Agattu help needed

[HarryB]

Yes, this is the replacement wheel which for a short time had all 7 gears working. Because this hub had been ok. unlike the original hub which was always faulty, Lloyd at 50 cycles thought the problem must be other than the hub itself.
Am I right in thinking that it was only after changing the sprocket on your bike that you lost 6 and 7 gears?
At present, my local bike shop are going to talk to Lloyd directly - they believe I have another defective hub as they can find nothing wrong with the rest of the gear change mechanism.

No, 6 and 7 gears were definitely working after the sprocket was changed. Actually the external mechanism is extremely simply and you should be able to see the cable rotate the cassette pulley and that is connected directly to the internal hub assembly. The only problem could be that cassette pulley is not located onto the hub. I have had mine to pieces and it is definitely located and turning the hub internal gear assembly so there is a problem with the internals. I am beginning to think that either there is a faulty batch or they are very, very fragile (being a shimano product this seems very unlikely).

I have tried to be very gentle with the gear change i.e. not turning the pedals when changing gear, but there was a problem with the outer cable jumping out of its housing but it shouldn't have caused any problems. So much for less maintenance with a hub gear system.

 

[robert44]

No, 6 and 7 gears were definitely working after the sprocket was changed. Actually the external mechanism is extremely simply and you should be able to see the cable rotate the cassette pulley and that is connected directly to the internal hub assembly. The only problem could be that cassette pulley is not located onto the hub. I have had mine to pieces and it is definitely located and turning the hub internal gear assembly so there is a problem with the internals. I am beginning to think that either there is a faulty batch or they are very, very fragile (being a shimano product this seems very unlikely).

I have tried to be very gentle with the gear change i.e. not turning the pedals when changing gear, but there was a problem with the outer cable jumping out of its housing but it shouldn't have caused any problems. So much for less maintenance with a hub gear system.

Harry,
I'm a bit confused. Your previous posts suggest that on changing your sprocket, initially you had problems refitting the hub operating mechanism and when that was resolved, you then could not get 6/7 gears. Are you now saying that for a short while after this work your gears were ok and then you lost 6/7 gears?
50 cycles appear to think I'm the only one who has had a fully working hub malfunction. I thought that you've suffered a similar experience ie loss of 6/7 gears in what was an ok hub - albeit in different circumstances.
Like yourself, I pause pedalling when changing gear and all the gear change mechanism appears to be moving ok.

 

[stokepa31_mk2]

No, 6 and 7 gears were definitely working after the sprocket was changed. Actually the external mechanism is extremely simply and you should be able to see the cable rotate the cassette pulley and that is connected directly to the internal hub assembly. The only problem could be that cassette pulley is not located onto the hub. I have had mine to pieces and it is definitely located and turning the hub internal gear assembly so there is a problem with the internals. I am beginning to think that either there is a faulty batch or they are very, very fragile (being a shimano product this seems very unlikely).

I have tried to be very gentle with the gear change i.e. not turning the pedals when changing gear, but there was a problem with the outer cable jumping out of its housing but it shouldn't have caused any problems. So much for less maintenance with a hub gear system.

Any luck with this Harry. I'm interested to know if its working well now as ive got 2 agattus on oder!!

Regards
Paul

 

[HarryB]

Both robert44 and myself are waiting for replacement wheels/hubs. No idea why 6 and 7 gears are failing but there are plenty of users out there who are having no trouble at all. Fingers crossed that will be the end of the problem for us.

 

[burncycle]

Both robert44 and myself are waiting for replacement wheels/hubs. No idea why 6 and 7 gears are failing but there are plenty of users out there who are having no trouble at all. Fingers crossed that will be the end of the problem for us.

The Agattu I test rode at 50cycles failed in 6th & 7th too Harry.

 

[stokepa31_mk2]

The Agattu I test rode at 50cycles failed in 6th & 7th too Harry.

Im going to have my work cut out getting my wife to pause before changing gear. Shes highly intelligent but does not seem to understand gears at all. we had a right old laugh recently cycling round draycote water with her twisting the grips the wrong way. Lets hope it was a falty batch and not a design floor although i'm sure shimano would not market a product with poor durability.

Regards
Paul

 

[flecc]

The Shimano Nexus Inter-7 has been made for years, so it isn't a design fault.

I suspect this poor batch that found it's way onto the earlier Agattus might have suffered from inadequate clearance on one of the sliding components, seizing the change action which is spring loaded. A resistance due to tight clearance could resist the spring action sufficiently to impede the change.
.

 

[stokepa31_mk2]

In case anyone wants one, I found the actual shimano spockets here for £3.59. I got an 18 and a 16 for under a tenner including first class postage.

Paul

 

[Cyclezee]

In case anyone wants one, I found the actual shimano spockets here for £3.59. I got an 18 and a 16 for under a tenner including first class postage.

Paul

Paul,
The sprockets you ordered would seem to be a bargain, but the one I replaced and the new one I fitted was 'dished' and only had 3 splines. I hope yours fit OK.

John

 

[stokepa31_mk2]

Thanks John. I think you could be right about the splines. just came across this picture of the 8 speed in an ebay item. strange but looks like i'll be buying a dished one too. oh well, it will give me a good excuse to get the pro connect at a future date

Paul

 

[essexman]

Hurray the wife loves the Agattu

My wife hasnt really cycled since she had Michael our 14month old. Last Sunday bar one, we had a family trip to a nice duckpond 6 miles each way mostly flat but with two annoying rises along the way. My wife had the Agattu and i had my Dawes.

