Exhaust arrangement

[JimCrawford]

Hi Nipper fans,

I'm preparing a new set of exhaust pipes to replace mine which have probably only got this season left due to corrosion. My old set have the pipes as short open stacks pointing down out of the cowling and this is as shown on the Nipper Kits and Components GA drawing. However it looks as if the cowls are designed much more around aft facing exits, rather like the RF4, and I've seen Nippers - in fact including an archive photo of mine - with aft pipes. I prefer this arrangement as it makes hot air and muffling schemes much easier but I'd appreciate any opinions from the forum.

Jim

[Paul1954]

Deleted.

[JimCrawford]

noisy woisy, strip no likey!

Jim

[Paul1954]

Nothing a set of DC’s can’t sort. I wish you many happy hours of tube bending.

[JimCrawford]

I won't be doing much bending, that will be sorted by Reef Exhausts, specialists working out of Bicester. My part will be withstanding the painful shock of opening my wallet.
Other Nipper folk provided some very useful pictures earlier
viewtopic.php?f=12&t=628
I've cobbled together a first draft scheme - scanned in below. This should be a good starting point.

exhaust scheme 01.jpg (274.71 KiB) Viewed 1316 times

The red lines are the new scheme overlaid onto a basic engine extracted from the Peacock drawings.
The long exhaust from the front port supports the hot air heat exchanger.
Both RF4 type tailpipes are fitted with absorbsion mufflers.

Jim