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Shimano Alfine 8 Speed

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  • Felix D'Kat
    replied
    Thanks for the advice on the discs and tool

    There were 4 different options for locking down the centrelock ring, I found the FR 5.2 but didn't know if that was the right one

    Thanks

    ..

    Leave a comment:


  • calfee20
    commented on 's reply
    Sorry I didn't answer your whole question. You are asking questions that are making me think. This is good!
    When I got the rotor I went into my tool drawer that had all of my splined tools to see if one would fit. One did and I didn't think much more about it. It seems it is the same tool that rear cassettes use.

    Designed for the removal and installation of most cassette and disc brake lockrings with a 12-spline tool fitting, including Shimano®, SRAM®, and others.

  • calfee20
    replied
    Originally posted by Felix D'Kat View Post
    calfee20

    what discs are you running on your alfine 8spd

    I was just about to order the 8 speed and other bits and remembered the disc, there's again way to many to choose from

    one thing I can't figure out is how is the disc secured to the hub, I can't see any lock rings or anything ??

    ..
    SM-RT70S (160mm) SLX Centerlock Rotor is what I purchased for no other reason than to try something new. $28.00 at universal cycles.

    http://www.universalcycles.com/shopp...s.php?id=84023


    Shimano Centerlock Disc Brake Rotors - SM-RT70S (160mm) SLX Centerlock Rotor

    I could have bought something for $10.00 but I read a little bit of the Ice Tech propaganda and figured $18.00 wouldn't kill me.

    This is only my second bike with disc brakes. There has been a lot of squealing and screeching going on with both bikes. I rode and let other people ride my Paratrooper last year with the factory rear wheel and did not try that rotor until the Alfine was installed which was the last few weeks. I only have about 30 miles on but it instantly felt different. There has been no noise and it just feels solid. There is no sponginess at the hand brake now. Why???? Did I suddenly do a better job at setup and adjustment? I don't know.

    It was enough of a surprise to get me to instantly order a new rotor for the front.

    Hmmm all of this shooting my mouth off has made me realize the new front rotor is NOT Ice Tech. Foolish me. Needless to say these rotor differences has caught my attention and I will experiment a little. Is it having a separate center section that is cutting down on the vibrations produced during braking or is it the metal sandwich in the Ice Tech that is making the difference?

    Here is a sentence on Ice Tech.

    "
    Ice Tech brake rotors (RT-98; RT-81; RT-67) feature an aluminum core clad with stainless steel braking surfaces. The innovative design sheds weight, dissipate heat and dramatically improves overall performance".

    I will continue this when I get back from Florida and have put some miles on my bike.

    Leave a comment:


  • tommie
    replied
    Originally posted by Felix D'Kat View Post
    calfee20

    one thing I can't figure out is how is the disc secured to the hub, I can't see any lock rings or anything ??.
    goes onto splines and then the lock ring.

    i have the standard 160mm discs, but should take anything up to 203mm.



    Leave a comment:


  • Felix D'Kat
    replied
    calfee20

    what discs are you running on your alfine 8spd

    I was just about to order the 8 speed and other bits and remembered the disc, there's again way to many to choose from

    one thing I can't figure out is how is the disc secured to the hub, I can't see any lock rings or anything ??

    ..

    Leave a comment:


  • tommie
    replied
    Originally posted by calfee20 View Post
    Well I got 5 miles or so on my Alfine 8. It is real smooth and Quiet. The trigger shifter is a joy to use. My flatland style riding will probably only see me using about 5 of the 8 speeds. Third through seventh seems to be what I will use. First and second are to low for flat starts on tar and 8th will be for flat out on slight down grades or maybe when I have a tailwind.

    Ah Yes you can't beat being able to shift when you are stopped. It's just perfect.
    I have the Alfine 8 on my BBS 02 750w MTB.
    What cog are you using on it? I started out with a 20t, then a 18T and now down to a 16T for a little more top end, the motor has enough torque to handle any hills round here.

    I find myself double shifting to save time going down through the gears, in fact 4 or 5 gears would be enough!

    Bought the complete 26" wheel with Hub from Germany, cost was £220 GBP.

    Click image for larger version

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    Leave a comment:


  • calfee20
    replied
    Well I got 5 miles or so on my Alfine 8. It is real smooth and Quiet. The trigger shifter is a joy to use. My flatland style riding will probably only see me using about 5 of the 8 speeds. Third through seventh seems to be what I will use. First and second are to low for flat starts on tar and 8th will be for flat out on slight down grades or maybe when I have a tailwind.

    Ah Yes you can't beat being able to shift when you are stopped. It's just perfect.

    Leave a comment:


  • ncmired
    replied
    Just to add to the confusion, there's also a red band Nexus 8 that's supposed to have the Alfine 5-series needle-bearing pinions ... really Shimano?

    I went for the 5-series Alfine for several reasons. The first is that the cable pull is gears 1->8, so if the cable or shifter fails, you end up in 1st gear. It's also directly compatible with the Nexus 8 I already had, so I can swap wheels without much fuss. I also find removing the shift cable is easy as the cable wraps the bottom of the hub cable guide (this is more likely something one just get used to).

