Bottom Bracket Gears?

[Mike_Ayling]

The Pinion has two further advantages over the Rohloff and indeed all other IGHs: first, its central position means better weight distribution than the "rear-heavy" IGH; and second, rear wheel removal is easier without having to disturb the shift cable(s).


If you have the Rohloff EX box you simply unscrew a thumb screw and remove the EX box from the hub. Takes no time at all.

Mike

[Manc33]

Sounds like you are either going to either have a big fat bottom bracket, or not many gears, if you had both then magic is occurring somewhere (or an internal geared BB that's going to wear out fast). If I was going this route I'd get a Rohloff Speedhub. We can dream.

[Cunobelin]

MY Gekko has a 20" rear wheel with Rohloff and spinning out was an issue

A Sclumpf HSD combined with the Rohloff gives a massive gear range that allows for speeding along the flats, and climbing steep hills

[[XAP]Bob]

Sounds like you are either going to either have a big fat bottom bracket, or not many gears, if you had both then magic is occurring somewhere (or an internal geared BB that's going to wear out fast). If I was going this route I'd get a Rohloff Speedhub. We can dream.

The pinion is a specialist 'big fat' bottom bracket.
The schlumpf isn't, but only has two gears (albeit very widely spaced in the HSD)

[Inigo]

I purchased a Kalkhoff P18 through 50cycles in Loughborough.
I replaced the handlebars & headstem ( I prefer sitting upright on a bike). Replaced the seat post with a suntour cam action seatpost, & my most comfortable Brooks B67 saddle .
Replaced the tyres with my schwalbe Marathon plus tour’s
My average speed is 11mph , & it’s the most enjoyable cycle riding I have ever had, & can’t wait to jump on the thing.

Hey there. Just stumbled across this post. I am looking at buying a Kalkhoff P18 at the moment, but I'm struggling to find accurate specs. In particular, I would like to know what the total weight of the bike is! I have seen quite varying numbers. For example, in the specs of this Youtube video it is given as 16.35kg which seems ridiculously heavy for a non-ebike and puts me off. Conversely, the archived page from the Kalkhoff site gives it as "130kg" (I assume they mean 13.0kg!) which seems much more reasonable.

Can you comment on which is closer to the truth? How do you find the weight of the bike?

I hope you see this, I would hugely appreciate your reply if you do. Many thanks.

[elduderino]

Hi
Sorry, just saw your post.
I don’t know the weight of the bike. I have no way of weighing it.
Whatever it was, I can tell you it’s a lot heavier now, since The first things I replaced were the seatpost with a Sutour CNX cam action post, the saddle with my eight yr old Brooks B67 , the pedals with a pair of pedaling innovations catalyst pedals , & an angle adjustable handle bar stem.
As you can see I am in to comfort, not speed( at 69, I am in no hurry to get anywhere . ). I just plod on at an average speed of 10mph, bolt upright, wishing I was in Amsterdam .
All I can tell you is the bike, with its Pinion gearbox, & gates carbon drive, performs brilliantly, I use the bike everyday for journeys that don’t require a car. plus an early (5am) Sunday morning 30 mile rides, to avoid cars.

[Manc33]

600% eh?
Is that all?

Try my Moulton TSR90 with 740%.
16" to 134"

You're beating mine (14" to 111.5")

I always see your posts with this and wonder how to get more top end.

I just don't know how, since I am on a 22 granny with 40t rear / 48t outer with 11t rear.

My rear mech already can't handle the capacity on a MTB (it can on a road bike due to a shorter chainstay length, but is at the limit). I don't need the 134" you've got, but 111" doesn't cut it for me, it needs 1 more higher gear. Going to a 53t outer would make the already stretched capacity even worse, although I think my FD would possibly cope with it as long as I also added 5 teeth to the middle chainring, which I'd also prefer to be bigger anyway (from the current 36t).

Even with a 53t outer that would still put me at 123" so I don't know how you're doing it Mick F but I am sure you've said in the past. It was so long back I can't remember.

My lowest gear being 14" is ludicrous, you need to be cunning to balance, or pedal faster. I can just about manage it and if I change anything to affect the balance like put a stem on 2cm shorter, it becomes pretty much impossible to use that lowest gear and I have to use the next sprocket down, however the low sprocket comes in handy on the middle chainring and avoids using the granny in a lot of circumstances where I might otherwise be dropping to it.

[simonineaston]

Pinion / Gates combo sits patiently in my fantasy To Do list, waiting for the day when I win the pools...