Kalkhoff Sahel Pro Disc.

Blew it

Esteemed Pedelecer
Jun 8, 2008
1,472
97
Swindon, Wiltshire
Blunsdon hill. 12% where Sahel stands, 24% at the steepest point. continuing over the horizon at 18%. ( All figures approximate )


It should also be noted, this not the bottom of the hill. Due to a bend in the path, this was the lowest point where a clear view of the hill could be photographed.

Since the bye-pass was constructed, this is now a dead-end ** providing access to a few houses. It was originally a dual carriageway, the South-bound of which is now a segregated cycle path, with the North-bound reverting to two-way traffic. I should explain, it's hills like this that give me a problem, not so much the steepness but the length. I have greatly reduced circulation in my left lower leg which means, even though I can power a bike up a short steep slope the same as anybody else, on longer hills such as this, the lactic acid builds up in my left calf muscle, ultimately finishing up with cramps that bring everything to a stand-still.

** Correction: Apparently, the new cycle/bridalway goes underneath the new bypass at the very bottom. I did wonder why so much money had been spent for the benefit of a few houses and horse riders. I'm thinking it may link into an on-road part of the NCN routes.

Flicking Sahel into high assist, I started the assault in 6th gear. I had to drop three more gears when reaching the steepest section. Downward shifts are very quick, requiring only a brief pause on the pedals. I finally crested the summit in 6th gear, seriously out of puff, but no complaints from my dodgy leg. Even at the steepest part, the road speed never fell below 9 mph. Had I been riding one of my hub-motored bikes, I would have been off-it and walking long before reaching the summit.

I fully realise that some of you younger riders would have pounded up this hill with very little effort, but that doesn't dampen the satisfaction of my own performance, now in my 68th year, it's hardly likely to get any better. After popping into the electric bike shop in the area to scrounge a cup of tea, I returned to the hill to get a photo from the top. Due to the bend in the path, I had to ride about 200 metres down the hill to get a decent photo.

Once again, the camera has 'flattened' the hill, but note the angle of the gutter-line of the cottage on the right


I am absolutely delighted with the Kalkhoff Sahel Pro Disc. With the Panasonic center-drive providing the assistance, it really is a match made in heaven. ( Germany even )



Many thanks to 50cycles of Loughborough for a quick and easy transaction. SAHEL

A question I'm often ask: "Which of your machines is your favourite?". You may be surprised to learn the answer remains unchanged, none of them!. All of the machines fulfil the same basic function, they convey this ageing body to places where my legs or car could not. The bikes are in fact high-speed two-wheeled invalid carriages. It makes no difference if I ride one of my entry-level bikes, a mid-range or high-end machine such as Sahel. They all do it reliably and dependably, but of course differently. All of the machines have their individual quirks and bad habits, it's just a case of remembering the riding technique for whichever machine I choose for a ride. Oh!, one last thing, Sahel has one very bad habit, it constantly entices me to go pootling around the countyside when I should be attending to domestic chores.

All the best
Bob
 
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eddieo

Banned
Jul 7, 2008
5,070
6
Great stuff Bob!:)

when I got back on the wisper after trying the swiss flyer I expected to be disappointed, not a bit of it, they are a great bike for the money, the Flyer is 4-5k + so that kinda put it in perspective.

Ideally I want a crank and hub drive bike for next year..Trying to convince the wife to give up her step though (she only uses it on holiday more or less anyway:()
 

Blew it

Esteemed Pedelecer
Jun 8, 2008
1,472
97
Swindon, Wiltshire
Cheers Ed,

If you change your coachbuilt for a high-top, have a good look at the Thule tow-bar bike carriers, a bit expensive but brilliantly engineered. I've had a bit of hands-on experience with them, they really are excellent carriers.
 

