Ohh you should have videoed your tinkering, I would of loved to see how it was and how far they've come, however sounds like you had fun and there's absolutely no better feeling than fixing something you thought was dead - Well done good sir I tip my hat to you:cool:

The Swizzbee brushed motor is a bit dated but the electronics were technical for ebikes in it's day, in general the bike in all aspects is over engineered. The mid mount motor behind the seat tube is a nice idea as there is no heavy unsprung hub weight to pedal. The brushed Heinzmann motor is probably a one off or an obsolete design and any major failure like bearings will all but make the motor unrepairable, there is a guy in Germany who is buying up/collecting obsolete/traded in Swizzbee component parts from Swiss bike retailers.

It appears he has a few spare parts likes motors, controllers, PAS & rear dif's but appears not for sale as they are for keeping his collection of them in use for years to come.

Above in #41 I mentioned a power delivery fault, following some tinker time I rode a 30 mile route today ( delivered some honey) and all is well again.

The bike isn't TS but has 4 wire PAS set up fitted to the left crank side, I disconnected the connector to check for any wire issues however all seemed ok.

The other bit of tinkering I did was to remove the motor cover plate and remove all the brushes, wiped the armature and blew out the carbon dust. Having cleaned all inside refitted brushes ensuring good spring action and screwed the brush caps back on, I have a number/code which was printed on the brushes but so far not able to identify any replacement's if needed later at only approx. 6mm x 3mm x 18mm long.

Today the drive was faultless and was able to cruise along nicely again, a very brisk head wind made going a bit hard but was still able to progress along at 18- 20mph though used a bit more battery and with a taill wind 26.5mph without going mad My cell level ended up at 3.6v so still a few more miles available in the tank for this power hungry bike so roll on the nicer warmer and calmer days and I see some much nicer seaside visits to come.

 

Somehow I had missed the posts where you had issues

 

I am very pleased you got the bike sort out even if a mystery why !

 

And yes , it's a fair weather headturner of a bike. Have fun !

Talking of fair weather a short 12/13 miler this morning to see the wife who is caring for her ailing gran & and the Sb50c was in top form and performing well.

A respectable 18/19 mph along the slightly bumpy Worth Way which at the mo is nice dry and hard from the colder dry conditions, the route home along main A & B roads saw very good speeds of 27- 30.5mph on the flatter sections.

 

With the lack of spares (with regards to the leccy components and rear hub) and to keep the bike looking in good nick, I am only choosing dry nice weather conditions for use. Ideally what I really need is a defunct or a 2nd old unused bike for spares to keep this one working for many years.

I'm always on eye out for one too

 

Hens teeth

Time for another rear hub dismantle after today's 68 mile ride out, the differential hub has a set of three pawls which engage /disengage depending on whether power is being used or not. During a spell of unpowered riding I climbed a short steepish ramp then afterwards the pawls or a pawl started to slip which meant I could only use powered drive.

This has happened before and found a pawl facing the wrong way so not engaging, it only requires one to fail to cause the drive slip when unpowered.

 

Winter sown OSR in full flower aside the A23 at Bolney.

 

The old West pier at Brighton.

 

Blackthorn in full flower along the Downs Link over quite a distance, one thing I noticed was the lack of insects making use of the plentiful forage available.

Edited April 18, 20188 yr by Nealh

Ahh , warms the cockles this does....apart from the mechanical issues (which is beyond me tbh)

 

gutted to be stuck in office all day!

The old girl needs a bit of TLC every so often to keep her working, maybe the distances don't help. As you know K Swizzbee is a pleasure to ride it has very good acceleration & speed, unpowered an easy ride. My cycle fitness must be better then I thought as at times I can ride along unpowered and spin out at 19mph so much so that I am considering getting a normal bike again ( been looking at BMC alfine 8 with gates drive about 11kg).

The ride down to the coast and along on to Shoreham /airport and home via the DL is a favourite ride esp in conditions like today.

Edited April 19, 20188 yr by Nealh

Stripped the differential hub down today for a good degrease and clean.

I'm trying to find a race for the old girl does anyone know it's proper name so I can try and find a replacement ?

 

 

Some of the balls are loose and fall out as the ring is a bit distorted.

 

Also looking for some pawls, I have a feeling that they may be DT Swiss.

CRC have a very similar item but can't be sure they are the same size.

8mm

 

X 6.5mm

 

 

Edited April 24, 20187 yr by Nealh

Pic 1 & 2 found it, simples !!! A ball race cage.

Pic 1 & 2 found it, simples !!! A ball race cage.

 

I is educated !

Swizzbee is off the road for now age is catching up with her a bit now , but hope to get her going again.

The left hand side internal hub mechanism has four pawls that catch when the belt drives the bike (and three for the cassette rh side), unfortunately the pawl spring lhs which is thin elasticated spring (much like the Hammerschmidt pawl spring) has been chewed up by the internal drive cogs probably having snapped first.

