Can someone please tell me how the Slimline seat is securely attached?
My old rebuild case has a poorly recovered seat with a badly welded plate base and two crude spigots. The whole contraption doesn't fit properly. on the frame.
At the front it has the two horizontal tubes to match the two spigots on the frame (as in the AN frame drawing)
At the rear it has a Dzus fitting to attach to the mudguard.
On the frame near the top shock mounts, there are two brackets with holes (as in the AN drawing).
On the seat near the middle it has two crude vertical spikes which roughly match up to the holes in the mount points but do not go into the mount far enough to take any weight nor securely hold the seat in position. This means the Dzus fitting must carry half the weight on the seat. Surely not.
I do intend to have the seat recovered so welding/cutting of the base is not a problem.
Photos attached.
Advice (and hopefully photos) please.
Richard
You are missing the rubber…
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Slimline seat mounts
Hi Richard,
enclosed ( hopefully ) photo of slimline seat if that helps.
kind regards, Cliff
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Seat mounts
Just took this seat off a new project bike. Crude rework has taken place but the main areas of interest are. 1 tubes with rubbers inside to take the stakes off the frame off the tube across the top of frame.
2 Pads to sit on the sub frame top rails,
3 spigots that fit into the holes of the back of the top suspension mounting point. With rubber pads and finally;
4 the Dzus type quarter turn faster that locates on the rear mudguard.
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Thank you all
Thank you for your photos and comments.
Mine has roughly the same arrangement as in Jonathan's photos but has been extensively butchered in the past:
- front horizontal tubes are smaller diameter and no space for rubber bushes
- mine does not have the rubber buffer pads so no support in the middle
- the two spigots towards the rear, - on mine the spigots are very short and hardly enter the holes
- the distance between the spigots is not the same as the distance between the holes.
- the Dzus fitting in the mudguard is about 30 mm away from the fitting in the seat.
(How do such things happen?)
As I am going to get the seat re-upholstered and re-covered, I will attend to the problems using your photos and comments.
Thanks again.
Richard
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New seat?
Thank you George, yes, it will save lots of work.
However, to buy it and to get it here to South Africa will cost too much.
Exchange rate is now R21 to the GBP, shipping and import duties, tax etc, allow 75%.
R6000 is too much to add to the cost of the bike in my case.
There are local people who could make a fair job of totally rebuilding it - and they need the work (Corona virus!!)
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Dimensions
Do you want me to run a tape over it so you have some reference data to give to the locals? cheers
j
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Dimensions!
Jonathan,
That would help a lot, thank you.
Sorry for the delay, but I had to go away for a while - not easy in out very strict lockdown.
R
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No problem...
Looking at the underside of the seat with the front on the right the measurements are as follows.
From the Dzus fastener the 3/8” diameter pins (7/8” tall) are 8 1/2” to the right; they are on 7 1/2” centres and sit on brackets 2 1/2” tall. There is a 1/4” thick rubber pad over the pins.
Next at 8 1/2” to the right come the two round rubber pads (7/8” dia)on 8 1/4” centres; they sit on small stools roughly 3/8” high. Then come the two horizontal tubes on 3 3/4” centres fitted with 5/16” rubber bushes. They are roughly 7/8” deep (seat base to top of bracket). I note yours are mounted on a box section...
As a rough guide the Dzus fastener bracket underside sits roughly 4 1/2” from the top of the finished seat.
Cheers
Jon
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Thank you for this Jonathan,…
Thank you for this Jonathan, it helps enormously.
Just one question, what is the internal diameter of the two tubes at the front? The rubber bushes are 5/16", so the tubes must be substantially more. The tubes on mine are themselves 5/16" id so they are obviously wrong.
On mine, the Dzus fastener hole is 8 1/2" from the locating pins as in yours. However, the matching hole in the mudguard is 9 1/2" from the pins so I have the wrong mudguard. I'm not changing that, so I'll make a longer bracket.
Thanks again for your help.
I've attached a photo of what it looks like now, it'll be better with a decent seat.
Richard
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A bit corroded...
... but the rubber measures 7/8” diameter and is mounted in 1” deep “P” clips welded to the seat pan, heads towards each other.
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Hi Jonathan, Thank you for…
Hi Jonathan,
Thank you for your help, I think I have all the info I need to get it rebuilt reasonably.
Except for one little thing. I have had to order the two 7/8" rubber pads which sit on 3/8" high stools. Could you possibly give me the thickness of these rubber pads? This would help me get the whole seat modified to fit neatly in position.
Regards
Richard
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7/8" rubber
actually has a locator plug which goes through a hole in the seat. Will send a picture later; sorry I missed your response in the week, many postings come and scroll down too quickly.
Cheers
Jon
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Thank you Jonathan, This…
Thank you Jonathan,
This will help me get on with it.
The pads have been ordered but who knows when they will get here, post in SA is bad at the best of times.
When its finished I'll send a photo.
Regards
Richard
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You are missing the rubber bushes at the front ,buffer pads on the pan and rubber washers for the rear mounts. Knowing that my bike takes up to 30 stone when in the IOM I have also fitted extra rubber stops to support the pan .after all its 60 years old.