NRG

Esteemed Pedelecer
Oct 6, 2009
2,592
10
Good write up Bob, I enjoyed reading that. Like Eddieo I'm also looking at a crank drive for early next year, leaning towards an E-motion at the moment but I'll sure checkout Sahel.
 

eddieo

Banned
Jul 7, 2008
5,070
6
Cheers Ed,

If you change your coachbuilt for a high-top, have a good look at the Thule tow-bar bike carriers, a bit expensive but brilliantly engineered. I've had a bit of hands-on experience with them, they really are excellent carriers.
Downsizing to a panel van conversion from a coach built over cab, so no choice then bikes on back:( Although for days and weekends, the bed tilts up and there is a garage there for a few bikes, on holiday this space will be full of stuff.

While I like the Thule range I am kinda looking at the Altera racks? they look good as well and they slide before tilting giving half a chance of some access to back of van.....but will look at Thule as well (the cheaper ones dont have the payload)

Atera STRADA DL 2 to 3 bike carrier (UK lights) no. AR2602
 

Blew it

Esteemed Pedelecer
Jun 8, 2008
1,472
97
Swindon, Wiltshire
Good write up Bob, I enjoyed reading that. Like Eddieo I'm also looking at a crank drive for early next year, leaning towards an E-motion at the moment but I'll sure checkout Sahel.
Thanks NRG,

I'll let you into a secret.

After climbing Blunsdon hill, I popped into the E-bike shop for a cuppa. While they were brewing up, I went for quick spin on a £2.5K hub-motored bike, talk about chalk and cheese. After riding Sahel for four days the difference was immediately noticeable. Crude power delivery, harsh ride even though it had front suspension, nowhere near as nice to ride. ( Don't ask, wild horses will not drag the answer from me).

The machines from Kalkhoff have an undeniable quality about them, and in the Sahel there is clearly a bit of metallurgical magic at work in the frame, it's amazing how a machine without front suspension can ride so comfortably.

All the best
Bob
 

LafRo

Pedelecer
Sep 13, 2010
25
0
Great story and beautiful pictures.
The Sahel looks great and a Panasonic system is perfect.
Love to see the pictures of the area you live in.
My country is unfortunatly to crowded and flat.
Keep up posting your rides :)
 

fishzx7r

Pedelecer
Sep 8, 2010
46
0
81
Colchester, UK
Hi Bob From another Bob, albeit 1 year your junior,
I have enter the world of e bikes on a cheap entry level chinese import,If I get as much fun out of it as you seem to get out of your bikes,I will be well pleased,

I have read all your posts with great interest, you seem to have good varied terrain to ride on, and your photos look great, it made a great read,

I will be trying something similar myself in a couple of weeks, a ride around the local nature trails and country parks,
but first I have to get the ok from Doctor, After my heart attack in May,

anyway as said nice read mate

Ride safe
Rob
 

Blew it

Esteemed Pedelecer
Jun 8, 2008
1,472
97
Swindon, Wiltshire
I will be trying something similar myself in a couple of weeks, a ride around the local nature trails and country parks,
but first I have to get the ok from Doctor, After my heart attack in May,
Glad you enjoyed the thread Bob, looking forward to your contributions to the forum, hopefully with plenty of pics, after all, one picture says a thousand words.

When joining this forum, I quickly became aware that my postings were being viewed by a far wider audience than I first realised, which is why I use a hosting site for the photographs. It means that visitors to this site do not have to be registered to enjoy the photo's, there's nothing more annoying than being unable to see other peoples photos on forums where I am not registered.

Your decision to return to cycling after a worrying health problem is a well trodden path. There will be days when you simply don't feel up to it, as I sometimes do. Such days are spent pottering in the garden or, if it's raining, polishing the living daylights out of one of the bikes in a nice warm kitchen ( It's closer to the tea-pot ).

Have fun with your bike Bob
't'other Bob :D
 
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Blew it

Esteemed Pedelecer
Jun 8, 2008
1,472
97
Swindon, Wiltshire
Great story and beautiful pictures.
The Sahel looks great and a Panasonic system is perfect.
Love to see the pictures of the area you live in.
My country is unfortunatly to crowded and flat.
Keep up posting your rides :)
Thanks for the kind words, they are very much appreciated.

