Author Topic: Leighton seats  (Read 5685 times)

Online lawnmowerman

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Leighton seats
« on: 04.08. 2010 13:36 »
Based on alanp's recommendation in an earlier topic I ordered a new seat from Leighton's. The seat came today and I have just finished fitting it. Although fairly expensive (£139 inc VAT and delivery) I am very pleased with it.
The Wassel seat fitted by the PO was incorrect for the bike and was probably used pre 59 and is narrower than the seats used 59 onwards. In the pic the Wassel is on the left and the Leighton on the right.
The Wassel seat was also flat at the top and did not have the different levels between rider and pillion which stops you sliding backwards. You can see the difference in the pic - the Leighton is at the top.
The cover on the Leighton has more of a grainy imitation hide effect which I think looks better and is as I remember covers back in the day. It is also more comfortable than the Wassel although I have not ridden the bike yet. After 60 miles last night on the Wassel I was walking like Jon Wayne! It still seems that I am sitting a little high so I may try a set of export bars a couple of inches higher although it may mean a new front brake cable - clutch looks like it may reach. Not sure if there will be enough slack on the horn/dip switch. Anyone fitted the western bars ? any advice would be welcome.
The seat comes bare with mounting bolts and studs so it was simple to swap over the front mounting but the holes in the mounting strap which sits on the rear guard were a little close together for the seat mounting studs so I took it off and squeezed the cranked ends a bit flatter in a vice which gave the necessary clearance.
This underlines our many discussions about quality of parts ? buy cheap and pay dear in the long run.
BTW does anybody know what the two frame lugs are for under the seat each side above the oil tank and tool box ? mine have a couple of bolts in them which do nothing and the PO has used one for an earth lug. You can see one of the bolts in the last pic with the head pointing upwards ? it looks like they may have been  mountings for a sprung single seat - but on a swinging arm bike???

Jim

1959 A10 SR
1938 Wolseley 14/60
1955 Ferguson TEF20 tractor
1965 Ferguson 135 tractor
1952 Matchless G80 rigid
1960 BMW R60
1954 Matchless G80S
1955 Ariel 500 VH
1951 Sunbeam S7DL
1960 Matchless G12 with Watsonian Monza
......and loads of lawnmowers

Too old to Rock and Roll but too young to die  (Jethro Tull 1976)

Offline tombeau

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Re: Leighton seats
« Reply #1 on: 04.08. 2010 13:53 »
Hi,
Regarding those bolts, they are for a sprung seat. I have an article from a 50s issue of Cycle magazine which tests a swing arm road rocket fitted with a sprung lycette, from the dealers.
Cheers,
Iain

Online bsa-bill

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Re: Leighton seats
« Reply #2 on: 04.08. 2010 14:34 »
There are rubber buffers that sit on top of those two bolts and take some of the weight of the seat.
Available many places, a bit of a fiddle keeping them on - a good contact glue is the way to go
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Offline iansoady

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Re: Leighton seats
« Reply #3 on: 04.08. 2010 14:52 »
I agree Leighton do top quality work. However, my personal preference as regards the look of the 2 seats you have is the Wassell as it sits closer to the frame. The Leighton looks perched a bit high.
Ian.
1962 Golden Flash (arrived)
1955 Velo Viper/Venom (departed)
2004 Triumph Tiger 955i (staying)

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Re: Leighton seats
« Reply #4 on: 04.08. 2010 15:05 »
I thought it looked a bit high Ian. Part of the reason for fitting the new seat was that the Wassel seemed a bit high. I wonder if the correct mountings are fitted or whether there are different types available to lower it a bit.
Bill, there is about an inch between to top of the bolt and the seat pan - not sure if the rubber buffers are that big or whether the seat is sitting too high.
I will give Leightons a call and see what they suggest - it may be that the brackets I am using came with the Wassel and are too high for the Leighton.
Jim

PS. Tried Leightons before I posted this but they are on holiday until 16th August so I will have a look through the parts books for original items.
1959 A10 SR
1938 Wolseley 14/60
1955 Ferguson TEF20 tractor
1965 Ferguson 135 tractor
1952 Matchless G80 rigid
1960 BMW R60
1954 Matchless G80S
1955 Ariel 500 VH
1951 Sunbeam S7DL
1960 Matchless G12 with Watsonian Monza
......and loads of lawnmowers

Too old to Rock and Roll but too young to die  (Jethro Tull 1976)

Online bsa-bill

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Re: Leighton seats
« Reply #5 on: 04.08. 2010 15:48 »
Buffers are about (barely) one inch with a 1/4 inch recess for the bolt

Draganfly have them as well as others, part number 42-9183 ,£2.70 each and for A' 60 to 62
you might have to put a longer bolt in, it's the same size/thread as the rear chain adjuster bolts
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Offline LJ.

