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Re: Gel Pad on Seat
dave jones #824217 09/19/20 2:55 pm
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I think whats missing from this discussion is any mention of compression and rebound damping.

If the compression damping is set correctly and the right spring is used, then when going over a bump the shock absorber should compress smoothly but not bottom out. When the bump is passed the shock should expand again aided by the spring but limited by the rebound damping.

Many shocks dont have any adjustable compression or rebound damping at all, so the best you can do is speak to the manufacturer and try to get the damping adjusted using different hydraulic fluid and/or spring rates.

The IKON 7610 shocks are great in that they use adjustable rebound damping, the Hagon 2810's have adjustable compression/rebound damping so either are worth fitting and playing with to get the best combination of comfort.


1968 A65 Firebird
1967 B44 Shooting Star
1972 Norton Commando
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Re: Gel Pad on Seat
dave jones #824222 09/19/20 4:33 pm
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Many shocks have only rebound damping.


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
Re: Gel Pad on Seat
dave jones #824269 09/20/20 7:46 am
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Thanks to Gunner and Mark.

Will look into this.

Dave

Re: Gel Pad on Seat
dave jones #824278 09/20/20 2:31 pm
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Originally Posted by dave jones
I do seem to sit bolt upright on my bike. It is a normally set up American export 1967 TR6R with standard wide bars. The Uk bars would get me leaning forward a bit, maybe.

I have late-sixties Triumph bars on my A65, with a 5-inch rise. I reduced the length from 32 inches to 29 by cutting an inch and a half off either end. I guess I normally ride pretty straight-up, but when I'm encountering bumps, I scoot my butt back on the seat and lean forward.

I tried the "home market" BSA bars and didn't like them; they gave me a stiff neck from holding my head up. Also, they offered no leverage on rough terrain.


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
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Re: Gel Pad on Seat
dave jones #824426 09/22/20 7:35 am
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Thanks again, Mark.

I had a look at the Ikon site for shocks suitable for my bike and they have the ones as mentioned here with adjustable rebound damping and the ones called Basix which don't. The cheaper ones look to have progressive springs and look a bit like Girlings. How important is adjustable rebound damping?

I had a look for a review and someone with a Yamaha XS 650 which is similar to a Triumph said that the ride with the Basix was still firm but the spine jarring stuff had gone. I don't know what state his original shocks had been in, though.

Dave

Last edited by dave jones; 09/24/20 7:44 am.
Re: Gel Pad on Seat
dave jones #824442 09/22/20 10:53 am
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I'm using the Hagon 2810's on my A65 and these have 10 way adjustable compression/rebound damping and also adjustable spring rates. When setup correctly they do a superb job of absorbing bumps and potholes, so I can recommend them. They cost about the same as the IKON Basix but have the advantage of 10 way damping.


You need to contact Hagon or other suppliers as these shocks are built to spec see This Link.


1968 A65 Firebird
1967 B44 Shooting Star
1972 Norton Commando
Re: Gel Pad on Seat
dave jones #824446 09/22/20 12:07 pm
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Originally Posted by dave jones
How important is adjustable rebound damping?

I had a look for a review and someone with a Yamaha XS 650 which is similar to a Triumph said that the ride with the Basix was still firm but the spine jarring stuff had gone. I don't know what state his original shocks had been in, though.

Dave

Depends on the make of the shock, Id prefer not to have it, but the Ikons (formally KONI) do it well. The Ikons have fewer settings and those settings are numbered, the dials are also hidden by a rubber cover so you would have to know it was there if you were to adjust it.

I had a set of the 2810's, after having someone twiddle the dial when I was in the pub a few years ago, there was no indication that it had been changed, coming to the first decent bend the bike almost had me off (one side was set to soft and the other firm) I had to count the clicks on each side to know which had been adjusted. No rubber cover and If you have the shocks built to look normal they are in plain sight (these normally are made to be upside down style)

I have the NJB ultimates now, since ive lost a stone in weight it does feel a bit firmer than it did before, however I have never had to adjust the dampening/spring rate once since I received them.


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (undergoing restoration)
67’ D10 sportsman (undergoing restoration)
68’ D14 trials (undergoing transformation)

Re: Gel Pad on Seat
dave jones #824548 09/23/20 1:14 pm
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Thanks Gunner and Allan.

