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Discussion Starter #1
I know it does'nt count doing 100+ on one of these road rockets of today. You have to be on a 1959 Triumph with the bones shaking out of your head praying to god your bike holds together ( those guys have balls!!!!). For these new bikes you should have to break 200 mph. I think it would be a small club.

It takes a good 20 years to break a motorcycle in and after 30 "there back in style". Why buy a new one?
 

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do new bikes even qualify for the ton up club? thats pretty much cheating isnt it? and i know turbo busas and such can hit 200 pretty easily. we should make it truely a feet and say 2.5 ton up or go home.
 

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nope tonup doesnt even come close to working on a modern sportbike
i hit 105 in 1st on a modified zx12r in 2005

Political correctness

A doctrine fostered by a delusional, illogical, liberal minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.
 

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A 2.5 ton up club would be very exclusive. Right now there are only about three sit on bikes that have clocked over 250 mph. John Noonan averaged 259+ for the mile at Bonneville. A guy in England hit 265. But that was through a single set of lights not an avererage over a distance. And maybe one more guy in Australia. All were on turbo Hyabusas. Come to think of it it would be a VERY exclusive club.
 

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100mph+ is kind of a persnonal thing nowadays. I cracked the ton on my bone stock '72 Bonneville about 10 yrs ago,with my girlfriend aboard (she din't realise it at the time). 100mph is nothing anymore, considering what you can drive outta the showroom. The thing that makes 100mph cool to me is that I did it on a 30yr old bike, 2-up to boot. Personally I'd say that is equal to at least 175 solo on a new 'Busa.
 

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Kinda like my buddies who are in the Chicago Wiseguys racecar circuit. Where you have to have a 8sec car or faster to even be considered for membership ...

ProTeal55
Member: Ton-Up Club Chicago
1972 CB750 Hooligan/Street Fighter -4 SALE !
1974 CB/CL450 Cafe/Bar/Stripclub Racer
1955 Chevrolet Bel-Air Hardtop
 

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is that an indicated 200mph or a actual? My buddy has seen 211 indicated on hisnew R1 but in truth it was probably only 185-190.
 

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Discussion Starter #8
quote:
is that an indicated 200mph or a actual? My buddy has seen 211 indicated on hisnew R1 but in truth it was probably only 185-190.
I have heard that jap speedometers are about 10% off. I don't know if thats fact or not.

It takes a good 20 years to break a motorcycle in and after 30 "there back in style". Why buy a new one?
 

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quote:
I have heard that jap speedometers are about 10% off. I don't know if thats fact or not.
I always figured that on old stuff, and at high speed the cable can do weird things and throw them off even more. Back in the day when I cared what top speed was I used the tach.

I don't know about today's digital speedos, the error percentage should be constant at least.

Edited by - geeto67 on Jun 10 2007 09:38:36 AM
 

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I forget which magazine tested it but there was a test done a while ago (a year or two ago maybe?) where they radared a bunch of bikes and matched it up with their speedo readings. Every Jap bike was dead accurate at highway speeds but at top speed was nearly 15-30mph off. This was on new hayabusas, R1's, zx10s, cbrs, etc.

generally cable speedo drives tend to be uniformily inaccurate if they are having a problem. the actual mph number of the inaccuracy may increase but the there will always be one. Where as the new sport bike electric speedos tend to be accurate up to about 100mph and then start to grow increasingly inaccurate. I think this points out that the method of calculating speed in not well suited to handle higher speeds.

Edited by - geeto67 on Jun 10 2007 09:38:10 AM
 

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i've been eyeing these new gps based speedos. i've seen em on a bunch of choppers in the past 6 months or so. state police officer friend of mine says theyre more accurate than anyhting. reliable too.

Political correctness

A doctrine fostered by a delusional, illogical, liberal minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.
 

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A couple of years ago at Bonneville John Noonan used a GPS on his tubo 'Busa. The SCTA clocks read 259. His GPS read 260. So yeah, the GPS seems to be pretty accurate.
 

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what kind of speeds do top fuel drag bikes reach in the 1/4 mile? just curious. i read that some of those top speed bikes have the power to go faster, but traction becomes an issue as they are getting so much wind drag that the rear tire just starts to spin and they stop accelerating. but with top fuel cars hitting 300mph in under 4 secs, i would think the top fuel bikes have got around the wind drag issue
 

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Discussion Starter #14
This is getting interesting. I know on my 85 Gpz 750 that it is dead on at 60 mph according to those radar trailers the police put beside the road this time of year. I don't know about faster speeds, guess it would make a good project out on Rte. 11 some day. The only problem is I would have to steal one and set it up there because they only put them on 35 mph zones, and I would rather risk getting caught stealing the trailer than doing 125 mph in a 35 mph zone.

It takes a good 20 years to break a motorcycle in and after 30 "there back in style". Why buy a new one?
 

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Top Fuel Harleys run 220ish. On a good lap sometimes they have to burp em so it'll trip the lights with the front tire rather than the rear. They smoke the front tire like a jet landing<img src=icon_smile_big.gif border=0 align=middle>

Land speed stuff is a whole different animal. I picture the salt flats to be like running down a dirt road with a little sand on top. So yeah traction is always an issue. The magazines have taken stock bikes out there. They always slow down significantly. They've gained some of the speed back by bolting weight to the swingarm but never get them back to where they'd be on pavement.
 

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All of the really fast Bonneville and El Mirage bikes run weights on the rear end. Usually bolted on the swingarm. I was at El Mirage dry lake yesterday (Sunday). I saw a 'Busa with weight bolted to the swingarm. I asked the guy how much and he said 150 lbs.(68 kg.) Weight is a necessity to get bite at high speed. Its a simple case of H.P. vs. drag. Weight helps the traction. About 5 years ago Rick Yaccoucci was running a 'Busa. I made my run and turned out. He made his run and turne and stopped beside me. His mechanic came to tow him back. Rick asked him how fast he ran. The mechanic said "207". Rick hung his head and said "Shit, It was taching 230. I just couln't get it to hook up." Sure wish I could run 207 and say I couldn't get it to hook up.
 

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MPH being lower than the speedo value seems like a safety measure to me... I mean after 150 MPH you're just doing it to see how fast you can go. Why not lie a little and say you're goin 250 when you're goin 225?

BTW... Who's got time to look at their speedo at 200+ MPH?

Hey By'
 

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I don't think any motorcycle mfg intentionally makes their speedo inaccurate at high speeds so I highly doubt it is a safety thing. Mooreover the way a speedo works as a function of gear reduction means that there is only a range in which it is reading accuratly before it becomes opmistic or pessimistic.
 

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quote:

BTW... Who's got time to look at their speedo at 200+ MPH
Not 200 but a kid that lives down the street from me dug his camera phone out of his pocket and took a picture of his speedo at 171 on his CBR to prove to his friends how fast it would go. Nice kid, I'm glad he got rid of his bike before he won the Darwin Award.

04 KDX 200
01 GSXR 750
87 FZ 600 basket case
75 GT 550
68 Chevelle- trade for front motor digger
 
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