Firstly I need to try and find a replacement of similar type and then give the whole transmission a through clean in an oil bath to get rid of any small metal spring particles prior to drying and fresh lubing.

The stretch diameter I need is 32mm to go over the pawl body and then sits in the body central groove (approx 28mm) as well as in the pawls central groove.

Having trawled the web it appears this type of retaining spring isn't very common as most freehub pawls use individual pawl springs, a solid wire type spring or snap ring affair.

Edited May 25, 20187 yr by Nealh

The stretch diameter I need is 32mm to go over the pawl body and then sits in the body central groove as well as in the pawl s groove.

 

Is it like this Neale?

http://www.flecc.uk/p/images/freewstrip2.jpg http://www.flecc.uk/p/images/freewstrip3.jpg http://www.flecc.uk/p/images/freewstrip5.jpg

 

That's the one in both the first and second generation Panasonic crank units, and the Kalkhoff Impulse units are virtually the same. There's plenty of electrically failed Panasonic units around which will have good pawl parts, though the Kalkhoff ones often broke theirs.

 

I can't say the exact diameter of the spring.

.

Thanks Flecc, fairly similar.

That retaining clip like many is a one piece solid metal spring clip/ C type clip.

 

 

After spending a few hours trawling the interweb, it appears I need a garter spring as used on oil seals these are a S/Steel fine elastic seal spring. Very similar as found on suspension forks on the fork stantion seal.

I have found the seal spring on its on at Simply bearing so have ordered one @£1.78 to see if it will do the job, they have a 25mm & 30mm one so hopefully one or the other will have enough stretch to do the job.

A lot of the gear components are Sram so the internal gear parts are probably also Sram with some re-engineering also havng been done, for pawls if I need any will have to look at Sram or poss DTSwiss. One item I haven't been able to source is the caged bearing in the size I need, plenty for head sets but too small in diameter.

I will post some pics in the future when I dismantle again for cleaning and fitting.

Edited May 25, 20187 yr by Nealh

Back to A1 working and ticktyboo .

 

After spending a day or two trawling the interweb I went for the easy option in the end of just trying rear hub drive searches and was smacked in the face straight away with the answer.

The original design used an already made drive unit the SRAM DUAL DRIVE 11/ 3 X 9 system, which are no longer produced and as of this year Sram no longer make any hub drive /gear units now having ceased all production.

The issue I was experiencing was bearing retainers being worn, internal springs past their sell by date as well as the odd pawl issue. These incidental small parts appear to be hard to find and mostly unavailable.

 

After looking each evening for the best part of a week on ebay, I found a new unused 3 x 9 dual drive for sale in the UK from a cycle shop delivered to my door for a ton.

Rather then strip, relace and true the rim I decided to just replace all the internals and keep the old hub shell as is.

And blow the crows two more new units have appeared on ebay from German bike shops.

 

Old internals I removed for cleaning after pawl spring snapped and ceased hub drive up.

The thrust washer far right is cracked and has a hair line on it across the radius also the e-clip is quite weak.

 

Main pawl carrier.

 

Hub internal thru pic, small bearing retainer on Lhs was past it's sell by date.

Edited June 7, 20187 yr by Nealh

Whilst trawling the interweb I cams across this schematic view of the internal parts from an Aussie web site to confirm that the Dual Drive 11/ 3 x 9 system was exactly what the Swizzbee has, a great find just what the web was designed for an online library.

 

 

New and old drive unit internals side by side, the newer items above are a bit lighter here and there.

 

I'm tempted to buy another new Dual Drive as future spares to squirrel away.

Swizzbee never seems to be maintenance free having got the hub sorted and running sweetly and no more issues with drive side axle nut keep loosening and at times getting lost as it flies off.

 

I now have the brushes playing up again, one of the contact wires appears to be a bit faulty causing an intermittent contact, I thought at first it was a mechanical noise then after a bit of investigation nailed it down to a very intermittent electrical contact from the mid mount Heinzman brushed motor.

The brushed motor isn't a traditional axled hub motor but a 130mm dia x 75mm wide in-rider type motor with a brush armature on drive side and a stub axle on the non drive side for the gates belt drive.

 

Hopefully having trawled AliEx I have found and ordered some 18mm x 6.3mm x 3.1mm brushes which near as a damn match the 6 x 3mm I need, at most I may need to file them a smidge.

Three and a bit weeks on and the brushes arrived from the Aliexpress seller, 15 -20 mins of work this morning and all is well again and the bee is working again.

 

At first I got no response from the electronics, the 4 step ignition sequence appeared not to be working. When the on button is switched there is a high pitch audible tone and then three single mid pitch tones as you enter the 3 digit start sequence, once the correct sequences is in three quick audible tones are emitted to indicate the bike is good to go. This take about 2 seconds to do.

