Australian Streamliner Bike Build

[grumm441]

I dont need to make car noises anymore, i downloaded an app on my phone that makes them for me. now i just press play and swing my hands around in front of me all crazy like. kind of like you when your driving.
 

I thought that was you in the traffic
G

[Jon]

Replacing Tape with Tube and adding more Tape:

The bars up the back that meet 1/2 way along a fore/aft tube are the seat back support.

Changing a couple of bars in the helmet area, they came too close together at the front and by the time I put rollbar padding on them they push my head down a long way.
The back will stay in the same point to intersect with the cross above the engine compartment, the front will move down pushing therm further apart, two extra bars will then go from the front down to the where the main hoop and midrail intersect.

Looking at the floor of the riders compartment:

My butt goes pretty much on top of the cross in the middle of the picture, wheeltub is on the right.

Wheeltub:


The two running up the back of the wheeltub will support the top suspension rocker and the handlebar mount.

[DavieB]

Safety boots??

[Jon]

Safety boots??

Young people these days.....

How many times do I have to tell you, don't weld wearing Double Pluggas, the sparks go down between your toe and the strap and you'll get a nasty burn.

jon

[DavieB]

Safety boots??

Young people these days.....

How many times do I have to tell you, don't weld wearing Double Pluggas, the sparks go down between your toe and the strap and you'll get a nasty burn.

jon

Asbestos footsies.

[Jon]

After a bit of rule clarification please:

I plan on having an ice water tank under my seat back.

Rules 7.H.6 and 7.H.17 both seem ok with it, I see a fair few cars with eskys in the drivers compartment, just want to check.

Thanks
jon

[Jon]

Mike Akattif's post about the fire system got me thinking.

I'm running a Coldfire system, they make 3 different size bottles.
5lb which is 150 cubic inch and 2 different 10lb bottles, 1 is 300 cubic inch and the other 350 cubic inch.
I bought the 350 cubic inch bottles, this has turned out to be a stroke dumb luck.

The 5lb and smaller 10lb bottles have 30 cubic inches of capacity per lb.

If I get 11lb put in the 350 cubic inch bottle it has 31.8 cubic inches per lb of agent so still has more nitrogen per lb of agent than either of the other bottles.

An email to the local supplier resulted in a "no worries we can do that and tag it accordingly".

One of the ice water tanks just got bigger .

Cheers
Jon

[Jon]

2degree yaw study numbers from Woody.

Surface pressure plots:


X,Y&Z forces:

The resulting Yaw, Pitch and Roll:


Looks like most of the yaw input is coming from the nose of the bike rather than the tail which is fairly neutral.

Hmmmmm
jon

[wobblywalrus]

It seems that you will need to look at a few different types of noses to figure out if the one you are looking at is optimal.

[Jon]

Cut the top tubes out of the cage today and fitted new ones and diagonals.
I've decided to cut the cap plate into sections so that I can get decent welds on each tube to get maximum stiffness, will do all the riders compartment the same way, some inside and some outside.



Cheers
jon

[Jon]

After procrastinating over Woody's CFD analysis I've eventually relented and he's doing a run with an extended tail, most of you will think it a little weird looking but it's has some logic,

Will post some pics when Woody has it drawn.
Not that happy to extend the tail but that is what I got Woody to do the work for.

Decided not to try and make Lake Gairdner this February, I sat on ordering the CNC work for the body plug while the rollcage rule debate was happening (was on for a bit before it surfaced on the forum), now I'm into the silly season with no body or canopy plug.
I'll be at the lake to do some volunteering and learn some which can only be good.

cheers
Jon

[Glen]

Jon looking good my friend. If you look back into Sam and Ack's, changes with added tail streamlining they both had some issues with the extensions. Wouldn't hurt to ask them. Keep up the good work.

[wobblywalrus]

The BUB liner has a long tail.  Somehow they got it to work. 

[Jon]

Thanks guys.
A day of welding, doesn't look a lot different than yesterday other than a lot of tacked tubes are now welded.
Top cap is on, first pair of internal panels are in:


Ran out of gas about 15 minutes after the shops shut 

Oh well, all tommorow untouched yet, sheet the seat back and firewall is the plan.
jon

[Dr Goggles]

I was gonna say get some cheap bathroom scales, stick 'em under the bottle occasionally, do you use disposables?

we saw stuff didn't we Jon, yes, that no-one else saw