lovetoride1111

Ok Have lot to explain here.

I have a relatively new ( a year with minimal use ) set up IE : Front chain ring , rear 11 speed Edco Monoblock , new rear deraillieur , OSPS , new chain. .
Everything has worked beautiful until a couple things recently. 1. I took apart the OSPS to look at ceramic bearings put back together and everything smooth. But before that i had brought wheel to be trued. I noticed freehub was not spinning free as it was . When I went back to shop and asked if they pulled the freehub they said no .. When I got home I pulled it and cleaned and put it back and it seemed to spin easier ..
The problem I am encountering : When I jam on the pedals the chain slips and catches somewhere different. The first time it happened I almost went down hard because of the slip, it completely freaked me out . I have tried adjusting the adjustments , I have tightened and loosened the freewheel , tried adjusting barrel screw , looked if derrailiuer post was bent , doesn't appear to be . Now I learned something new last weeks which is a clue for someone ( but not me , lol ) which is on about the TOP 4 gears it does not slip ever only when shifting past that point . Now also I can put it a smaller cog and pedal normal pressure and it stays but when add pressure it jumps crazy.
Anyone .....?
Thank you kindly.

sch

Possibly when the freehub was replaced one or more of the pawls/springs got mis-positioned and allows the freehub to slip.
Best you remove free hub and examine for this or any damage or out of place/missing parts (ie pawls or springs).
Also eyeball the ratchet steps in the wheel when you remove the freehub.

redlude97

sounds like your indexing is off

lovetoride1111

When I called the bike shop they said they never removed the freewheel/freehub . I did only later to see why the free hub was slow at spinning and just cleaned and sprayed some wd40 . I think I will just replace it and see what happens I guess.. That part is definitely not new.

DaveSSS 

If the chain is new, but the sprockets are old, you may have nothing but ordinary new chain skip. It occurs usually on only one or two of the most used sprockets. Put a old chain on and it will probably work fine.

lovetoride1111

People are responding without reading here....

1. Done plently of indexing tests.
2. All is new components . Well except that freehub.

Shimagnolo

It may be that people do not know that "rear 11 speed Edco Monoblock" is a cassette.
I did not until I googled it.

lovetoride1111

I was just thinking , if this was the real issue , why would it only occur on 7 of the 11 gears ?

Cyclist0108

That isn't unique to this thread, if it makes you feel any better.

Cyclist0108

This is sometimes a symptom of a bent derailleur hanger and/or cage.

terrymorse 

9 times out of 10, a skipping chain under load with a new chain is caused by a worn cog. You probably used the lower gears more often, so those are the ones that are worn. Odds are good that replacing the cassette will solve the problem.

lovetoride1111

I am being to see noone is reading .

terrymorse 

I read what you wrote, which was "relatively new" components and a "new chain". Skipping then catching under hard load with a new chain is almost always a cog wear problem.

When a chain is worn, it doesn't take long to ruin your cogs. Did you check the "stretch" of the old chain before you disposed of it?

lovetoride1111

What you are suggesting I ran in to many years ago , this is different.

I have good quality chain, a new chromemoly edco monoblock cassette , it wont wear out in 10 years.

My issue only happens after the 4th gear.,

Kapusta

I was going to make a suggestion, but if you are going to be an @$$, then I won’t bother.

The advice here is worth every cent you payed for it.

AnkleWork

Unfortunately, I read your posts. They are contradictory and nonsensical. Please try again.

lovetoride1111

Oh brother . I see welp I tried looking for honest help , gave all I know clear as day info and now called an ******* . Wow !

terrymorse 

Not true. It doesn't matter if your cassette is made of the hardest steel made. If you use it with a worn chain, it will wear out in short order.

Throw a new cassette on there (pick a cheap one). If it doesn't skip under load, you have your answer: your fancy cassette is toast.

lovetoride1111

I dont know how to say or write any clearer about the issue then I already have ( where in the world are you getting your information, about my issue ,apparently not from me and going on and on repetitively about nothing to do with what I initially needed help with ? ) There is no old chain , no old cassette , its all installed at same time. My " fancy " cassette as you called it is one piece block carved out of chromemoly . That creates a super strong metal cassette . That is why mountain and bmx bikes were made out of it . My issue DID happen directly after wheel truing done at a shop , and took apart the OSPS and put back. .

Kapusta

What does OSPS stand for?

lovetoride1111

OSPS = Over Size Pulley System.

BengalCat

It is the number one most common curse found in all online forums.

As to the OP, even with all relatively new components, (which you have made clear), RD hanger bent or indexing is off for some reason are two possibilities.

terrymorse 

I'm getting my information from what you wrote:

"relatively new ... rear 11 speed Edco Monoblock" and "new chain". Since you stated that you have a "relatively new" cassette and a "new chain", I interpreted that to mean that you ran the cassette with a chain that you subsequently replaced.

There is essentially only one reason why a chain works fine under light load but skips in the driven cog under heavy load, and that is a pitch mismatch between the chain and the cog. This is not rocket science.

Terry Morse, BSME/MSME

Wilfred Laurier

English may not be OP's first language. If it is, he has no excuse. He did not at all write clearly what he had. I also read that he had a 'relatively new EDCO monoblock' and 'new chain'.

Also, he is ignorant about how cogs wear, and material science in general, and felt insulted that others don't share his ignorance.

mitchmellow62

To the OP: It is always difficult to interpret other's descriptions accurately. For instance, you tend to use the terms freewheel and freehub interchangeably and I am assuming you have a freehub. From what I get, I would certainly want the hanger alignment checked with the correct tool. It is very difficult to eyeball hanger alignment and a slight misalignment could cause symptoms similar to what is described. It might be telling to know if adjusting cable tension changed which cogs were involved or if you at any time experienced ghost/auto shifting.

I once destroyed a hanger and derailleur on a road bike(long cage 105) while on a tour. The only long cage derailleur the LBS had was a Deore. After finishing the rebuild they could not get the shifting right: ghost shifts and slips as the chain briefly rode between cogs. At home I had plenty of time to tinker and found that I needed to back the B screw all the way out to get consistent shifts in both directions. When your LBS had the wheel off, could they have made a B screw adjustment? In my case, the LBS made the B screw adjustment as they thought they should but it didn't work.

I really doubt that a freehub body would produce the symptoms you describe but "whatever turns you on just tickles me to death". Shimano (my assumption) freehubs are relatively cheap and replacement would essentially be no harm no foul.

In many similar vexing situations, I have found it best to start from the beginning. At a minimum, that would include checking hanger alignment, B screw adjustment, high and low limits, cable attachment (inadvertent, alternate attachment) and cable tension.

Also, if your problem started immediately after the work by the LBS I think they owe you a check. Most would be glad to do it. Good luck.