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CB400 Four special (Mr Sinx II )

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Northy:
With the engine running , time to press on with other things . Footpeg and linkages still some tweaking required but not too cluttered

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Time  to look my rear end  ::) :o  and seating ,  would have liked the Cb750  style seat but  gave up  and gone back to the 1980  design of a 2/4  seat, cb900 tail fairing  and set of tractor trailer lights

Well in my draws there was a one of these, a spare from many years ago (PS my Dad was agricultural engineer ,hence the tractor bit and frame in massey ferguson red at one point ) 
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Alas only one , so I will moving to LED on the rear .....modernising it 

However  can't remember if I secured the taillight to seat or the bashed up rear mudguard ...having to start from scratch here then.

So take one Cb900 tail  and cut it up  and mount  to 2:4  seat
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Its don't fit right .....Arh knew this was the case ,so off with the cover and time to adjust the seat. So I've wrecked a Cb900  tail unit  and now a 2:4  seat, needs must 



 




 

Northy:
So with the seat cover off , it revealed its was made in 1981  :)

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After a bit of cutting and adding new foam etc  we get to this stage, with  the sockingette holding the foam in place for the time being
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Next to the rear mudguard. Many years ago i remember  bashing one out of bit of galvanised tin , brazing up brackets to it a covering the thing with filler and black paint, just to make it look better ..In truth it was mess had extra holes in it were I cocked to the measurements etc .

So  Despite measuring and checking there comes a time when you have start bending metal , this was a bit of Stainless steel plate which was on thick size , photo is the not the finished article but you get the idea.
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Then you fit all together and find this ...
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Someone previously had re-welding the seat hinge bolts in the wrong place.

So awaiting some LED lights , seat vinyl/fabric  and thinking of way of attaching all it together. 

taysidedragon:
Modify the hinge bracket or make a new one to move the seat back and line up with the seatlock.

Northy:
Already sorted the seat out , ground off bolts and added new ones in the right place. :) ;)
 

MarkCR750:
What a terrific bike this is becoming 👍

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