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Author: Subject: Seat Chassis Hole Marking ????
Avoneer

posted on 9/6/07 at 05:27 PM Reply With Quote
Seat Chassis Hole Marking ????

Anyone any tips on how to mark my floor for drilling?

And don't say with a sharpie!

Seat has two lengths of box section on each side (on the bottom) running from the front of the seat to the back of the seat, bolted onto the bottom of the seat as the seat base has threaded inserts embedded in the fibreglass.

My chassis has two 3mm bars running across tjhe chassis.

What's a good way of marking the 3mm bars for drilling?

No chance of getting a pen down either side when the seat is in situ.

Thanks,

Pat...





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theconrodkid

posted on 9/6/07 at 05:34 PM Reply With Quote
i got some cardboard and attached that to the seat runners with masking tape,poked holes where bolts would go.put seats in where you want them,tape the card to the floor and un-stick the card from runners,as seen on blue peter





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DIY Si

posted on 9/6/07 at 05:55 PM Reply With Quote
What I did last time was to get 4 spare bolts, grind them to a point that stuck out of the seat by a few mm. Then put seat in place and sit in it. You then have 4 marks which will also help you start the drill.





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rusty nuts

posted on 9/6/07 at 06:54 PM Reply With Quote
Place seat in position and use a scriber , the type with a right angled end. Worked for me
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stevebubs

posted on 9/6/07 at 07:05 PM Reply With Quote
cardboard templates that protrude from the front of the seats...
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stevebubs

posted on 9/6/07 at 07:06 PM Reply With Quote
quote:
Originally posted by stevebubs
cardboard templates that protrude from the front of the seats...


reading rest of thread - Just as conrod said

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Avoneer

posted on 9/6/07 at 09:34 PM Reply With Quote
Just worked out that I want to raise the seat a little so....

1) Cut two 25mm box lengths and put them on top of the 3mm bars and the drill straight through and bolt them down through the 3mm bars and floor.

2) Put 4 dobs of body filler (great adhesive) on the newly bolted box sections.

3) Drop the seat into the car and wiggle it into position.

4) Wait a few hours.

5) Unbolt the cross bars from under the floor.

6) Lift the seat out with cross bars adhered to the bars already bolted to the bottom of the seat.

7) Weld the cross bars to the bars already fitted to the bottom of the seats.

That'd work wouldn't it?

Pat...





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Avoneer

posted on 9/6/07 at 09:35 PM Reply With Quote
Oh, just to clarify:

Not using runners.

Pat...





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Avoneer

posted on 9/6/07 at 11:40 PM Reply With Quote
Thought of that - but that's a one drop situation and I want to wiggle the seat amd make sure it's spot on.

Pat...





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DIY Si

posted on 9/6/07 at 11:45 PM Reply With Quote
Should work. Just make sure you don't move the seat standing up, or it'll be a bit out. Maybe get someone to give you a hand so you can almost be lifted out?





“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
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stevebubs

posted on 10/6/07 at 12:12 AM Reply With Quote
quote:
Originally posted by Avoneer

That'd work wouldn't it?

Pat...


Think so.

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RazMan

posted on 10/6/07 at 07:33 AM Reply With Quote
I went with DIY Si's method of pointy bolt ends & cardboard when I fitted my seats. Nice and simple and it worked surprisingly well





Cheers,
Raz

When thinking outside the box doesn't work any more, it's time to build a new box

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Avoneer

posted on 10/6/07 at 07:36 AM Reply With Quote
Yeah, but the inserts in the bottom of the seats aren't in the same place as where the 3mm bars across the chassis are.

Pat...





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RazMan

posted on 10/6/07 at 09:42 AM Reply With Quote
In which case, how about attaching a couple of spreader plates to the chassis rail first? That would give you loads of room to move the seats wherever you need them to go.

Just a thought ...





Cheers,
Raz

When thinking outside the box doesn't work any more, it's time to build a new box

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Peteff

posted on 10/6/07 at 10:04 AM Reply With Quote
Bolt your 25mm box sections to the floor first.

at the right width spacing then drill a series of holes in it to correspond to the bottom of your seat so they are lightened and adjustable as well. I tacked the bolts into my seat bearers so they were captive as there is no way to get a spanner under there.





yours, Pete

I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.

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Avoneer

posted on 10/6/07 at 11:24 AM Reply With Quote
The inserts are embedded into the bottom of the seats and you can't access them from above.

MK type seats.

Pat...





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