Technical & Reference Section > Tech and Restoration
Help identifying my old BMX
dinglem:
Take pictures of all of the welds, both at the top and also on the drop outs.
Take a picture looking 'up' the head tube as it should be stronger, thicker tubing here (see below).
Several pics of the drop outs themselves from all angles.
I have also read some people can supposedly ID Bottema forks from how the slot in the threaded top end of the head tube has been created (compared to the more recent fakes) but I can't... but worth a piccie anyway.
You could also weigh them as they should compare to other M1's out there... they are thicker and stronger than other forks so this should be reflected in the weight.
Armed with that info people can make up their own minds.
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SRC1:
I'll take some more photos tomorrow, but the steerer tube in mine isn't thick like the one in the photo. Were they making fake Bottemas circa '84?
Jaymz:
There was fakes of everything in the 80's
dinglem:
'The slot for the headset locking ring is cut using a cutoff wheel or similar. Later copies are milled. It is easily identified when you look at them.'
This should be the next thing you check and photograph.
I know the skatepark M1's had an extra piece of short tubing welding in the bottom of the steerer tube, but I have also seen examples without this.
Got pictures of the welds on the drop outs too?
SRC1:
More photos to determine if they're originals or fakes. What do you think?
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