/2 reverse conversion. Driveshaft fun

[Izzypwc]

Hey guys. Here's one for you whizz kids. I'm doing a reverse conversion project:

- /5 frame
- /5 SWB swingarm (I think here lies the problem):ear
- /6 final drive
- R50 engine
- /2 gearbox

There is a lot of information on this site about people putting /5 engines in /2 frames but hardly any info on these reverse conversions.

My question is simple: what is the simplest way to get the driveshaft to work with the earlier transmission. Firstly I think I might have "length" issues i.e.: it seems the driveshaft is a little long. Second, can I use a /5 output flange on the earlier gearbox (I believe both use a 1:6 taper) Am I better off using a LWB swingarm and perhaps the /2 driveshaft? Would the /2 shaft work with a /5 final drive?

So many questions too little gasoline.

Thanks guys


Darren
1962 Manx norton
1968 R50/2
1916 Harley Davidson J

[Motorhead]

One Fellow at the Griffth park had a custom /2 conversion

R90 motor to the /2 tranny with a /6 rear ger box?

so I asked how?

He said /2 drvie shaft and /6 cup and the rest was easy to "fit"

so as I think maybe you use the /2 drive shaft AND /6 cup

[Izzypwc]

That won't work. I'm using a SWB swingarm...the /2 driveshaft would surely be too long...

[Motorhead]

Maybe he cut and welded the drive shaft or machined the attchment to use the cup

[Deleted User 62]

It might be easiest to move the engine mounts a bit further forward.

[George Ryals]

Have you tried the /2 Conversion group on Yahoo? They may know all about it.

[mattcfish]

Reverse conversion.....newer bike, old under powered motor, old tranny.........why?

[Deleted User 62]

Reverse conversion.....newer frame, older motor.........why:
Rennsport!!! Am I right?

[Duane Ausherman]

I too was trying to figure out why.

[Izzypwc]

Correct...rennsport replica in the making! I have a great hose tank and killer seat to match. Just need some help on the driveline. Thanks guys.