DKW NZ 250 1939 frame problems

stalker · Post by **stalker** » Sun Dec 20, 2009 6:14 pm

Hi Everybody!

Can you tell me how can I take apart this sector of my bike???

Is there some problems with my frame?

Regards

Post by **Wilhelm_Heidkamp** » Sun Dec 20, 2009 8:53 pm

Just take a rubber hammer and try to get the side shown left on your picture apart, then the other parts will be easy to get out. All screws are removed, so there only can be some rust or sth. keeping that part on the frame.

stalker · Post by **stalker** » Sun Dec 20, 2009 8:56 pm

Thanks I will try this on monday maybe...

And is the welding OK, where the handlebar locker is?

Post by **Wilhelm_Heidkamp** » Thu Dec 24, 2009 2:32 pm

I can see no abnormal welding... which one do you mean?

stalker · Post by **stalker** » Thu Dec 24, 2009 9:53 pm

Hi!

Thanks for the answers... Here are some more pictures from the bike. In my opinion there are too many weldings (I never so another NZ 250 frame...), and they are too big and not so beautiful.

The frametable seems to be totally original, because of it's place and the it's material is aluminium in my opinion:-)

Tha frame number is correct, the same in the table as at the rear suspension: 541046, 1939

Can you tell me if it is original or not? Is there some problems with it?

Is it possible that during the whole manufacturing period only 27600 piece was made from this bike (between 1938-41)???
Regards

Post by **Wilhelm_Heidkamp** » Fri Dec 25, 2009 12:22 pm

Don´t worry! Everything is ok with your frame, and the weldings and the frame plate is original and originally fixed on the frame, too.
Even the number on the frame has the correct design. the weldings you ask for, are 70 years old and were the first ones done on a frame like that in human history ever, so it is normal they aren´t as beautiful as modern ones.

Nice to see that you got disassembled the part you asked for some days ago.

I don´t know the production account of the NZ 250 but you must be certainly right, the NZ were built much longer (58000 bikes) and the NZ 350-1 and the RT 125 n.A. 12000 bikes each, so I think your number is realistic.

stalker · Post by **stalker** » Fri Dec 25, 2009 4:42 pm

Hi!

Thank you very much for your patience. I hope that my bike will be restored in a year, sometimes I'm in hurry, sometimes I have more time to deal with the bike...

Here are some more pictures with more problems, just take a look at them please, and sure me that everything is fine... The last picture contains a smaller problem that need to be answered.

Sorry for asking so much, but I'm a beginner DKW owner, previously I had only IZH49...

Regards

Post by **Wilhelm_Heidkamp** » Fri Dec 25, 2009 5:58 pm

Everything ok with it!!

Only the small ditch on the underside is not original - think a little about it if it is necessary in your country to get it fixed... I would not touch it.

New steering ball bearings are available here:

http://www.oldtimergarage.eu/store/prod ... cts_id=430

Try to get the old ones out by cutting the upper rimp. Be careful! Just the inner one! Compare it with the new item before cutting anything!

stalker · Post by **stalker** » Fri Dec 25, 2009 7:01 pm

If the only problem is which you can see on the picture here, than there is nothing I can do about it... My IZH has an even bigger damage there and I have all the papers for that bike and I use it when I want... If this is not the only bad thing you have spotted then pls show me the picture of it.

The IZH has the same bearings for here so I can buy thosi in Hungary for ledd money than at ebay, but thanks for the link.(30in, 48out). Do you now other bikes with the same bearing for there???

Post by **12345caravan** » Fri Dec 25, 2009 10:32 pm

Hi Stalker,
Easy fix while your so far,
did mine in 1 hour, and nothing to see after the repair.

Cut it right on the edges and weld it back. Even the original weld seems untouched.
Hate to take it apart after the restoration, if the man for the papers tell me it's not allright......
I would fix it but it's up to you!
Joop

stalker · Post by **stalker** » Fri Dec 25, 2009 10:44 pm

Hi!

I will decide in the near future...

Wilhelm your ideas, can you answer my previous question(s)?

Regards

Post by **Wilhelm_Heidkamp** » Sat Dec 26, 2009 1:10 pm

Yes, that´s the only problem I can see.

I can´t tell you which ball bearings from other bikes fit either, I only own a DKW.

stalker · Post by **stalker** » Sat Dec 26, 2009 5:55 pm

Hi!

If you can't see all the 4 pictures, than RELOAD the current page!!!Maybe there are too many pictures at this page:-)

Thanks. Just a few more "problems":

Can it be original??

Here are some cracks which are at the frame and not at the dead bearing..is this a problem???

Regards

Post by **thomas591** » Mon Jan 04, 2010 7:13 pm

Hi Stalker,

it looks to me that you have a serious problem with your frame. Probably accident damage.
I can see a numer of welds on the headstock were there should not be any welds. The broken bearing race and its recess in the frame indicate that the whole headstock was distorted during the welding or during the accident. If you would strip the paint from the front part of the frame you will see a number of non-original welds all around the top bearing recess. The dents of the lower part of the frame is absolutely standard... most bikes have hit the ground during their (rough) life. This can be repaired.
To me it looks like you need another frame from e-bay...Sorry for the bad news.

Thomas

stalker · Post by **stalker** » Mon Jan 04, 2010 10:04 pm

Thanks

Pleaase read my other answer in the handlebar topic...After these news I have no mood for continuing the restoration of this bike...The money is just going away, and I never ever ride this bike...