best way to prevent scoring pipes on tarmac

no750

It sounds like you are under sprung for your combined body and bike weight at both ends. So Yes on a slightly higher spring rate in front, or a set of cartridges and springs that will allow adjustment of compression damping to reduce dive. If the rear shocks are old try the ikons with a spring rate better suited to your body weight. Problem with getting springs that will work if you are a big guy is the ride over rough surfaces might get a little stiff.
Thanks for your profound reply. I do ride rough surfaces a little stiff already and i am about 100kg. . I didnt change the fork springs on my rebuild, but ive got "new" girlings.

What would be the way to go for a reduced dive in the forks?

Bild-Url: https://up.picr.de/44795232qa.jpg
 
I have found that getting older helps reduce the scraping, no other adjustment needed :)
I just turned 65 and have been riding my Norton since I brought it new in 1976 when I was 17 years old, built the Commando/Featherbed conversion from 1980 to1982 and have done a few up grades in that time, I still ride hard and I know how my bike handles, why have a light weight, torque motor, a bike that handles like its on rails and not push it to its limits when out and about, I still ride the same as I have always done from my youth to now and so far I haven't found those limits yet, yes I have been down a few time pushing it through the twisties but was my own fault and not the bike, mostly gravel on the blind corners don't help lol, its just the way I ride but I been riding dirt bikes as well road bikes for over 50 years now, but I ride more smarter now, have nothing to prove but still I ride the same way and I have never lost a bike from any accidents, but had done damage to myself lol, 3 left knees injuries from my younger days, one fracture left arm and a broken left thumb about 8 years ago, and of course scrapped skin here and there, not bad for 50+ years of riding hard.
I have never been hurt in the dirt and all my injuries have been on my road bikes, Norton and Triumph of old but haven't been down on my modern Thruxtons (touch wood) and I still ride my 2006 Honda CRF450X in the dirt, the good thing about riding dirt bikes you learn a lot of skills for the road and nothing worst than cleaning gravel out of scraped skin (gravel rash) got to get every bit of gravel out its more painful than a fracture arm and a broken thumb.

Ashley
 
Thanks for your profound reply. I do ride rough surfaces a little stiff already and i am about 100kg. . I didnt change the fork springs on my rebuild, but ive got "new" girlings.

What would be the way to go for a reduced dive in the forks?

Bild-Url: https://up.picr.de/44795232qa.jpg
Lansdown kit for the frontend (fully adjustable) and good shocks on the back I been running Koni's on my Norton for 40+ years and good rubber on your rims. (Koni/Ikon's are all rebuildable)
 
Thanks for your profound reply. I do ride rough surfaces a little stiff already and i am about 100kg. . I didnt change the fork springs on my rebuild, but ive got "new" girlings.

What would be the way to go for a reduced dive in the forks?

Bild-Url: https://up.picr.de/44795232qa.jpg
Not so sure about the profound part... Honestly even though I have a lot of motorcycling time on the clock and have played around setting up plenty of motorcycle suspensions, as have many others here, most of what I said is in manuals that came with motorcycles I have owned in the past. Plus it could be totally wrong and your pipes are sticking out on the side too far. :)

I'm not familiar with doing anything to Roadholder forks or Girling shocks. The Norton I've had for 49 years had no suspension on it when I got it. I didn't put it back together as original. The stock suspension on a 70's something Commando I had for a while in the 1980's worked pretty good, but I was a lot younger and stronger then. I'm 30lbs lighter weight than you are as well.

Ashman's last reply in post #23 makes sense to me given the suspension you have. It could be the least expensive option to work with.

If you want to spend money, talk to Maxton Suspension about replacing it all. I believe they are familiar with what works on a Commando.
 
Not being made to take apart, I found there's not a lot you can do with stock rear shocks, if they're tired, other than check they have max preload. I went for Hagon shocks on mine. Half the price of Ikons and I'm happy with them, to the point I no longer think about my rear shocks when I ride. On the front, I improved my damping by replacing whatever it had in the forks with fresh 20 weight dedicated fork oil. Not perfect, but better.

It won't affect ride height, but I found some of my engine mounts were a little loose. Tightening them improved my feel for the road and massively reduced vibration.

For less than £300, I'm happy. The suspension now is perfectly fine for spirited road riding, yet 'characterful' enough to remind it's a 50 year old bike (on suspension designed more like 75years ago :) ). I love it!
 
Good excuse to invest in a Maney 2 into 1 I reckon
Aren't they the ones that stick out too far on one side then have a couple of right angle bends. I'm sure they will be efficient, but they look like someone's first pipe bending practice that got left on the bike.
 
Aren't they the ones that stick out too far on one side then have a couple of right angle bends. I'm sure they will be efficient, but they look like someone's first pipe bending practice that got left on the bike.
May not be the prettiest
But designed for a purpose
 
There are two type of Maney exhaust , main difference was on the drive side one , first one have a short lenght exit before first bend , then a longer exit before first bend , I suppose Steve had concluded and tested the second one were better , mine were the first type a gift from my good friend Dan Parker ....
 
no750
Hard to tell from your picture, but there looks to be quite a bit of "air" between the header pipe and the primary.
Pictures with the bike on the center stand, made from the left and from the front, may give more info.
 
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