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new toy . Fairbanks headless

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Re: new toy . Fairbanks headless

Post by mike d on Fri Nov 16 2012, 23:32

one day you mite listen to the old feller that's had loads of items from the states....
it a bloody long way away..about 5,000 miles away feller.....

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Re: new toy . Fairbanks headless

Post by matt86 on Sat Nov 17 2012, 07:56

mike d wrote:one day you mite listen to the old feller that's had loads of items from the states....
it a bloody long way away..about 5,000 miles away feller.....

I do listen mush ... Its the old boys that you learn from . Old tricks etc but when a parcel took that long i had my doubts .....

Anyway its here now .

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Re: new toy . Fairbanks headless

Post by matt86 on Wed Sep 11 2013, 20:56

right all its been a long time but last few evenings i have managed to get the engine running with a few modifications lets call it . Could not get the valve timing set up . In the end i made the puhrod for exhaust valve adjustable so have a more fine adjustment for valve timing .

Thanks to Chris i have a original igniter striker arm which helped alot knowing thats the correct length . But now i can get it to start and run but i have to use my hand as a choke to keep it running by acting as a choke .

Any ideas what can be done ? My theory is the mixture is too lean causing need for a choke but it will kick out black smoke indicating too rich but lean it off and will stop ...

any ideas ?

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Re: new toy . Fairbanks headless

Post by Ibonaol on Thu Sep 12 2013, 06:33

Good to hear your getting it sorted Matt
Someone at the last rally I was at had a similar issue where his Rushton would only run by choking it with his hand. That turned out to be the fuel line non return valve sticking open.

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Re: new toy . Fairbanks headless

Post by StewartH on Thu Sep 12 2013, 10:03

Good point well made Ibonaol - I'd be looking at each and every step in the fuel delivery chain with a microscope - from airlocks in pipework to blocked /stuck vales or air getting in and unbalancing the ratios - all need investigating.........

Good luck Matt - looking forward to the end result and perhaps a video!

Best

Hamish

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Re: new toy . Fairbanks headless

Post by Matth92 on Thu Sep 12 2013, 21:26

Too light/ too heavy spring on the inlet valve? I assume its an atmospheric inlet?

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Re: new toy . Fairbanks headless

Post by matt86 on Thu Sep 12 2013, 22:03

Matth92 wrote:Too light/ too heavy spring on the inlet valve? I assume its an atmospheric inlet?
yes it is matt , im starting to think the timing is too earlly as its blown out 3 paper gaskets now ...

here a video of me acting as a choke to keep her running ..


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Re: new toy . Fairbanks headless

Post by Matth92 on Thu Sep 12 2013, 22:45

does she kick when your trying to start her

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Re: new toy . Fairbanks headless

Post by matt86 on Thu Sep 12 2013, 23:22

Matth92 wrote:does she kick when your trying to start her
has kicked once badly, sounded like a gun!  but not kicking that much , but starts easy.

I can advance the valve a tooth which brings the ign timing forward. But with my adjuster can tweek The valve timing so valve opening and closing when should do

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Re: new toy . Fairbanks headless

Post by matt86 on Sat Sep 14 2013, 21:16

have been playing around with the headless again today and chandged the fuel line and check valve and fiddled with the timing and i can get it to start and run alot better and does not kick ..

Only thing is once its warm , when it fires its a bit lively so jumps a bit , im thinking the igntion is too advanced now ??

any thoughts ?

Il get a video up and you can see for yourselves

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Re: new toy . Fairbanks headless

Post by matt86 on Thu Sep 26 2013, 19:29

right lads i have been busy but i have managed to sort out the thread problem with the valve / fuel mixer assembly . The threads was that worn that you could pull bolt out without unscrewing it and wouldnt clamp down tight .

So i got a friend of mine to turn up some studs up and i drilled the holes out and helicoiled them fitted helicoil with bearing fit compound . My theory was when you take the casting on and off so many times in its life you will be wearing the threads in the hole slowly . So with studs you wont have any fear of damage as will permanently stay in there .



with the mixer back on .



matt


Last edited by matt86 on Thu Sep 26 2013, 19:30; edited 1 time in total

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Re: new toy . Fairbanks headless

Post by Lewis MacRae on Fri Sep 27 2013, 06:58

Looking good, that's a new looking tap n die set you have there?

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Re: new toy . Fairbanks headless

Post by matt86 on Fri Sep 27 2013, 08:29

Thanks but it's not a tap and die set. It's a reamer set and it's old but we'll looked after.

Matt

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Re: new toy . Fairbanks headless

Post by matt86 on Mon Oct 07 2013, 20:01

right lads , my mate had finished making the adjustable trip rod so i can adjust the ignition timing easier .



its got a rose joint on the end , and a lock nut to lock in position .

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Re: new toy . Fairbanks headless

Post by matt86 on Thu Oct 10 2013, 19:51

had my headless running today after the modified trip rod and seem not too bad , needs some more fine tuning but i need to get a fuel tank and trolley for her 1st i think .



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Re: new toy . Fairbanks headless

Post by Lewis MacRae on Thu Oct 10 2013, 19:56

are you going to have this one out on your local rally field next year?

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Re: new toy . Fairbanks headless

Post by matt86 on Thu Oct 10 2013, 19:58

Lewis MacRae wrote:are you going to have this one out on your local rally field next year?
Lewis i think they both will be to be fair . Got all winter to get them on a trolley and fine tuned . I think this will be the one that i will paint .But not till end of next season .

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Re: new toy . Fairbanks headless

Post by Lewis MacRae on Thu Oct 10 2013, 20:10

restore them both?

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Re: new toy . Fairbanks headless

Post by matt86 on Thu Oct 10 2013, 20:18

Lewis MacRae wrote:restore them both?
no point i dont think ....

well the fairbanks has basically been restored mechanically by myself ..

but i may paint it some point as not too much to paint Laughing see i hate painting !

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Re: new toy . Fairbanks headless

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