Topic: MessnerMoto - CB750 f2 - Some Parts are now available from build!!

[MessnerMoto]

What air filters? There is enough space for K&N filters or something similar... but probably it will go with velocity stacks. I will get better picture next time. Shock reservoir goes in 50mm compared to frame tubing....

[Godffery]

Are you going to keep the rear shock turned with the reservoir facing forward? it looks like it will interfere with the Air filters with it like that?

It almost sounded like you said "air filters' just then.

:-)

 Well I would think he's not going to run Velocity stacks on the street?

[RAFster122s]

Godffrey, I have seen a few do that only to learn some filter sock isn't enough even if cleaned and ouuuiled. Then I have seen velocity stacks put in a airbox without knowing the basics about optimum design use with stacks requires a open unobstructed area beyond the stacks equal to the height to 1.5x the height as a minimum and the stacks lip design being critical to performance within that box. The inexpensive sheet metal stacks do not have sufficient material at the opening to be used inside filter box. I have studied the flow dynamics for stack design and configuration. They may look cool but they really aren't going to be used outside the track and stack length and throat design of tuhe stack is really an art that has to be researched and experimented with...an expensive proposition most don't have the $ to properly figure out.
Even on the track, they aren't always the smart solution if the track is in farm country. The amount of dust kicked up in the area will destroy a motor in a few long weekends if the dust is of typical density during planting and harvest time...or furrowing, bailing hay or other crops using any number of implements...
David

[scottly]

Reynolds 531 brazed together would be my choice, looks sexy too....

531 is a high manganese alloy, and is always brazed, rather than welded. A significant amount of the Seeley frame's weight is from the brazing. 531 has been superseded with 631, which can be tig welded, as well as being 10% stronger than 531. 

[calj737]

Reynolds 531 brazed together would be my choice, looks sexy too....

531 is a high manganese alloy, and is always brazed, rather than welded. A significant amount of the Seeley frame's weight is from the brazing. 531 has been superseded with 631, which can be tig welded, as well as being 10% stronger than 531.

I think he meant gas bronze welded, the way Titmarsch does his frames.

[scottly]

Reynolds 531 brazed together would be my choice, looks sexy too....

531 is a high manganese alloy, and is always brazed, rather than welded. A significant amount of the Seeley frame's weight is from the brazing. 531 has been superseded with 631, which can be tig welded, as well as being 10% stronger than 531.

I think he meant gas bronze welded, the way Titmarsch does his frames.

I meant gas bronze welded, the way Colin Seeley had his frames done.

[Retro Rocket]

Reynolds 531 brazed together would be my choice, looks sexy too....

531 is a high manganese alloy, and is always brazed, rather than welded. A significant amount of the Seeley frame's weight is from the brazing. 531 has been superseded with 631, which can be tig welded, as well as being 10% stronger than 531.

 Yes, 631 is probably better than 531 now, although he XR69 frame above is using T45 steel tubing,  similar to 531 as its a high carbon manganese alloy as well, it seems to be the popular choice of tube style frame makers at present.  I think Reynolds no longer make 531..    Gas bronze or in the case of the XR69 frame, nickel bronze welded..

[MessnerMoto]

Godffrey, I have seen a few do that only to learn some filter sock isn't enough even if cleaned and ouuuiled. Then I have seen velocity stacks put in a airbox without knowing the basics about optimum design use with stacks requires a open unobstructed area beyond the stacks equal to the height to 1.5x the height as a minimum and the stacks lip design being critical to performance within that box. The inexpensive sheet metal stacks do not have sufficient material at the opening to be used inside filter box. I have studied the flow dynamics for stack design and configuration. They may look cool but they really aren't going to be used outside the track and stack length and throat design of tuhe stack is really an art that has to be researched and experimented with...an expensive proposition most don't have the $ to properly figure out.
Even on the track, they aren't always the smart solution if the track is in farm country. The amount of dust kicked up in the area will destroy a motor in a few long weekends if the dust is of typical density during planting and harvest time...or furrowing, bailing hay or other crops using any number of implements...
David

Yes, yes you are right but velocty stacks look so nice . I will end up with K&N filters.

[Godffery]

Yes, yes you are right but velocty stacks look so nice . I will end up with K&N filters.
[/quote]

 + 1 on the K&N, it's the only brand I use and I would Never use velocity stacks, even on the track.

To get back to the original question regarding the Clearance:
Are you going to keep the rear shock turned with the reservoir facing forward? it looks like it will interfere with the Air filters with it like that?

[MessnerMoto]

Like I sad the picture is misguding. Lower mounting point on swingarm is not finished so shock is at the wrong angle and when in right position shock reservoir is going 50mm inside of space for air filters.

[Godffery]

 Woop, sorry, I didn't see that part.   

[MessnerMoto]

I mean I am hoping there will be no interference with filters. I tried guess how much space I will need for filters...

[Godffery]

 Well I know the good K&N filters come pretty close to the frame :
http://www.vinmoto.org/gallery/v/VinMoto-Garage/album03/Godfferys-Garage-123/Thomass+Cafe+project/TTCB+021.JPG.html
http://www.vinmoto.org/gallery/v/VinMoto-Garage/album03/Godfferys-Garage-123/Thomass+Cafe+project/TTCB+035.JPG.html?g2_imageViewsIndex=1
Worst case scenario, perhaps you could just turn the shock around?

[MessnerMoto]

This are the pictures of cb650? There is more space on cb750 for filters

[Godffery]

 Oh right, That's a 550, your working on a 750.  D'oh...!

[MessnerMoto]

Back from polishing

[calj737]

You missed a spot. Theres a grimy fingerprint in that middle picture... 

[MessnerMoto]

I will wipe it

[Trad]

Really elegant looking.

[Godffery]

 Those turned out absolutely stunning...!  8O

[754]

Nice should build some levers to sell .
A
Re the bars angling up or down on the bike ?

[MessnerMoto]

Really elegant looking.

Those turned out absolutely stunning...!  8O

Thanks

Nice should build some levers to sell .
A
Re the bars angling up or down on the bike ?

I will have to do it because this project is starting to have big impact on my pocket. And if I plan to finish it I will need more money... Also there is a lot if Interest in my parts...

[MessnerMoto]

Re the bars angling up or down on the bike ?

Yes bars are angled up... But when you combine that angle with angle of forks they level to be straight... compered to ground.

[SOHC4 Cafe Racer Fan]

Very nice design.

[MessnerMoto]

I have finally put the bike on its legs