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Whittle V8

Camshaft fixture

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Zan23/07/2021 12:13:38
282 forum posts
19 photos

ce6ce1da-ea52-45b9-8c33-8b3b86819bc0.jpegI’m at the stage of preparing to make the camshaft, but need to make the machining fixture and a travelling steady, Iv had the casting for 20 years…. Here’s the problem

The photo shows the drawings. Whittle does not fully explain in his notes about the fixture. (Me July 95 #82) The indexing wheel is fixed to the back of the camshaft , his photos of machining it show this at the right on the Miller. However the drawing states only the “ front indexing plate” so is this a view on the END of the fixture OR the view from the Front of the engine/camshaft. I think it’s the former but if I am wrong the engine will run backwards or not at all

Any guidance from anybody who has actually got the engine running would be much appreciated.

 

Edited By Zan on 23/07/2021 12:35:14

Ady123/07/2021 13:18:23
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4689 forum posts
713 photos

A few threads

Emgee23/07/2021 14:10:49
2147 forum posts
265 photos

Zan

Are you a member of the Whittle V8 engine build group on iO ?

If not advise you join at the following link, lots of info on that group from people who have completed the build.

**LINK**

Emgee

See note on my picture, cannot confirm this is correct though.

whittle camshaft machining.jpg

Edited By Emgee on 23/07/2021 14:19:16

Zan23/07/2021 23:01:24
282 forum posts
19 photos

Thanks emgee. Your shaft looks good! Indexing on both ends of the jig?

I joined the group and asked in there as well but still hoping for an answer in here

Emgee24/07/2021 00:45:49
2147 forum posts
265 photos

Zan

The 3 plates were clamped as one when drilled and reamed to make sure the bearing bores were aligned, all indexing was done at the front as detailed by Eric in the write-up.

Emgee

Zan24/07/2021 13:15:35
282 forum posts
19 photos

Emgee

So the drawing shows the right end of the jig calling it the front , not the front of the engine which is on the left in your photo with the drawing face outwards on the right, not facing the front of the engine ( actually at the back of the engine!)

Emgee24/07/2021 14:52:28
2147 forum posts
265 photos

Zan

Perhaps someone on the iO group will clarify the details.

The reason behind my note on the picture is that the gear driving pin is held in the indexing end and as the gear is at the rear of the engine No.1 cylinder is at the prop end so must be as shown.

Emgee

Edited By Emgee on 24/07/2021 14:56:44

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