So thinking about it, I remembered that during the last few weeks I had rerouted the parallel wiring for the rack pack and this led to a false wire contact to the controller. A little fiddle and contact properly restored.

Swizzbee never seems to be maintenance free having got the hub sorted and running sweetly and no more issues with drive side axle nut keep loosening and at times getting lost as it flies off.

 

So as complete a hobby as cycling could ever be!

.

Hi Nealth, you commented on an Oxygen Emate city that was you sale for £100 that I told the owner I would happily get on my return from holiday to use as spars for my 2011 Emate City.

 

I thought you might be interested to know that I did make the effort and picked the bike up, sportingly reminding the owner to remove some lights and a bottle cage that he had left on.

 

My intention was simple to strip bits off it as required. I left it in the garage a day or two and then got it out to remove a front brake lever to swap over to mine as the brake cut out sensor on mine had been broken while it was locked at a station.

 

Anyway after I had removed the lever and replaced the throttle and grip I started to look more properly at the bike and began to realize that it was in much better nick than mine and hardly used at all.

 

There were a few wires that had been disconnected and a missing front light although I found the missing front light with the charger, and the reason he was selling it was that it had a broken spoke in the rear wheel and wanted to free up space in his garage. Anyway I connected up the wires, swapped over the battery from mine and not expecting much turned her on.

 

I lifted the rear wheel off the deck and gave it a touch of throttle to be rewarded with a gentle wine from the motor and a swiftly spinning rear wheel.

 

At that I swapped over my seat post and saddle as the bike had come with the original suspension seat post but no saddle and took her for a spin. Blimey she whooshed away powerfully and quietly thrusting me quickly up to an indicated 20mph (must also be de-restricted) up a gentle gradient, and then a bit more coming back with both throttle and pedelec sensors working a treat.

 

I noticed that she was showing 500 miles on the display and came with hardly used schwalbe marathon puncture proof tyres. I thought goodness me this is an almost unused bike with a broken spoke.

 

I have a few spar spokes for my bike but when I removed the broken spoke found that mine are too long due to having an earlier less modern motor fitted. Any way while she was upside down I checked and tightened all the spokes in the rear wheel and noted that the wheel was really not that badly out of shape. Actually probably a bit better than the rear wheel on mine.

 

I then rang Oxygen and explained the position I found myself in and they have said they will post me five replacement spokes free of charge. I think at the very least I will very soon now have two good working order Emate city electric bikes.

 

I thought you would be amused to hear my tale.

A worth while punt for a measly ton.

 

Suppose you didn't see an unused swizzbee sitting next to it.

 

Fortunately at the mo, I have been able to sort out rear hub (sram leisure) and other issues like engineering and brushes.

If ever the Heinzman or controller go then it will be a strip out job of all components and a retro fit of another drive unit, most likely candidate one day if it comes to it will be a GSM without controller @48v and all the gubbins can be fitted in the triangle case as is now.

Which reminds me must get a GSM from Hatti and keep one in the garage as one day they may not be available or maybe something equally better might come along.

Edited August 18, 20187 yr by Nealh

Sounds like you are having a lot of fun!

Another ride and another issue today , disintegrating cassette pawls .

Only one complete one remaining of four. The fine spring retaining ring/band broke.

 

All repaired and back working again, after 45mins of tinkering. I robbed the pawls and retaining band off the old leisure drive .

Just came across this thread while googling "Swizzbee". I have a Swizzbee that I'd like to find a good home for. I bought it new in 2007 and it only covered a few 100 miles before I stopped using it around 2009, since then it's been taking up space in my garage.

 

The battery won't accept any charge now, the 2 yellow LEDs flash which according to the instructions means that they are too hot or need to be discharged. I suspect that they've gone short circuit. I charged them up a couple of years ago and seem to remember that the front and rear lights didn't work.

 

Other that that the bike is in excellent condition.

 

Would anybody be interested in making me an offer for it, I live in east Wiltshire.

Just came across this thread while googling "Swizzbee". I have a Swizzbee that I'd like to find a good home for. I bought it new in 2007 and it only covered a few 100 miles before I stopped using it around 2009, since then it's been taking up space in my garage.

 

The battery won't accept any charge now, the 2 yellow LEDs flash which according to the instructions means that they are too hot or need to be discharged. I suspect that they've gone short circuit. I charged them up a couple of years ago and seem to remember that the front and rear lights didn't work.

 

Other that that the bike is in excellent condition.

 

Would anybody be interested in making me an offer for it, I live in east Wiltshire.

 

Really ? Cripes, do you still have the codes to access ? And an asking price ? My circumstances have changed and I love to re-own a swizbee and go riding with nealh !

 

 

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