Why front caliper on one side or another?

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Getting my Peel slut mocked up for one last several $100 dollar welding escapade to notice the fork kept tipping to the RH and noticed it was d/t the weight of the caliper on that side so had to turn bars 5+ degrees to L to keeping from hitting top crash bar. Thot struck me [didn't hurt much] that a caliper on the LH would tend to make forks favor a slight LH twist which would tend to compensate by counter steer the slight LH drift tendency common to many bikes on crowned road ways. Commands are heavier on LH side of CoG to point I can tell they fall over a bit easier to L than R, so like the more neutral sense with a bit more mass helping favor the RH fall downs. I've read the other factors for which side and front or back of forks for pendulum effect but I now think just the side/side weight bias may be the most significant. Just stuff to run through your minds while flying along on such unique craft so similar to new Harleys. Add on the rotor and pads and might be enough to noticed plainly hands off w/o having to go into free fall to tell.
 
With that logic you should have nuteral steer with duals on the front.
 
If I don't stop looking at this forum and getting all these truly great ideas, I'll never get Lord Enki out of the shop and on the road. At least in time for Barders this year! :D
 
Yes paired brakes would equalize out gravity effects so just the whole bike CoG and road crown and tire wear would determine drift bias. I don't find gryo effects as being biased one side on the other but sure do use gryo resistance to help flip Peel off her tracks. I do catch air some at home lips/berms and don't notice bike tending to lean to any side or twist on its vertical CoG, thank goodness. Will have to play with weight on forks and see if I can detect it or just run w/o front brake and see. Its these very tiny details that can make or break limits of performance or ease to fiddle something hands off a spell.

Huh, just put adj wrench and pliers on the LH forks and now fork stay put centered. Yesterday I rode in high winds in long straights and bike naturally took a 5' lean and if I held it up straight would be blown across road by the wind, but was not a bother being buffeted to hold line much - though one gust and slight bump actually lifted front out of traction for half a tire width drift, then just carried on at slight lean into the wind going 60. Wind has more effect than the caliper for sure.
 
All Nortons must lean to the left a wee bit to compensate for the road not being flat. Unless of course if they are driven on the other side of the pond .
 
Saber13 said:
If I don't stop looking at this forum and getting all these truly great ideas, I'll never get Lord Enki out of the shop and on the road. At least in time for Barders this year! :D

hello Saber13
Lord Enki:: what an unusual name for your bike. very good to see. was lord enki the destroyer of earth or was it his brother enlil. Have you an interesting story behind the name. love to hear it.
kind regards
Bradley
 
had to look it up > oh my

Sumerian texts about Enki often include overtly sexual portrayals of his virile masculinity.

Why front caliper on one side or another?


Peel mostly mocked up looking like a collection of old art deco Hoover vacuum cleaner cases on steroids & mushrooms, after a date with a Borg and his feral pet in a briar patch. Hot Damn.
 
bwolfie said:
Don't forget to calculate in P factor.

Ah yes, the Pee factor. The bladder, having consumed 6 pints of beer, lies to the right of center, explaining why many Nortons end up being pulled into the ditch. :mrgreen:
 
and let us not forget to factor in that our Commandos tend to pull to the left due to more weight being on the drive side (nearside to you Brits) than the timing side (offside), also the side stand is on the left side, this adds a tremendous weight and gyro effect to this messy equation

level road humping along, take hands off bars and feel your weight subconsciously shift to the right to keep it going straight

therefore, Norton put the disc/caliber on the right fork leg to counteract this weight differential, clever

and this was ordained and true up until the 75 Mark3 when they switched it to the left side, because by then Norton riders had gained more weight in their right legs from kick starting through their formative years, muscle being heavier than fat and all....

warning: no one should believe a word I post....
 
LOL! unouptredn, good 1! > makes as much sense as anything I've heard. We know there ani't extra effort to steer an Interstate Combat for a couple of tanks in a day rides. Web is full of reports of bikes drifting either way and lots that don't.

