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Ellsworth Isis Bike Review
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Ellsworth Isis Bike Review

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Ellsworth Isis Bike Review

Page Type: Article

 

Page By: Andy Livo

Created/Edited: Dec 8, 2008 / Feb 1, 2011

Object ID: 269024

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Page Score: 77.48%  - 8 Votes 

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Overview

The Ellsworth Isis is a single pivot machine with a monocoque structure. The top tube and down tube eminate from the monocoque and have almost a semicircular profile. The design is beefy and the frame very stiff with plenty of standover height. The pivot is just above the chain line which means that there is virtually no bob in the granny ring when climbing. 4" of plush travel is now handled by a Fox RP23 shox. The SL version is shot peened and anodised for a durable finish. I paid £1000 for this frame in 2001. The longish top tube (23.2") make it very predictable and the high bottom bracket (12.9") means it will go over some big stuff without grounding.

Strengths

 
CNC Pivot
 
 
Look at the Machining on That!
 




Bullet proof design. Simplicity of design means pretty well zero maintainance unlike other full suspension bike designs e.g. only renewed pivot bearings after 5 years! Shock is out of the firing line of mud. Shot peened looks good even after 8 years of abuse! Lifetime warranty. Beautiful CNC work on the pivot and drop outs. Climbs like a mountain goat.

Weaknesses

Slight loss in rear suspension on rear braking which all single pivots are prone to. Cable routing is not for hydraulics. Quite hard to physically replace the bearings without bearing drifts etc.

Bottom Line

This bike is awesome. After riding loads of others I come back to my Isis and think this is the best bike around. It has had a right hammering off the worst that the UK can throw at it. All mountain, no problem it takes it, coping with insane downhills off Helvellyn etc. XC, it rails corners and berms on man made trails.

The Isis will get up anything that you have the legs for. There's stuff I've climbed and thought how did I get up that? The ride is stable and predictable. I honestly don't know how I could descend faster on any other bike. When I changed to discs I bought a 135mm rotor for the back. This was a big mistake as it was not powerful enough to stop me and kept overheating. I changed it for 165mm which did the trick. I have a lock out on the rear shox and never use it, don't need to!

This bike is an all round great bike, which will do everything you want it to do. Fast dowhill, XC, slow rolling over steep rocks. It's bullet proof design is made to last and 8 years on it is as good, if not better, than the competition.

So why Ellsworth stopped making this bike I'll never know! I just know I'm glad I bought one!!

Images

The Ellsworth Isis in 2009The Ellsworth Isis 2001Ellsworth IsisI Love This Bike!!Head of Riggindale Beck - Looking to UllswaterCNC PivotEllsworth Isis
Ellsworth IsisJoker Spec from 2001Joker/Isis Manual 2002Joker/Isis Manual 2002

Comments


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Viewing: 1-5 of 5

TreetrimmerISIS

Treetrimmer

Voted 10/10

Very nice ride. I can tell you really enjoy that bike by the way it looks today after years of riding. I just purchased a brand new 2002 ISIS frame last week. It arrived today. One thing I noticed was where the seat stays pass the seat tube there is an offset between the right and left horizontal distance between each seat stay (from the seat tube). So if your looking down the seat tube to the bottom bracket the seat stays are not centered (on the seat tube). Do you know if this is normal?

Treetrimmer
Posted Dec 8, 2008 10:31 pm

Andy LivoRe: ISIS

Andy Livo

Hasn't voted

Glad to hear you can still get an Isis. Just had a look at mine and there is no offset as you describe. I have taken some shots and posted them for you to see. They are attached to the review. Not sure whether the design changed or not. Mine looks dead central across the seat tube. Does your rear wheel line up in the correct position?
Posted Dec 9, 2008 2:41 pm

TreetrimmerRe: ISIS

Treetrimmer

Voted 10/10

I have not put a wheel on it yet. The design you have looks to be exact. I am contacting Ellsworth and the seller to see if they can do something about it. The frame never been ridden so, maybe its a factory defect??? Thanks for the pics, I will mount a wheel tonight and see what it looks like.
Posted Dec 9, 2008 4:11 pm

Andy LivoRe: ISIS

Andy Livo

Hasn't voted

Just been thinking. Has the pivot bolt come lose causing movement at that point? Hope you get it sorted. Where did you get it from? I have heard that Ellsworth are good.
Posted Dec 9, 2008 5:02 pm

TreetrimmerRe: ISIS

Treetrimmer

Voted 10/10

This frame was an ebay find. The seller is a bike shop in Montana USA. And the description said it was brand new and had been in their shop since 2002. It may have been built up at one time. I see traces where a wheel and rear brake was installed, But it really looks brand new. Not a scratch on it. Still no reply from Ellsworth or the seller... I will put up some pics later.
Posted Dec 10, 2008 12:23 am

Viewing: 1-5 of 5