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 Post subject: Re: Son of The Grenade
PostPosted: 20 Sep 2011 22:02 
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proff. patpending
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One step closer to tears, the boring head has arrived...

Image

Graduations of 0.001" :twisted:

Sure, I could have used a boring bar in the four jaw, but I would have needed another excuse for some of India's finest tooling :run:

Interestingly, and I must say I know VERY little about this kind of stuff, it has to be run in reverse, and all the cutters are ground to suit, as the head screws onto the Morse taper on a right hand thread so running in the normal (anti-clockwise when facing the headstock) direction would unscrew the head... 8-)

Next job is the mounting plate for the piston...

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 Post subject: Re: Son of The Grenade
PostPosted: 28 Sep 2011 10:33 
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Sorry for the stupid question pash.......but.......what exactly are you building/trying to acheive ?

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 Post subject: Re: Son of The Grenade
PostPosted: 28 Sep 2011 11:46 
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proff. patpending
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Another S1 made out of bits rescued from potential choppers, scrapped engines (including bits from your old one) and tat from EBay :D

Currently I am fitting some cams, potentially 'properly', which may prevent other people from overlooking various aspects and bending valves or breaking pistons, hence taking a lick off the exhaust valve pockets... Interested to see how an SE536 cam-ed engine rides compared to an SE497 (Lightning) cam-ed engine.

Good job you asked, I had actually forgotten... :run:

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 Post subject: Re: Son of The Grenade
PostPosted: 28 Sep 2011 11:51 
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Joined: 29 Oct 2009 23:33
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Current ride: '04 XB12R
Location: Plymouth
So its an XB engine in an S1 frame ?

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 Post subject: Re: Son of The Grenade
PostPosted: 28 Sep 2011 12:05 
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proff. patpending
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No, it is only an XB top end...

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 Post subject: Re: Son of The Grenade
PostPosted: 09 Oct 2011 13:04 
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"....Do not despise the snake for having no wings.......for one day he may become.............'a dragon'!......." ;)


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 Post subject: Re: Son of The Grenade
PostPosted: 09 Oct 2011 13:06 
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proff. patpending
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Location: Bristol - Gateway to all things good
Have you been drinking?

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 Post subject: Re: Son of The Grenade
PostPosted: 09 Oct 2011 13:13 
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pash wrote:
Have you been drinking?


No, but all this talk of claying, hoofing, and milling ones valve train does generate a sense of alchemy and mysticism. lOl


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 Post subject: Re: Son of The Grenade
PostPosted: 30 Oct 2011 22:04 
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proff. patpending
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So, jig made with register for skirt location, piston pulled down to jig, jig mounted on milling attachment, boring head fitted...

Image

Getting closer to taking the 0.45mm out of the front exhaust pocket and 0.55mm out of the rear exhaust pocket.

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 Post subject: Re: Son of The Grenade
PostPosted: 31 Oct 2011 09:34 
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A grey tide eel
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Cool how are you holding the piston? Are you using the gudgeon pin?

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 Post subject: Re: Son of The Grenade
PostPosted: 31 Oct 2011 09:40 
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proff. patpending
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Yes, there is a picture earlier in the thread of the joint, which is pulled back to the plate by an M8 Allen screw through a counterbored hole...

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 Post subject: Re: Son of The Grenade
PostPosted: 31 Oct 2011 21:43 
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proff. patpending
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daywalker wrote:
Cool how are you holding the piston? Are you using the gudgeon pin?


So, the joint has a hole for the wrist pin and an M8 tapped hole to pull it back against the jig...
Image

...which has a counterbored hole for an Allen screw...
Image

...and holes for the bolts for the milling attachment...

The milling attachment was set at the right angle for the pockets, set using a dial test indicator, and the boring head set to follow the pocket already cut, then I took cuts of 0.1mm down to the required depth...
Image Image

...then tided up the fillets and edges with the Dremel, washed them off in the grease eater and then blew them dry with the air line...

Now I can get back to building the engine again... 8-)

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 Post subject: Re: Son of The Grenade
PostPosted: 27 Nov 2011 22:18 
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proff. patpending
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Son of Grenade is all about recycling bits and pieces. SoG will be wearing a set of XB lightning handlebars, which are a little lower than the S1 bars.

I was hoping to be able to use the Domino switchgear which was standard on the S1 and S1w, however the left hand switchgear locating hole in the XB Lightning bars is in the wrong position. Luckily I had a set of unloved M2/X1 switchgear, and here is where the party starts...

Somewhere in the life of this switchgear, the owner had decided to break the locating peg off on both sides.

Image

Perhaps he (or she) had fitted some aftermarket bars, without holes, however I find this switchgear does not give great results on smooth bars without the pegs, rotating easily when using the horn furiously. The screws screw into the plastic moulding rather than a nut or threaded metal insert and as a result do offer much force to clamp. I have seen people use insulation tape on the bar first before fitting the switchgear. The previous owner of this switchgear probably didn't have issues as from the state of the switchgear it looks like it was glued to the grip :run:

So, I went in my screw box and pulled out some M3 allen screws, and machined the heads down to 4.8mm diameter and the thread down to 2mm...

Image

This allows the new peg to be pushed into the hole which slows through the original peg into the moulding and no glue needed...

Image

Switchgear now locates on the bar...

Of course, I could have junked this switchgear and bought some more of the Bay, but with spares running out, I am all for make-do-and-mend...

I bet Willybuell is proud of me...

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 Post subject: Re: Son of The Grenade
PostPosted: 27 Nov 2011 23:21 
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Milf Hunter
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pash wrote:
I bet Willybuell is proud of me...


I know that I am. Nice work. :yup: :worthy:

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 Post subject: Re: Son of The Grenade
PostPosted: 28 Nov 2011 08:06 
pash wrote:
Son of Grenade is all about recycling bits and pieces. SoG will be wearing a set of XB lightning handlebars, which are a little lower than the S1 bars.

I was hoping to be able to use the Domino switchgear which was standard on the S1 and S1w, however the left hand switchgear locating hole in the XB Lightning bars is in the wrong position. Luckily I had a set of unloved M2/X1 switchgear, and here is where the party starts...

Somewhere in the life of this switchgear, the owner had decided to break the locating peg off on both sides.

Image

Perhaps he (or she) had fitted some aftermarket bars, without holes, however I find this switchgear does not give great results on smooth bars without the pegs, rotating easily when using the horn furiously. The screws screw into the plastic moulding rather than a nut or threaded metal insert and as a result do offer much force to clamp. I have seen people use insulation tape on the bar first before fitting the switchgear. The previous owner of this switchgear probably didn't have issues as from the state of the switchgear it looks like it was glued to the grip :run:

So, I went in my screw box and pulled out some M3 allen screws, and machined the heads down to 4.8mm diameter and the thread down to 2mm...

Image

This allows the new peg to be pushed into the hole which slows through the original peg into the moulding and no glue needed...

Image

Switchgear now locates on the bar...

Of course, I could have junked this switchgear and bought some more of the Bay, but with spares running out, I am all for make-do-and-mend...

I bet Willybuell is proud of me...


Is it going into a hardtail bobber frame ?


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