pollo

I would go for a plastic bash, not a metal one. My original bash was alloy and became rough and sharp, which is not great for your ankle bones