Author Topic: Gas/Petrol Tank Mounting  (Read 377 times)

Offline bl**dydrivers

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Gas/Petrol Tank Mounting
« on: 19.12. 2017 23:28 »
Can someone please provide a picture for reference on how the petrol tank is mounted?
I’ve ordered all the fittings from a well known source and the parts break up picture provided has allot of parts.

Is it pictured in the order it’s meant to be mounted by the mounting strap?

Offline cyclobutch

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Re: Gas/Petrol Tank Mounting
« Reply #1 on: 20.12. 2017 08:52 »
Wow – that’s a lot of stuff.

To affix my strap (67-8087), I just have a washer and a nut for each stud that sits under the tank.
For my centre bolt (42-8011), I just have the bolt and a washer. Then the rubber bung (40-8039) sticks in top of that.
42-8052 must be the side rubbers that plug in the frame somewhere at the front of the top tube. I guess 42-8049/51 is rubber sheet that wraps over the top tube. Maybe.
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'58 Iron Head Flash Bitza


Offline RogerSB

  • 1960 Golden Flash, Plymouth, Devon, England
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Re: Gas/Petrol Tank Mounting
« Reply #2 on: 20.12. 2017 16:54 »
Hi,


42-4078 and 29-8740 are No 2 & 3 in my parts illustration (see attached) that the petrol tank mounting bolt screws into once the tank is in place.

The rectangular rubber pads 42-8049 (3 off) are fixed (glue or taped) over the top tube of the frame to cushion the tank against vibration. 2 at the front and 1 behind.

42-8012 anti-vibration rubber sleeve fits in the tank mounting bolt hole, the washer sits on top and the bolt goes down through the lot to fix the tank securely in position on the frame top tube by screwing into 42-4078.

40-8039 rubber bung seals the mounting hole at top of tank.

42-8052 are rubber anti-vibration, anti-roll buffers and go one each side on the top of the frame at each end of the crossbar just behind the battery area.

67-8085 is a bridge plate and fits under the frame to clamp the frame top tube between it and the petrol tank. It locates on two studs, one each side, on the bottom of the petrol tank and is secured with the distance pieces, washers and nuts (see photo of one side on my A10).

Once you have everything together to look at how it all fits it'll be obvious.

1960 Golden Flash

Offline bl**dydrivers

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Re: Gas/Petrol Tank Mounting
« Reply #3 on: 20.12. 2017 17:05 »
Thank you for the well detailed explanation RogerSB and for providing the well needed pictures!

Looking at your picture, it looks like the distance pieces are above the strap.

Offline RogerSB

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Re: Gas/Petrol Tank Mounting
« Reply #4 on: 20.12. 2017 17:30 »
Yes, there's a welded seam on each side of the underside of the tank (seen in pic) and they would space it out so the bridge plate doesn't get bent when you tighten the nuts. Also there's the diameter of the frame tube to be considered.

1960 Golden Flash