supercharged V12 2 stroke

[Alan JacksonParticipant @alanjackson47790]

Dean, you cannot stop now. This work of art as you have shown is full of trials and tribulations and "can't be bothereditess" is the hurdle you must (just for your fans, me included) overcome. More power required Egore.

Alan

[dean clarke 2Participant @deanclarke2]

LOL yea i know i wouldn't sleep at night if I didn't get it finished and hear that loverly whiney bark burst from those loverly exhaust elbows. Luckily the ole can'tbebothereditess is only a temporary affliction and once i have got rid of a couple of dragging on jobs on the home front all energy and power will become focused on the completion of this beast ( and a couple of other little surprises too eh, he he he)

cheers for now

dean

[dean clarke 2Participant @deanclarke2]

Ok so now i am just in the finishing stages of the supercharger. All thats left is to machine the vane slots and make the actual vanes. While it took quite a bit of fiddling around to get the alignment of the rotor vane and end caps etc right I got there in the end.

cheers

dean

The vanes are cut from 1/16 th phenolic and the drive pulley system will be mounted on a steel hub with an aluminium pulley to allow for easy pulley changes when experimenting with drive speeds.

[Bill PudneyParticipant @billpudney37759]

That's fantastic Dean!! Great work. I especially liked your self control with the crankshaft!

All the best, keep up the good work.

cheers

Bill

[dean clarke 2Participant @deanclarke2]

Well here's the supercharger drive assembly all finished, now its onto the conrods and pistons

thanks

dean

[Jeff DaymanParticipant @jeffdayman43397]

Dean, your engine and supercharger look great. Congratulations on a fine job.

One note of caution though on the supercharger drive. I have designed several o-ring drives in office machines, to drive rollers by electric motors. In these machines I followed the o-ring maker's design guides for best practices and power to be transmitted etc. Unfortunately these drives were not successful, either not able to transmit the power required, or with rapid wear, or with severe flapping at high speeds.

Not saying yours won't work, it might. Just suggesting to leave room for toothed belt and synchronous pulleys drive, as a backup plan, in case of trouble with the o-rings.

I had best success with Gates PGGT 2mm and 3mm synchronous belt systems in office equipment and in later machine designs for automation equipment. If you do use such a system, be sure to call the belt suppliers to check that sizes selected are currently available, and do buy some spares in case they are discontinued at some point in future. You can also purchase pre-milled aluminum pulley stock from Gates and bore to suit.

Good luck, JD

[dean clarke 2Participant @deanclarke2]

Hey thanks for the info, yea i was wondering about the exact same thing but thought i'd just try the homebuilt option first as i need to fiddle around with the drive speeds. Once the drive speed/ratio has been finalised i will probably do just what you have suggested and go to a toothed belt drive.

cheers

dean

[doubletopParticipant @doubletop]

Dean

Try these guys **LINK** plenty to choose from in stock, good prices and they'll ship here. It's where I got my belts and pulleys for the Lynx

Pete

[dean clarke 2Participant @deanclarke2]

Cheers mate thanks, I'll check them out

cheers

dean

[dean clarke 2Participant @deanclarke2]

Well got a bit sidetracked on the v12 project, (well kind of). Thought i'd start on the engine mounting system for a bit of a change from engine parts and wanted to set this engine up on an aircraft style of engine mount. These will be mounted onto a firewall looking stand which will have a fuel tank and ignition system installed as part of the display mount. here's a couple of photos of the mounts at the first stage, ready for cleaning up and painting.

cheers

dean

[dean clarke 2Participant @deanclarke2]

Well been rather productive over the last few days and have managed to complete the engine mounts and lugs. These are now ready to be fitted to the red mahogany stand and photos will follow as soon as i have the stand finished. Then onto the tank assembly and then back to making engine parts.

cheers

Dean

Should look reasonably good when its all done, here's hoping anyway.

Dean

Edited By dean clarke 2 on 29/04/2014 11:05:19

[Danny M2ZParticipant @dannym2z]

G'day Dean.

A true labour of love. What sort of prop are you going to set it off with and what size?

A carved laminated mahogany job with brass protectors would maybe do it justice?

Regards * Danny M *

[dean clarke 2Participant @deanclarke2]

Yea maybee i'll laminate a walnut and white ash or red mahogany and white ash with nice brass protectors, that would look great. I think i'll concentrate on getting it running first though. Couldn't resist a couple of display stand progress shots so here they are. Working on the tank at the moment.

cheers

dean

[dean clarke 2Participant @deanclarke2]

Ok so got a bit of time in the shed today and made a start on the fuel tank assembly.I decided that a tear drop shape for the tank would look quite nice so went ahead and started making this. Below are some progress shots and i think it will look very nice mounted on top of the brass side panels, these will end up machine turned to give that nice swirl effect on the side panels. The tank and all fittings will be bright polished.

thanks

dean

The two small holes in this last shot are for the fittings of the sight glass fuel level gauge. Fuel feed line and vent pipe still need to be added and also the mounting brackets.

dean

[dean clarke 2Participant @deanclarke2]

Yay a bit more time in the shed and a bit more completed on the v12 project. I have managed to complete the tank assembly and have got a good way towards getting the finish put on the whole mount/tank assembly. A friend of mine made the suggestion that engine turning would look rather nice on the two brass sides of the tank mount, turns out he was right ( i reckon anyway) As this was my first foray into this kind of finishing a bit of time on the net and a few experiments later i found that a piece of dowl turned to the required dia and fitted to the mill worked well enough. I couldn't resist assembling the engine and mounting it with the tank etc to see what it looked like. Below are a couple of photos of the test assembly.

cheers for now

dean

Now it really is onto the rods and pistons.

