B50 MX for Bonneville

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B50 MX for Bonneville

Post by Andy Chaos » Sun Aug 09, 2015 5:24 pm

I have just bought a matching numbers road legal B50MX to use as a test bed for our Bonneville engine.
After the record attempt the plan is then to use the rolling chassis with the Bonneville motor to create a short stroke B50MX to race.
Its fresh in from the States but has this strange inlet manifold to Mikuni carb which is then plumbed to what looks like a boost bottle on the swing arm. Has anyone seen anything like this before Also WTF is this finned alloy and brass bit bolted to the frame tube (arrowed).Its very well made but seems to have no purpose. any ideas before it goes in the scrap bin.
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Last edited by Andy Chaos on Sat Jan 23, 2016 7:01 pm, edited 1 time in total.

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Re: B50 MX

Post by beat » Sun Aug 09, 2015 7:29 pm

strange, - very strange..... this US boys. <201 <201

could it be a place to add some gases like " Lachgas " in german , to get more HP out of the engine for a surtain time?

actualy the piping should tell what it is made for....

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Re: B50 MX

Post by Grayham » Sun Aug 09, 2015 8:45 pm

Looks like a Nitrous Oxide kit to me, not that I really know what a nitrous oxide kit actually looks like.
Is there a button on the handlebars wired in to it?
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Re: B50 MX

Post by Malcolms Lad » Sun Aug 09, 2015 9:39 pm

That mean theres a B50 lump sitting around?
How to rupture yourself in one easy lesson!

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Re: B50 MX

Post by Andy Chaos » Sun Aug 09, 2015 11:43 pm

Its not a NOS kit as the pipe is just normal fuel pipe also there are no electrical connections / solenoids etc.
I have removed the brass bits from the finned square piece and there are no holes just a solid block of finned alloy.
All I can think it was used for is to blank off the 2 pipes to the boost bottle but its a bit elaborate when a couple of old bolts and jubilee clips would do the same.
Saying that the previous owner must have just bought himself a new milling machine as I have never seen so much work gone into an inlet manifold before. :shock:
Yes it does mean there is a spare B50 lump floating around but its not for sale sorry.
The bloke I bought it off has an ex crass track B50 motor for sale at £1500. It was shipped at the same time as the B50 but the problem is its gone missing at the moment but he is praying it will turn up from customs.
I am happy to pass on his number if anyone is interested.

Andy

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Re: B50 MX

Post by Andy Chaos » Mon Aug 10, 2015 6:10 pm

God only knows what you Yanks get up to.
The inlet manifold is milled from a solid block of alloy built to take a reed valve and a 28mm Mikuni.
The 2 pipe outlets were connected to the boost bottle :werd
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Re: B50 MX

Post by beat » Mon Aug 10, 2015 9:09 pm

<201 <201
Hmmmmm, - a masterpice of nonsensing work.
so,

A pice of ART in this case it seams :?: :?: :?:
:shock:

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Re: B50 MX

Post by skippy » Mon Aug 10, 2015 11:23 pm

Andy Chaos wrote: built to take a reed valve
He must have had so much overlap on his valve timing he needed the reed valve to make it run at low revs Or he was going to convert it to a 2 stroke and the can was the oil injection kit. <201 :uhu :mrgreen: :lol:
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Re: B50 MX

Post by Andy Chaos » Mon Aug 10, 2015 11:29 pm

I thought the same about the overlap but then would you fit only a 28mm carb :?: :?:
He could have been after loads of bottom end power :werd

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Re: B50 MX

Post by madsundaysurvivor » Tue Aug 11, 2015 12:18 pm

I'm not sure but the gadget seems a valve or altimetric capsule, I do not say it in your language.
It was used to compensate the carburetor when on the same day, the slopes could be in 1000, 2000 meters or more

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Re: B50 MX

Post by packw » Tue Aug 11, 2015 10:25 pm

I think it reverses the polarity of the neutron flow.
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Re: B50 MX

Post by Andy Chaos » Tue Aug 11, 2015 10:41 pm

Will that make it Positive earth :razz:

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Re: B50 MX

Post by WeirdTim » Wed Aug 12, 2015 2:02 am

It wasn't this guy selling it was it?

http://b50.org/phpBB2/viewtopic.php?f=5&t=6604

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Re: B50 MX

Post by minetymenace » Wed Aug 12, 2015 10:23 am

WeirdTim, it should be easy to confirm as the enginer number is visible in his post!

