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Hi, Finally I decided to go with 3 phase motor and VFD. I got a cheap new old Delta M VFD drive for around $70. Motor was hard to find as in India I could only get 3 phase motor in 440v. Dual voltage motor are available on custom order and delivery time is long. I converted a 1.1 kW 3 phase 440v...

Hi, I have a Sieg C4B lathe. I am in process of renewing the spindle bearings. The lathe has one tapered roller bearing 32007 at front and a deep grove ball bearing 6206 at rear end. As the rear bearing pocket is deep enough I am planning to fit a axial thrust bearing 30206 there. Some...

Hi Greentwin, You are right about safety standards of Indian sub continent. There are none. Here safety gear is luxury that only a few big companies will provide. I remember sometimes during my childhood some wandering foundrymen would come to visit our city. They would go house to house and...

Hello, I had the same problem when I painted my Ericson engine. Are your castings from Myers? My castings has some zinc added to aluminium. They feel very smooth even when sanded with emery paper and paint does not want to stick to it. I used a normal PU primer and paint. It did not work...

RoyG thanks for the suggestion. I will check with the firm from whom I bought the machine. One of the reason I wanted to do this conversion is that I want to try out single point threading. My lathe lowest speed is also in the same 150-200 range and I am afraid to do threading at this speed. Nikhil

Thanks Don and ninefinger for your replies. I am watching a lot of youtube videos and browsing the internet to get information about the conversion. I came upon this site DazeCars, Upgrading shop tools for variable speed which uses a cheaper option for motor control. But this needs some...

Hello, I have a Sieg C4B lathe. It is similar in size to Sieg SC4 lathe but it has a AC reversible motor and belt and pulley system for speed control. For slow speeds/ back gear the lathe uses a toothed belt of 1.5mm pitch. This belt is "delicate" and gets damaged easily and is very difficult...

I think for the wrist pin maximum force is that of combustion. The force is more or less acting in same direction. Big end has to deal with combustion force as well as mass of all the components, so It needs to be Big. As nerd1000 has said load on 4 stroke engine component is cyclic in nature...

I think it all comes down to you liking the journey or the destination. At the moment for me its just focusing on the destinations. More the better. I have yet to immerse myself completely into this hobby. Afterwards maybe be as Bhagavad Gita says “You have the right to work, but never to the...

Hi, Below is the link for Shoba/ Soba rotary tables from India. Generally have good reviews. They are available in UK/ Europe. Dont know about US. You can try online shopping. https://www.shobha-india.com/product_details.php?slug=horizontal--vertical-rotary-tables Nikhil

Modern marine engines use same principle for starting. Only thing that has changed is the starting air valve is opened by pilot air rather than a cam shaft. There is no need to crank the engine to some particular position for starting and the starting air valve remains close during normal...

You can check reed valves from AC compressors (big industrial types). Maybe they are of the size you need. Regards Nikhil

Yes you are right. I should have said ratio of total volume (Vs +Vc) to clearance volume Vc. regards Nikhil

Hi Gordon, What engine is this? Is it your own design or is it of some proven design? If the clearance volume is high you will not get a good compression even if there are no leakages. Compression ratio is ratio of clearance volume to swept volume. Using a thick head gasket will increase the...

@dsage thanks for the reply. I have very little to absolutely no experience with electronics. As I said earlier I am exploring all the options. My ideas may sound totally whacky to anyone with electronics knowledge. I have downloaded some electronic circuit simulation program on my mobile. I am...

I am just saying. I am just exploring the options. Also I have read somewhere that hall sensors may blow up. I don't know anything about electronics but can these inductive sensors directly drive the coil?

New question to an old thread. Is it possible/ advisable to use a proximity switch instead of hall sensor for the ignition circuit? I just purchased a copy of MEB#34 for D Sage and Gadde ignition system and was wondering about it. Edit I meant inductive proximity sensor like shown below. I...

As a Marine Engineer who has worked on many big engines of 25000 bhp and more I have seen engines without a head gasket or gaskets for fuel valves (injector). The seating areas are lapped with special tools provided and parts are assembled without any gasket, liquid or solid. The cylinder head...

Hi, Following are some pics from catalogue of an Indian manufacturer. Maybe he can ship to you. http://www.apexmachinevices.com/contact.html

Hi, When I built my PM #1 engine I had the same problem. I had all metric tooling. I think I used a 2.5mm endmill and 4mm endmill for the slots. I don't remember if I changed centerline distance for the slots or the pocket dimensions inside the slide valve. The engine is a runner, so I had...