Shed night

[Willdat?]

I'm away on a school camp from 14-18 September, but otherwise any night would be great - I've got a 15 mm ring spanner. But WW will have one I'm sure...

[topo]

[QUOTE=
Anyone got a spare lc4 400,600,640 motor ??[/QUOTE]

Yip, swap ya for a 650@

[Underground]

Yip, swap ya for a 650@

Yeah right

[warewolf]

Couldnt take the cylinder off without a 15mm ring spanner (odd size aye)
so make sure you have one of those WW

But WW will have one I'm sure...

It's only an odd size if you are used to jappers... But I had to borrow one at the first shed night to re-torque my cylinder as the first pass on stopping the base gasket leak I now have to fix.

Ok, here we go, calendar event here

Where: Warewolf's shed (PM for address)
When: Monday 7th September, 7:00pm onwards

Job list:

• Compare the internals of Underground's LC4 400 with Warewolf's LC4 640.
  NOTE: Can someone bring a 15mm ring spanner, please?
• Strip/clean carb on Warewolf's DR250, see if she'll fire up.
• Lube & install ZK-Awesome's new clutch cable

Anything else? Anyone?

[Willdat?]

Adjust the front drum on my Shanyng SY50 as I'm convinced it can't be as bad as it is. Also a quick look at the headset bearings/front suspension. Very clunky...

Then we can have a wheelie competition on it...

[NordieBoy]

See who can do a wheelie over it?

[Willdat?]

I don't know if that would be challenging enough...she's not exactly a big bike.

[Willdat?]

Morleys just rang me...new piston, new rings, oversize rebore, new valves, new valve seats, new gudgeon pin and the bike still has the same problem it had when I took it in there, 7 weeks ago

Dieing as soon as the throttle is opened up, he reckons new CDI. I think I'll probably just pick it up and take it home, rewire the bike, and pick up a second hand CDI when I find one?

[NordieBoy]

With all that done it should go quite nicely once it's running.

Borrow Warewolf's CDI and take it around to them to test in the bike...

[Willdat?]

Good thinking 99...will see if Colin is around.

[Willdat?]

Warewolf's CDI, same problem...bugger.

[Willdat?]

I think I'm going to pay the bill, bring it home and rewire it slowly, carefully and neatly.

Unless anyone has any other ideas why it will run with the choke on when cold (not perfectly, but enough to get you 500m down the road or so). Once the choke is off and warm it will start fine, but die as soon as the throttle is opened up. That and check that the stator is all good...

[NordieBoy]

That to me feels carbish.

Does it rev ok with the choke on?

[JATZ]

That to me feels carbish.

Does it rev ok with the choke on?

I'm thinking it's fuel issues too, might be worth trying werewolfs carb aswell

[warewolf]

Yep, sounds to me like a carb issue. Some thoughts:

If you had a weak spark, it would run better at idle when warm than cold, as it takes a stronger spark to ignite the cold rich mixture. Weak spark is the only (electrical) reason it would misfire when revved, as more revs requires better spark. That's assuming the CDI takes care of advance, which in this case it does.

There's a few places you could try for more info; thumpertalk.com, dsn_dr or similar DR-specific list, or even advrider.com (thumpers or a tech forum). There's some pretty clued-up ppl on those, in amongst all the noise.