[retrosuperturbo]

Сообщение от GLEX

Что такое флаттрек? Это гонка по гаревой дорожке, что ли?


Отправлено с моего iPhone используя Tapatalk

Короче там чот сложно.
Вот у нас и в Европе принятно в спидвей и ледовый спидвей. Там всё серьезно, чемпионаты под FIM, в ледовом наши всё выигрывают уже много лет, в грязевом спидвее только периодически, но тоже молодцы.
А флэт-трек я так понимаю, больше американское и любительское, и мотоциклы там более обычные.
Но я не особо разбираюсь.

Speedway Bike
500cc single engine
Methanol fuel
Single-speed transmission
No brakes
Leading-link fork,
hardtail rear suspension
70 mph top speed
Speedway bikes are the absolute bare minimum required to rocket you around an oval. There are no brakes or rear suspension. A methanol-powered single cylinder of no more than 500cc spits rider and machine around the course at up to 70 mph courtesy of a single gear. The whole package must weigh at least 170 pounds dry, and teams work fiercely to stick as close to that number as possible.

Flat-Track Bike
750cc V-twin engine
Gasoline
Four-speed transmission
Single rear disc brake
Conventional spring-fork,
monoshock rear suspension
140 mph top speed
Flat track machines are more recognizable as motorcycles. The big action happens in the twins class, where 750cc machines pump more than 90 horsepower into the dirt through a four-speed transmission. Top riders will see better than 140 mph on a mile-long track. Unlike speedway bikes, flat-trackers enjoy a single rear brake, which means riders don’t have to rely on the clutch, compression and pitching it sideways to bleed speed. Even the old gods have some compassion.

Speedway is 500cc singles running on very tiny , 1/8 mile or less I think, tracks with no front brakes. I think it is run in 4 lap heats with the winner or perhaps top two advancing.

Flat track is run on everything from 1/4 mile (short track) up to mile dirt tracks with bikes form 400 singles up to 750 twins depending on track length. the also run a TT whinc has right turns and a jump.
 

Bcordb3
Posted on Thursday, March 09, 2006 - 07:46 pm:     
Dave is correct in what he says, to elaborate a little, speedway bikes are a totally different animal, the frame configuration is a very short wheelbase and a severe rake on the front end (almost straight up and down, very low seating position, most of the race is done when standing on the high side peg and crossed up.

I am sure there are more modern speedway bikes and engines around. The old Jawa's and JAP singles ran a dead loss oil system in the crankcases, oil would feed through the oil tank to the crankcase and drip on to the track. Not only did they not have front brakes, they didn't have rear brakes either.

Very exciting to watch speedway racing. It was big in SoCal a few years ago, Orange County Fairgrounds raced one or two nights a week, A track in the San Fernando Valley, if I can remember correctly and one Perris.

No one used brakes on flat trackers until the disc brake became widely availible to motorcycles. Then it was just a rear. Riders used the rear tire to scrub off speed.

Back in the day, so to speak, a half-miler would reach speeds, into the 80,s and enter a corner, no brakes. Exciting stuff.

I say this first hand. I raced for a couple of years or so, both in the 250 class (novice) Bultaco Pursang and a Ossa DMR, as a junior I rode a 650 Triumph Bonniville, rode a couple of races on Harley XR750.

The milers would get to speeds upwards to 130 with no brakes!

There was a very famous man from Corona California who made what was called a hot shoe, a steel plated devise that fit under your boot to reduce friction while cornering. His name was Ken Maely, I died a few years ago, he is also in the Motorcycle hall of fame for his hot shoe and other parts that he invented over the years.

I am ranting about the old days, I guess that happens when one gets into their mid 60's
 

Jackbequick
Posted on Friday, March 10, 2006 - 08:16 am:     
Speedway racing is one of the most exciting forms of motorcycle racing for the spectators. It is about 98% rider skill and you're right on the track and can see it all. They have good guys, bad guys, regional favorites, and the regular fans really get into it. And beer, they have beer too.

AMA Class C flat track is the other institution that Bcordb3 is talking about. Bigger tracks, bigger bikes, and riders with much bigger cojones. If you've ever seen anything like the Sacramento Mile with about 30 bikes in the main at well over 100 MPH, you've never seen American style racing.

Ken Mealy was the Hot Shoe Guy - R.I.P Ken, you helped bring a lot of joy to a lot of people.

Ken made every major event on the West Coast and you could watch him at work. Free minor repairs were given to the racers at the track and they knew he could do it without screwing up the character of a shoe that was well broken in shoe and working right.

I watched him in a good natured argument with Dick Mann at Champion Speedway in Daly City one night. Dick had an old shoe with an almost non-existant bottom on it and he was trying to get Ken to "repair" it with a new bottom, and about half of the "cup". Ken was saying that's not a repair that's a free shoe.

Ranting is good Bill, it is a tribal legacy and good for the youngsters!

Jack

Оффтоп

Флэт-трек






Спидвей









Ледовый спидвей:








И на одной фотке оба:

В общем я помню, что спидвей у нас сильный с советсских времен еще, и гонок много проводится. Даж ходил в детстве