waikiore 399 Posted September 15, 2021 Share Posted September 15, 2021 Yes 28 litres I have seen it running twice. Quote Link to post Share on other sites
Psyche 633 Posted September 15, 2021 Share Posted September 15, 2021 1 Quote Link to post Share on other sites
twisty 176 Posted September 15, 2021 Share Posted September 15, 2021 There's a video of the Beast being assembled which is worth watching. The thing set the speed record of 128mph in 1911. Apparently at that speed the engine was doing just over 1000rpm. I'd be scared s@#$%less at 30mph in it ! Quote Link to post Share on other sites
Psyche 633 Posted September 15, 2021 Share Posted September 15, 2021 Im just going to leave this here, blown away by this young guy! Its an old vid but first Ive heard of him. Quote Link to post Share on other sites
erice 732 Posted September 15, 2021 Share Posted September 15, 2021 in the 80s watched a typhoon? engined 30?s race car go around pukekohe track at a wings and wheels owner/driver said he liked the pukekohe back-straight as it was the only place he could get the car into top gear didn't like that the power would destroy the narrow classic car tyres can't seem to find any mention of it on the web but did find something similar in brutus https://www.stuff.co.nz/motoring/300387755/meet-brutus-the-most-dangerous-car-in-the-world While Brutus was actually built (well, started being built) in 1998, aero-engined cars initially rose in popularity after WWI as many aircraft engines were available after the war, because Germany was not allowed to have any aircraft. This led British motorsport enthusiasts to do the thing that motorsport enthusiasts have always done and jammed the biggest engine they can get into their cars, as tracks like Brooklands (the oldest race track in the world) only had two banked curves and sheer, outright speed was the priority, making it a simple matter of mount a hugely powerful aircraft engine on an old chassis and use it for racing purposes. Quote Link to post Share on other sites
twisty 176 Posted September 15, 2021 Share Posted September 15, 2021 Jim Boyd used to race the "Lycoming special " at puke when I was a kid https://www.facebook.com/579738785538280/photos/jim-boyd-22-lycoming-special/634105063434985/ Quote Link to post Share on other sites
twisty 176 Posted September 15, 2021 Share Posted September 15, 2021 Anyway, we should get back to bikes !! Rodger Freeth was a man I admired from back in the day. He was my Physics tutor in 197? Was always interesting. It did seem slightly weird seeing him racing. He was never spectacular like Croz, he just put his head down and got on with it. He certainly stirred up the natives when he turned up with this !! 2 Quote Link to post Share on other sites
Steve Pope 243 Posted September 15, 2021 Share Posted September 15, 2021 Anyone interested in flat head R71 / Ural / Chang Jiang Gasket etc could pm me. Quote Link to post Share on other sites
jim s 34 Posted September 15, 2021 Share Posted September 15, 2021 Rodger was a real gentleman - i recall going to a midweek test day at Baypark and noticed his van and small entourage in the pits with him out on the track on his (1300?) Mcintosh . as i was getting my own bike ready i noticed him looking over everytime he went past the start/finish straight, and his crew (busy giving laptimes etc) would in turn look (glare) at me too... Just as i was about to go out on the track myself Roger pulled in and rode over to me to tell me about a patch of sand in the braking zone at the end of the back straight, then rode back out past his crew and carried on . Very few top level racers at the time would of done that ... 1 1 Quote Link to post Share on other sites
twisty 176 Posted September 16, 2021 Share Posted September 16, 2021 That's impressive ! Almost in Britten territory Quote Link to post Share on other sites
