KTM Macina dual hs - the eagle has landed!!

[AlMel]

The SRAM DualDrive can be had in three versions, 24, 27 or 30 gears according to the cassette's number of sprockets, 8, 9 or 10, all combined with a three speed hub and all operated by a single neat control:

SRAM DualDrive illustrated

Wow! Looks neat. It looks like a great combination.

 

[Electrifying Cycles]

There is a dynamo and associated storage which is why the light stays on after use.

 

[Electrifying Cycles]

Ah thanks, that link on your website isn't very clear, not your fault I know. Now I just need them to make the Macina Bold with the disc brakes of the shopper.

Ah I wondered where the extra weight had come from, certainly an interesting bike.

It is a fair point. I will be adding selected models to our website in late March. There will be more updates/improvements over the next few months including adding a e-commerce function.

 

[103Alex1]

still trying to fathom out how such a heavy bike can move / cycle so well with power off?

It just goes to show ... I feel that even about the Trek I just turned from a little over 10kg without puncture proof tyres / heavy tubes, SPD pedals and eBike bits to 24kg laden down with motor, BIG heavy battery and a bunch of extra fittings.

I was expecting it to be awful to ride unpowered but it was still great in the dirt and ran the battery to cutoff last night ... at the same place I ran my Agattu battery out conditioning it ... outside Tesco in the wee small hours, in the rain, with heavy chain and full shopping panniers to cycle home with ... UPHILL Was staggered that it was perfectly do'able, bike handled decently and I managed it perfectly fine. Didn't even have to get up on the pedals - having enough range in the low gears (and the high on the flat) makes so much difference when the motor goes off. Well worth having a decent gear range imho. Your 24 is a real step up on many eBikes.

 

[wissy]

7.30 am i took the bike for another small spin - just 3 miles to next village. Was testing it against headwind and it is so easy to be tempted to use turbo or sport mode when there is no need but against headwind was really handy. Felt as if i had exercised and took less time by far. Did take more notice of the dial showing the usage of each mode and realised i could adjust gears to maximise this and to make my gear changes and pedalling revs more efficient. still need to work on that.

 

[RobF]

There is a dynamo and associated storage which is why the light stays on after use.

The lights have a capacitor so they will stay on when you stop in traffic.

Sometimes it's only the rear one which is wired to do that.

 

[hech]

Yup, I remember I was seven years old when I first realised how gears work. My wee sister had been given a three speed sturmley archer and amazed us by being able to keep up. Didn't last long of course, we just cycled a bit faster and I dont think I got my first geared bike, a racer, until I was fifeteen. Sorry Wissy, jus sayin is all!

 

[flecc]

I’ve never heard of a derailleur system on a multi-speed hub. I must be terribly out of touch.

Although the SRAM DualDrive has been around for years, it doesn't mean you are out of touch since it's application is so specialised. It was designed for two reasons, first to suit setups where a triple front chainring are undesirable or impractical, second to give a much wider gear range for recumbents which are notoriously poor climbers but extremely fast on the flat, so needing the extra-wide ranging gears.

Neither application applies to normal road bikes which can use triple front chainrings with rear cassettes, but of course the crank drive units on e-bikes have become another application for the DualDrive since they mostly can't have triple chainrings.

 

[wissy]

Ok.. No laughing at my mad cycling technique from the graphs or else....! I took the bike to test out two very steep hills (in my opinion!) where I always had to push my 'normal' bike and it took ages. This was first time I could actually see how sport and turbo worked and how it affected the battery. Had to stop a few times to wait for him sometimes indoors.... His chain was acting up and I beat him uphill.. basically he would go up and down these hills three times by time I pushed my bike up but this time yaa boo!

Woweee..... It was great!! I was very naughty and used turbo more than I should have just to be 'refreshed' for the chips!

