Very early stages of my savage with Harley 240 rear. GSXR front end build

Ooooo What tank ? One of em ebay CG125 ones ?
Did you have to mod the frame or something to not let the FE hit the tank ?
What GSXR ? Looks like 96-2000 750 from my memory LOL.

Cool.
Srinath.

So what’s the plan for lining up the rear pulley to the counter-shaft pulley?  What is that wheel from?

The wheel, axle, pulley and caliper is from a 2018 FLFBS Harley Fatboy that was written off. I paid appx £650 for the parts and to have the swingarm altered and powder coated.
Apparently I have options with the front pulley. I can either get the stock pulley for the harley fatboy and have a spacer and shaft made to suit, or have a custom pulley made that fits the stock shaft and wide enough to line up with the rear pulley. That will be decided by the gentleman who'll be making whatever he thinks works best. My tiny little brain isnt equipped for the clever jobs!!
I wondered about the 650 not having enough power to move the tyre but do have the mikuni roundslide carb and will be following the advice here on getting a few extra bhp with that and the ufo etc so hoping its enough, but im happy riding slow as my other bike (intruder M800) has all the power i need for everyday riding. I know putting a 240 on has been done before, so time will tell and i'll keep you posted.
Its taken me a year just to get to this point as its being done as and when i can afford to do it and is more hassle than the worth of it but i'll try and give an idea of what its all cost at the end.....incase in the very unlikely event that someone else wants to do it. Lol.

Srinath, it is far easier for the engine to propel 100 pounds (like a heavy rider) than it is to accelerate rotational mass (I’m not going to break out my physics books to prove it). That rear wheel assembly probably weighs double what a stock real wheel assembly weighs. It will make a significant impact on performance. Buttsy has indicated that’s he’s happy to make that trade, but there’s no even exchange here.

Yeah, I’m not trying to rain on the parade here. This bike looks like it will be a blast to ride and be seen on. Just don’t race for titles on it (maybe a Monkey bike). I love your vision for this build.

I love these forums theyre great and the members are always helpful with such impressive knowledge of bikes and engineering in general, so im just grateful to be part of it. I'll keep posting as I progress and thank you for taking the time to comment and share, its much appreciated.

Surprisingly the offset isnt as big as you may think. From the centre of the tyre to the outside of the rear pulley is appx 130mm on the savage and appx 165mm on the harley. The pulleys on the savage are almost 20mm wider than the harley ones.

After just picking up the savage wheel which is still whole, brake hub, axle etc theres not that much of a weight difference either. I'll get hold of a weighing scale to get a more accurate reading.