Psyche 633 Posted September 16, 2021 Share Posted September 16, 2021 59 minutes ago, twisty said: Anyway, we should get back to bikes !! Rodger Freeth was a man I admired from back in the day. He was my Physics tutor in 197? Was always interesting. It did seem slightly weird seeing him racing. He was never spectacular like Croz, he just put his head down and got on with it. He certainly stirred up the natives when he turned up with this !! Before his time, aero is where a lot of the improvement in MotoGP is coming from. In Aragon Pecco had better braking and drive out of the corners than MM, they are saying that the aero is keeping more load on the tires. No load- no grip, I wonder what Dr Freeth had in mind with that wing though as it appears it would make the front quite light. Quote Link to post Share on other sites
twisty 176 Posted September 16, 2021 Share Posted September 16, 2021 The rear wing was connected by a linkage so that under braking it became an air brake. The idea with the front was that with the dive on the forks the front wing would also pitch down. It was a clever idea. Apparently it didn't really work. 2 Quote Link to post Share on other sites
jim s 34 Posted September 16, 2021 Share Posted September 16, 2021 surely he would have the cambered surface on the bottom complete with a couple of degrees of negative angle of attack... can you imagine on a tz750 having that starting to lift and then getting (exponentially) more lift... Quote Link to post Share on other sites
twisty 176 Posted September 16, 2021 Share Posted September 16, 2021 I think part of the problem was the bike was unstable cornering. Handling wasn't a strong point on TZ700's at the best of times !! Quote Link to post Share on other sites
erice 732 Posted September 16, 2021 Share Posted September 16, 2021 3 hours ago, twisty said: Jim Boyd used to race the "Lycoming special " at puke when I was a kid https://www.facebook.com/579738785538280/photos/jim-boyd-22-lycoming-special/634105063434985/ Nah, it was a while lot bigger than that ... Rolls-Royce Merlin engine with a 3rd bank of cylinders grafted on 1 side Quote Link to post Share on other sites
jim s 34 Posted September 16, 2021 Share Posted September 16, 2021 "Rolls-Royce Merlin engine with a 3rd bank of cylinders grafted on 1 side" any background info on this? i know there were quite a few merlins floating around in the 60's and 70's ( i even had possession of one for a while) but that would be a tremendous engineering feat... Quote Link to post Share on other sites
erice 732 Posted September 16, 2021 Share Posted September 16, 2021 My understanding is that that is what a typhoon tempest engine was...on walk-about, will dig up more at home.....but a quick search says that typhoon engine was a Napier sabre.....up to 3000 ps monster ..... a 24-cylinder piston engine with sleeved valves. Actually it is better described as two 12-cylinder horizontally opposed engines*, fused together in an ‘H’ cross section, as opposed to its famous ‘competitor’ the V-shaped 12-cylinder Rolls Royce Merlin......perhaps it was a Napier Bentley Quote Link to post Share on other sites
twisty 176 Posted September 16, 2021 Share Posted September 16, 2021 Toys !!! Now THIS is an ENGINE !! Quote Link to post Share on other sites
marinheiro 352 Posted September 16, 2021 Author Share Posted September 16, 2021 6 minutes ago, twisty said: Toys !!! Now THIS is an ENGINE !! like multiple TS3 Commers, the sound is something else speaking of which, how many remember hearing these Quote Link to post Share on other sites
erice 732 Posted September 16, 2021 Share Posted September 16, 2021 1 hour ago, jim s said: "Rolls-Royce Merlin engine with a 3rd bank of cylinders grafted on 1 side" any background info on this? i know there were quite a few merlins floating around in the 60's and 70's ( i even had possession of one for a while) but that would be a tremendous engineering feat... perhaps it was this.................no wrong dates Sunbeam V12 Special The 1917 12 litre, 48-valve, Sunbeam Maori V12 aircraft engine produces 270hp at 2100 rpm. Created in the spirit of Sunbeam's record-breaking post-WW1 cars in 1998 by Wallace McNair of Hamilton, New Zealand, using Sunbeam vintage components. Currently on display at the Omaka Aviation Heritage Centre in Marlborough. https://www.flickr.com/photos/sidm/3295986425 another here https://www.stuff.co.nz/motoring/customs-classics/9666507/Old-land-speed-record-breaker-is-fired-up Quote Link to post Share on other sites
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