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Re: Leighton seats
« Reply #6 on: 04.08. 2010 15:56 »
Jim... Thanks for taking the trouble to showing those pictures they help very much! I also have a Wassle seat on one of my A10s and it is high as you say but yet fits much more snugly to the bikes frame. Although looking good it is indeed uncomfortable so I know exactly what you mean.

The Leighton seat does not look out of place on your bike even though it sits a little higher off the frame and I'd imagine it is very comfy to sit on being a flatter surface.

I'm not sure what to do as I'm needing a seat for my Super Rocket which I'll be selling on later, it currently has a plunger seat and looks horribly wrong but yet incredibly comfy! sigh... decisions decisions?

What will become of your redundant wassle seat? To the back of the shed? Ebay? Bin? or to some nice fella on the forum with a begging bowl in hand?  *smile* (holding decent beer vouchers as well)
Ride Safely Lads! LJ.
**********************
1940 BSA M20 500cc Girder/Rigid- (SOLD)
1947 BSA M21 600cc Girder/Rigid-Green
1949 BSA A7   500cc Girder/Plunger Star Twin-(SOLD)
1953 BSA B33  500cc Teles/Plunger-Maroon
1961 BSA A10  650cc Golden Flash-Blue
1961 BSA A10  650cc Golden Flash-Red

Offline alanp

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Re: Leighton seats
« Reply #7 on: 04.08. 2010 16:51 »
Someone can put exact dates on this but the Leighton seat is the correct style for Super Rockets. The other seat is the style they fitted on earlier models e.g. my Gold Star had that earlier style (i.e. deeper front and thinner rear) and also B31s etc etc. Also the seat mounting bracket at the rear was different I recall. I wouldn't have bent the bracket you had and would have slotted the bracket's seal mounting holes to avoid that slight raised look. The correct seat will have more space under it than the earlier style and wrap the mudguard at the rear more.
Hope this helps.
Alan
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Re: Leighton seats
« Reply #8 on: 04.08. 2010 17:01 »
Hi LJ. Not sure what to do with the Wassel seat. I may try to see if I can get the Leighton seat to sit a bit lower as it is very comfortable and seems to have two sets of mounting holes underneath. I am using the forward set as that is where the mounting strap is mounted at the moment. If I move the mounting rearwards on the mudguard and use the rear mounting holes on the seat or perhaps make a new mounting strap I may be able to get it almost an inch lower due to the curvature of the mudguard. The front mounting is not the same as the mounting in my BSA parts book - the OEM part may get the front a bit lower.
I will ask Leighton's what they think when they come back from holiday.
If I can get the Leighton a bit lower then I will probably sell the Wassel to fund some export bars and a longer clutch and front brake cables. I think I will feel more comfortable with slightly higher bars as I have found that even with the step in the Wassel seat the overall seat height is about the same. This makes the standard bars feel too low to me and tends to mean that more weight is transferred to my wrists.
Never seemed to have that problem 40 years ago with clip-ons at the bottom of the forks and rearsets  *smile*

Jim
 
1959 A10 SR
1938 Wolseley 14/60
1955 Ferguson TEF20 tractor
1965 Ferguson 135 tractor
1952 Matchless G80 rigid
1960 BMW R60
1954 Matchless G80S
1955 Ariel 500 VH
1951 Sunbeam S7DL
1960 Matchless G12 with Watsonian Monza
......and loads of lawnmowers

Too old to Rock and Roll but too young to die  (Jethro Tull 1976)

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Re: Leighton seats
« Reply #9 on: 04.08. 2010 18:00 »
Thanks Alan. When I bent the bracket I slightly straightened the doglegs at each end as the holes were too close together so this would have very slightly lowered the mounting holes - they were only about half a hole out. I am not sure whether the front and rear mountings were also supplied by Wassel with the seat so it is worth doing a little investigation.
I do not regret getting the seat as it is so much more comfortable and as both you and Leighton's say, it is correct for the bike.
(10 minutes later)
I have just been out to the garage and taken the seat off to check the mountings and they do not look far off the OEM parts but when I removed the rear mounting and positioned the seat back on it looked a lot better - what do you think? I reckon I can bend a piece of steel strip and make a new bracket to fit the seat at that level.
The PO had also put a rubber strip between the bracket and the guard about 4mm thick to protect the paint so I will probably leave that there. He also put some between the front mount and the seat so I will probably take that out and elongate the mounting slots slightly to get the front a bit lower.
When I said in my earlier post that there were more mounting holes in the seat rearward of those used ? I actually meant forward ? about an inch. I could use those and move the mount forward which due to the guard curvature, would have the effect of lowering the seat but rather that put another two holes in the pristine guard I will make a new mount.
The seat does look quite chunky from the back but I will be fitting a 70s craven rack when I have made the brackets so that and the top box will tend to disguise it.
Thanks for the tip on the rubber buffers Bill ? I will locate some and fit them to give a bit of support in the centre.

