Petrol head thread!!!

[billy rubin]

yes. sitting on the stand the motor will rev to 7000.

thats as higgh as i can risk the connecting rods without a load on them. no problems.

but on the race ciurse it wouldnt pull.

it could have been fuel, but everything was fresh out of sealed cans. and fuel flow was excellent. all the connections were good and there was13.35 battery voltage all through the harness and out to the coils.

transistor box.

or possibly the coils are bad internally. cant change that because they are specialized 0.6 ohm micro units, rather than the more easily avalabe 1.5 to 2.0 ohm units

10 months until i can try again.

[billy rubin]

the guy in oz is an expatriate pommy who builds the units on the bench. hw has drawings for the rotor which a machinist has to make. multiple cuts and a taper on the lathe. that will be the expensive part

[billy rubin]

[billy rubin]

[billy rubin]

[billy rubin]

[billy rubin]

9115 is my triumph.

135.259 mph

but not this time. the boy has gone 108 on the little 250 ninja, but that is not nearly the crudely dramatic ride going 100 on something built 40 years before he was born.

[Icarus]

A couple exotic looking rigs in those pix Billy. Some puzzling things too.....The rear tire on the metallic orange bike #1459 and the excessive rake and trail built into that vee twin thing #1918. The rear coilover angle on #1918 is also excessive. Tell the owner of that thing that MotGP bikes can run 180 MPH and need no such excessive fork rake. 

The clean looking Beezer looks like a full stock bike. I like it.   The blue four wheeler #343 looks like a Midget circle track racer. He has those big ole Hoosier Asphalt track tires for a straightaway run that will sure as hell hold him back.

I'd for sure get my rocks off while being a spectator at an event such as that one. The variety of equipment and the inventiveness of the participants is most interesting.

I once had, on loan from the NSU factory, a 49 cc race bike that was good for 70+ MPH. I really liked that little thing. As I remember, it had a five speed gearbox and it would turn way into the 14,000s. Rotary valve two stroker with some very imaginative porting. Amazing for its day. Has anyone run a moped or other 49cc two wheeler? I could get enthused with a class such as that.

[Dark Lightning]

Moped? Funny story. One of my more adventurous gearhead friends had a Moped that he grafted a 260 CC Suzuki engine onto. Took it for a ride, cracked the throttle wide open, and it stuck. He was running along behind it, trying to get it to throttle down,
Lest anyone think that I'm perfect...I may have mentioned it upthread. My BiL's brother had a 350 Kawasaki triple and let me ride it. It was in a parking lot where we were repairing some trucks. I knew they were peaky, so I was in 1st gear, slowly opening the throttle. At some RPM it peaked, and stood up in a wheelie, with me hanging off the handlebars, with my belly on the seat. At that position, it was difficult to rotate my wrist to reduce throttle, but I managed, and was able to collect it and not hit the fence I had been heading for. Too cool! Once I figured that out, I was doing wheelies all over the parking lot, hugging that bike with my legs like a cowboy on a horse. 

[billy rubin]

A couple exotic looking rigs in those pix Billy. Some puzzling things too.....The rear tire on the metallic orange bike #1459

thats the 240 mph hayabusa. its a tire warmer on the back. the racing tires only get a few cool downs before they harden, so they use warmers all day.

and the excessive rake and trail built into that vee twin thing #1918. The rear coilover angle on #1918 is also excessive. Tell the owner of that thing that MotGP bikes can run 180 MPH and need no such excessive fork rake.

he normally gets 171. this time he only managed 160 something because of the headwind.

The clean looking Beezer looks like a full stock bike. I like it. 

thats my pit bike. 1969 stock thunderbot. everything is original except the tach and later silencers.

The blue four wheeler #343 looks like a Midget circle track racer. He has those big ole Hoosier Asphalt track tires for a straightaway run that will sure as hell hold him back.

thats exactly what it is. some old stuff around there.

I'd for sure get my rocks off while being a spectator at an event such as that one. The variety of equipment and the inventiveness of the participants is most interesting.

I once had, on loan from the NSU factory, a 49 cc race bike that was good for 70+ MPH. I really liked that little thing. As I remember, it had a five speed gearbox and it would turn way into the 14,000s. Rotary valve two stroker with some very imaginative porting. Amazing for its day. Has anyone run a moped or other 49cc two wheeler? I could get enthused with a class such as that.

the little stuff is the most interesting. at bonneville theres a 50 cc streaminer that does 149

there was a guy at my event a coiple of years ago who ran a little puch moped, with pedals. he was an academic physicist and did some creative porting and everything else totally stock. it went 64 mph and told me it was terrifying to ride.

[billy rubin]

i think ive posted colin furze before but hes always worth revisiting.

my safety people wouldnt stand for ^^^this, but one guy did mention that nobody has run nitrous oxide on a 250 ninja, and the record is open.

[Asmodean]

Ooh, I like the gallery above. Much eye candy.