Chainline - does this seem legit?

[Rouxenator]

Upgraded to a SRAM HX GXP 1x crank yesterday and while everything works fine I am a bit concerned about the chainline, especially when on the biggest (42t) gear at the back. 

 

 

Does that seem right?

[Saag]

Fwiw...I used a 6mm offset chainring to get mine more straight (direct mount). My friend just did his upgrade on Monday and his chainline looks a lot lime yours. The mechanic (a pro team mechanic) said it can be made better with spacers but it is not worth the bother. With mine I can back pedal and it stays on the same cog, with his it jumps down.

So maybe ride it and decide.

 

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[Rouxenator]

Only had it on 11km of tar this morning, planning to take it offroad after work so then I'll see how it goes. Not too keen on spacers, I just don't understand why they would build a 1x specific crank and have the chainline out that far.

[Shebeen]

digging the hosepipe!

 

but ja, that looks too squiff

[popcorn_skollie]

I'll be more concerned about those pedals

[Saag]

The chainline might cause excesive wear on the components, the reason why I changed from the 0mm offset to 6mm.

 

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[MTBeer]

all I see is a hosepipe...

[Rouxenator]

digging the hosepipe!

 

but ja, that looks too squiff

 

 

I'll be more concerned about those pedals

 

 

all I see is a hosepipe...

That hosepipe is the best chain slap you'll ever get.

 

I'm riding those Wellgo flats because my Saint flats are getting a service. Flat pedals FTW!

[Wolf Lyle]

one of the hardest things to try photograph.. a chain line  

[Rouxenator]

one of the hardest things to try photograph.. a chain line  

Yup, very hard. Much easier to take pics of hosepipes and flat pedals. 

[JXV]

Upgraded to a SRAM HX GXP 1x crank yesterday and while everything works fine I am a bit concerned about the chainline, especially when on the biggest (42t) gear at the back.

 

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Does that seem right?

Nice clear pics. What rear cog is it on when the chain is dead straight? Should be on the middle, 5th or 6th from small. If it makes a noise when in granny then it is also wearing fast.

 

You can bring the chainring inboard by putting spacer washers between spider and ring. What type of chainring is fitted?

 

You may also be able to move your BB spacer to the non-drive side.

 

If you space it in too far you can tell because the chain will start clicking against the shift ramps when you are in your smaller cogs at the back and no amount of fiddling with shifter cable adjustments will fix it 'cos that ticking noise comes from the top of the cog as the chain lifts off it.

 

Suggest you go on SRAM's site and look up the chainline specs for your old and new cranks as a starting point. It will tell you if you should consider doing anything.

 

Final check.... is your rear wheel correctly aligned and cassette properly fitted. Some freewheel hubs need spacer rings under the cassette.

 

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[PeterF]

Try to get your chainline right on the cog that you spend the most time in, usually the 15 or 16t.

[Kalahari Vegmot]

I'm liking that hosepipe!

It looks like a pro bodge...

 

But probably works better than the 'ol inner tube...

[Long Wheel Base]

What would the weight advantage be between a hosepipe and a old tube?

"Asking for a friend" ????

Enjoy the 1x, hope you come right with the alignment. Dropping a chain with a derailleur isn't too bad but on 1x it's a ball ache.

 

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[Heel Drop]

digging the hosepipe!

 

but ja, that looks too squiff

I have NOTICED it , wont say I dig it though - so many better options then a hosepipe

[Rouxenator]

I should add that I have been riding 1x for two years now, first 1x9 and then 1x10. I have always used the normal triple crank that came with the bike however my current bike, a 2014 Sola 1, came with a SLX double. 

 

Having tried a triple Deore crank on it with a 34t in the middle did not help much which I why I put my hopes on this single crank. Not too fond of the spacer idea though. The only time I ever dropped the chain was with a Rapide NW. Never with any other rings. 

 

About the hosepipe, I have broken many a neoprene chain slap and inner tube does not last as the hosepipe. It really is the Gillette of chain stay protection - the best a man can get.