Britbike forum Forums British Motorcycle specific Brands Triumph bulletin board Steering damper

Hello all,
I’m finally getting the time to start putting the ‘66 Bonneville back together in it’s full nut and bolt restoration. The answer to my question may seem obvious to everyone except me. Does the steering damper get grease between the friction disc and anchor plate or is it left dry? Everything on this bike was a dried up powder coated mess when I purchased it (I mean they didn’t even remove small parts. Just coated over the entire assembly in many cases), so even though they appeared to grease this area I’m not sure I would care to trust what they did.

Thank you

Brian
1975 Commando
1966 Bonneville (work in progress)

Brian, I keep the friction disc dry as grease would negate the friction ! To qualify this, my girder fork Matchless has friction discs in both front fork suspension disc dampers as well as for steering, and my Triumph '64 framed T140 special has the friction disc steering damper .

As Triless said, definitely dry.

The damper is very good on bad roads and windy days, just be sure to loosen it when you get into town!

My theory is that wind affects the down-road trajectory not so much by its action on the bike, but on the upper body of the rider. The wind pushes the rider, whose shoulders move, and the motion is transmitted to the handlebars. The steering damper virtually eliminates the effect.

The damper I retro-fitted to my 1969 T120R is the earlier version, as found on your 1966 Bonnie.

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Be careful not to loosen the damper too much or the adjuster sleeve (97-0408) will fall off, along with the star washer (97-0095). Triumph later modified the damper rod by drilling the end and installing a cotter pin.
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As pointed out by Dave below, there was no Triumph modification to the damper rod as stated. The sleeve nut and star washer are retained by 'locating pin' p/n 97-1286 (1966), and 97-2107 (1967-1970).

www.hermit.cc/tmc/om/manual.htm#stda

"Powder coating all over everything."

Ain't powder-coating just wonderful?

Thank you all. I figured as much, but though safest to tape into this wonderful resource.

The damper I retro-fitted to my 1969 T120R is the earlier version, as found on your 1966 Bonnie. Be careful not loosen the damper too much or the adjuster sleeve (97-0408) will fall off, along with the star washer (97-0095). Triumph later modified the damper rod by drilling the end and installing a cotter pin.

www.hermit.cc/tmc/om/manual.htm#stda[/quote]

I don't think I've ever seen a pre-oif triumph lower clamp (triple tree) that didn't have a set screw to prevent what you describe from happening. "66 parts book calls it a "locating pin - p/n 97-1286".I have seen that cotter pin used on BSA models though.

On a solo you just need the damper biting but not screwed down hard.
This will stop the head shaking on a long sweeping bend with less than perfect surface.
However on a road outfit you need it screwed down pretty tightly to stop the head shaking badly.
DAMHIK!

Dave, I looked in all the parts manuals from '66 through '70 and you're right about the there being no mod. I think the fellow who told me about that was saying that I should make that mod.

And you're also correct about the 97-1286 locating pin, so theoretically I shouldn't need that mod.

Steering damper grub screw 07-1286 on Ebay

Nothing stopped the the first nut from falling off after I installed the steering damper on my '69, but that could very well have been because the locating pin wasn't installed. Will have to take a look on the bike next time I go over to the Bonnie Castle.

The figures for the TR6C triple trees don't show that locating pin, but I guess they're just showing what's different from the T120 and TR6 trees in those figures so probably they have them also. I saw that the p/n changed in '67.

Tridentman,

Interesting observations, obviously from the voice of experience. But what do you mean by "road outfit" ?

Motorcycle with sidecar attached !

TriumphDave - No locating pin on my bike - will order one in the near future! Thanks for the heads-up - I've made corrections here and on the hermit.cc website.

Triless - thought perhaps so, but wasn't sure. Good to know. Front end oscillations with sidecar attached sounds like it could be pretty scary!

Hermit--confirm as Triless.
"Back in the Day" in UK with little money I ran a series of BSA A10 sidecar outfits as my only form of transportation.
On those a steering damper was essential to stop the head wagging!
If you ever have the opportunity--try it sometime--riding an outfit is truly the third way (the others being riding a solo bike and driving a car).
HTH

I ran a '47 Harley "74" with a side car some years ago. It had an inadequate small friction damper on the steering head

Only twice did the front fork ever go into a 'tank-slapper' on decelleration, but twice was enough!

i never did install a hydraulic steering damper, but I should have.

Another thing about sidecar rigs: People who HATE motorcycles will smile and wave when seeing a sidecar bike.

i used to own a 1950 hudson stepdown. same thing. everywhere i went i was a one-man parade.

But in what way , Kevin ? Because it was a cool car, or was the front end oscillating like a clown car because of lack of suspension dampening ?

Stephen, I have spent time with Kevin,he is a one man parade without the Hudson... lol.......I don't care for steering dampers when drilling through built up areas with sharp turns, I feel it makes the bike fall into the turn more than usual...Triumphs don't steer fast like modern sport bikes but they do, in my experience,get a little nervous at higher speeds so a light damper is ok.. Tapered roller steering bearings preload slightly may offer the same result...

you have no idea how cool a car a stepdown is, stephen. people would clap and chase me down to take pictures . . . once a punjabi convenience store clerk in gila bend arizona ran out of his store to exclaim that he hadn't seen a stepdown since he learned to drive in one as a child in the old country. they're beautiful but weird:



but their front-end construction was ahead of it's time. smoky yunick dominated nascar for three years with them, and it wasn' because their motor was any good:

i'm not completely sure how to interpret that, you know.

Had 1951 Pacemaker and never had steering concerns even when pulling away from 1959 Buick at 100 mph indicated in 1960.Just flathead six.,not the Hornet motor.

someone took a fourdoor and put a 7X in it 15 years ago and took it to bonneville. did close to 130 i think.

Kevin, definitely a cool car ! I can remember seeing Hudsons over here in the '50's that looked like yours ! I think OZ was a relatively healthy market for Hudson/Essex/Terraplane for a few years !

When I was still in diapers my parents had a Hudson. My mother says it was a very advanced automobile. Among other features the transmission could be operated in automatic or standard modes. When the automatic transmission broke down she said they just switched over to standard.

On another topic unrelated to Triumphs, I don't suppose anyone knows what's going on with Admin and S____t? Thread moved to a personal profile? What's happening?

If i'm banned for posting this all i can say is 'Bye everyone'.

Consider it a compliment, a remark about your congenial person and devotion to putting your pile of parts to the front of the pack...

The "Fabulous Hornets " you mentioned were tuned for Nascar by a young Smokey Yunick, about 200-210 HP.The Hudsons had a low center of gravity giving them better handling on the dirt oval tracks used in Nascar then...Flathead development was at it's peak and the new OHV V8 short stroke engines were still in early states of tuning..The Olds 303 OHV "Kettering" design combustion chamber had more potential but hydraulic lifters that pumped up at 4000 rpm limited power. Stock cars were based on stock cars back then and engine modifications were limited..By 1954 the OHV engines began to make power, then in 55 came the Chevrolet small block V-8 and the Chrysler Hemi dominance on faster paved tracks, the flat heads were finished forever..

Cool car, that Hudson. My neighbor had one in the 50's. All the neighborhood kids could fit in the back seat with three in the shelf under that back window. Smooth....

It had a fold up clutch pedal if I remember right.

Cheers,
Bill

Any more to be said here on STEERING DAMPERS?