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just bought a DKW based Csepel 125 with unusual features
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larryc
burnley lancashire
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July 26, 2021 - 4:35 pm
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I have just bought this Hungarian Csepel Danuvia 125 it is unusual in that it has a 1 into 2 twin exhaust with Bantam style fishtail silencers, it also has a foot lever to operate the clutch alongside the standard left hand handlebar lever, I have had it running and it sounds just like a bantam, it is UK registered as a 1954 historic vehicle.

On the web are photo's but non with this exhaust or clutch system, I have also found a slightly different model with a printable handbook in English which will be handy, the lights are not working yet, it is a very well built bike with plunger suspension and a cradle type frame, similar carb and filter to the D1 / D3, it may have the original paintwork with pinstripes which have faded, 2 x large side toolboxes which are very stylish, I will have to fit the reg plate which I have and try to get the lights working and add a brake light.

If anyone has any info about this model please let me know. I have added 5 photo'sGEDC0068JPG.jpgGEDC0069JPG.jpgGEDC0071JPG.jpgGEDC0072JPG.jpg

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D1 plunger 2 x D3 plunger projects and a 1953 Hungarian Csepel 125 plunger

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cocorico
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July 26, 2021 - 6:14 pm
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What a lovely (and unusual) bike. Can you post a picture of the LHS of the engine. I know that many CZ / Jawa bikes have a combined kick start and gear change. The operation of the lever for changing gear also operates the clutch (and may deter opportunist scum thieves).

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larryc
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July 27, 2021 - 2:47 pm
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cocorico said
What a lovely (and unusual) bike. Can you post a picture of the LHS of the engine. I know that many CZ / Jawa bikes have a combined kick start and gear change. The operation of the lever for changing gear also operates the clutch (and may deter opportunist scum thieves).  

Thanks Cocorico, seems to be a standard type gear change, two photo's attached

LarryGEDC0068JPG-1.jpgGEDC0069JPG-1.jpg

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D1 plunger 2 x D3 plunger projects and a 1953 Hungarian Csepel 125 plunger

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colk2004
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July 29, 2021 - 3:09 pm
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OO. Liking that one a lot. Probably another bike taken from the WW2 reparations. Another DKW copy like the Bantam. Good luck with it.

Cheers Col

FB Falcon 87 needs wiring to finish. Ariel Arrow on the back burner, MZ125 running, Royal Enfield Classic love it, Velo LE waiting for spares, Simson Schwalbe now 12v and running.

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Number6
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July 29, 2021 - 7:07 pm
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That is well cool thumbs-up

Mike H --

Murphy's 4th law of motion states that any small object that is accidentally dropped will immediately hide itself under a larger object.

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larryc
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August 4, 2021 - 4:39 pm
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I have been struggling to get it going again, good spark, so I took the carb off, it has a fuel tap leak and the carb was full of gunge, cleaned carb and going to attempt to make new cork washers for the push pull tap, it is not a BSP thread so maybe metric.

I am certainly not 'leggydextorous', the kickstart is on the left, it is bl**dy hard to kick over, with my 'not as good as the right left hip', I have never had a left hand side kickstart before so now I have bruises on both feet by trying sat on the bike and standing to the left and trying with my right leg! so it is important to get it starting easily. there is no speedo so a cycle digital will be fitted £5 from Ebay, it now has an auxillary back stop and tail light.

Can't wait to have a run out on itold

Larry

D1 plunger 2 x D3 plunger projects and a 1953 Hungarian Csepel 125 plunger

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colk2004
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August 5, 2021 - 11:45 am
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It should be metric. I've had a lot of joy with using MZ stuff on restorations, like condensors, petrol taps, etc. Try Ost2rad, AKF, or the like. Weird with the kickstart as my Suzukis were left hand kickstart, like my GT500. I got so used to it over the years that I struggle with a right hand kickstart as the bike gets in the way. Easiest thing is stand at the side of the bike with it on sidestand and just give it a whirl. I'm also looking for the speedo solution for a 125 I'm restoring and looking at a GPS clock and 6v to 12v converter. 

Good luck getting it all sorted. Should be fun. 

