[python] Re: Hub gears
- From: Uipko Berghuis <uipko.berghuis@xxxxxxxxx>
- To: python@xxxxxxxxxxxxx
- Date: Tue, 3 Aug 2010 17:12:50 +0200
Hi Mark,
Did you consider other hubs? For exampe the Shimano Alfine (8-speed)
or SRAM i-motion (9-speed) are way cheaper. Offcourse Rohloff is the
best without any doubt but do you need it on bike which you can't ride
;) Maybe even go for a second hand hub gear at first. You can change
the hub gear fairly easialy if the bike and your skills are more
developed. This may save you some money if the project fails for
whatever reason.
Just some thoughts, I also like to buy the best of the best and
experienced that this is not always the smartest thing to do ;)
Uipko Berghuis
On Tue, Aug 3, 2010 at 4:46 PM, Boyd, Mark <mark.boyd@xxxxxxxxxxx> wrote:
> Thanks, Dan. It sounds like I will have to cross that off my possible list
> of excuses for not being able to ride the bike, then. First on the list is
> that I haven't built it yet!
>
> Cheers
>
> Mark
> ________________________________
> From: python-bounce@xxxxxxxxxxxxx [mailto:python-bounce@xxxxxxxxxxxxx] On
> Behalf Of Dan Chambers
> Sent: 03 August 2010 15:37
> To: python@xxxxxxxxxxxxx
> Subject: [python] Re: Hub gears
>
> Dear Pythonauts,
>
>
>
> According to Rohloff, the total average weight of the equivalent redundant
> parts of a derailleur system (Front and rear derailleurs, two shifting
> cables and shifters, rear hub with cassette, extra chain length, small and
> middle chainrings and bolts) averages 1600g. The weight of a Rohloff
> Speedhub 500/14 CC OEM fitted with shifter, cables and guides is 1820g, so
> approximately 220g extra minimum. This is their lightest possible
> combination; expect to add 150-200g of other fittings depending on the
> setup.
>
>
>
> It does not have an internal hub brake option, there’s just no space left
> inside, but is available with disc brake fittings.
>
>
>
> I think that you shouldn’t notice a big difference as the extra weight will
> be lower and half the distance from the frame pivot as the weight of the
> chainrings etc.
>
> You might feel the lighter bank account though J.
>
>
>
> All the best,
>
>
>
> Dan Chambers
>
>
>
>
>
>
>
> From: python-bounce@xxxxxxxxxxxxx [mailto:python-bounce@xxxxxxxxxxxxx] On
> Behalf Of Boyd, Mark
> Sent: 03 August 2010 14:08
> To: Torben Scheel; python@xxxxxxxxxxxxx
> Subject: [python] Re: Hub gears
>
>
>
> No, it doesn't have a hub brake. I think the full Rohloff assembly is around
> 200 g heavier than an equivalent derailleur set up, which doesn't sound
> much, but obviously more weight would be concentrated in the hub.
>
>
>
> Cheers
>
>
>
> Mark
>
>
>
> ________________________________
>
> From: Torben Scheel [mailto:torben@xxxxxxxxxx]
> Sent: 03 August 2010 13:06
> To: Boyd, Mark
> Subject: RE: [python] Hub gears
>
> I think it's an excellent idea - the rohloff doesn't have hubbrake, does it?
>
> The weight of the hub can't be significantly higher than dual chain wheels,
> 8-9 speed casette, front and rear derailleurs, extra chain length and so
> forth. An adjustable framelink are great, but not so much because of the
> gearing system.
>
> cheers,
> Torben
>
>> //-------------- Original Message: --------------
>> Hi Everyone
>>
>> A friend of mine has a Rohloff speed hub that I am thinking of buying
>> for my python project. If I include an eccentric bottom bracket, it
>> shouldn't need any other chain tensioning device, and may even work with
>> a chain case. This should make for a very tidy drive train.
>>
>> Other than the silly price tag that this would come with, can anyone
>> think of a reason why this wouldn't work? In particular, although I am
>> prepared for the inevitable bruising that learning to ride will bring,
>> do you think that having such a heavy hub will increase wheel flop and
>> so make the learning process even harder? If so, would you advise, say,
>> adjusting the steering head angle and if so to what?
>>
>> Thanks in anticipation.
>>
>> Mark
>>
>>
>>
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