Author Topic: Push rod fun  (Read 1749 times)

Offline bikerboy

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Re: Push rod fun
« Reply #15 on: 30.04. 2016 01:44 »
To be honest I find no problem with this job whatsoever but I have a friend who does. His solution is quite easy.

He has two long studs that he slips into the rocker box (inlet side) to give him something to push the comb up against.. He then slides the rocker box down the last inch or so with these studs making sure it drops straight down. The comb is in the perfect position (also located on the studs) and they drop in every time.

Unscrews the studs by hand and drop the bolts in their place. He reckons it saves him so much grirf
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Online Greybeard

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Re: Push rod fun
« Reply #16 on: 30.04. 2016 09:03 »
He has two long studs that he slips into the rocker box (inlet side) to give him something to push the comb up against...
Sounds good; I'll give that idea a go next time.
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Online Billybream

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Re: Push rod fun
« Reply #17 on: 30.04. 2016 19:18 »
Being so careful today when changing my tappet screws, and they were well worn, got to the last one and yes you guessed it the push rod slipped out of the rocker cup, really felt let I had let myself down, but fortunatey with the help of some bent wire got it back in. So no major drama, started her up after winter lay up, having had the mag overhauled by Priory and fitting SRM clutch cover with top hat and bearing, resulting in two finger clutch operation, so pleased, shame you cannot see this great piece of machining.
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Offline Gasket4450

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Re: Push rod fun
« Reply #18 on: 30.05. 2016 13:05 »
        I use the two removable threaded rods technique too, and have done for a few years now.  It seems to get easier each time I do it...... each to his own, I suppose.

Norman T
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Online RichardL

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Re: Push rod fun
« Reply #19 on: 30.05. 2016 13:45 »
I don't get it. Is there some reason you guys don't think the actual rocker-box bolts are studly enough, thus requiring surrogate studs to step in as stops for the comb?  The bolts work fine for me.

Richard L.
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Offline Gasket4450

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Re: Push rod fun
« Reply #20 on: 31.05. 2016 20:28 »
Richard,
                                I use a couple of threaded brass rods about 5" long for no other reason than their extra length allows me to keep the rocker box right up against the underside of the frame tube while I sort everything else out underneath it, before sliding it down the rods into place. Gives me more room than the rocker box bolts do. Just personal preference, I s'pose...

Norman T
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1960 A10, alive and thriving. 1959 A7 living on borrowed time !

Offline TT John

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Re: Push rod fun
« Reply #21 on: 01.06. 2016 11:52 »
If you ever meet the ghost of whoever designed the rocker box on these bikes will you give him a good kicking please.
Also same applies to the bloke who gave us that crappy comb device!

I did have success with the comb after seeing a post on the forum somewhere, I think there may have been photo's also, the idea is to bend the comb so that you can clamp it to the cylinder fin with mole grips, it made it so much easier, and with the copper gaskets, this stops all that frustration of the compo gaskets popping out of line, I think the photo's may be on this forum somewhere.

Regards John
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Online Greybeard

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Re: Push rod fun
« Reply #22 on: 01.06. 2016 16:50 »
...the idea is to bend the comb so that you can clamp it to the cylinder fin with mole grips...
Sounds like a good plan; I'll try that next time. If the comb would stay put it would make a big difference.
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Online bsa-bill

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Re: Push rod fun
« Reply #23 on: 01.06. 2016 18:02 »
Quote
you can clamp it to the cylinder fin with mole grips..

Sharp intake of breath
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All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Offline TT John

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Re: Push rod fun
« Reply #24 on: 02.06. 2016 10:45 »
I did see one useful method of getting these in easily, that is with the comb, by bending it (stepped)  so that you get a flat piece on top of the cylinder which you can clamp this with mole wrench, keeps it in place. HTH

Regards TTJohn
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Online bsa-bill

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Re: Push rod fun
« Reply #25 on: 02.06. 2016 10:50 »
I'd be happy with a screw up clamp for sure but Mole grips or any over centre type clamp on a brittle fin - be very careful
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All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Offline nimrod650

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Re: Push rod fun
« Reply #26 on: 02.06. 2016 19:11 »
a magnetic comb to keep it in place  *????* *????*
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Online bsa-bill

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Re: Push rod fun
« Reply #27 on: 02.06. 2016 19:26 »
great for Flash, not so good on Rockets

Sorry lads I'm fulfilling a long desire to be a damp squid today
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All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Online Greybeard

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Re: Push rod fun
« Reply #28 on: 02.06. 2016 20:32 »
great for Flash, not so good on Rockets
Just need an aluminium magnet.
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Sorry lads I'm fulfilling a long desire to be a damp squid today
I think that's damp squib actually   ;)

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Online bsa-bill

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Re: Push rod fun
« Reply #29 on: 02.06. 2016 20:40 »
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I think that's damp squib actually 

 ;)  I think that's right, but squids are more often damp than not - but lets not carp on about it *smile*
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All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco