Author Topic: Is there a difference between an 855 and 856 swingarm? (Read 6246 times)

sammydog · « **on:** November 19, 2009, 05:29:36 pm »

Question is in the thread topic. Basically I have two swingarms (from an 855 and 955) but want to have disc tabs welded to one for use on the new 856 frame.

Can anyone think of any reasons why this won't work? I thought I had previously heard that the x55 swingarms were a bit weaker and shouldn't be used with disc brakes but I can't seem to verify this.

If there are differences in the swingarms, what are they?

kiwi · « **Reply #1 on:** November 20, 2009, 10:40:45 pm »

afaik know they are interchangeable as the x56 was an updated x55.That is not to say the swingarms are identical

sammydog · « **Reply #2 on:** November 21, 2009, 03:15:40 pm »

I know they are interchangeable so I am not too worried about that. I had read on here though that there are subtle differences that make the x56 a lot stronger for disc tabs.

I was hoping to find out what the differences are. I know my x55's came with x56 struts so I guess I am trying to find out if I have x56 swingarms as well. I can't seem to source a spare swingarm anyway so my hands are probably tied into working with what I have.

Willie_B · « **Reply #3 on:** November 21, 2009, 07:17:15 pm »

http://cgi.ebay.com/Girvin-Pro-Flex-Swingarm-755-855-955-756-856-NEW_W0QQitemZ220511852285QQcmdZViewItemQQptZCycling_Parts_Accessories?hash=item335787d6fd

sammydog · « **Reply #4 on:** November 22, 2009, 01:33:17 am »

Thanks for that, I've sent a message to see if the seller will post to Australia. Reading the add though, I don't think the seller will send to Australia. They do say

Quote

USA bidders ONLY!! No exceptions, please don't ask.

No one has bidded so maybe they will change their mind. Its perfect for what I need.

Willie_B · « **Reply #5 on:** November 22, 2009, 04:19:26 am »

I can buy it and send it your way.

sammydog · « **Reply #6 on:** November 22, 2009, 12:52:14 pm »

Thanks willie, can you PM me you email.

sammydog · « **Reply #7 on:** November 23, 2009, 07:11:51 pm »

Thanks to Willie_B the swingarm issue is all sorted. Once it cicumnavigates the globe I'll get the disc tabs sorted.

WD Pro · « **Reply #8 on:** November 26, 2009, 04:38:24 am »

I have pictures of an 855 and the rear strut mounts more towards the centre of the arm then it does on my 856

Colin · « **Reply #9 on:** November 26, 2009, 05:47:41 am »

Hmmmm,.......... sure it's an 855?

show us the pictures................

Col.

Spokes · « **Reply #10 on:** November 26, 2009, 09:51:57 am »

Maybe a picture of a 954 ?.

Chris

sammydog · « **Reply #11 on:** November 26, 2009, 11:46:30 am »

Quote from: Spokes on November 26, 2009, 09:51:57 am

Maybe a picture of a 954 ?.

Chris

954 was my first thought.

rapiddescent · « **Reply #12 on:** November 28, 2009, 04:18:15 pm »

the 855 swingarm suffered from cracks where the dropout sections met the main box section of the swingarm. If you look at an 856 or the 856.3289473 version then you'll see there's a much stronger join there. The 856 had quite a few bug fixes on the frame over the 855. the 855 sold way more in the USA, Eu sold more 856...

I was always really nervous about selling the X56HH for the 855 because you could literally move the dropout (with a disk brake adapter) with your fingers. This would lead to irregular pad wearing etc.

However, if you are welding on an adapter then just bulk it out and you'll be ok.

sammydog · « **Reply #13 on:** November 28, 2009, 05:09:29 pm »

Going off the pictures, I am pretty sure the new one on the way is an x56 swingarm, so hopefully its all good.

Funny with the weak points on the x55 swingarms, mine actually cracked around the pivot mounts.

WD Pro · « **Reply #14 on:** December 16, 2009, 04:49:02 am »

Quote from: WD Pro on November 26, 2009, 04:38:24 am

I have pictures of an 855 and the rear strut mounts more towards the centre of the arm then it does on my 856

Quote from: Colin on November 26, 2009, 05:47:41 am

Hmmmm,.......... sure it's an 855?

show us the pictures................

Col.

I forgot about this sorry and don’t visit here often …

Note the fore / aft positioning of the rear strut mounts :

955 :

855 :

My 856 :

Actually a more similar position to the 755 :

Hope that helps,

WD

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Author Topic: Is there a difference between an 855 and 856 swingarm? (Read 6246 times)