This year has gone so quickly my head is spinning. I am still planning to ride the Forest-of-Dean cycle route before the Winter sets in. Needless to say, if I manage to squeeze it in, I will post a report on the forum.

Best wishes to you Robert
Bob
 

Tim

Esteemed Pedelecer
Nov 1, 2006
770
78
London
I've just found out that the Sahel Pro Disc did well in the Extra Energy tests this year. They said:

KALKHOFF SAHEL PRO DISC – A “VERY GOOD” FROM EXTRAENERGY
ExtraEnergy › 29.07.2010
"An attractive newcomer to the pedelec market"

"The Sahel Pro Disc from Kalkhoff is one of the most attractive newcomers to the pedelec market. The powder-coated frame in a subtle malachite green is scratchproof and chip-resistant, a feature which illustrates perfectly the quality and elegance of this pedelec". So begins the test report by ExtraEnergy in the July 2010 edition. The testers also highlight the long range on touring routes and in urban traffic, gentle engine activation by power sensor and subtle cut-off at the threshold value.

A top grade – "very good" for the Sahel Pro Disc!

 

Blew it

Esteemed Pedelecer
Jun 8, 2008
1,472
97
Swindon, Wiltshire
Panasonic throttle:

The primary function of this option on Panasonic powered machines, is to provide manual control of the motor when walking the machine up a hill too steep to ride in the normal way. If the machine is loaded with shopping, or perhaps towing a trailer, the throttle will at least provide enough power to pull the machine and load up the hill.

The throttle kit, not cheap at £61, comes complete with adhesive cable fixings for securing the three core cable to the down-tube. Not wanting to spoil the clean appearance of Sahel, I decided this cable needed to be inside the down-tube as the other cables are. A third hole was made in the large grommet on the right-hand side of the head-stock, but, no matter how hard I tried, I could not persuade the pull-through to pass down the frame tube. Clean as the frame may look, inside there are several internal bracings at the top and bottom of the down-tube. Eventually, I gave up and dropped the motor assembly out of the way and threaded the cable in from the top.

Please be aware: After fifty years of maintaining complex production machinery, I felt competent in carrying out this work. In the absence of such skills, it might be better to attach the cable externally using the adhesive tidies provided. better still, in the case of a new machine, ask the supplier to fit the throttle prior to delivery



The handlebar unit, although quite bulky, can be placed in many different positions to suit personal needs. Designed to be used when walking alongside the machine, there is no need to place it close to the handgrip.



I chose a steep climb-out from an underpass to see how the throttle worked in practice.



The first thing noticed, it has a very 'soft' start. In 2nd gear, The machine moved forward, but promptly stopped and then moved forward again. clearly, the motor maximum speed limit was 'bouncing' the assistance back to the start of the soft ramp-up. Selecting 6th gear, everything was much smoother with no 'hunting'. For my own needs, I think 6th gear is probably the best for walking alongside. In higher gears, the machine moved forward rather too quickly for comfortable walking. The overall impression is one of persistance rather than speed, attempting to hold back the machine against the drive resulted in the front wheel lifting very slightly, quickly corrected by easing back on the throttle.

Recently in the forum, there was some interest in center-drive machines by a couple of members who have less than the full compliment of useable legs. With that in mind, I decided to carry out some more tests on the flat. To cut a long story short, using the throttle for mounted riding isn't really practical. The maximum speed I managed, in any gear, was 3.7 mph in still conditions. On a very slight up-slope, the machine refused to move at all. Having now experienced the Panasonic throttle first hand, I'm convinced a hub motored machine with independant throttle is the best option for monopeds.

