Chenery Vee-Twin

Two pictures of my completed Chenery Aero Vee-Twin.

Stats for the interested-Some 2000 hours of workshop time over a two year period. All machining carried out on a well "tuned" Clark Mini lathe and a Warco WM 14 mill,with self fitted DRO.Material kit and drawings from Hemingway kits.

All work is to the drawings supplied and no modifications were introduced.

I havnt fired it up yet as I have resisted the urge and am making a respectable

test bench for it. Perhaps next week we will hear what sort of noise it makes

Edited By JasonB on 08/04/2016 07:28:57

No pics Keith, did you make an album first?

Yes, they are there if you click on "2 photos" i had a suspicion that all was not well , as this is my first time of uploading pics.

Nice work Keith, I look forward to the "noise" when you show it running.

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Kieth that looks a really nice job.

Regards, Nick

Good looking engine, there is something about red

I have put the photos in your post.

Testa Rossa!

Apologies for that being singular, I have no idea what the plural is in Italian.

Edited By V8Eng on 08/04/2016 09:03:40

Very lovely! Will wait somewhat patiently for the noise. Should be great!

Pete

Thank you all for your comments and thank you Jason for adding the photos to my post. I would be interested in knowing where I went wrong.

The red heads are painted. I tested several high temperature paints and the only one I found to be methanol proof also was Halfords own brand High Temp Paint, in a tin . The aerosol version is not methanol proof/

Keith

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Keith, I think the red remark from Jason was a light hearted jibe aimed at me.

Nick

No Aimed at me, I have a bit of a reputation for painting engines red, hence the title of this build thread, Ramon tends to pull my leg about it. And you know there is a very nice red lightweight on the web though I have something brighter in mind for that

In my defence the original engines all the models were based on were red.

Keith, once the photos are in your album you can click on the little camera icon along the top of the box you are typing in and that will take you to a list of whats in your album. Just select the photo you want and say OK.

J

Hemingway's site refers to 11 A3 Pages of diagrams and 23 Pages of build notes for this model. Along with Keith's 2000 hours of work you can appreciate the huge effort that's gone into this engine. Would be far beyond me I'm afraid. Very well done indeed, sir

Dennis

Hey Keith, just wondering if you have this lovely engine running yet? Would be awesome to see a video of it running mate

cheers

Dean

Great job Keith! any noise yet? JD

Hi Dean and Jeff,

The engine startled me in firing first squeeze on the starter, but it would not run for much more than 30 seconds and stopped if I switched off the power to the glow plugs. It was originally designed for spark ignition, but is supposed to be OK on glow. Compression was not good as designed, so I re-machined .030" off each head, which certainly improved things,but it then kept blowing a gasket. One of the weak points as designed, is that you cannot get at the head nuts with the rocker gear in place, so you are unable to re-tighten after a run.Higher compression also required a change in the timing and this is still a subject of experiment.

I eventually solved the head tightening by making long nuts for each head so they are now high enough to get a spanner on and this has stopped the gasket blowing problem.

I have changed the carb too from that in the photos and now have a clone of an OS 35 carb fitted.

I think I am at the point of being satisfied enough with its running to make a video, so watch this space.Holidays have got in the way over the past two weeks, but we are now back to normal.

Keith

Looks lovely. A work of art.

During test runs of this engine I wondered what the running temperature was, as parts such as cams are Loctited on, so I used a non contact IR thermometer to measure the head temperature after a five minute run.The result is a puzzle to me and I hope someone out there has some answers,

The puzzle is that the left head runs some 30degrees C hotter than the right head! Around 110 degrees left and 80 degrees right.I have checked and re checked the cam positions etc Compression on both sides is equal to a hand turn, The left side spits out much more castor oil than the right. I drain the oil after each session and a lot of castor is present in this and I assume this is due to blow past the right piston more than the left. I have changed the plugs around and tried a different make, all with the same result.

Any ideas fellers ?

Keith

Any ideas fellers ? Uneven ring gaps ?

I have a similar problem with my Nemett opposed twin, I have put it down to the crank throwing the oil up onto the underside of the "cold" cylinder. Need to get round to making some baffles

Engine rotation may tend to throw more oil up in the right hand cylinder when viewed from the front, if rotation is anti-clockwise when viewed from the front. The extra oil can give that cylinder extra cooling. This is a sometime issue on full-sized Harley V-twin engines when building them for racing etc.

Edited By Hopper on 27/09/2016 10:23:05