There actually is theory that the heart slight L of center mass effects both the bike ease and pilot tendency to favor L leans. I'm partially in that school of thought myself from water ski days and on cutting horses in a tight pen. But I wasn't on Peel to observe the slight bias to swing L. When there is nil traction that little bit can become apparent. About to put front wheel on then I'll climb on Peel and feel the new bars and make racing sounds, which my big bird tends to mimic now...

Why front caliper on one side or another?
 
1up3down said:
warning: no one should believe a word I post....

You left yourself open with this statement.

I'll leave it go, you know people in glass houses and all... :D
 
I have two lockheed calipers on the front. Both are behind the fork sliders, but I've often wondered if it makes any difference,forward or back. I suspect if they are behind, the bike tends to be more stable. However I also suspect that the inertia effect of the two calipers is not affected however the two are located. If you apply a force to the axle of a gyroscope it will normally precess about another axis, so steer the bike or try to lay it over. The brakes are deadly because I use the old asbestos linings, however I like it like that. I've got a set of carbon pads and I've thought about using them mixed in various combinations in the two calipers. I think two carbon pads in one caliper and two asbestos in the other might not be too bad. As one pair fade, the other pair start working ?
 
During development of the disc brake, the caliper was located on the right side (when you're sitting on the bike). I suspect the only reason was that the right fork stanchion had a pad that the caliper could be mounted onto. The forks on the prototypes were genuine Cerianis, from what Italian production bikes, I don't know.

Wolverhampton gave up on disc brakes about the time I left (May 1968), as they were trying to get a sliding disk to work instead of using a sliding caliper. Sure, you push an 11" disk close to its outer edge and expect it to move smoothly on splines or dowel pins on a 4" pitch radius down by the hub. Dumb!, particularly as the disc was cast iron and the splines were aluminum.

I think the final disk brake design was developed at Andover.
 
Thanks for chiming in on more Norton lore Frank. My P!! had a decent drum brake I got ok with it but it wouldn't lock up unless pretty slow or loose stuff and never had to use it enough to notice fade. Its pretty much centered of course and didn't feel any different or tend to drift than other bikes. P!! instilled lesion that Rear Rules The Roost in my world, but couldn't lean so didn't ever learn road racing on it. Had to wait till I was 50, now 61,

THE Graveling lesions spank me harshly when I give wrong answers to its challenges and hardest test was learning Gravity helps steer a bike more than fork action or traction. When going over 12 mph [on tarmac] In my world the front helps steer with counter steering which turns forks enough the bike can fall over by pivoting on the axle and all the other influences are secondary, ie: cone shaped chamber from lean on curve or tire profile, so less tire OD near edges than center so walks front around then rear follows, gyroscope push off, which diffidently helps initiate a lean but only during fork motion not after they stabilize [i'm actually bragging I'm a jerky pilot when the going get FAST] and the tire patch being off set from center line so bike falls oppositely, which is also helping, some what but mainly the counter steer is the tire twisting on its patch action that does the real deed, hehe, d/t the trail counter steer putting more tire out on the inside of the leaning turn. Stand next to bike with it vertical and turn fokrs lock to lock which watching the action wiggle to the rear of bike as a push over away from direction front tire is pointing.

Which returns to my initial post, I think there is a subtle bike drift away from the side the most weight is on fork, d/t the forks slightly turning=falling to caliper side then bike can pivot back/down on axle, so it leans opposite caliper and 'Then' rear lean causes bike to going where its now pointing. The distance caliper mass is mounted away from sliders the slower the osculation freq and of course same with more mass hanging off somewhat. Mass out in front tends to add to fork turning on its own while rear mass would tend to self center, d/t to positions of mass to gravity pulling on them.

Interesting ideal Alan on two types of brake pads, one works better when the other ain't, hm. What if ya put two different pads on the same rotor, hm.