On way to Beaumaris... Was terrified I would have to push the bike up this steep but short hill.. It has always annoyed me this hill and stopped me going on this noce route as much as I should have. Stpped a few times as well.. and switched the electric assistance off several times which I think explains a lot of the tiny peaks.. As well as practiced changing gears in combination with assistance levels.. Mad fun!!

The chips have now gone

This is on the way back..... Different route for about half of the ride. This hill at start is basically upright it really is!!!

Only one quirk, query.. The walking assistance thing.... I was getting some sort of juddering when trying to test this uphill... Am I right that this feature doesn't go 6mph uphill then? Would this explain juddering / resistance? When I lfted the rear wheel whilst pressing it moved fine?

Ps... A easy and lovely 17 km in total.. Had to come back to watch Wales make England cry!

 

[dmcgoldrick]

nice photos and ride data....
regards

 

[flecc]

The walking assistance thing.... I was getting some sort of juddering when trying to test this uphill... Am I right that this feature doesn't go 6mph uphill then? Would this explain juddering / resistance? When I lfted the rear wheel whilst pressing it moved fine?

Don't have a definite answer, but it's limited to 6 Kph, not 6 mph. It may be hitting a limiter at that speed, which is 3.6 mph, making an on/off judder. Also the similar system on the Panasonic unit is lower powered than in it's normal mode, making it less capable on steep hills, so yours might be similar.

 

[Old_Dave]

The walking assistance thing.... I was getting some sort of juddering when trying to test this uphill... Am I right that this feature doesn't go 6mph

Lol... holding onto the bike and walking at 6 mph is kinda fun

 

[flecc]

Lol... holding onto the bike and walking at 6 mph is kinda fun

This option when added to the S class Panasonic bikes runs to a 12 mph limit, more a sprint-alongside while hanging on!

 

[RobF]

The walk assistance - like the regular assistance - transmits power through the crank and gears.

So I can imagine trying to walk in too high a gear up a hill might give a juddering sensation.

Wissy could try walking in different gears.

 

[wissy]

I did try the bike in several different gears etc but it even stuttered before the hill now that I recall. Did not have time to try the walkies bit today as I was cycling and forgot to test it.

Just wondering if there are any weird sensors / technique I many not be doing right?

 

[103Alex1]

This option when added to the S class Panasonic bikes runs to a 12 mph limit, more a sprint-alongside while hanging on!

I bet you don't get that speed walking it up a slope. I hardly ever use my walk-assist but try getting it to power the bike up a steep hill and there's no chance of reaching more than a crawl without pushing it - if anything ! Never judders tho'.

 

[flecc]

I bet you don't get that speed walking it up a slope. I hardly ever use my walk-assist but try getting it to power the bike up a steep hill and there's no chance of reaching more than a crawl without pushing it - if anything ! Never judders tho'.

I agree, it's far too low powered in that mode even for the 3.6 mph on steep hills.

 

[Electrifying Cycles]

Hi Wissy
If you are having problems with walk assist give us a call 25 March onwards. It is designed purely as walking assistance. Should be some info in the instructions. All the best David

 

[wissy]

Just adding on here that I was in school today at 7.05 AM.... Blydi pedelecs... Make me cycle too well!!! School didn't open doors until 7.30 am so stood about talking to sheep and white mountains. Forgot to take photos yet again as this was first proper school day cycle to work syndrome thing. 45 minutes there and 35 back even with a bit of headwind. FUN! Although nowhere for staff to park bike so that is a bit of an issue for the long term. Need to work on getting bicycle rack of sort for staff (ie me!!) at work. seems a bit silly all this C2W for us 'plebs' but not giving anything ref infrastructure fr employers??

Still... Making it a Monday and Friday target for work for now until I get more i to the flow and allow fitness to take over a bit from turbo mode (I cannot help it.. Turbo is just there begging me to use it!)

 

[JimB]

I hope you don't mind me asking Wissy......how many of all of those gears do you find you use?

I'm torn between thinking that it must be useful to have all of them to fall back on (and it's a quality gear set) and looking for the simpler life that a straight 8 (for example) would bring.

JimB