P11 A double seat

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Hello to All.
My 124938 frame does not have the two hooks to fix the seat (the double seat) like my other 122850 P11 (solo seat).
The question is how to fix the long seat on a P11A.
I have to buy the long seat and i would see a picture of the bottom side.
Thank you.
Piero
 
The P11A seat has two studs in the rear pan which fit into holes in the mudguard mounting strap that is brazed onto the rear loop. It is then held with two nuts on the studs. (The P11A frame does not have the frame crossmember that mounts the front of the rear mudguard as the P11).

The front mount is simply a tab that rests on the frame under the fuel tank as the P11.


P11 A double seat
 
The aftermarket Ranger style seat I bought from Baxter many moons ago to use on my '67 P11 has a fiberglass pan with a long tab on it at the front. As mentioned by Ron, the tab goes under the fuel tank. The short seats for the P11 were at the time not available, so I opted for a Ranger seat.

I used a P11A rear loop on my P11, but the brazed joints on the mudguard strap eventually cracked from the weight on them. My P11 frame is missing the heavier loop that would normally take the rider weight just before the shock mounts. I should have a loop welded on where it goes, but don't want to deal with a welder or tear the bike apart. So...

I made a set of brackets out of 1/8" aluminum flat plate that are riveted to the bottom of the pan and slotted to drop down over the shock mount bolts inside of the frame. Those brackets take the rider weight. I don't use the flimsy mudguard strap for anything but holding up the rear fender, or mudguard.

Below is what the bottom of my seat pan looks like. It aint pretty, but it works.

P11 A double seat


P11 A double seat

I should cut off those two studs since they aren't doing anything useful anymore.
 
The aftermarket Ranger style seat I bought from Baxter many moons ago to use on my '67 P11 has a fiberglass pan with a long tab on it at the front. As mentioned by Ron, the tab goes under the fuel tank. The short seats for the P11 were at the time not available, so I opted for a Ranger seat.



P11 A double seat



I should cut off those two studs since they aren't doing anything useful anymore.
Just for clarity, that is a P11A seat, not a Ranger 750. The term P11A Ranger was applied to some P11A's, but not all. The Ranger name was likely added by the US importer, Berliner. The last batch of P11's were the Ranger 750 which had a completely different seat and seat fixture system. The Ranger 750 had some minor differences on the frame from the P11A (and P11) also.
 
The aftermarket Ranger style seat I bought from Baxter many moons ago to use on my '67 P11 has a fiberglass pan with a long tab on it at the front. As mentioned by Ron, the tab goes under the fuel tank. The short seats for the P11 were at the time not available, so I opted for a Ranger seat.

I used a P11A rear loop on my P11, but the brazed joints on the mudguard strap eventually cracked from the weight on them. My P11 frame is missing the heavier loop that would normally take the rider weight just before the shock mounts. I should have a loop welded on where it goes, but don't want to deal with a welder or tear the bike apart. So...

I made a set of brackets out of 1/8" aluminum flat plate that are riveted to the bottom of the pan and slotted to drop down over the shock mount bolts inside of the frame. Those brackets take the rider weight. I don't use the flimsy mudguard strap for anything but holding up the rear fender, or mudguard.

Below is what the bottom of my seat pan looks like. It aint pretty, but it works.

P11 A double seat


P11 A double seat

I should cut off those two studs since they aren't doing anything useful anymore.
How's the foam on that BTW? I got a seat from Baxter and I sink right through it. Maybe I need to lose a few lbs. But when looking to rebuild my seat, high-density foam was super hard to find. I ended up trying a garden knee pad, and it wasn't bad but my seat pan was rusty junk. So I got the Baxter's and it's great but too soft. It's from the UK. The foam density should be 60lb 'very firm' (god, I spent a ton of time trying to find some, and learn about this, only to fail with my purchase in this regard).

Back to the original question, some photos on Baxter's website show the bottom of N15CS (and lists it as P11 too, with the front prongs) a '69 Dual Ranger seat, and a 03-2134 seat which looks sorta triangular like this one Shwany posted on the bottom. Not sure I'm adding value here haha.
 
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Just for clarity, that is a P11A seat, not a Ranger 750. The term P11A Ranger was applied to some P11A's, but not all. The Ranger name was likely added by the US importer, Berliner. The last batch of P11's were the Ranger 750 which had a completely different seat and seat fixture system. The Ranger 750 had some minor differences on the frame from the P11A (and P11) also.
Right you are.

To be honest all I meant was that I have a double seat. I should have said P11A seat, since that is what is written on the receipt. Digging up that receipt to check took a while. Had two receipts from Baxter. One stated short seat (P11) was back ordered, but long P11 and a Ranger seat (P11A) in parenthesis were available. Next receipt that came with the seat I bought said P11A seat. Both receipts were Feb 1993. Only 31 years ago. Right in my imperfect memory window.
 
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How's the foam on that BTW? I got a seat from Baxter and I sink right through it. Maybe I need to lose a few lbs. But when looking to rebuild my seat, high-density foam was super hard to find. I ended up trying a garden knee pad, and it wasn't bad but my seat pan was rusty junk. So I got the Baxter's and it's great but too soft. It's from the UK. The foam density should be 60lb 'very firm' (god, I spent a ton of time trying to find some, and learn about this, only to fail with my purchase in this regard).

Back to the original question, some photos on Baxter's website show the bottom of N15CS (and lists it as P11 too, with the front prongs) a '69 Dual Ranger seat, and a 03-2134 seat which looks sorta triangular like this one Shwany posted on the bottom. Not sure I'm adding value here haha.
When new the seat I got from Baxter Cycle was as you describe and ended up like riding on an ironing board because it was too soft, but not because the foam was bad, but because of the crap job done stretching the cover then glueing it and using staple fasteners. I pulled the staples and re-stretched the cover then fastened it down with small pop rivets. It is a big improvement when the cover is tight. All day rides are possible, but with a P11 of any flavor one needs to be in good shape to survive an all day ride.

I think Baxter Cycle may be selling the same seats they were selling in the 1990's.

About adding value:
Can't please everybody. Knock yourself out and post away. I enjoy your posts.

I've been told I have no purpose being here. Even though that is probably true, it doesn't stop me from posting once in a while perceived value or not.
 
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