Anywho I no long consider turning thrilling until the bike is falling over on its own d/t the power loads and lean angle, then one must stop the low side crash, hehe by catching it with the front tire now turned into the turn, in the dang direction ya are aiming for so seriously, tire side scrubbing action resistance against axle angle allows rear thrust to sort of cause bike to 'fall' upward on axle pivot, which can easy escalate into a hi side save - or just stay in that limbo wonder land of falling don't as fast as falling up equilibrium which needs acceleration forward vector enough to constantly equal both the falling down and flipping up G's, which feels exactly like bring two N or S poles together the harder closer you press em the hard they repel. Get too scared to stay on insane power or run out of balance thrust power, SPATT! Think what ya may but I got my answers the hard way and sticking to it or else I get a spanking by my Master,Teacher,Guru,Shiva,Satan ... till my bones show through ripped flesh and I go blind in raging tears of fear. I learned this on SuVee but dang ridgid on balloon tires splishes and spashes so many things together at once it clutters whats really doing what and when. It was not until compliant tri-linked Peel with pegs on slider that all the influences completelly separate out to be felt distinctly passing through w/o reasonating with anything else, uncanny secure predicable neutral, that one can then explore new phases of road orgasms. Throwing yourself hard as ya can right at the ground and missing should be easier than pie and funner too.
 
I've thought about putting the two different pads in the one caliper, and it would probably be OK. However I would probably keep both pads in the one caliper identical. It would mean that the bike is always braking more on one side than the other, but that happens with single disc bikes anyway. It would change as the pads heat up. Using the four asbestos pads gives deadly brakes, four carbon pads give no brakes at the speeds the Seeley achieves. The mix would probably be much better. When I was using drum brakes, I always had a soft lining on the front shoe, and a hard one on the rear. On my Suzuki 250 two stroke, when I first started using it I used only soft linings in the drum brake. The bike was on methanol, so it slowed after two laps of most circuits, while the brakes also faded.
I swear that I will never use drum brakes again. Many years ago I was racing at very high speed when I tried to stop at a corner. The brake would not work so I pulled the lever very hard towards the bar,but the bike just kept going. The leader on the brake shoe heated up, and grabbed. I was launched over the front at about 90 MPH, onto the non-skid surface, and the bike became a mess of screeching metal, sliding beside me as I rolled every inch of the way. At least disc brakes are predictable, and you can always grab a handfull without launching yourself. Drum brakes should be banned.
 
Damn Alan I love-hate your terror toss off tales. i learned about nil drum brake on '69 Bonnie coming of my Gravel drive way and the sudden over grip skip out on '71 Cdo about 30 mph but fortunately hit the grass first and rear swung far enough so hit the oak tree with me mostly protecting my friends ride. Peel toss offs parts got the front back to snuff and JBW the leak created by head steady.

The more I learn the more I only pay attention to gravity and rear thrust or letting go. Some times I fling a knee out to help bike tip or more to keep it from tipping to outside while trying not to lean on THE Gravel yet must put down some turning force or roll off edge at tangent - w/o crashing going off the edge- just going off the edge to impact stuff head on upright like a real man, instead of putting that tiny little bit of fork steer in or rear slip power - to end up half hamberger before the final impact hurt. I can't think fast enough to switch counter to straight steer off tarmac so just use bars to tip in some lean and let them choose which way to aim and then help dampen them to stay in the type aim not snatched into a slapper.

Not many of these sublte influences can be felt in other bikes but there is so so little that bother Peel there's nothing left to explore but degee's of ground effects lift/drop eddles, which also can be felt peeling off the sliders in turbulence vibration to cyclic oscillations, to give sense how light and useless Peel gets on front but changing into higher phases of engry the front leaves surface and if pressed hard the rear follows.

Gravity vs speed is a strange thing for people to grook, fire a bullet out rife at shoulder height horizontal and drop a bullet from shoulder height and same instant and both hit the ground at same instant but different distance traveled.
hehe, too many of our crashes are like that, only I've never crashes going fast while turning, so far. i've crashed plenty of times turning slow-ish but every single one of those had to do with trail braking or objects or stoppie on steep corners with a car-truck rushing up to cross my path if one of us didn't stop RIGHT Now. On tarmac there's a moment hesitation like Wilely Coyote - before the final drop starts and I hit the ground w/o even trying.
 
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