Speed Model mpg

For Speed 20, Speed 25, 3.5 Litre and Crested Eagle cars
johnlayzell
Posts: 147
Joined: Mon May 21, 2012 2:44 pm
Name: John Layzell

Speed Model mpg

Postby johnlayzell » Tue Oct 18, 2016 1:08 pm

Curious if anybody has conducted accurate mpg readings on their Speed model.

We've just returned from a 583 mile trip, mostly at cruising speeds of 50-60 mph, where I kept accurate records of fuel consumed, and frankly I'm shocked and embarrassed!

Before I share, and I will, can others opine?
1925 SC12/50
1937 SP25 VDP Saloon
1970 Peking to Paris Rally VW Beetle

NeilWillatt
Posts: 18
Joined: Sat Jun 16, 2012 7:35 pm
Name: Neil Willatt

Re: Speed Model mpg

Postby NeilWillatt » Sun Oct 23, 2016 8:29 pm

I monitor the consumption of my Speed 25 all the time. When I first had it I was getting about 12 mpg but after having the carburetors set up professionally I now get 16-17, and on one trip up to North Yorkshire and back (about 400 miles) I achieved over 18.

johnlayzell
Posts: 147
Joined: Mon May 21, 2012 2:44 pm
Name: John Layzell

Re: Speed Model mpg

Postby johnlayzell » Tue Oct 25, 2016 5:22 pm

Thanks Neil!

Well, 12.07 mpg (Imperial) was my average. From others, I'm also hearing that 15-18 should be achievable.

Work to do!
1925 SC12/50
1937 SP25 VDP Saloon
1970 Peking to Paris Rally VW Beetle

shaun matthews
Posts: 24
Joined: Mon May 21, 2012 9:30 am
Name: shaun matthews

Re: Speed Model mpg

Postby shaun matthews » Fri Dec 02, 2016 5:58 pm

My Speed 20 SC tourer fully loaded on long runs on the Continent gets around 18 mpg as I keep her off the motorways and trundle around 50mph. Hills and bends do very little to dent it including over the Alpine and Pyrenean passes - Last year we got 18.5 travelling 2,500 miles through Finland/Sweden/Norway- If I use her on UK motorways cruising at 70/75 and generally hooning around the Leicestershire backroads its more like 10mpg . ( However I do have a high ratio (+11%) rear axle)

Simply put - as long as the jet heights are set properly its the inverse of the degree of right boot. Smiles per gallon is the true measure!


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