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April 26, 2015, 07:34:29 PM

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Author Topic: Ace assisting Bullet Whisperer racing effort  (Read 14878 times)

AVL Power!

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Re: Ace assisting Bullet Whisperer racing effort
« Reply #330 on: April 20, 2015, 07:14:37 AM »
Finally some on-board video! Awesome stuff Paul!

Ice

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Re: Ace assisting Bullet Whisperer racing effort
« Reply #331 on: April 20, 2015, 11:21:40 AM »
WOW i want one  :)

Are you for certain ?  ;)


  Be forewarned that the only thing more addicting than addiction is motor racing. ;D 8)
I can break it better,,,,at night, in the rain, on the trail,, 20 miles from nowhere.

REA #136

"TIMEX", the '06 Iron Barrel Military that takes me everywhere I want to go... and some places I shouldn't.

High On Octane

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Re: Ace assisting Bullet Whisperer racing effort
« Reply #332 on: April 20, 2015, 01:22:34 PM »
Great stuff B.W.!  Can't wait to see it go after the tuning is sorted.  What a beast!
Scottie J  ~  Bulldog Kustoms Denver  ~  1958 Enfield/Indian Trailblazer - The Blackhawk

Bullet Whisperer

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Re: Ace assisting Bullet Whisperer racing effort
« Reply #333 on: April 22, 2015, 08:00:05 PM »
Yesterday, we took the 500 and a misbehaving Ducati 250 to a top secret location, for some tweaking and fine tuning.
 Notch by notch, I lowered the needle on the 500's carb from the richest to the leanest notch, testing the changes each time - there is also a spacer under the needle clip which I put in years ago, this can probably go now - an improvement was noted with each change of setting, however, a little lumpiness was still evident on the first bit of throttle when opening up out of corners.
 I checked the slide cutaway - it was a No3. I looked in my tin of carb spares and found a No3 1/2, so I fitted that, with the needle as on the last run.
 Similar work was done on the Ducati and the upshot was I was able to go into and round numerous corners in one gear higher on both machines by the time I had finished.
 The irony with the 500 is although I have ridden it [but not raced it] on both track and dyno, it wasn't until I saw Ian's on board videos that I realised what was troubling him and as a result, once a 'best' carburettor setting for maximum power and good starting had been settled upon some years back, it has never been altered. Until now ...
https://www.youtube.com/watch?v=dPQihZjiNhc
 B.W.

ace.cafe

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Re: Ace assisting Bullet Whisperer racing effort
« Reply #334 on: April 22, 2015, 08:31:37 PM »
Sounds like it is responding to treatment!

Very powerful sound, and a lovely bit of countryside too!

Thanks!
 8)

AVL Power!

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Re: Ace assisting Bullet Whisperer racing effort
« Reply #335 on: April 22, 2015, 08:55:16 PM »
That torque! I like how it takes off around 0:53 secs in that video.



ace.cafe

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Re: Ace assisting Bullet Whisperer racing effort
« Reply #336 on: April 22, 2015, 09:34:55 PM »
All of our heads have always liked it on the leaner side.
I realize that with methanol fuel, it's very risky to get too lean.
But, I think you see what I mean. Our heads atomize the fuel very well, and generally don't need to be as rich as many other heads need.
The advantage of this is that since methanol requires a very heavy fuel laden A/F ratio, running less fuel leaves more room in the port for air, and this makes more power. The more room the methanol occupies in the port, the less air can fit in.

Also, it can have slightly better fuel economy, which I am not sure makes any difference in the current racing series, but might make a difference in the future.
« Last Edit: April 22, 2015, 09:59:19 PM by ace.cafe »

High On Octane

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Re: Ace assisting Bullet Whisperer racing effort
« Reply #337 on: April 22, 2015, 09:58:03 PM »
Very nice stuff!  Cool video too!
Scottie J  ~  Bulldog Kustoms Denver  ~  1958 Enfield/Indian Trailblazer - The Blackhawk

ace.cafe

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Re: Ace assisting Bullet Whisperer racing effort
« Reply #338 on: April 25, 2015, 07:06:54 PM »
Next race is May 16-17.
 ;D