[vhgmcbuddy]

That should read ” feeler “

[vhgmcbuddy]

Checked the valves with a deeper and there is hardly any move many on the piston. I think I will check compression for peace of mind

[vhgmcbuddy]

As Wristpin stated is compression good, if you take spark plug out and stick your thumb over hole turn engine over quickly and it should blow off and if you lay plug on head at same time as your thumb is blown off a spark should be seen, if not have you had engine apart and got valve timing wrong.

[vhgmcbuddy]

The origins of the Sisis Auto Trak, was first called a Ransomes Hargreaves which would have had a large JAP engine and be from the 1950’s, they then changed the name to Ransomes Sisis Aero Main, from the early 70’s Sisis went out on their own, dropping Ransomes.
Hope this helps

[vhgmcbuddy]

Valves / Compression?

[vhgmcbuddy]

Thank you that is very helpfull. The engine has no spark so i was looking for points,condensor and possibly coil. the steering wheel has been an addition which i have now removed but then requires throttle lever and control lever. I was given the SISIS and advised it was pre 1950 which didnt make sense to me looking at the MAG engine.

[vhgmcbuddy]

Looks to me you have a Sisis Auto Trak which was made for use on hard porous areas, the give away is the shortened handle bars, looks like you have a MAG engine on it, which I think from memory is an SR1, from that I deduce the age to be from 1978 to the early 1980’s, parts and attachments usually can be found in ex- municipal auctions

[vhgmcbuddy]

Brick and Patio Cleaner; this is a weak Sulphuric Acid

Most of the proprietary brick cleaning products are Hydrochloric acid based, not Sulphuric. It should be noted that when diluting any acid it should be added to the water and not water to the product. Long gloves, full face protection, and do it out side in the fresh air!

[vhgmcbuddy]

Your image relates to the engine so are we to assume that it’s engine parts that you need ? However if it’s Sisis chassis parts try Dennis Sisis themselves, google them.
Engine parts could be tricky. Unfortunately, until recently Meetens Ltd would have been the first port of call but have ceased trading. Their stock has been taken on by L&S Engineering, so try them.

[vhgmcbuddy]

Hi it’s Will thanks for getting back to me I never thought of using brick cleaner before and funny thing is I have a friend who has about 1000ltrs of the stuff. Yes the pads are out but I don’t think the assembly has moved in years the previous owner said he never used the brakes. When you say bicarbonate of soda do you mean the stuff you use in baking or am I confusing it with something else? Sorry if that a stupid question.
Thanks for your help and advice
Best wishes William

[vhgmcbuddy]

Hi it’s Will I have managed to remove one of the calipers today and can now see how it all works. The plunger are well and truly stuck I wondered about using some heat on the caliper but it is iron so I’m thinking probably not. I have been successful in removing lister d flywheels using a propane torch and gradually heating it all up but this feels a bit risky I don’t want to crack or distort the caliper. I wondered what your thoughts are. It’s soaking in penetrating fluid for a week now so it might free up anyway.
Thanks for your help and advice
Best wishes William

[vhgmcbuddy]

well done Geoff, good programme, a star is born with new overalls

[vhgmcbuddy]

mine arrived this afternoon plenty to read well done everyone

[vhgmcbuddy]

Hopefully this photo will work for everyone!

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[vhgmcbuddy]

Thanks for all your comments. I’m still trying to put a smaller photo on but in the meanwhile, no-one has the replacement part I need in their shed by any chance?!!😉

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