Worlds fastest Indian,

Rohan said:
hobot said:
after their big bored Vincent land speeder side car dyno'd like 180 hp? .
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Thats the Irving Vincent, 1600cc, a month or 2 back?
50 or 60 years ago, that would have been a seriously fast streamliner.

But why didn't someone with a Vincent try it 50 or 60 years ago...

P.S. Shoulda searched before writing, of course someone has tried it.
But recently.
Record being chased is 350+ mph...
Did someone mention 3000 cc ??

http://www.vincentstreamliner.com/BlackLightning/images/Liner.jpg
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Also you cannot forget the late George Brown's attems with his 1000 Vincent; he enen hit 190 mph at one point but iI don't think it was a 2 way run.......

He had hoped to go for a 200 mph average over the flying quarter mile, but conditions were too difficult even for a man of George's ability and courage. His best flying quarter was at 190.315. However, with a sidecar hitched up Super Nero went to a new World and National Record for the flying mile in a mean of 28.074 seconds, or 128.234 mph. George was 58 years old - how's that for dedication?

http://myvincent.co.uk/people/george_brown.php
 
Nero and SuperNero were supercharged though. Easy (easier ?) with a whole lot more power on tap.
Although back then, that was really exploring the boundaries, not like today.
 
Burts 1953 pic of the Munro Special (page 1 here) shows it already has drop centre rims front and back.
And speeds were well shy of 200 mph back then. A long way shy, in fact....

Although stories of him shaving the tread off tires persist, quite some years after this.
Less chance of peeling a tread off a tire if there is almost no tread to centrifuge off... ?
 
from the land of persnickity " Nero and SuperNero were supercharged though. "

Aint No Supercharger ; nevetheless , 10.5 @ 140 mph .

Worlds fastest Indian,


Further indulgance

Worlds fastest Indian,


When he added the SUPERcharger to Nero , he added the SUPER to Nero , Hence Supercharged Supernero . :)
 
GRM 450 said:
One Good Run by Tim Hanna would be a must read for you hobot, and anyone else who hasn't read it.
Hacksawing Triumph cranks in half to get 270 degrees then welding it up, finding no more power so he put it under the bench.
Carving rods from truck axles.
Making his own wind dyno.
Scrounging material from where ever he could.
etc
etc

I can't imagine where he would have gone if he had money for machinery and materials.

graeme
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Re; Making his own wind dyno.

Do you mean wind tunnel :?:

If so, was it for scale models, or for full size :?:
If the latter, anyone out there got pics :?:
 
Shaving tires for speed is mainly to lower internal friction heating more than lowering mass of the rubber so thinner tire has less heat to cause the tread to leave the casing. This is something I have to consider with Ms Peel 'who' can't fit Z rated 17" tires yet. I'd sure like to feel a few minutes on a bike that is better than a life time on ordinary ones sanely used. Hehe wouldn't we all though.
 
Wind dyno.
It's been a while since I read the book.
The book says he made a dyno that had big air paddles and as the engine became more powerful he had to use bigger paddles that were quite dangerous
 
[video]http://www.youtube.com/watch?feature=player_embedded&v=iH8PXKSZplc[/video]


[video]http://www.youtube.com/watch?v=UyYew6wcHQE[/video]

[video]http://www.youtube.com/watch?v=dtG9gWMIYAo[/video]
 
hobot said:
Shaving tires for speed is mainly to lower internal friction heating more than lowering mass of the rubber so thinner tire has less heat to cause the tread to leave the casing. This is something I have to consider with Ms Peel 'who' can't fit Z rated 17" tires yet. I'd sure like to feel a few minutes on a bike that is better than a life time on ordinary ones sanely used. Hehe wouldn't we all though.
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Or perhaps Burt Monroe did it to solve another problem that occurs at high speed.
Tyre disintegration. He might have used motocross tyres which were 6 ply rating which would stay together at high speed better than the 4 ply rating.
I wonder if he went the whole hog and filled the tyres with the more stable Nitrogen Gas rather than the unstable air :?:
 
I only know that the heavier built the tire by rubber thickness and cord plys the higher its load rating but the lower its speed rating. Peel may have to use shaved tires for a speed test as 150 is highest tire rating I can find in 18" or 19" tires. Tires also expand as they near their speed ratting so clearance must be provided. First speed test would be those standing mile runs then try to stop before runway run off runs out. Its takes a strange state of turning fear into pleasure to go as fast as ya can, at least it does for me.
 