Andy, just thought I'd point out that reversing the polarity of the neutron flow will have no effect on the polarity of the battery (neutrons have no charge), however it will change the resonant frequency of the time dilation filter due to deposition effect on the plates of the flux capacitor, making the exhaust assume a distinctly bovine aroma caused by the build-up of waste material in this topic.
There is no evidence to support the notion that life is serious.
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Re: B50 MX

Post by Andy Chaos » Wed Aug 12, 2015 11:50 am

MM I can only agree cos I don't know WTF your on about :lol:
Makes no difference now as the whole lot is in the scrap bin and the engine is now sat in the Bonneville bike so I can start to set up the gear change and chain line etc. Of course all this was after it went and passed an MOT yesterday ;-) so I can now start to sort the Nova / registration paperwork.
Once the bits come back from Mark for the short stroke motor it can have its engine back, it will then become the test bed for the quick motor which should be fun on the motorway in the early hours.
No Tim its not the same unfortunately.

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Re: B50 MX

Post by roadplough » Wed Aug 12, 2015 3:34 pm

...The device could be a water injector to increase compression ratio.

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Re: B50 MX

Post by WeirdTim » Wed Aug 12, 2015 7:01 pm

minetymenace wrote:WeirdTim, it should be easy to confirm as the enginer number is visible in his post!

Andy, just thought I'd point out that reversing the polarity of the neutron flow will have no effect on the polarity of the battery (neutrons have no charge), however it will change the resonant frequency of the time dilation filter due to deposition effect on the plates of the flux capacitor, making the exhaust assume a distinctly bovine aroma caused by the build-up of waste material in this topic.
Understand that but that guy was sent over here by me. He posted something on one of the British Facebook pages I follow and I suggested he come here. He had stated that there was more than just the engine the lady had so I wasn't sure if maybe that complete bike came from her thru him or not. Given the history of her husband, something odd looking to us could have came from the same source.

Now you know.

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Re: B50 MX

Post by minetymenace » Wed Aug 12, 2015 8:20 pm

Its origin and purpose is still a mystery, maybe the bits will turn up in a future auto-jumble and someone will buy them because it looks interesting (who hasn’t done that?), it would be nice to know where all the pipes went…are they oil, fuel, water…where do they connect?
I like the water injection idea, and the extreme hill climb mixture adjustment, I hope all the extra effort was worth it.
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Re: B50 MX

Post by packw » Wed Aug 12, 2015 11:42 pm

If you examine the pictures carefully, you will see the marks left by an electron screwdriver, a sure sign that someone has tried to access the neutron flow.
Obvious really.
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Re: B50 MX

Post by Andy Chaos » Thu Aug 13, 2015 7:30 pm

I suppose i should change the title as its not a B50 MX at the moment.
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Last edited by Andy Chaos on Sun Jan 24, 2016 4:26 pm, edited 2 times in total.

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Re: B50 MX

Post by Keith » Thu Aug 13, 2015 8:45 pm

Are you piloting it Andy? (at Bonneville)

Keith.

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Re: B50 MX

Post by Andy Chaos » Thu Aug 13, 2015 8:49 pm

Both myself and brother John

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Re: B50 MX for Bonneville

Post by Andy Chaos » Sat Jan 23, 2016 7:07 pm

I had to get the Bonneville bike out today to measure up for the size of shipping crate required. We are planning to take 2 bikes out in the same crate its a squeeze but it should fit.
The yellow paint on the headstock is for customs, we have to highlight the numbers.
All the wires hanging down are from the Alfarno (go kart) Data Logger, we can read and recall exhaust gas temp, engine temp, rpm and speed all for £60 :thumb
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Re: B50 MX for Bonneville

Post by HPbyStan » Sat Jan 23, 2016 9:11 pm

Nice work on the Bonny bike. Re the inlet manifold, every country has its nuts and you may have found one of ours. That being said I've lernt not to judge a book by its cover as stuff I thought could not possibly work,,,, has.

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Re: B50 MX for Bonneville

Post by Andy Chaos » Sat Jan 23, 2016 10:24 pm

HPbyStan wrote:Nice work on the Bonny bike. Re the inlet manifold, every country has its nuts and you may have found one of ours. That being said I've lernt not to judge a book by its cover as stuff I thought could not possibly work,,,, has.
I have kept it all Stan ,you never know one day I might see the light :werd
As for every country has its nuts ,some of us still race using beans. ;-)

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Re: B50 MX for Bonneville

Post by koncretekid » Sun Jan 24, 2016 12:06 am

Andy,
Hopefully you are following the Salt Flats discussion seen here: http://www.landracing.com/forum/index.p ... 015.0.html
You might need to bring floats. There are also the Loring Timing Association runs at Loring, Maine, ECTA at Wilmington, Ohio, and El Mirage in California run by SCTA. But not the same as the Salt Flats at Bonneville.
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Re: B50 MX for Bonneville

Post by HPbyStan » Sun Jan 24, 2016 1:14 am

Andy Chaos wrote:
HPbyStan wrote:Nice work on the Bonny bike. Re the inlet manifold, every country has its nuts and you may have found one of ours. That being said I've lernt not to judge a book by its cover as stuff I thought could not possibly work,,,, has.
I have kept it all Stan ,you never know one day I might see the light :werd
As for every country has its nuts ,some of us still race using beans. ;-)
Not beans Andy, please say it isn't so.

