Demon V8 (multiplied 1.5)

[Michael Rosenbauer]

got it!

 

[bobden72]

My pistons have no taper or diameter reduction on top.
These model engines have no hardened parts, camshafts, crankshafts, valve seats etc, so they can't run continuously for hours and hours, just a few minutes each time.
This means that they do not reach high temperatures, in my opinion the conical or smaller piston on top is not necessary.
Also the piston drawing , designed by Steve Huck does not require smaller on top.
In any case reduced on top it can be done, it is a technical perfection absolutely necessary for larger engines

Quite agree with you in all aspects.

 

[retailer]

You are making great progress can't wait to hear it run make sure you post a video if you can.

 

[Foketry]

You are making great progress can't wait to hear it run make sure you post a video if you can.

I hope to hear the first signs of life by January / February

 

[Foketry]

The piston rings

 

[Foketry]

lapped piston ring

 

[Foketry]

The piston ring before and after lapping

 

[Foketry]

my self-made lappig machine from brake disc

 

[Foketry]

The head
machining of combustion chambers, the compression ratio will be 8: 1

 

[Foketry]

Exhaust and intake holes

 

[Foketry]

OR housing for passage of water from block to head and then to the radiator

 

[Michael Rosenbauer]

https://www.ebay.de/itm/55529-2-Ach...688489?hash=item544b7c4629:g:0LgAAOxyepRRvzFx
Hey Foketry this is the tilt vice.
If you have no other choice to get it, we find a solution.
Depence on shipping costs to Italy.

 

[petertha]

I don't have a tilting vise but have seen Groz in a store that didn't look too bad. They are from India I think.
http://www.groz-tools.com/index.cfm?md=Content&sd=Product&ProductID=114

Like Asian tools, the quality can vary a lot for what looks generically like the same thing in a picture.

 

[Foketry]

https://www.ebay.de/itm/55529-2-Ach...688489?hash=item544b7c4629:g:0LgAAOxyepRRvzFx
Hey Foketry this is the tilt vice.
If you have no other choice to get it, we find a solution.
Depence on shipping costs to Italy.

ok thanks for the information, but today I bought this one in England
https://www.rdgtools.co.uk/cgi-bin/sh000001.pl?WD=tilting vise&PN=100mm-Tilting-Machine-Vice-904.html#SID=356
I hope the quality is satisfactory, I think it's made in China

 

[Foketry]

I don't have a tilting vise but have seen Groz in a store that didn't look too bad. They are from India I think.
http://www.groz-tools.com/index.cfm?md=Content&sd=Product&ProductID=114

Like Asian tools, the quality can vary a lot for what looks generically like the same thing in a picture.

I know India well , I have been many times for business before my retirement
I still have Indian friends but the costs and transport times are too high from India to Italy
Tanks

 

[Hobbyists]

my self-made lappig machine from brake disc
View attachment 112813 View attachment 112814 View attachment 112815 View attachment 112816

very nice, can you elaborate a bit more about this machine Thanks

 

[Foketry]

very nice, can you elaborate a bit more about this machine Thanks

It is a very simple machine built with a used brake disc from my car , if you have one or more specific questions about It, I will be happy to answer

 

[Foketry]

the exhaust gaskets from a sheet of Teflon 0.3 mm thick

 

[Foketry]

The header flange from brass sheet 1.5 mm glued on the wood

 

[Foketry]

the first pump built, I modified the design, replacing the gears with an impeller

Attempt failed, the pump does not have sufficient flow