Starter motor Series 1 Jota

I have a Bosch starter that I would sell, it needs a rebuild, but to what extent I can't say, I do know though, that the problem is not the brushes, they are OK.
PM me for price and postage
CLEM
 
Guys thanks for your responses. Meantime I've been trying to source new ones. They are out there, but with prices up to 450 Euros plus shipping. I had looked at the Blue traction website where they had a compatible replacement however, they were out of stock. I then discovered a NEW Blue Traction website with the same product for just 165 Euros plus shipping. Seemed like a bargain so I ordered, only to receive the invoice saying they were on back order which is obviously frustrating. However, at the price, I'm willing to give them chance to resupply for a couple of weeks. If that fails, I may have to bite the bullet on something more expensive new or come back to you Clem.  Thanks Richard
 
Just out of interest for any others. I have managed to source this from Blue Traction and Western Parts. Blue traction tell me that this has permanent magnets rather than field coils. In every other regard they tell me that it is identical to the FIEM equivalent  At EU134 plus shipping it is the least expensive alternative I have found, though it seems they have few left in stock  https://newstore.bluetraction.eu/en/fiem/383-4675012.html
 
That's interesting. Never heard of Blue Traction before. Well done tracking it down. It would be interesting to hear how their starter motor performs.

My starter motor died because the stator windings failed. I bought a refurbished motor from Malcolm Cox which is now on the bike.
I still have the old starter motor (still in bits in a plastic container) waiting until I can either re-wind the stator or find another buggered motor that has intact stator windings. If anyone has a fucked starter motor (for reasons other than burned out stator), send me a PM.
 
Why not have a go at rewinding it? It may take a couple of goes to get it done ok, but it's not rocket science! You just need some of the correct gauge enamel copper wire.

cheers,

bazzee

I am wondering what could go wrong. Easy for me to make the suggestion when someone else has the task!
 
It's difficult to get the windings as tight as they do in the factory where they're wound by a machine. So you end up with fewer turns which reduces the performance of the motor. Also, it's a tedious bloody job. Still, I've got nothing to lose by trying so might give it a go one day.
 
I have had plenty of issues with the Motoblat [sp] EI and stator on old Huskys and with the Auto Electricians who reckon they can rebuild them, at least 3 well-known shops around Oz failed but by far the best results came from Betta Bikes in South Oz. He specialises in uping the lighting power of bikes used in the 24hr off-road rally in South Australia, really great service.
https://bettabikes.com/
 
Hmm,

we get motor rewinding apprentices at TAFE, I'll ask around and see if anyone can do it or offer advice. Might be a bit tricky as we are delivering classes online atm.

cheers

bazzee
 
The starter on my 3C packed up a few months ago.  That was after 45 years of service.
The field coils were shot and needed replacement.
Struggled to get anyone local to do it, most of them tend to do only bigger electric motors.
Eventually found a Bulgarian sparky who specialised in such things. 
Very much a hole in the wall sort of set up.  However, he did what seems, so far, to be a fantastic job.
Very neat and tidy, and the motor now spins like a demon.

Tom
 
tom3c75 said:
Struggled to get anyone local to do it, most of them tend to do only bigger electric motors.
Eventually found a Bulgarian sparky who specialised in such things. 
Very much a hole in the wall sort of set up.  However, he did what seems, so far, to be a fantastic job.
Very neat and tidy, and the motor now spins like a demon.

Tom
Click to expand...

Those local fixers are gold, Tom. Might look like a Dodgy Bros joint but they often have excellent experience and skill behind them.
 
I work for a large electrical contractor which has been in business since 1916. We had a motor rewind division which closed down early nineties. A lot of the equipment sat in the factory unused for a number of years before getting tossed out.  :(
 
There was an old-school electrician near me who used to re-wind stuff like starter motors. But he rarely does it now because it was difficult to make any money out of it. It's a labour-intensive and time consuming job. If he were to charge his normal hourly rate, it would work out more costly than buying a new part (armature, motor, whatever). It was only worth doing on ancient stuff that was out of production and unobtainable any other way. Still might be worth doing yourself if you have nothing better to do with your time.
 
Reckon you're all up a dead-end street, especially regarding a DIY job on the field windings.  Both Bosch and SJCE starters use a rectangle cross-section copper strip, about 4x1mm, for the field windings, not the usual fine-guage wire normally found in electric motors.  I can't imagine that to be readily available to anybody outside the vehicle electrician trade.

NOS Bosch windings, cores and housings complete with windings are still available, the windings alone come to around ?60-odd.  These are wrapped, pre-formed and connected as a set of four and slot straight in.  Loosening/tightening the cores is another thing, and should not be attempted if unexperienced.  The complete main bodies are also quite reasonable, really doesn't justify a DIY attempt and messing around for weeks on end.  Even though they are dimensionally identical, Bosch and SJCE fields and armatures cannot be mixed, this reverses rotation direction.  The only truely interchangeable part is the brush holder with brushes.

Seems quite a few vendors try to finance their new yacht or weekend home with a single sale of "unobtanium", simply relying on punters not doing their homework. ::)

piet
 

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You're right Piet. I just had a look at the box of bits that was once my Jota's starter motor. The bloody stator is wound from rectangular section wire. The stuff is available (Here) but I don't like my chances of finding a local supplier.

I'd happily pay ?60 to resurrect this starter motor, if I can find a new stator winding. My starter motor has "Bosch, Made in Spain" stamped on the case, plus a bunch of numbers. I've had a look on line, and tried searching for those numbers on a Bosch starter motor website, but nothing comes up.

Piet - Can you point me towards a parts supplier for these motors please?
 
Cam, there is a bloke up north who does exchange starters, send yours up and get one back. Was considering this when mine got temperamental and needed a wack with a spanner heading home from Tassie, fixed with new brushes for the at least 3rd time since I have owned it. Heard on the grapevine so confirm with Red. Red has a bloke who rebuilt mine during its 2nd last engine rebuild. Mine was replaced years ago by Eadies or so I thought. Reds bloke found mine a 1 off, half Bosch and half SJCE. He had never seen one like mine before. Apparently Frankenbuilt by Eades when I was told I was buying a brand new SJCE at the time.
 
Dellortoman said:
You're right Piet. I just had a look at the box of bits that was once my Jota's starter motor. The bloody stator is wound from rectangular section wire. The stuff is available (Here) but I don't like my chances of finding a local supplier.

I'd happily pay ?60 to resurrect this starter motor, if I can find a new stator winding. My starter motor has "Bosch, Made in Spain" stamped on the case, plus a bunch of numbers. I've had a look on line, and tried searching for those numbers on a Bosch starter motor website, but nothing comes up.

Piet - Can you point me towards a parts supplier for these motors please?
Click to expand...

:D

I'll have to check how many are left, last time I looked there were about a dozen main bodies and several winding sets on their own.  Not so sure about armatures, but they should easily be able to be rewound locally if need be, nothing special there.  No shortage of field cores and service kits, a whole box full.  Brushes and brush holders also available.

Bosch produced globally, usually where it was cheapest... nothing new there!  The pictured starter went to JLO, iIrc, it was also made in Spain.

piet
 
OK. I didn't realise it was you who had the starter motor parts! Perhaps when international shipping returns to relative normality, I'll buy a Bosch stator winding from you. Rotor windings on my old starter motor test out OK so I think it's only the stator that's buggered. The thing was drawing about a million amps but not making enough torque to crank the engine.
 
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