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Compound fencing

Compound Confidential

This is where Pulling facts and rumours end up being aired on the Internet. Mostly the sources will be treated as confidential, but if the development is well under way and the Puller(s) is/are happy to let everyone know what they are up to, then it will be attributed. In case you're puzzled as to why I've referred to Compound, it's because at most events the Pullers are housed in a fenced-off section sometimes also known as the Pits.

Guest Pullers?

Posted 11th May, 2015

A very recent (yesterday) Facebook post has sparked off this train of thought... Guest Pullers (i.e. Pullers who are not members of an Association of Club Pulling a sledge owned or run by that Association or Club) attending an event organised by an Association or Club would normally be expected to comply with all the Rules.

Let's take for example the SWTPA which is part of the IOPD (International Organisation of Professional Drivers) and all the Association Pulls run under these guidelines. At the Malpas Dearnford Lakes event in 2011 there were two sledges. All the SWTPA competition pulling ran under IOPD. When it was time for the Malpas Club Pullers and guest's to go onto the track, 'Total Friction' (the SWTPA Sledge) and crew left the arena and passed control of the track to the Malpas Sledge ('Radish Planter') and its crew. That portion of the Pulling was run outside IOPD control.

Exactly the same occurred where SWTPA and PPA Pulled at the same event. Each Sledge was only used to hook to Pullers of their respective organisations. No problem and no violation of the respective organisation rules...

This issue is something the BTPA very clearly addressed in their open letter of 2013: -

"...This rule also applies in reverse should any team/tractors that are currently competing at non BTPA sanctioned events wish to register to compete at sanctioned BTPA events they can do so as long as they:

This only applies to the following 'National' classes which are not recognised by the ETPC and therefore not subject to ETPC sanctions for rule violations: -

"This proposal applies to all teams/tractors competing in the following BTPA classes:

Well, at least they (the BTPA) have spelt it out clearly enough.

So shall we take a hypothetical situation where Pullers have been invited to an event but this invitation has not been sanctioned by the organisation running the Pulling. Yes, I think you can see only too clearly where this is going... Safety features (roll bars or cages, wheelie bars, side frames), Flywheels, Clutches, clutch shielding, engine shielding, seat belts/harnesses, overalls, crash helmet, etc., etc... Not to mention insurance...

If there is only one Sledge at the event, part owned by the organising body, how could they waive the rules for guests when they themselves are subject to guidelines laid down by the regulating body for all British Motoring events. Interesting quandary; just saying.

'Redline Frenzy'

Posted 11th June, 2012

Hoset HX60The past winter has proved to be a busy time for John and Richard Sowerby down in deepest darkest Bridgend with 'Redline Frenzy' (SWTPA 2011 Under 401 Champion) getting a very major (sorry, no pun intended) rebuild. John tells me they have now opted for a big Holset HX60 Turbo to improve the Pullers 'breathing'. They have also introduced an new and improved oil system and sump. As with any task the brothers undertake the quality of the workmanship is of the very highest standard...

Deep Sump and Oil FilterThe new deep sump has retained the original oil pump to supply the engine but a second pump, belt driven off the front pulley provides 100 psi of pressure to the Turbo. Two high performance competition Oberg Oil Filters have been fitted, one for the engine and the second on the front of the sump for the Turbo.

Twin pumpsThe new external pumps run in tandem on a common shaft. The one at the rear (left) provides 100 psi of Oil Pressure to the HX60 and the other one provides a pre-load boost of about 50 psi to the injector pump.

Pump drive belt and pullyAs you can see in this photo, the new pumps are driven by a toothed belt directly off the front of the crankshaft. Pumps, oil filter and sump

This photograph clearly shows from right to left the bottom of the new sump, the new Oberg filter, the new oil pump and fuel pump, connected to the fuel filter. Click here to see the interior of the new deep sump.

With the breathing and lubrication sorted the last item on the list was the clutch...

Clutch Plates Clutch Housing Clutch 'fingers'

... which is now an Avon Cams centrifugal (very similar to the American Crower). This needed to be stripped out for checking and inspection.

Steel Flywheel before removalThis photo of the steel flywheel was taken prior to its removal for inspection.

The HX60 fitted in placeJust to round thing off, here is a photograph of the new HX60 in place and fitted with its Kill Flap, or rather in this case a Kill Slide.



Click here to see a You Tube video of 'Redline Frenzy' starting up after all the work was finished. My thanks to John for the story and Richard for the photographs. Why not pay the 'Redline Frenzy' web site a visit.


Meanwhile in a shipping container somewhere in the East of England something stirs!

A well packed Deere Stalker

Those of you out there who either have the original Puller lists from the 1990's or have very good memories will already have worked this one out but for those who haven't...

The Deere Stalker

... here is 'The Deere Stalker' in it's heyday! A genuine BTPA Super Stock and hopefully coming to a Pulling Track near you sometime this year. Dave Williams (he of the 'Wandering Deere' fame) has now purchased this Puller and is still working hard to get it to run the way it should...

The 'Screaming Jimmy'

Updated 18th August, 2017

The last of these pages covered Andy Stevens and 'Big Girl', his International 1040 powered by a V8 2-stroke 8½ litre Detroit Diesel which runs with a supercharger... To say these engines are LOUD is probably something of an understatement. 'Big Girl' was narrowly beaten by 'Noise Pollution' in a public vote for the title 'The Loudest Puller' at the Great Dorset Steam Fair last year. Andy's other Puller, the V6 Detroit 'Twiki' is almost as noisy but on the other hand we have the mystery Andrew Thomas with the 'Batmobile'.

Andrew's Puller is powered by a V6 2-stroke Detroit (same as 'Twiki') and is also supercharged but is fitted with a Caterpillar D6 turbocharger. Result; a (relatively) quiet engine... Why? As far as I can work out it has to do with the velocity of the exhaust gasses.

The as you all realise the exhaust gasses pass through one half of the turbo driving an impeller which is connected via a shaft to the much larger input impeller. Just to make things a little clearer I've included a illustration of how a turbo works...

As I said earlier, because of the design of the Detroit, the exhaust gasses exit the exhaust valves at supersonic speed, producing that very distinctive 'bark' (once heard never forgotten). It looks as if the turbo impeller act as a 'silencer' by effectively dissipating the 'bang' on the blades therefore muffling the 'bark'.

Because the season is yet to get underway I've got an acute shortage of track side gossip, unless you know of any interesting developments... Roll on May!

In the meantime, have a look at this clip of a Euclid TC12 at work. The dozer is fitted with two 6-71 'Screaming Jimmys' (aka Detroit straight-6) in tandem...