Looking at the 2810s I was wondering if they might interfere with the brake rod on my 67 650. I remember that the brake rod rubbed on the Konis I had on there originally although the brake worked ok.

Dave

Last edited by dave jones; 09/23/20 1:15 pm.
Re: Gel Pad on Seat
dave jones #824570 09/23/20 5:23 pm
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The best advice I can give is speak to a suspension expert.
When I got my Aprilia it had stock suspension. Even with the compression damping backed right off the front made my hands feel like I had "had the cane" at school and the rear was harsh and jarred the spine over any bumps or ripples.
I spoke to Maxton Suspension, they took details of my bike, my weight and intended use of the bike. They custom built a new rear shock with matched spring and re valved the front forks again with new matched springs. The ride is now smooth and comfortable, it does not get upset by bumps and hollows in the road even when banked right over at high speeds. Worth every penny


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Re: Gel Pad on Seat
dave jones #824574 09/23/20 5:54 pm
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Originally Posted by dave jones
Thanks Gunner and Allan.

Looking at the 2810s I was wondering if they might interfere with the brake rod on my 67 650. I remember that the brake rod rubbed on the Konis I had on there originally although the brake worked ok.

Dave

Was the brake arm in the upward position? If it was in the downward position the brake rod would be below the suspension bolt.


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (undergoing restoration)
67’ D10 sportsman (undergoing restoration)
68’ D14 trials (undergoing transformation)

Re: Gel Pad on Seat
dave jones #824607 09/23/20 11:36 pm
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Here's a couple of pics of the Hagon 2810 shocks as fitted to my 1968 A65 Firebird, as can be seen there are no clearance issues with the brake rod which is fitted down as Allen mentions. The brake rod just clears the silencer, the camera angle makes it look closer than it is in reality.

My A65 has the high level silencers which make adjusting the damper valves hard as they are out of sight behind the silencers at the bottom of the shock, so I haven't had problems with vandals trying to fiddle with them.

[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]


1968 A65 Firebird
1967 B44 Shooting Star
1972 Norton Commando
Re: Gel Pad on Seat
dave jones #824631 09/24/20 6:18 am
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Gunner, I had mine built so the spring pre load adjustment was on the bottom to appear original, I think with your high pipes and the shocks being “upside down” (or rather right way up for their original design) the adjusters are not seen.


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (undergoing restoration)
67’ D10 sportsman (undergoing restoration)
68’ D14 trials (undergoing transformation)

Re: Gel Pad on Seat
dave jones #824635 09/24/20 7:34 am
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Thanks for the new replies. On my 650 Triumph the brake arm is in the upward position so the rod does cause a bit of a problem. It clears the copy Girlings I have on at the moment. I will take a pic later to show.

I asked NJB if shrouds could be fitted to Ultimate shocks and they sent back a pic of them with shrouds which would keep the look. I have now sent a question about my weight and the bike.

Still awaiting a reply from Hagon about clearance, etc.

Dave

Last edited by dave jones; 09/24/20 7:47 am.
Re: Gel Pad on Seat
dave jones #824650 09/24/20 12:09 pm
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I have the shrouded NJB's on mine, they look better than original!


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (undergoing restoration)
67’ D10 sportsman (undergoing restoration)
68’ D14 trials (undergoing transformation)

Re: Gel Pad on Seat
dave jones #824666 09/24/20 4:09 pm
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Just noticed Andy Higham's reply- I will give my details to the shock manufacturer I choose to go with. Seems to have done you a lot of good if your bike rides well now.

Allan- the Ultimate shocks adjust down to 13.2". I think my bike also takes 12.9" and you said that you couldn't use them on your latest project. Would 3/10" make much difference? Can I use these?

Dave

Last edited by dave jones; 09/24/20 4:24 pm.
Re: Gel Pad on Seat
dave jones #824672 09/24/20 4:46 pm
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Re: Gel Pad on Seat
Semper Gumby #825050 09/28/20 7:26 am
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Thanks for the link.

Dave

Re: Gel Pad on Seat
dave jones #825829 10/06/20 9:21 pm
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I'm not a fan. To me they don't really do anything so I'd rather just have the stock saddle and get off when I need a quick stretch. If I'm doing a long leg, I'll just stand up on the pegs doing my best Johnnie Brittain impersonation until the ache subsides, sit back down and carry on.

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