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Re: B50 MX for Bonneville

Post by Andy Chaos » Tue Jan 26, 2016 4:27 pm

HPStan wrote:Not beans Andy, please say it isn't so.
Yes Stan it is so. Will you still talk to me ?

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Re: B50 MX for Bonneville

Post by Andy Chaos » Tue Jan 26, 2016 4:29 pm

koncretekid wrote:Andy,
Hopefully you are following the Salt Flats discussion seen here: http://www.landracing.com/forum/index.p ... 015.0.html
You might need to bring floats. There are also the Loring Timing Association runs at Loring, Maine, ECTA at Wilmington, Ohio, and El Mirage in California run by SCTA. But not the same as the Salt Flats at Bonneville.
Tom
Sorry for not replying earlier Tom but it took that long to read,is there a deadline when a final decision will be made.
Andy

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Re: B50 MX for Bonneville

Post by HPbyStan » Tue Jan 26, 2016 7:32 pm

Andy Chaos wrote:
HPStan wrote:Not beans Andy, please say it isn't so.
Yes Stan it is so. Will you still talk to me ?
Seems such a long way to travel to have your effort handicapt right from the start.

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Re: B50 MX for Bonneville

Post by koncretekid » Thu Jan 28, 2016 12:02 am

Andy Chaos wrote:
koncretekid wrote:Andy,
Hopefully you are following the Salt Flats discussion seen here: http://www.landracing.com/forum/index.p ... 015.0.html
You might need to bring floats. There are also the Loring Timing Association runs at Loring, Maine, ECTA at Wilmington, Ohio, and El Mirage in California run by SCTA. But not the same as the Salt Flats at Bonneville.
Tom
Sorry for not replying earlier Tom but it took that long to read,is there a deadline when a final decision will be made.
Andy
Nobody's saying and I don't think anybody knows. If I hear anything, I'll post it here.
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Re: B50 MX for Bonneville

Post by Andy Chaos » Thu Jan 28, 2016 8:30 am

Cheers Tom

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Re: B50 MX for Bonneville

Post by hwan » Thu Jan 28, 2016 11:46 am

started reading the 'threat to Bonneville' forum thread and lost the will to live after the first 30 pages ................

So in short, not only could there be weather problems and salt condition problems, but also legal/enviroment problems presented by mining industries ??????

As Andy says, please keep us posted.

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Re: B50 MX for Bonneville

Post by koncretekid » Sat Jan 30, 2016 10:56 pm

Here are a few more references regarding the deterioration of the Bonneville Salt Flats and what is being done:
http://le.utah.gov/~2016/bills/static/HCR008.html
http://www.landracing.com/forum/index.p ... 382.0.html

The second one describes the action of the Utah Alliance, a group organized to push the government to take action, and the first one actually describes a State of Utah resolution to prompt action by the Bureau of Land Management (which allowed this degradation to take place over 100 years) and the U.S. Government. It may be too little, too late, for us current users, but hopefully, the healing will begin and with a little luck, we may see racing again on the Salt Flats.

Tom
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Re: B50 MX for Bonneville

Post by Andy Chaos » Sat Feb 13, 2016 1:37 pm

All finished and ready for a test tonight at my mates industrial unit. This is the engine that was advertised as a B50 race bike on this forum the, the main motor is still under construction. I had to shorten the inlet to squeeze in the 36mm Amal smoothbore, it is tight but I can easily rotate the carb on the stub to change jets.
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Re: B50 MX for Bonneville

Post by beat » Sat Feb 13, 2016 8:45 pm

hi chaos,

what type of A/F reading is it and what value are you after ?

beat

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Re: B50 MX for Bonneville

Post by Andy Chaos » Sat Feb 13, 2016 8:54 pm

Hi Beat
Its this one.

INNOVATE MTX-L AFR Wideband Air/Fuel Ratio Gauge

Looking for around a reading of 13.
Andy

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Re: B50 MX for Bonneville

Post by beat » Sat Feb 13, 2016 9:28 pm

it sounds good. :cool:

what length of cable at the sensor was fitting your bike ? 0.9 m ore 2.4m :?:

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Re: B50 MX for Bonneville

Post by Andy Chaos » Sat Feb 13, 2016 9:34 pm

2.4 meter there is a coil hidden under the Interspan.

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Re: B50 MX for Bonneville

Post by beat » Sat Feb 13, 2016 9:37 pm

thanks,

how long is about the cable for the sensor coming from the gauge ?

beat

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