Member postings for Tom Gullan

Jason,

Thank you for your time and effort.

Regards

Tom

Jason,

Thank you for your thoughts and for the offer of the plans. I would very much like to make a non return valve for myself so would like to take you up on your offer… thank you.

Regards
Tom

Hello,

https://youtu.be/VOkWH87X8ac

**LINK**

I’m looking for some inspiration as to where would be the best place to locate the petrol tank on my latest Upshur IC Engine project… see above link to my YouTube channel.

Ideally I would like the tank positioned with the filler cap inline with the front of the carburettor and slightly away from the engine (the fuel level height must be between ¼” and ½” below the carburettor inlet pipe). For me, this is problematic as I feel that I lack the necessary skills to make this happen.

It has been suggested to me that I locate the tank at the base of the engine then either make or buy some sort of non return valve which would be fitted to the carburettor inlet pipe which is ¼” tubing.

I would appreciate any suggestions.

Regards, Tom

Gentlemen,

Thank you for all your input, after several attempts I manage to get the desired effect.

Regards

Tom

Thank you.

lHello,

At the moment I am turning the blank Cam... would it make a difference if I turne the mandrel?

Tom

Gentlemen,

Thank you. I’m off to my workshop try that.

Regards
Tom

Hello,

I’ve been pulling out what little hair I have theses last few hour trying to work out how to cut the Cam for my build of the Upshur I/C Engine.

The plans appear to show an offset on the mandrel of 0.312”, I can not get this to work.  When I was unable to cut the Cam shape I altered the offset to 0.156”….. this did not work!

I have attached photos of the Cam plans and two of my results.

Can anyone explain where I’m going wrong?

Regards
Tom

Edited By Tom Gullan on 17/09/2017 00:01:17

Edited By Tom Gullan on 17/09/2017 00:03:29

Hello,

Sorry Jeff.... I'm a Driving Examiner not an engineer. I thought I'd given enough information. Thank you for your input, here's the plans I'm working from.

Regards

Tom

Edited By Tom Gullan on 31/08/2017 20:50:32

Edited By Tom Gullan on 31/08/2017 20:50:47

Hello,

I once again find myself looking for some advice.

I am now at the point where I am about to turn the the two flywheels for my little Upshur IC Engine. The plans call for me to turn my cast iron blanks down to 3 1/2” diameter. Each flywheel has to be 0.562” wide with a 0.625” diameter hub protruding 0.125” on each side. My question is, What would be the best method of removing the material between the hub and the outer edge of the flywheel (this has to be reduced to 0.250". The flywheel should end up looking like the flywheel on a Lister D Type

A friend suggested that I mount each flywheel in a chuck and mill the required material out using a rotary table and an End Mill.

Any advice would be gratefully appreciated.

Regards
Tom

Edited By Tom Gullan on 31/08/2017 18:22:47

Gentlemen,

I had no idea that my post would produce so much interest... once again thank you for all your words of wisdom. This is my first Petrol Engine build so I need all the help I can get!

After contacting Minimag and speaking to Julian and Bernadette, the proprietors, I chose their MCL-1 Low Power Capacitor Ignition kit (this is powered by two AA batteries). I found Julian and Bernadette to be most helpful and the kit was delivered the next day. At this point I should say that other than being a satisfied customer, I have no other affiliation to Minimag.

Mounting tha 3mm x 2mm neodymium magnet on the camshaft on such a small engine may be problematic. I think my best option is probably to go for the crankshaft and take a hit on the battery power which is being wasted.

I tested the kit this evening and it works fine on the CM-6 spark plug. Julian told me that he has used this ignition kit to run a Lister D type.

Regards

Tom

Gentlemen,

Sorry for the delay in answering your responses. I've contacted Minimags and bought one of their setups.

Thank you all for your comments.

Regards

Tom

Hello,

I'm after some help again! I am in the process of making a small 4 stroke Petrol Engine with a 3/4" bore. I'm almost at the stage where I need to fabricate the points. Does anyone know where I would be able to buy power pack/coil? I have been told that you can buy ones which run off AA batteries but as yet I have not been able to source one. I'm using a CM 6 spark plug.... the type used in the smallest Honda generators.

Any help would be appreciated.

Regards

Tom

Thank you John.

Regards

Tom

Gentlemen,

Thank you for all of that useful information.

Tom

Edited By Tom Gullan on 15/07/2017 22:40:33

Edited By Tom Gullan on 15/07/2017 22:41:09

Edited By Tom Gullan on 15/07/2017 22:41:47

I have no connection to Noggin End Metals other than the fact that I have used their services on numerous occasions. I have always found them to be competitive and quick. A quick phone call and a credit card.... sorted!

I hope this is of some help.

Regards

Tom

Gentlemen,

Thank you.

Regards

Tom

Hello,

I have decided that my next project will be to build the Upshur IC Model Pump Engine. My understanding is that I will require a 2:1 ratio gear set. I am not at a standard where I would be able to cut a set of gears for myself so can anyone point me in the direction where I could buy them?

Also, has anyone any hints or tips for this build?

Regards

Tom

Gentlemen,

Thank you very much for your input. Sorry for the delay... I have recently had problems with my internet connectivity and have just received a new router from Sky. The new router appears to have done the job!

I am a mere Driving Examiner and have no engineering qualifications. I do not make a habit of using a DTI in that manor but I felt that I was struggling with my description so that was my reasoning for using the DTI.

I have made very subtle alterations to the gib screws which has made a big difference. I have checked the flatness use Marking Blue and a Surface Plate. I now happy with the tolerance that I have.

Once again thank you for all your help.

Regards, Tom