Dean

[dean clarke 2Participant @deanclarke2]

Well it's been insanely busy round here lately so not much time has been allowed in the shed but i have never the less been able to make a start on the conrods. photos below show the progress to date.

next step is to deburr them and radius the big end, drill and tap the bolt holes, seperate the big and cap and ream to final size. then its onto seperating the conrods from their partners and radiusing the little ends. then onto the pistons and carbs, fuel rail and ignition rails, plug inserts and then the breathing of life into the beast.

cheers for now

Dean

[dean clarke 2Participant @deanclarke2]

Well as it's been some time since i posted any sort of update so i figured it was probably about time i got to it. Soooo, here's the latest development on my blown V12 2 stroke engine build. After a great deal of sidetracking and slaving i finally slipped the collar long enough to sneak into the shed and finish the set of conrods and gudgeons, photos below. Next its laps for the liners and pistons, then make and fit the pistons.

 

Cheers for now

Dean

Edited By dean clarke 2 on 11/07/2014 13:12:21

[David ColwillParticipant @davidcolwill19261]

Good to see things happening again. I've been watching this from the start and am looking forward to seeing the finished engine!

David.

[dean clarke 2Participant @deanclarke2]

You and me both. Gets quite frustrating not being able to spend the time working on it. Life just gets in the way too much sometimes, oh well keep plodding along.

Dean

Edited By dean clarke 2 on 12/07/2014 01:33:55

[dean clarke 2Participant @deanclarke2]

Well i managed a small amount of time in the shed to work on the v12 project this last week and have managed to make the cylinder liner lap and am now making the piston lap. then i will start on the actuall pistons themselves, will update with photos in the next couple of days.

cheers for now

dean

[Russ BParticipant @russb]

Dean,

Your "couple of days" time scale is about the same as mine!

No rush or anything, I'm only on the edge of my seat

Looking absolutely superb so far!

[David Tweddle 2Participant @davidtweddle2]

Lucky you Russ I keep falling off mine.

Love it Dean, just loving it.

Thanks from David

[dean clarke 2Participant @deanclarke2]

Well, Ok, so its been a little more than a few days since I last updated this thread and so I will start with apoligies to those of you who are suffering posteria pain from prolonged perching on the edge of chairs and also to those who have had the misfortune of having lost their balance from said procarious perch and fallen to the floor in waiting. Life does tend to get in the way of such fun things as shed time but then we all must suffer the trials and tribulations that deprive us of model building in some form or other, LOL. Well i have been able to finish making the cylinder lap and the piston lap as the photo below will show.

I have also test fitted the conrods to the crank to make sure they turn freely on the shaft and also don't foul the case in any places. guess what? i have to modify the case just slightly to avoid the rods collecting it on one side of the revolution circle. Oh well.

The other thing that s has been a major consumer of spare time over these last few weeks has been the total revamp of the workshop! basiclly i just got sick of spending more time looking for a tool than i spent using by about 600 percent…….. usually the fastest way to find it was buy another, funny how that works aye!!!. well i haven't quite finished but I think we are mostly there, YAY now its back to making some swarf, should have achieved a bit more on the engine build this coming week. Here's a couple of photos of the workshop.

cheers for now

dean

bye

dean

 

 

Edited By dean clarke 2 on 19/09/2014 11:02:31

[dean clarke 2Participant @deanclarke2]

Just thought I'd put up this photo of all the parts made so far for the v12. I have stripped the engine and am now carrying out the mods to the crankcase to accomodate the rods . The next task after that will be to hone and lap all the liners and then make and fit the pistons to each of the rods and their mated liners. After that will be cutting the slots in the supercharger rotor and making and fitting the vane blades. Then the carbs will be finished off complete with the fuel feed rail. The last task I think will be making the ignition rail for the glo plugs then fingers crossed to the start up time.

cheers for now

dean

[dean clarke 2Participant @deanclarke2]

hey guess what? ………………………….. It's only been a couple of days since my last update ha ha ha…… So i have done the crankcase mods required to let the conrods rotate full circle without collecting anything on their way round, and it didn't even take me weeks to get there, YAY !!!!!!!!! so now i am honing the liners and lapping to final polished finish. this will be to a mirror finish.

So I relieved the top portion of the crankcase bore and also both side angles to give the extra room required. Turned out to be an easy fix and very straight forward. Now quickly quickly back into the shed before i'm noticed inside and get absconded into something else.

bye for now

dean

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