Author Topic: skyway cassette repair (Read 13945 times)

stevepeanut · « **on:** March 02, 2013, 11:12 PM »

I rode my new build today, for all of 5 meters, and my chain started spinning the rear chainwheel around but I got no drive to the rear wheel. I took the rear whee to a local cycle shop and asked for a new freewheel. 5 minutes later they came back and said, it does not have a freewheel its a cassette type, and he mentioned the parts to repair it have probaby never been available since the wheels were made.

Does anyone know if its possible for a repair on this, or should I look for a new pair of wheels?

boofy44 · « **Reply #1 on:** March 02, 2013, 11:15 PM »

has the clip that holds it on fell off.

bobbbbsy · « **Reply #2 on:** March 02, 2013, 11:18 PM »

you mean coaster brake ? bike shops know fook all. get some pics up !

TwoBobRob · « **Reply #3 on:** March 02, 2013, 11:20 PM »

If it's a new new stylee one with an actual modern cassette hub (9tooth ish), then chances are it's over greased.

Cassette hubs need to be spotlessly clean with just a couple of drops of light oil in there - that's why all new school bikes are so fcuking noisy....

stevepeanut · « **Reply #4 on:** March 02, 2013, 11:24 PM »

The big circlip is still in place, I have no idea if this is a coaster brake, I don't think it is (but can't be certain), it doesn't have a bit of metal hanging off to bolt to the frame like coaster brakes that I have seen.

The wheels are a pair of alloy hubbed tuff 2s, I will put a pic up in the morning.

TwoBobRob · « **Reply #5 on:** March 02, 2013, 11:27 PM »

Ah, right.

In that case, I'd pop that clip off and inspect the cog. It's not unknown for the three small lugs to self destruct, therefore losing drive.

Benharcombe · « **Reply #6 on:** March 02, 2013, 11:33 PM »

Maybe completely wrong but has the spring snapped allowing the pawls to collapse meaning it'll spin without drive ?

My local bike shop looked at me weird when I took some old school mags in too I only wanted axles and I got all the talk of no longer made bits available lol

Good job for sites like this I suppose

bobbbbsy · « **Reply #7 on:** March 02, 2013, 11:34 PM »

exactly what i mean.. tools

stevepeanut · « **Reply #8 on:** March 02, 2013, 11:45 PM »

I will see if I can get that clip off and take a look. The fault is intermittant, it will ride for a few meters, then slip, then work, then slip.

garran · « **Reply #9 on:** March 03, 2013, 10:37 AM »

put a pic up steve

stevepeanut · « **Reply #10 on:** March 03, 2013, 01:26 PM »

I have took a few pictures to show the rear wheel hub. Heres a pic so the type can been seen.

I have managed to remove the big circlip and remove the rear sprocket.

This last pic shows the hub with the sprocket removed. If I spin the top part of the hub while pushing down into the wheel, it locks solid as it would when working correctly. If I spin it while pulling it away from the wheel it slips and jumps, this is whats happening when its being ridden. How do I strip the hub past this point? I can't see any thing else that screws or and more clips to remove. I tried to gently prise it off the wheel but it seems to be held in place, I don't want to try prising any harder unless this is the correct way to remove it.

john4130 · « **Reply #11 on:** March 03, 2013, 01:41 PM »

i'm not familiar with that hub but it looks like a coaster to me, have you tried unscrewing it? see if it turns anti-clockwise to remove the drive and clutch.

stevepeanut · « **Reply #12 on:** March 03, 2013, 01:47 PM »

Quote from: john4130 on March 03, 2013, 01:41 PM

i'm not familiar with that hub but it looks like a coaster to me, have you tried unscrewing it? see if it turns anti-clockwise to remove the drive and clutch.

Spinning anti clockwise is doing the same as when the bike freewheels, it just goes round forever clicking.

Gnarlyscoots · « **Reply #13 on:** March 03, 2013, 02:05 PM »

That's a cassette drive hub bro. Put a pic up of the other side of the hub. I'm not sure how these are put together but some are pressed in place over the bearings and ratchets, some feed though the hub centre and are secured on the opposite side

bobbbbsy · « **Reply #14 on:** March 03, 2013, 02:06 PM »

it should be possible to release the whole mechanism by loosening/removing the cone nut on the other side !

stevepeanut · « **Reply #15 on:** March 03, 2013, 02:14 PM »

This is the other side, I have tried turning it with a wrench and tried pulling it outwards with pliers, seems to be locked in somehow very tightly

bobbbbsy · « **Reply #16 on:** March 03, 2013, 02:20 PM »

thats prob supposed to be stationary and its the axle that turns.. $:-\$

stevepeanut · « **Reply #17 on:** March 03, 2013, 02:22 PM »

Quote from: bobbbbsy on March 03, 2013, 02:20 PM

thats prob supposed to be stationary and its the axle that turns.. $:-\$

yes I think that is never going to move, it looks like its been pressed into the hub, somehow the otherside that spins must come apart

Gnarlyscoots · « **Reply #18 on:** March 03, 2013, 02:24 PM »

Try not to turn the reverse side buddy, it will not move. Your cassette drive is pressed on I think. There are 2 small holes I see on the pic of the cassette hub, grease holes. I'm not sure but yo may be able to release the cassette like a car stereo with those holes. Use 2 centre punches in the holes and move it round slowly. It might release the cassette.

I will try and find a diagram later tonight as have got work soon

Gnarlyscoots · « **Reply #19 on:** March 03, 2013, 02:27 PM »

Actually, thinking on it, I think you need a special tool that mounts in those holes and you turn it clockwise while holding the cassette. It looks like an ACS freecoaster bolt when it comes out

Wipe all the grease off and take a top shot bro

bof · « **Reply #20 on:** March 03, 2013, 02:33 PM »

It looks like a sun tour cassette hub , I have one somewhere I will have to dig it out to remind me how it goes together. Mine has a welded sprocket on it so its no use but could be good for spares.

stevepeanut · « **Reply #21 on:** March 03, 2013, 02:37 PM »

Quote from: Londonhellboy on March 03, 2013, 02:27 PM

Actually, thinking on it, I think you need a special tool that mounts in those holes and you turn it clockwise while holding the cassette. It looks like an ACS freecoaster bolt when it comes out

Wipe all the grease off and take a top shot bro

Right I am with you, these are not holes that go right through when looked at close up, they are just 2 sort of half drilled holes, looks like it would need a tool to move it, similar to some freewheels, I will try and drift it round.

Gnarlyscoots · « **Reply #22 on:** March 03, 2013, 02:42 PM »

They are like this bro

stevepeanut · « **Reply #23 on:** March 03, 2013, 02:45 PM »

From that diagram and part, is it a left or right hand thread?

Gnarlyscoots · « **Reply #24 on:** March 03, 2013, 02:48 PM »

The ACS does up clockwise as it doesn't affect the drive or cones.

Author Topic: skyway cassette repair (Read 13945 times)

Benharcombe

bof