For my own purposes, the throttle is perfect, although it may prove to be superfluous. One of my favourite rides is the twenty-four mile round trip to Barbury Castle. I've never yet managed the 1 in 4 approach to the fort with a hub motored bike, the last bit always walking the bike with a whiff of throttle to help. For all I know, Sahel may take me all the way to the top. Twenty-four miles is just about on the range limit of the 10ah battery, especially as the day-time temperatures are beginning to fall, so this ride may not be attempted until the BMZ 18ah battery is fitted
 

RoyReg

Just Joined
Nov 12, 2010
3
0
Bucks
Hi Bob
Thanks for a great review, I am now considering one as well since your review..
I was wondering how the Sahal Pro disc is going?
Is it still living up to your expectations........
How do you find the lights bright enough?
I have never had a EBike before and I am not sure about the Alfine gear hub, are they ok. The only thing I was told by 50 cycles was is that you can change gears whilst stationery.
Many Thanks
Roy
 

Blew it

Esteemed Pedelecer
Jun 8, 2008
1,472
97
Swindon, Wiltshire
Hi Roy,

Sahel continues to delight in every way. Considering 50 Cycles have just knocked another hundred quid off the price, it has to be an absolute bargain for such a highly specified machine.

The Alfine hub is settling in well. The cable needed adjusting frequently during the first couple of hundred miles but has not required any further adjustment since. On the subject of the gear cable, I have recently been involved with investigating Alfines sticking in top gear. The cause is not the hub but the cable. It is of course very long with a full length outer jacket, often following a tortuous route through the frame. On downward changes, if there is any stiffness in the cable, the return spring in the hub cannot pull the inner cable back. The two machines with this problem were both fitted with twistgrip shifters. This problem doesn't occur on Sahel because it's fitted with the Rapid-fire trigger shift. This was further confirmed when riding the Wisper 906 XC, also fitted with a trigger-shift controlling the Alfine. It appears the Rapid-Fire trigger shift gives much crisper gearchanges on the Alfine hub.

As you have been informed, any gear can be selected while the machine is stationary. There are always times when we have to stop a bit quickly, which could mean re-starting in far too high a gear on Derailleur geared machines. Not so with the Alfine, just flick it down a few gears and off you go. When riding on the flat, I leave Sahel in top gear, even when pulling away. It only takes half a dozen hearty lunges on the pedals to accelerate rapidly up to cruising speed.

The Shimano 575 hydraulic disc brakes are faultless, but of course my preference for disc brakes means there is more than a little bias at work in my judgement.

As a leisure rider, I never ride after dark, so I can't really say how good the lights are. they are left permanently on automatic so that others can see me in gloomy underpasses. Come to think of it, I haven't even driven my car after dark since retiring almost three years ago.

I would strongly recommend you try to visit 50cycles at Loughborough or Richmond Park for a test ride before purchasing. This would also give you an opportunity to try a hub motored bike as well. If you have never owned an electric bike before, I suspect Sahel will be your choice. Kalkhoff quality teamed up with the Panasonic drive makes for a thoroughly enjoyable care-free riding experience.

All the best
Bob
 

RoyReg

Just Joined
Nov 12, 2010
3
0
Bucks
Thanks Bob

Very helpful information, I have visited 50 cycles a few days ago and tested the sahal comfort, which they they say is the same but except disc brakes and seat post etc. That why I was very interested in your great review of the Pro.

Also talking to Tim today at 50 cycles has convinced me to take the plunge as they only have one left of medium size, and as you say a good price for a high spec machine.
Will update you more shortly when it arrives.

Many Thanks
Roy
 

z0mb13e

Esteemed Pedelecer
Jul 28, 2009
578
3
Dorset
I thought my next ebike was going to be another Whisper (I really like the look of the 906 Alfine and the customer care has been outstanding) but I am really impressed by the Pro Disc and your post has made me think twice.

The 24v battery is a bit of a sticking point for me, but I can see how the panasonic drive system would be more efficient than a hub motor. I don't really use the exceptional range that the 14ah 905 gives me, but I wanted to be sure that there was plenty of oomph left at the end of 2 years of daily use, so the lower power capacity worries me.

I look forward to hearing how the higher capacity battery compares.

The other thing thing I am holding out for is an integrated computer/controller.

I guess I will have to put my personal preferences and predudices aside (hub motor - massive battery) and try one!