UK Karting - Notice Board (2-Stroke Karting) : Re: Choking

Notice Board (2-Stroke Karting)

Re: Choking
Posted by 'itpro' on 08 Sep 2010 @ 12:35

| View Message Thread | Reply to this message |

itproJoined: August 2001
Total Posts: 6
[ View User Profile ]

Hi John....

Again, my long history informs me on this matter.

Wheh I learned to choke (around the time of the invasion by the Normans...), we had Rotary Valve engines. The carb was short and directly above the chain. In those days, Chain Guards were NOT compulsory. It was also the habit of the more stupid amongst us to choke with the Palm-of-the-hand and not the closed-fingers as it made a better 'seal'. That allowed the fingers to be curved UNDER the Tillotson during choking and even while 'resting' the hand on the carb in anticipation of 'choking'.

Those of my age will KNOW how dangerouis that was as the length of the curved fingers was the same as the distance between the mouth of the carb and the chain.....

If you place your hand near a carb that is sucking HUGE quantities of Air, you hand BANGS into the carb as the 'seal' is formed.

.....Now think about a set of fingers being 'sucked' towards the rapidly rotating junction between the chain and the drive sprocket.......

.....I was at Rye House one day when 'Mr Black' (that dates me!) collected a mangled glove from the main straight that still contained 2 fingers..... where someone had done E*X*A*C*T*L*Y that!

*******

It's never been my experince that an engine seizes at the START of the overrun process as there SHOULD be plenty of oil still remaining on the surfaces for the 1/2 second between closing the throttle and applying the choke-hand. There's no extra heat being generated and the slow-jet, when correctly set, still SHOULD BE delivering fuel at over-run. In truth, on a TKM..... the VAST majority of the fuel is being delivered by the slow-jet which is BEHIND the butterfly in any case and is thus delivering almost a FULL quantity of fuel which almost ZERO combustion is occuring through lack or air.

So.... I take your point but still defend my chosen sequence of actions.... even though it's not quite so critical today as it was in my youth.

Ian

Message Thread:

Choking by 'ivanmalley2' (07 Sep 2010 @ 0:02)

Re: Choking by 'Traxtar' (07 Sep 2010 @ 0:23)

Re: Choking by 'Attack2001' (07 Sep 2010 @ 1:19)

Re: Choking by 'itpro' (07 Sep 2010 @ 1:48)

Re: Choking by 'Reg' (07 Sep 2010 @ 13:38)

Re: Choking by 'AlfieMoon' (07 Sep 2010 @ 14:46)

Re: Choking by 'Attack2001' (07 Sep 2010 @ 14:54)

Attack 2001, I grant you that accolade. by 'AlfieMoon' (07 Sep 2010 @ 16:56)

Re: Attack 2001, I grant you that accolade. by 'Attack2001' (07 Sep 2010 @ 17:04)

Re: Attack 2001, by 'itpro' (08 Sep 2010 @ 1:34)

Re: Choking by 'BigJohn' (08 Sep 2010 @ 11:58)

Re: Choking by 'itpro' << You are here!

Re: Choking by 'BigJohn' (08 Sep 2010 @ 14:06)

Re: Choking by 'itpro' (08 Sep 2010 @ 14:46)

Re: Choking by 'BigJohn' (08 Sep 2010 @ 15:32)

Re: Choking by 'Newshound' (08 Sep 2010 @ 16:35)

Big John by 'itpro' (08 Sep 2010 @ 16:51)

Re: Big John by 'PaulMRotax' (08 Sep 2010 @ 22:30)

Re: Big John by 'itpro' (09 Sep 2010 @ 10:21)

Re: Big John by 'BigJohn' (09 Sep 2010 @ 18:26)

John..... as full a description as I can manage! by 'itpro' (10 Sep 2010 @ 11:23)

Re: John..... as full a description as I can manag by 'BigJohn' (10 Sep 2010 @ 19:55)

Re: John..... as full a description as I can manag by 'itpro' (10 Sep 2010 @ 20:18)

Re: Big John by 'PaulMRotax' (09 Sep 2010 @ 19:20)

Pauly-baby by 'itpro' (10 Sep 2010 @ 11:26)

Re: Pauly-baby by 'PaulMRotax' (10 Sep 2010 @ 17:28)

Re: Choking by 'brinjono' (08 Sep 2010 @ 17:51)

But you CAREFULLY avoided my request. by 'AlfieMoon' (08 Sep 2010 @ 12:43)

Re: But you CAREFULLY avoided my request. by 'itpro' (08 Sep 2010 @ 13:10)

Still avoiding it then , so it does not exist:} by 'AlfieMoon' (08 Sep 2010 @ 13:29)

Re: Still avoiding it then , so it does not exist: by 'itpro' (08 Sep 2010 @ 14:49)

Re: Choking at other times by 'pccsystems' (08 Sep 2010 @ 17:04)

So is the other 50% spent by you in Soho? NT by 'AlfieMoon' (08 Sep 2010 @ 17:26)

Re: Choking at other times by 'Traxtar' (08 Sep 2010 @ 17:50)

Re: Choking at other times by 'ivanmalley2' (08 Sep 2010 @ 21:19)

Re: Choking at other times by 'PaulMRotax' (08 Sep 2010 @ 22:35)

Re: Choking at other times by 'Liam' (09 Sep 2010 @ 0:22)

Liam by 'itpro' (09 Sep 2010 @ 0:27)

Ivan by 'itpro' (09 Sep 2010 @ 0:25)

Re: Ivan by 'markmorton' (09 Sep 2010 @ 21:42)

Post a Reply:

You may post a direct reply to this message which will appear in this thread.
To post a new or unrelated message use This Form. Top of Page
Notice Board Index

[ UK Karting Main Index ]


News	Karts & Karting	Notice Board	Market Place	Companies Directory	Tracks Directory	Events Calendar	Race Results	Photo Gallery	Links