Bimota Forum

[welshlamb]

Hi folks.
Was there ever a separate spare parts list for DB2J?

Apart from engine and paint the main changes I can see would be the rear wheel and front disc arrangements. Interested to see if part nos are the same for rear wheel spacers across all variants.
ie long (nearest wheel) 5022811020
short (nearest swinging arm) 5022811030

I can find parts list for DB2 (HF and FF), SR and FE models but not DB2J. Anyone able to shed light on this??
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Not as many bikes as I would like and already too many to keep up with!

[2bims]

Well...Bimota are famed for always reinventing the wheel....so I wouldn't be surprised if there was.....albeit maybe it was only in Japanese....I would say that the frame and swingarm are the same....and given that the bimota branded wheels made by Oscam were built for bimota...that the hub would be the same even if the rim width was different....but....crunch with all DB2's...Vdues....DB4 etc...is chain alignment.....and for that it seems that the frame to engine spacers are where they tweaked tolerances and gaps to ensure correct chain alignment with the rear sprocket...generally....you would centre the front wheel....then align the back wheel...then centre the front sprocket to the back one...hence bespoke Bimota front sprockets.....but theres engine to frame spacers also

I always thought that the Juniors....like the Ducati F3's were only for the Japanese market but apparently not so....they just didn't sell well anywhere else...but did in Japan...where the "license" they had to pay for a 900cc model was only for the rich boys....but baby 400's were more affordable re license to ride...hence the "grey imports for the in line 4 400's...CBr...VFR...ZXR...FZR...etc

[brian]

Since becoming a DB2 Junior owner, I’ve wondered the same. The BCP website does have the Junior in their list of parts manuals, but when you click on it, the same DB2 manual comes up.... with nothing specific to the Junior.

My rear wheel spacers are as follows.....


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'99 DB4 #104, '96 SB6 #1165, '94 DB2 J #652, '99 DB4 #088, '08 VTX1800, '93 ZXR750R M1, '95 ZXR750, '95 ZXR750 Race Bike, '94 CBR400rr NC29 Race Bike, '94 CB250, '49 BSA C10 250, '61 BSA A10 650, '89 ZXR750, '91 Ducati 851

[brian]

I’d also be interested to get a hold of a workshop manual for the engine. I’m still not 100% sure what bike the engine is out of, but I’m pretty sure it’s from the 91 - 98 400SS. I tried my local (when I say local I mean 1000 klm away) Ducati dealer, but he said that he would need a VIN rather than an engine number to identify the engine.
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'99 DB4 #104, '96 SB6 #1165, '94 DB2 J #652, '99 DB4 #088, '08 VTX1800, '93 ZXR750R M1, '95 ZXR750, '95 ZXR750 Race Bike, '94 CBR400rr NC29 Race Bike, '94 CB250, '49 BSA C10 250, '61 BSA A10 650, '89 ZXR750, '91 Ducati 851

[welshlamb]

Have been thinking about this. ....all the LH spacers seem to be 15mm on my and Brian's bikes. Given that swing arms are the same and the eccentrics are a fixed point then chain alignment must be determined by that spacer and common to all the bikes.

Then the other two spacers (provided hub width is the same?) should only effect the rear brake/disc alignment?

Will post up my measurements tomorrow. Could be that I have mixed up some parts but pretty sure not so.
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Not as many bikes as I would like and already too many to keep up with!

[brian]

[2bims]

[2bims]

Brians Got the spacers set up correctly in his picture....you have to look and analyse where they "bind" up when fitted.....on the inner face of the bearings in the cush drive and RHS wheel......so that it all locks together when tightened and spins freely.....orientation of the spacers is critical to not foobarring your bearings

[hindsight]

[brian]

[hindsight]

That's an interesting number Brian - I always thought these engines decoded as follows:

Z = Italy
DM = Ducati Meccanica
400= 400cc
A = Air Cooled
2 = 2V
C = Carburettor

.. then the sequential number. I wonder what the A20 in yours signifies (noting that my DB2 also has a "A2C" identifier).

Unfortunately Falloon's "Standard Catalogue of Ducati Motorcycles" books omits the 400SS engine number format, but it does show about 2800 of those bikes being built between '89 and '97 (not counting the 400M figures).

Mike

[brian]

[hindsight]

Ah - so that photo looks to me to be exactly what I expected, with a "C" as the ninth character, rather than "0"

ZDM400A2C

That therefore puts it exactly where I would expect for a 400SS engine somewhere around about 1992-93, if the figures in the book are accurate.

The earlier 400SSJ had a different engine number entirely according to Falloon (ZDM400L).

[brian]

[welshlamb]