Cheers Col

FB Falcon 87 needs wiring to finish. Ariel Arrow on the back burner, MZ125 running, Royal Enfield Classic love it, Velo LE waiting for spares, Simson Schwalbe now 12v and running.

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larryc
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August 6, 2021 - 10:35 am
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Cheers Col, sorted the fuel leak at the tap, I made 2 x cork washers and they work fine, I did not take the push pull ends off as they are peened over, I split the tap into it's main 3 x parts and fit the washers 

Larry

D1 plunger 2 x D3 plunger projects and a 1953 Hungarian Csepel 125 plunger

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larryc
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August 20, 2021 - 3:24 pm
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Help with carb please!

When I started the Csepel it was running a bit fast and then kept cutting out, I took the carb off to sort the fuel leaks all done now. I dismantled the carb and it was full of gunge, I noticed the jet was badly damaged and distorted the needle is straight and looks ok, It is all cleaned out now, I think the fast running was maybe due to a badly seated needle in the damaged jet and the cutting out due to gunge. I am struggling to find a replacement jet

The carb has FE18B stamped on it and the handbook says number 80 jet and the jet insert is 0.8mm.

Would it be possible to use an Amal 261 or 361 from a Bantam if I sleeve the stub, Csepel stub is 22.5mm outside dia whereas the Bantam has a 1" stub

The Csepel is 123cc.

Or does anyone know where I could get a 22.5mm replacement carb, or obtain the jet.

Any help is welcome

Larry

D1 plunger 2 x D3 plunger projects and a 1953 Hungarian Csepel 125 plunger

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colk2004
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August 20, 2021 - 4:08 pm
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Hi Larry, 

Is the jet a M5? In which case a BVF jet or DellOrto jet will work size for size. Alternative carbs. Rather than reinvent the wheel, you'll find MZ Bing or BVF carbs in the right sizes and correctly set up for a 125cc from the companies mentioned above. The Bantam was just another copy of the DKW, as was the MZ, however MZ tooling vanished after WW2 into the depths of Eastern Europe and Russia so your little bike is probably closer to MZs than Bantams....and you'll notice that a lot of people are ditching their AMals for Mikuni copy Pit Bike carbs which is another option. 

 

Cheers Col

FB Falcon 87 needs wiring to finish. Ariel Arrow on the back burner, MZ125 running, Royal Enfield Classic love it, Velo LE waiting for spares, Simson Schwalbe now 12v and running.

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larryc
burnley lancashire
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August 20, 2021 - 4:18 pm
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colk2004 said
Hi Larry, 

Is the jet a M5? In which case a BVF jet or DellOrto jet will work size for size. Alternative carbs. Rather than reinvent the wheel, you'll find MZ Bing or BVF carbs in the right sizes and correctly set up for a 125cc from the companies mentioned above. The Bantam was just another copy of the DKW, as was the MZ, however MZ tooling vanished after WW2 into the depths of Eastern Europe and Russia so your little bike is probably closer to MZs than Bantams....and you'll notice that a lot of people are ditching their AMals for Mikuni copy Pit Bike carbs which is another option. 

 

Cheers Col  

Thanks Col, I have been hours on the old tinternet searching, I will look at the jet to see if I can find a number, and check out the carbs you mentioned. Thanks for your help.

Larry

D1 plunger 2 x D3 plunger projects and a 1953 Hungarian Csepel 125 plunger

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FrankG
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August 20, 2021 - 11:22 pm
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Hi Larry it might be worth looking at CZ/Jawa as well as Cocorico said earlier the engine apart from not having the drop down kickstart come gear lever looks CZ like. had 2 about 20+ years ago so cant remember what carbs never had any trouble with them.

Frank

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cocorico
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August 21, 2021 - 8:26 am
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You may also find that a Dellorto PHBG will fit exactly over the  stub, though it might look a little too modern. I would have thought that a jet from another 'eastern bloc' carb, as above, would fit. Good luck.

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larryc
burnley lancashire
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August 23, 2021 - 4:19 pm
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Thanks chaps, still searching and exploring options which will fit a 22.5mm stub

Larry

D1 plunger 2 x D3 plunger projects and a 1953 Hungarian Csepel 125 plunger

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