25:9 gearing?

[medved]

Can anyone explain the benefits of 25:9 gearing to me for a trails bike?
I have a dialled race frame that essentially i want to take to the park or trails and have a bit more fin. It currently has 44:16 gearing and wondered what the benefit was if any and whether i should consider changing over?

[theRuler]

25:9 will feel pretty much the same as 44:16.

To get the 44:16 feel, use the ratio of 2.75:1

Some say that having tiny gearing allows for easier coping clearance when riding into a ramp.
Not sure about that, unless you are literally riding straight in.

Maybe if you are trials riding it helps for getting over barrels.

It does look cleaner though.

And it's not a "new school" thing either.  Rob Ridge rode small gearing in 1990's.  I am sure he wasn't alone.

[medved]

So aside from the grind/clearance aspect is there any other benefit other than looks?  Am I going to look a numpty turning up on 44:16 basically?

[Betty]

So aside from the grind/clearance aspect is there any other benefit other than looks?  Am I going to look a numpty turning up on 44:16 basically?

No and no

[john4130]

smaller gearing will be a little bit lighter weight with less material used and less chain links.

[gary67]

So aside from the grind/clearance aspect is there any other benefit other than looks?  Am I going to look a numpty turning up on 44:16 basically?

Who cares what you look like,fook em

[HARORIDER]

So aside from the grind/clearance aspect is there any other benefit other than looks?  Am I going to look a numpty turning up on 44:16 basically?

Who cares what you look like,fook em

agreed 

[Mdbh]

28/9 is where it's at!!

[evamedia]

So aside from the grind/clearance aspect is there any other benefit other than looks?  Am I going to look a numpty turning up on 44:16 basically?

I doubt it'll go unnoticed...

[pickle]

28/9 is where it's at!!

 

[lodge]

44 chain rings bend very easily and was a big problem on freestyle bikes in the late 80's and 90's, the micro chain rings are much more difficult to bend and as a bonus have much better clearance for disasters etc
Some believe you get more power from a big front sprocket (Sean Burns for one), personaly i'm not sure about that one.

[GavinDavis]

im running on 28/10 which is pretty fruity for quick starts, not as fast top end but still a good set up

[GaryN]

44 chain rings bend very easily and was a big problem on freestyle bikes in the late 80's and 90's, the micro chain rings are much more difficult to bend and as a bonus have much better clearance for disasters etc
Some believe you get more power from a big front sprocket (Sean Burns for one), personaly i'm not sure about that one.

Perhaps that explains the thinking behind the BSD 44T sprocket that is on my Hoffman D130, it's 10mm thick 

[Mdbh]

im running on 28/10 which is pretty fruity for quick starts, not as fast top end but still a good set up

Wow your a real man! And must have buns of steal!

[GavinDavis]

im running on 28/10 which is pretty fruity for quick starts, not as fast top end but still a good set up

Wow your a real man! And must have buns of steal!

  Damn right I am....These buns are bullet proof 

[darksunday]

25-9 isn't a nice gearing, too stressed,too crunchy...

27-10
30-12

[dodger]

28-11 here with a bash just in case i bail a grind or fancy a sprocket stall,i remember having a 10mm thick profile blackjack 1 faild feble stall and it was tacod   that was £40 gone in all of 2 hours it was never really round anyway tbf

[gordy]

As others have mentioned, the benefits of a micro gearing set up are . Reduced weight, increased coping clearance and a cleaner look. The down side is that chains can break more frequently, due to the chain having to wrap so tightly around the cassette. A larger gear on the back ensures it doesnt have to "loop around on itself".  This is the main reason why Racers haven't adopted micro gearing in the quest to reduce weight.

[Mdbh]

Or just buy a good chain my half link shadow cost over £30 but never had a problem! And I've bashed it a few times!

[kev-s]

i run 25-9 and as olly says run a good chain you will have no porbs, i  also run a shadow v2 half link chain for a year now on 25-9 with no probs  

[Nana]

One thing no ones mentioned here ............you go riding park with 44/16 well it would be like going clubbing with flairs and platforms on

All about the street creed 

While your at it wear ill fitting trousers and chain your wallet with a dog leash

[GavinDavis]

One thing no ones mentioned here ............you go riding park with 44/16 well it would be like going clubbing with flairs and platforms on

All about the street creed 

While your at it wear ill fitting trousers and chain your wallet with a dog leash

 ....Give it a few years and the 44t will come back full circle and will be the best thing in the world to the newbies lol.

[Dingobmxer]

im running on 28/10 which is pretty fruity for quick starts, not as fast top end but still a good set up

same here


Dingo

[region11]

I run a 30-12, because the hub i have wont take anything lower.  I do like the gearing. Although, not a lot of choice sprocketwise these days if you run anything over 28t.

[gib66]

its all fashion maybe?
25 rings are good for clearance .when i started riding parks i was 44/16 and yes i hit the copings every time lol.i roll in not jump in .anyways i got down to 33 /14 which is tad odd gearing but the 33 cleared most things fine .the one problem with 25/9 is the pressure on the chain and the cassette is masssive compared with larger gearing so they wont last as long/fail faster .
race wise /dirt jump id be around the 33 to 36 teeth for sure look good and neat and not too much pressure on them