I sure ain't no Burt Munroe but boy howdy I get flash back tingles on being careful on take offs d/t too easy fish tailing antics. There's few things more pleasing than surprising others with a surprise view of tail light dimming in the distance. I also loved the part where they qualify Burt with cars surrounding him and finally snicks 2nd and gives some gas - after the warm up in 1st to the ton. Btw the driver crashed on purpose at beach turn around byt cutting power @ mid rear swing out so it hooked up a hi side into soft sand not Gravel. My P!! looked too small and too crude so extra joy to piss off the triples of the era, Triumphs and H2's. The only one's who took being blown off well were the 1%'s on Harleys who then befriended me like the movie plot. That was not a crowd I wanted to hand around with so learned to avoid them. Having a real hot rod that's way ahead of the rest makes for a solo hobby of thrills.
 
GRM 450 said:
One Good Run by Tim Hanna would be a must read for you hobot, and anyone else who hasn't read it.
Hacksawing Triumph cranks in half to get 270 degrees then welding it up, finding no more power so he put it under the bench.
Carving rods from truck axles.
Making his own wind dyno.
Scrounging material from where ever he could.
etc
etc

I can't imagine where he would have gone if he had money for machinery and materials.

graeme
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+1, enjoyed the movie but understand that it had to be edited to appeal to a general audience. Bought the book and enjoyed it greatly, there was so much more than Bonneville in Burt Munros life, have also loaned it to a few beernight gearhead friends and all loved it and finished it too.
 
Thanks for the V twin photo journey Matt and graeme for the One Good Run book lead. Even though I'm no Burt Munro I did have the fastest thing around by a good lead with the P!! dragstrer, so got some insights on Burt's various states of good run vs bad ones. From one of the leads Matt URL lead to.

From: Ben Bolt

An interesting additional story regarding Burt was told to me by the New Zealand friend who introduced me to Burt on the morning after our get-together as we were going back home. He said that a few years previously, on some high speed run Burt had lost it, went down and went sliding and spinning along the sand until he finally came to rest. Since he was inside of the fairing and it all held together he was not injured. A few days later he was complaining of not feeling well so my friend took him to the doctor. The doctor checked him over and could find nothing wrong but he told my friend that the symptoms Burt was complaining about were typical of someone who had had a very frightening experience. I can't imagine what those symptoms might have been and my friend didn't know what they were but it would be a good question to put to some doctor sometime. I am at a ski lodge in Utah right now and there are often doctors at the dinner table: I will look for a chance to find out more about this.Ben
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Also known as Shell Shock, Combat Fatigue and now Post Traumatic Stress Syndrome. Adrenal gland exhaustion and sympathetic autonomic nervous system shock over load. Tired but can't sleep, can think clear brain fog yet can't get the horrific images/sensation out of mind, gut and appetite upset, depression anger waves, similar sounds, places, smells, temperature etc will elicit new wave of above to point of body jerks or involuntary moans or yelps...

I've left out the worse of my major carsh and animal strike recoveries sufferings but each takes me about 3 yrs to get over the majority of it but some sense remains 24/7, re-stimulated by time of year, smells, sounds, temperature, type of activity, etc.

I've read enough of what Burt suffered but if ya want more scope on it scan thruough these,,.,
https://www.google.com/#q=burt+munro+injuries
 
Why ?

Burt built it hisself, so that level of complexity was way beyond what was needed.
1000cc ohv gave the needed herbs.
Much of his speed was from the ultra low frontal area.
And some (lucky ?) aero that gave him low drag at the rear, AND some stability...
 
And some (lucky ?) aero that gave him low drag at the rear, AND some stability...
Click to expand...

T'weren't any luck involved Burt's body work as had professor level aerodynamic help and testing so got everything including the gap under the windscreen pretty darn right. I don't think rules allow a laid out full prone position anymore and require a decent view straight ahead instead of looking at the sides or down at the line, which they don't lay down no more d/t environmental reasons.

I'm looking for the aerodynamics study that went into Burt's but so far only founds this interesting section of a book
http://books.google.com/books?id=jxWweo ... ics&f=true

Oh ok here some aero history, see if ya can stop reading...
http://www.gyronautx1.com/1/category/all/2.html
 
I have read the books ( and even own them !).
Including the 1962 (?) magazine that gave him a widespread audience.
And an appreciation of how backyard an effort this was...

Aero is still rather primitive, by modern standards ?
There is essentially nothing to prevent the bike lifting, like afflicted a number of similar efforts.
???
 
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