Author Topic: side valve owners  (Read 1250 times)

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Offline stev60

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Re: side valve owners
« Reply #30 on: February 22, 2019, 06:38:04 pm »
Putting a 120 main made a difference to mine, thats with a concentric carb, the plug tells me it dosent like being advanced to far, Ive found the spacer is a must once it gets hot, you probably have less moisture in the air than we do, which may contribute, ive noticed mine starts to drag a bit if temp is over 30

Offline Ginge

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Re: side valve owners
« Reply #31 on: February 23, 2019, 01:22:48 am »
Come on Steve, when does Wellington ever get above 30?

Ginge.

Offline stev60

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Re: side valve owners
« Reply #32 on: February 23, 2019, 01:31:29 am »
Look Ginge im in the Wairarapa that is not Wellington weather, we have reguarly been 34 this summer :)

Offline timsdad

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Re: side valve owners
« Reply #33 on: February 23, 2019, 08:24:03 am »
It's Wellington weather here now - they keep my socks dry!


Ray
Just a motorcyclist.

Offline stev60

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Re: side valve owners
« Reply #34 on: February 23, 2019, 07:23:12 pm »
Just a slight diversion, but how many of you have noticed an increase in performance and less fuel consumption in damp conditions, im not aimimg this at the English contingent :). Water injection has been used off and on for a long time and BMW are using it now with there turbo motors with a big increase in HP. Ive noticed this with my van and mowers which are carburettor  type over the years. Im a dry weather bike rider so cant comment, I assume it comes from the hydrogen which is part of water.

Offline hampshirebiker

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Re: side valve owners
« Reply #35 on: February 23, 2019, 07:45:59 pm »
Mowing in the rain? You must be mad. ;D
Postal - Liphook Hants - But just into West Sussex.

Offline camman3

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Re: side valve owners
« Reply #36 on: February 23, 2019, 08:21:59 pm »
Just a slight diversion, but how many of you have noticed an increase in performance and less fuel consumption in damp conditions, im not aimimg this at the English contingent :). Water injection has been used off and on for a long time and BMW are using it now with there turbo motors with a big increase in HP. Ive noticed this with my van and mowers which are carburettor  type over the years. Im a dry weather bike rider so cant comment, I assume it comes from the hydrogen which is part of water.

Yes I believe it is the hydrogen Steve...a bit like the new hydrogen "fuel cell" cars, that run on hydrogen combined with oxygen, producing water as exhaust fumes!!
1957 C12
In sunny (sometimes) Christchurch, Dorset, UK

Offline timsdad

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Re: side valve owners
« Reply #37 on: February 24, 2019, 08:02:13 am »
It's something that was well known around here back in the '60s in my early days or motorcycling. I had a 4T Greeves for a while and this thing would fly on a cold, damp night and other lads with two strokes all knew about this phenomm . . .  phernoman . . .  miracle. It was discussed many times because it was so noticeable and I have always thought it was a combination of the denser air plus the hydrogen and extra oxygen in the dampness.

It helped two strokes more than four strokes, maybe because of their much larger main jets in pre-oil injection days, and was almost enough to encourage the sales of James and Francis Barnetts!

Not many owners ride their 'strokers in cold, damp weather nowadays, and certainly don't hustle them along like we did back in the day, so it's probably something that's not generally thought about or known.


Ray
Just a motorcyclist.

Offline Vreagh

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Re: side valve owners
« Reply #38 on: February 24, 2019, 09:32:11 am »
An old boy told me about when he worked in the early days of electric generation and during peak demand they would set up a water drip into the intake and when the exhaust glowed at the right hue, they knew the engine (presumably petrol) was at peak power.

Offline bangers-c10

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Re: side valve owners
« Reply #39 on: February 24, 2019, 10:14:47 am »
In the topic of water injection, I have worked with water injection alot over the years, and it is a major benefit in any motors, It would benefit sidevalves alot, only problem is it would have to be a vacuum  draw through.   as on cars its much easier to set up as u can set the cut in from a vacuum pressure switch.    But  I have a 6v small water pump i will set up one day when i have the time, just have to decide if i want to set from throttle or cable .  Theres nothing to water injection, alot of folks can debate it, but unless u have used it, and have set up your own systems, its a no brainer .  U dont need fancy 500$ kits, its just a washer motor and a mist nozzel .     Any questions im happy to answer. I have also built a few HHO systems,       amazing results, and HHo does wonders for the motor.
« Last Edit: February 24, 2019, 10:36:09 am by bangers-c10 »

Offline timsdad

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Re: side valve owners
« Reply #40 on: February 24, 2019, 11:38:46 am »
Gas powered conversions are another device that don't need to be complicated.

In the mid '70s there was a chap I knew through the haulage firm I worked for who had a big old six cylinder Wolsely, or it may have been an Austin Westminster, that he ran on gas. He had a cylinder strapped in the boot with a pipe running from its regulator valve to the top of the carb. Here there was an electric on/off valve worked from a switch on the dash beside another switch that turned the electric petrol pump on and off. The thing would run on petrol through its standard carb, he could then turn the petrol pump off and when the engine started to die, he'd flick the gas switch on and away it would go again with the propane gas just hissing slowly into the carburettor intake.

When the gas cylinder was empty he's just swap it for a full one from the firm's gas fork lift store. The car would run on petrol or gas any time, anywhere with just the flick or a couple of switches. I was quite fascinated by this conversion, he said he'd done no other modifications at all and had just fiddled around to get the pressure out of the cylinder the best for economy and clean running.

I remember being a bit concerned about the fire risk but he said nothing could happen with an air cleaner on and with the engine running. He just had to switch the gas off before he stopped the engine. For many years I meant to do one myself but never got round to it.


Ray
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Offline hampshirebiker

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Re: side valve owners
« Reply #41 on: February 24, 2019, 11:51:04 am »
How was the gas volume regulated to suit differing engine loads and revs?
Postal - Liphook Hants - But just into West Sussex.

Offline bangers-c10

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Re: side valve owners
« Reply #42 on: February 24, 2019, 12:47:44 pm »
The gas set up is a basic propane set up, U can ether run on gas or petrol. yes u flick a switch ,let ether one run out then switch to petrol or gas,   had one on our F100

Offline Vreagh

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Re: side valve owners
« Reply #43 on: February 24, 2019, 12:56:06 pm »
I played with water "injection" on my mk3 midget in the 70s by having water pass through a copper pipe brazed vertically in the exhaust manifold, level was controlled automatically. The water turned to steam and was fed to carburetters. System worked ok until the pipe furred up and melted. It enabled me to run on two star petrol without pinking and seemed to give more torque at low revs but that could be imagination.

Offline hampshirebiker

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Re: side valve owners
« Reply #44 on: February 24, 2019, 01:01:08 pm »
Yes, the switch over was explained bangers. With petrol, the fuel intake is varied to stay in correct proportion with the air. I wondered how this was achieved with a gas pipe discharging into the top of the carb from a constant (although regulated) pressure supply.
Postal - Liphook Hants - But just into West Sussex.