Honda CB750 Sandcast

The Restoration Shop => Frame and Chassis Related Elements => Topic started by: 4pots1969 on June 12, 2014, 07:40:17 am

Title: As what It is always necessary to make a pre-assembly before the painting!!
Post by: 4pots1969 on June 12, 2014, 07:40:17 am

I do not know why, but I had the very good idea this morning to make a try of pre-assembly of the oil tank  before of peint the frame.
And fortunately because there, it one is very very bad suprise!!  >:( >:(  
The leg of fixation of bottom for the oil tank is too 10 mm high?? I do not understand?  ???
I make the try of the second oil tank and it is exactly the same problem??
I was obliged to unsolder the leg without the abimer to resolder her lower 10 mm.
My weld is not beautiful but very sincerely that of front was not better!!
Now, the oil tank amounts has the perfection. :D
Exist he of the different entraxes on oil tanks? ???

Thanks Gerard

Title: Re: As what It is always necessary to make a pre-assembly before the painting!!
Post by: Steve Swan on June 12, 2014, 09:30:50 am

That's strange, Gerard.  No oil tank mounted before ?

On the other hand, i think your weld looks as good as the factory weld !

Title: Re: As what It is always necessary to make a pre-assembly before the painting!!
Post by: 4pots1969 on June 12, 2014, 11:04:10 am

Steve..
All right with you neither better nor worse!!
I made a pre-assembly in real situations with news rubbers and with two oil tanks but so much I was amazed, I did not think has to make a photo before..
The measure the entraxe of the center of both holes is 250 mm (after modification)
Have you the possibility of confirming me this measure Steve?
Thanks

Title: Re: As what It is always necessary to make a pre-assembly before the painting!!
Post by: kenhan on June 12, 2014, 01:57:57 pm

Hi, on my #5128 the C/C is 250 mm

/Ken

Title: Re: As what It is always necessary to make a pre-assembly before the painting!!
Post by: Steve Swan on June 12, 2014, 02:01:24 pm

i don't have a bare sandcast frame to measure.  i do have a bare K4 frame i could measure, if you want me to.

Title: Re: As what It is always necessary to make a pre-assembly before the painting!!
Post by: 4pots1969 on June 12, 2014, 05:09:48 pm

Thank you for the measure Ken. ;)
Hum.. thus the leg was not welded at the right place.
A Japanese worker pressed to go to have lunch!!  :D