    As far a strength, I'm speculating that the Alfine 7-series as loosely based off of the Alfine 11 speed (look at the hub externals and again the cable routing), and may be benefit from some of the 11 speed design aspects, although it does not have the sealing or oil bath the 11 speed does.

    I haven't yet, but am planning on going to ATF lubrication on my current hubs (8 speeds - Alfine 5-series and Nexus).

    What would I really like? A Rohloff-level quality 7-8 speed oil bath hub with a nice-n-wide chain line that matches up to the BBSHD well so belt drive is again a possibility (although I wouldn't myself), and with a real strong 1:1 gear, for $300-500 or so.
    Last edited by ncmired; 01-10-2018, 12:43 PM.

    Leave a comment:


  • calfee20
    replied
    From what I can gather the 7001 is a little stronger and will shift under load better. Here is an advertising spiff from a bike parts supplier.

    Premium quality, style, adaptability and easy handling are the features of the Alfine gear hub.
    Maximum efficiency of the Shimano hub gear combined with a double roller clutch allows for fast and soft shifting with a gear ratio of 307%. A Top Normal shifting system facilitates a gear change to higher gears and thus allows for a sportier ride.
    · optimised shifting under load or uphill
    · 8-speed Rapidfire Plus shift lever (SL-S7000-8)
    · sprocket: 20 teeth
    · hub width: 135 mm
    · chainline: 41,8 /46,8 mm
    · Center Lock brake disc mount
    · weight: approx. 1.680 g
    · lock washers for vertical dropouts (blue/green)
    · incl. mounting kit, installation instructions, cable and casing
    · available in 32 or 36 hole

    Leave a comment:


  • Felix D'Kat
    replied
    Thanks mate, I don't consider useful advise or criticism to be a wet blanket, in fact just the opposite

    I'll look around and see what other users have come up against

    Looks like it may be the alfine after all

    It's very confusing though as there seems to be several different versions around

    SGS 7001
    SGS 501
    SGS 7000
    then there is the di version

    Just going to have to slog through them I guess and see

    I can see why some just stick to Derailleurs

    anyway I have time till I wear out the one on the bike ATM

    cheers





    Leave a comment:


  • calfee20
    replied
    I don't want to be a wet blanket but I have been down this rabbit hole. A lot of the same issues exist with the 5spd.

    The trigger shifter is shown on the S-A site but it was finally announced that it would not be available until this winter "northern hemisphere". Sprockets hard to get in the USA. I have a 5spd that slipped in 4th and 5th. I tried contacting S-A many times and when they finally got back to me it was to say "We have never had a problem with that hub", and they didn't even offer any options to fix it even at my expense.

    Another member, lance tesla has one that he was using on single track. His chain derailed and tore apart his shifting mechanism. On the good side I think we have three other members who at using the 5 spd hub with success.

    Just do your research better than me. I found out about the sprocket and shifter problems after I had the hub.

    Leave a comment:


  • Felix D'Kat
    replied
    Thanks Calfee

    I see what you mean, the ratio's come out huge with the std chain ring, I may go for the S/A 5 speed then, similar ratios as the Alfine but only 5 gears, anyway seems the S/A 8spd won't work

    See what happens, I'll kep an eye on our build though in the meantime.

    ..

    Leave a comment:


  • calfee20
    replied
    Originally posted by Felix D'Kat View Post
    I've been doing some research on IGH's and will be going with the Sturmy Archer X-RK8, 8Speed, I have to import it from the UK, no one sells them in Australia.

    I'm choosing the S/A because they are cheaper than the Alfine and you don't need any special tools to repair them, the Alfine needs 8 separate special tools to dismantle them, the S/A needs wrench and circlip pliers and all the spare parts are readily available, you need the wrench to replace the sprockets anyway, so not a problem anyway.
    Are you sure about the special tools?


    This is a HTR145, $33.00 on amazon but it is the wrong one you would need a HTR143. I couldn't find one of those anywhere.

    Before you buy go to Sheldon Brown's online calculator and figure out your gearing. http://www.sheldonbrown.com/gear-calc.html This hub is slightly different than other hubs. It doesn't have a central direct gear and then go up and down from there. It starts at low and just increases from there.

    I ran the calculations through my bike and I would need a very small front sprocket or a large rear sprocket. It would be ok for the street but for single track it may be geared to high. Then see if you can get spares. There isn't much in the USA but you might be better off down under because most parts are available in Great Britain.

    Leave a comment:


  • Felix D'Kat
    replied
    I've been doing some research on IGH's and will be going with the Sturmy Archer X-RK8, 8Speed, I have to import it from the UK, no one sells them in Australia.

    I'm choosing the S/A because they are cheaper than the Alfine and you don't need any special tools to repair them, the Alfine needs 8 separate special tools to dismantle them, the S/A needs wrench and circlip pliers and all the spare parts are readily available, you need the wrench to replace the sprockets anyway, so not a problem anyway.


    ..








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  • Semper-guzzi
    replied
    I'm definitely interested in transitioning to an IGH. I don't know what one would be best for single track tho. Not like jumps or anything crazy, but the usual roots and rocks. I'll be following along with you guys and your builds.

    Leave a comment:

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