She loooved it. She liked the ride as its similar to an old cruiser bike she used to have. She loved pulling away from me at starts and hills. She found the controls dead handy. She loved throwing the babies bag in the front basket and getting on and going. She loved the fact she could wear normal clothes as well.

Last Saturday i got dragged into a girly clothes shop so that she could buy a new summer dress for cycling

These pedelecs are awesome!

 

[stokepa31_mk2]

Thanks John. I think you could be right about the splines. just came across this picture of the 8 speed in an ebay item. strange but looks like i'll be buying a dished one too. oh well, it will give me a good excuse to get the pro connect at a future date

Paul

just to report the sprockets have arrived and are the dished three spline variety. The photo on the website must be of 8 speed hub sockets. proper bargain.

Paul

 

[HarryB]

I got my new Agattu wheel/hub today. The rim was damaged in the post but I have fitted it back to the bike anyway as I am fed up with the Agattu sitting unused in the garage. It looks like the rim will have to be changed at some point as it still has a chunk out of it.

I have a question about the motor and hub gear combination. When I am riding along and stop pedalling the motor carries on for a second or so - is this normal? As I want to pause between the changes I find I have to wait for the motor to stop then change gear. Of course I now realise it is pointless backpedalling as you are not turning the chain, just the chainring. Anyway it all seems rather ponderous after the Torq. Finally how fragile are these hubs - can it be ruined by one missed gear change? While I find the Agattu very comfortable I have a sneaking suspicion I have bought the wrong bike. I hope not.

 

[stokepa31_mk2]

I got my new Agattu wheel/hub today. The rim was damaged in the post but I have fitted it back to the bike anyway as I am fed up with the Agattu sitting unused in the garage. It looks like the rim will have to be changed at some point as it still has a chunk out of it.

I have a question about the motor and hub gear combination. When I am riding along and stop pedalling the motor carries on for a second or so - is this normal? As I want to pause between the changes I find I have to wait for the motor to stop then change gear. Of course I now realise it is pointless backpedalling as you are not turning the chain, just the chainring. Anyway it all seems rather ponderous after the Torq. Finally how fragile are these hubs - can it be ruined by one missed gear change? While I find the Agattu very comfortable I have a sneaking suspicion I have bought the wrong bike. I hope not.

Harry

Im of the opinion that if the manufacturer tells you its ok to change on the fly the let it rip without the pause (perhaps just ease the pedal pressure a tad but keep it moving still). Your warranty wont be affected and if it goes the way of the pear, 50c will give you a new one.

I just went out for a spin and found it changed on the fly quite nicely. the gear cable did jump out of the hosing on the bars so this must be a design flaw as i think all of us have had this happen. Im not sure if the continued power after you stop pedalling is normal but i'm sure I recall Flecc posting something about this when musicbooks made the same comment.

Regards
Paul

 

[robert44]

Harry

Im of the opinion that if the manufacturer tells you its ok to change on the fly the let it rip without the pause (perhaps just ease the pedal pressure a tad but keep it moving still). Your warranty wont be affected and if it goes the way of the pear, 50c will give you a new one.


Regards
Paul

I,d like to hear what 50 Cycles have to say re hub gear operation/wheel replacement.

 

[Cyclezee]

I have to say that apart from a punture and a broken rear mudguard, I haven't had any problems with my 2 Agattus, and certainly no gear changing or motor running on. The combined mileage of the bikes is now around 1500, but that won't increase until my hand is healed.

I do hope that I am not tempting fate with those remarks, I really hope that I haven't got a couple of broken prop stands next time I look in the garage.

John

 

[stokepa31_mk2]

Hi Harry

Of course you can try and fit the wheel, however if it is causing a problem, send it back to us and we will replace it.

Regarding gear changing, make sure you pause peddling when you change gear this will ensure a smoother and correct change. They do not like being changed whilst peddling hard, especially. The nexus hub will change at a standstill no problem when at traffic lights whereas the derrailieur will not, but it does engage gear when peddling.

I hope the wheel is OK.

Regards

Scott

Thanks for the advice Scott.

Its a great bike! Really happy with it.

Paul

 

[flecc]

I have a question about the motor and hub gear combination. When I am riding along and stop pedalling the motor carries on for a second or so - is this normal?

They sometimes do this when very new, but it normally eases as it runs in. The action of the complex pedelec drum system only has to be a little slow acting to produce this delay.

As long as you aren't assisting with pedalling the run on of motor only shouldn't harm the gear hub. A single rough change shouldn't wreck the hub anyway.

Hub gear technique is radically different from derailleur use and needs to be got used to. For example, it's best to aim for the correct gear for a hill climb before starting the climb, and with practice you'll get to know which gear that is in various circumstances. This is because trying to change while climbing will provoke an attempt to rush the change. That's the downside, but the upsides are being able to select gears when standing still instead of having to change down through the gears at every stop, and less mucking about with trying to keep chain and sprockets clean and adjusted all the time. Once settled down, it's normal to ride for 2 years or more without doing anything except an occasional touch of oil on the chain.
.