750 Hawk/Bros

[jensen]

I am new member from Denmark (you know back in old europe)
I have a Bros (the name of the bike when it is sold in Japan) This winther I have put a 742cc engine from a Honda Africa Twin into the bike. It gives more grunt but not much, but it gives more opertunityes for tuning. I have 2 82mm Wiseco pistons that has to come in. (next winther. They are long ond dark here(;o)
It will give it 760cc and higher comp apx 10:1. I have intstalled some german camsharfts (reprofiled original ones) that lift the valves + 1mm. In a Hawk you can also use original Africa Twin cams. They work well to. I have used the lower frontfork, wheels and brakes from a Honda VFR400R. That gives double discs 300mm in front and 4 piston calibers (that brakes) The rearwheel from the VFR is lighter but 18" so that is more for the look. A VFR 750, 5 spoke 17" wheel would be better. It also have a moto-x handlebar. It fits me better.
Only one problem. The weather is mostly to bad over here

[yellafella]

Welcome to the forum!

Wow, seems like you have definitely massaged your bike. I'm still hesitant to touch then engine because the weather is beautiful over here and one day without riding feels like forever.

Right now, I'm working on some basic modifications and I hope to be riding by Sunday....I hope. You have to post some pics of that African Twin. We in the states have a very difficult time getting our hands on that engine.

Happy tuning!

-Nguyen

[Soul]

Sounds like a bad ass ride! pictures! we want pictures.

[brewsy]

Hi Jensen.
Glad to hear youve made the VFR400 forks work.
I purchased a set to fit onto my Hawk but got scared as they are a couple of inches shorter than the standard units.
Do you have any problem with clearance between the wheel and the radiator when the forks are fully compressed?
If youve had good experiences then I may offer them to somebody on the Forum as I now have a set of CBR600F3 forks Im rebuilding.

Marc

[jensen]

The VFR 400 forks; you can use the fork stansions from the hawk and the lower parts from the VFR. It all fits together beautefully. So keep it, much better then the CBR brakes. It will get a little lower front if you use the short dampertubes from the vfr, but that will only help cornering. No problem.
I will se if I can find out how to put pictures on this forum?
Another ting is that I cant get UNI pod filters overhere and it seems that they work well.? Can anybody help?

[Doc]

I have some pod filters, what size do you need?

[jensen]

Hi Doc. I think it must be around 2" 1/4" +. 56-58mm. Because it has to fit outside a strange PVC casting that is fitted to those Africa Twin carbs.

https://www.picturetrail.com/jensen44

is where you can se the bike/s. The blue one will get the wheels from the red one and a front wheel from a Suzuki with Kawa discs 320 are made. This way I have 2 sets of wheels with the posibility of using 120/17 on the front all the time.

[jensen]

new picture update on the above address.

[dagus]

Jensen, that Hedlund is gorgeous!

[jensen]

thanks. Has for the last 8 months been on exhibition in 2 Swedish tecnical museums, because it is a Swedish engine.

[jensen]

last update on the project can be seen on

http://www.picturetrail.com/jensen44

[motorcycleman]

Hi jenson! Nice and informative set of pictures. Love the shot of you and your brother from 66!

[brewsy]

Jensen,
what exactly are you achieving with the re profiling of the heads?
Did you relocate the valves or simply add material to change the shape of the squish area?

Thanks,
Marc

[jensen]

1966 that was some years
The update on the heads is to gain the tecnologi that is on all other newer bikes. Better burnng of the gasses and that means more of everything. I also hope on better fuel economy.

[brewsy]

Cool.
Let us know how it goes and if you achieved your goals!!