Stalling on tickover when on the side stand

bigwol · Post by **bigwol** » Wed Jun 08, 2011 3:08 am

Hi guys, anyone come across this one, or have suggestions for a cure?
My recently acquired model 31 starts and runs fine at all time except when on the side stand. If left to idle it then struggles and dies and will not start while one the stand, but uprighted or placed on main stand is fine again. My initial thought is a float chamber problem, but certainly does not starve when opened up.

wilko · Post by **wilko** » Wed Jun 08, 2011 10:28 am

They all do that sir! (Monoblocs).

Jez H · Post by **Jez H** » Wed Jun 08, 2011 11:08 am

I have always meant to fix that on mine . I won't bother now if they all do it.

Thats one job off the list

wilko · Post by **wilko** » Thu Jun 09, 2011 2:41 am

i also meant to say, YES your bum does look big on that bike!!

orbinrangle · Post by **orbinrangle** » Thu Jun 09, 2011 1:47 pm

If I leave mine on the sidestand whilst it's running it's inclined to fall over. So I don't. It vibrates the stand sufficient for the stand spring to flip it back up.

Jez H · Post by **Jez H** » Thu Jun 09, 2011 2:29 pm

Perhaps thats is why they are "designed" to cut out then.

Merlin · Post by **Merlin** » Thu Jun 09, 2011 3:01 pm

designed"
That would be a first in those far off days.

bigwol · Post by **bigwol** » Fri Jun 10, 2011 2:03 pm

Thanks guys, if it's uncureable at least i've saved myself a few hours fruitless effort and head scratching! My 16ms don't do it though ..........

Oh and thanks for being so tactful Wilko!

1608 · Post by **1608** » Fri Oct 21, 2011 2:56 pm

Just to briefly revive this post and give an answer to the original post; When the bike is lent over the float in the carb jambs in one position, and failing to cut off the fuel at the appropriate level causing it to flood. Something I don't believe happens with concentrics.Edited by - 1608 on 21 Oct 2011 1:56:39 PM

Don Madden · Post by **Don Madden** » Fri Oct 21, 2011 5:55 pm

The jets are concentric with the body, on the monoblock the float bowl is on the left. Carbs are designed for the fuel level to be just below the jets to increase the aspirator effect at low air flow but leaning the bike to the left drops the level well below the jets, starving the engine. Cheers, Don.