Tam's New Bike

Interesting! I didn't know you could buy that torque wrench adapter so I made one by cutting bayonet fitting slots into a 32mm socket so a standard spanner would fit into it. And I can use any spanner in it. I use rubber coated ones so they don't slide around.

question about that torque wrench adator.
Assuming my basic understanding of tourge is that its a force (N) then surely by adding that adaoptor you're increasing the distance from the pivot. Wouldnt this inturn increase the active moment on the head of the tourqe wrench? If so that would leave your tourque-er clicking well in advance of when the nut/bolt is at required torque - come'on what am I missing.

I think I'm right in saying that the longer the extension the less torque you need your torque wrench set to for the required torque load at the nut.

So if your 3ft torque wrench was set to 300Nm and you had a 6" extension you'd actually be applying 350Nm to the nut when it 'clicked'.

http://www.cncexpo.com/TorqueAdapter.aspx

[TamSV]

Originally Posted by Stenno

I think I'm right in saying that the longer the extension the less torque you need your torque wrench set to for the required torque load at the nut.

That's it. More leverage = less force for the same result. The wrench is calibrated to it's own length so extending the length means you need to reduce the torque setting to achieve the same result. The fact that the lever is "breaking" in the middle doesn't matter.

If you extended the handle end it wouldn't need any adjustment. You'd be applying less force on the lever but it would still be the same at the handle of the wrench.

[TamSV]

The final part has arrived.



Getting there now.



It's been lots of faffing about, setting up powervalves with the new cables, the 2T oil pump needs to be synced to the carbs and all the usual control adjustments have been sorted out.

I've replaced the 2-stroke oil pipes with clear so I'll be able to check it's flowing. I primed the system with a syringe before connecting the pipes to the oil pump so that should all be ready to go.



Other fluids are all in. The coolant's a PITA - there's a bleed screw on each cylinder plus one on the pump and one on the rad. It needs filled slowly, each screw nipped up as it starts to leak coolant, lean the bike to the right, squeeze the pipes, pat your head and rub your belly.

It's pretty much ready to fire up now. I just need to clean up the expansion chambers which are covered in burnt-on oil from the various leaks. It's proving tough to shift - I need more elbow grease.

[TamSV]

This was a first for me. The front sprocket looked fine for wear, but when I went to take it off I noticed a fair amount of play on the spindle.

The sprocket's held on with circlips rather than bolted down so it gets a wee bit of movement going and wears the internal sprocket teeth away.

You can see the difference between the old and new.



It's the first time I've had to change a sprocket for wear on the inside.

Still, it's a good job the spindle's tougher than the sprocket. I'd rather be going through sprockets than gearbox shafts.

[DarrenSV650S]

Good idea with the clear tubing. Took me ages to get all the parts for the oil pump fitted and working right. Although even then it still fed too much oil because the optimate killed the ypvs unit, so it was stuck on one position.

Can't believe that happened with the sprocket. Scary

I'm a bit paranoid about 2 stroke front sprockets as you know. Don't like how they are just held on with those clips

[TamSV]

Now we're cooking! If your 4-stroke smoked like this you'd be shopping for a new engine.



I'd used a fair bit of oil during the rebuild. It all calmed down once it was warmed up.

Started on the third kick (if you don't count all the kicks before I remembered to turn the fuel on - I've always been crap with fuel taps ) It was a nice feeling when it fired up though.

It's now developed a sticky throttle cable so the tank's back off to sort that out. I wasn't intending on taking it for a ride anyway - no brakes yet. It needs a few other bits put back on too. I just wanted to make sure it was running.

The expansion chambers cleaned up well, from this;



As it stands just now;

[andrewsmith]

Can I have a go please mister

Great Job Tam. Really enjoy your threads. Don't stop buying new project bikes