Jim
1959 A10 SR
1938 Wolseley 14/60
1955 Ferguson TEF20 tractor
1965 Ferguson 135 tractor
1952 Matchless G80 rigid
1960 BMW R60
1954 Matchless G80S
1955 Ariel 500 VH
1951 Sunbeam S7DL
1960 Matchless G12 with Watsonian Monza
......and loads of lawnmowers

Too old to Rock and Roll but too young to die  (Jethro Tull 1976)

Offline Goldseeker

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Re: Leighton seats
« Reply #10 on: 04.08. 2010 22:26 »
I have a Leighton seat on mine which uses the rear most fixings and also looks too far away from the frame tubes. The illustration on a copy of the original RGS sales literature definitely shows a section of the frame tube hidden by the seat so something is not quite right.

As you have said, drilling another two holes in the guard is not really an option so I also need to play with the rear bracket to get the seat lower. I think the problem could be that the Leighton seat base is not as close to an original as it should be.
Col.

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Online trevinoz

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Re: Leighton seats
« Reply #11 on: 04.08. 2010 22:49 »
Lawnmowerman,
                           If you are using the rear bracket which bolts to the top of the guard, you are using the wrong type.
For 1960 on, there are two "L" brackets which bolt to the side of the guard.
Regarding the rubber buffers, you will need two 5/16" cycle bolts with lock nuts so you can adjust the height of the buffers.
If you don't fit them, you risk bending your seat base, depending on how heavy you are!
  Trev.

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Re: Leighton seats
« Reply #12 on: 05.08. 2010 10:10 »
Thanks Trev - spot on and worth a karma point. I thought of making a couple of L brackets but I wanted to keep as original as possible - knowing that this was standard practise means that I will go down that road instead of using the mounting on top of the guard. I would have needed to get hold of an anvil and used the barbie for heat to make the modified top bracket as it needs to be made of fairly thick strip.

Was the front bracket modified too after 1960?

I have just been to the garage to have a look and there are two holes in the sides the guard just below the front mounting holes on the seat which have a couple of spare bolts in so this must be the mounting points. I wondered what they were for. Looks like the design of the Leighton seat has been carefully thought out with two sets of mounting holes to cater for both mounting scenarios.

I will definately go for the centre supports with rubber buffers rather than risk bending the seat pan - the bolts are already there with lock nuts - one is being used for a main earth point for the leccies.


Jim
1959 A10 SR
1938 Wolseley 14/60
1955 Ferguson TEF20 tractor
1965 Ferguson 135 tractor
1952 Matchless G80 rigid
1960 BMW R60
1954 Matchless G80S
1955 Ariel 500 VH
1951 Sunbeam S7DL
1960 Matchless G12 with Watsonian Monza
......and loads of lawnmowers

Too old to Rock and Roll but too young to die  (Jethro Tull 1976)

Online RichardL

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Re: Leighton seats
« Reply #13 on: 05.08. 2010 11:34 »
This all-so-clearly explains why my later-style comfy wide seat sits too high on the original '55 mudguard with the top-mount bracket. Traveling right now, so can't check for the extra holes. There are some, but can't recall them in the forward seat hole location. Really, it would not make much sense to prepare a mudguard for a seat yet to be conceived.

Richard L.
Plan on signing up for the world-wide 2020 DISTINGUISHED GENTLEMAN'S RIDEon September 27, 2020 (if it's not cancelled and we are free to move about by then). Watch website at https://www.gentlemansride.com for details.

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Re: Leighton seats
« Reply #14 on: 05.08. 2010 13:35 »
I have located the brackets from Lyford Classics part no LCS5126B (42-6899) £5.99 a pair listed for 1960 onwards models. Also the rubber buffers which sit on top of the bolts used for the single seat option part no LCS5128 (42-9183) £2.30 each. Ordered them today so I will update with new pics when fitted next week.
Interesting that the SR could be ordered with the Lycette single seat as a factory option. Clears a lot of space on the rear guard for a luggage rack or small top box for tools and a few cans of beer if you do not need a pillion seat.

Jim
1959 A10 SR
1938 Wolseley 14/60
1955 Ferguson TEF20 tractor
1965 Ferguson 135 tractor
1952 Matchless G80 rigid
1960 BMW R60
1954 Matchless G80S
1955 Ariel 500 VH
1951 Sunbeam S7DL
1960 Matchless G12 with Watsonian Monza
......and loads of lawnmowers

Too old to Rock and Roll but too young to die  (Jethro Tull 1976)