Landracing Forum
Bonneville Salt Flats Discussion => Build Diaries => Topic started by: Ellwood on November 13, 2009, 04:44:26 PM
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My bikes are not streamlined land speed style bikes, but I race on the flying kilometer on ice here in Sweden ( class 3B). The black bike is a 500cc adapted Godden speedway engine, with double reed valve inlets into the crankcase. The single reedvalve outlet goes up the silver pipe, which gives a nice flow ( but really ought to be an intercooler), all around the saddle, then through the throttlebody with indirect injection. The spikey tyres slow the speeds down by 20%, but its fun anyway.
2009 record 111.34 kmh (69 mph)
2010 record 151.14 kmh (94 mph)
my website is http://www.freewebs.com/ellwoodhybrid/.
(http://i173.photobucket.com/albums/w80/tanjawictoriaellwoood/EllwoodHybrid500cc.jpg)
Speedweekend 2009
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/Hybridandstartmotor.jpg)
Line-up at Speedweekend 2010
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/flyingkview.jpg)
Flying Kilometer View 2010 (by Photo4Fun)
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/DSC_01961.jpg)
2010 clipons have replaced straightbars, and static compression raised to 14:1 The goal for 2011 is 200 kmh = 125 mph
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/DSC_02141.jpg)
2010 exhaust rewelded, and new cam chain fitted
I`m building a 1300cc version, but its becoming a long term project. Its got triple reed valve inlets, and one reed outlet leading via boost tank inbuilt in seat unit up to the intercooler, then to throttlebody with indirect injection leading to a rotary cross valve. The boost pressure is low. The engine can run on most fuels, but runs best on methanol.
(http://i173.photobucket.com/albums/w80/tanjawictoriaellwoood/EllwoodBigBlock1300ccsingle.jpg)
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/Ellwood%20Hybrid/EllwoodBigBlocklhs.jpg)
(http://i173.photobucket.com/albums/w80/tanjawictoriaellwoood/1300okt002.jpg)
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/Ellwood%20Hybrid/Ellwood1300rhs.jpg)
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/Ellwood%20Hybrid/Ellwood1300lhs.jpg)
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I'm not sure how any of that works -- but WOW!
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Hi Stan, you can see some pretty good explanation how it works from the Kneesliders site.
http://thekneeslider.com/archives/2009/02/03/ellwood-hybrid-single-cylinder-reed-valve-intercooled-4-stroke-engine/
Regards Ellwood
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Pretty cool.
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It must get cold when riding those things. Really cold. You guys are tough.
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Very nice John - good luck!
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Reed valve crankcase boosted 4 stroke rotary valve engine LSR project. WOW That's exiting! I'd like to know more about your project and the engine. If you could lift this topic with some updates and tech, it sure will raise interest! How do you lube the cylinder for instance?
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Reed valve crankcase boosted 4 stroke rotary valve engine LSR project. WOW That's exiting! I'd like to know more about your project and the engine. If you could lift this topic with some updates and tech, it sure will raise interest! How do you lube the cylinder for instance?
Hi Charlie101, the cylinder is lubricated by 2 stroke oil which is pumped into the crank.
If you zoom to the the top of this page you see my website link on crankcase supercharging.
Regards, Ellwood
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very cool Elwood. I'm over in Bergen. If your ever over this way give me a shout. You have any plans for visiting Bonneville?
Hans
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latest progress on the Ellwood Big Block 1300cc.
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/godjul2010x.jpg)
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/godjul2010.jpg)
Merry Christmas 2010 and a Happy New Year racing season.
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Congratulations, a friend and I have looked at making a KTM motor in the same way. :cheers: The most recent production version of that idea is at this link: http://www.shindaiwa.com/usa/en/technology_2/c4/index.php
They also have an animation better explaining the process, cool stuff.
This company makes leaf blowers and other small gas engined portable tools. There is a patent on an airplane drone motor using the same system for more horsepower and less fuel usage than a normal 2 stroke motor. Husqvarna made a 4 stroke out of their 2 stroke bottom end in the 70's (if memory serves correctly), but did not add the idea of running the intake through the crankcase......who knew?
Always fun to see really different ideas crop up in motor designs!
Beautiful workmanship!
Matt G.
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In the late '50s & early "60s, the US Army used small drone aircraft that were manufactured by Fairchild & Radioplane. These had 4-cylinder 2-cycle air- cooled engines made by McCullough. These little engines were nicely made-- 72 horsepower and they weighed only 72 lbs. They used "Schnurle" cylinder scavenging and compressed the air/fuel/oil in the crankcase. I never heard it referred to as "supercharging", but then again, I'm no 2-stroke guy.
Regards, Neil Tucson, AZ
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The whole ice things sounds plain crazy- therefore I love It!
That surely is an unique way to supercharge one, at least a way I haven't seen before. Great build, and would love to see more! :cheers:
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Crazy stuff, thanks for the thread!Q
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Hi, ive just printed a few new books on this crankcase supercharging, exactly how it works and how to adapt/build such an engine. let me know if anyone is interested.
Here is my new landracer rocket sled with a big gas bottle and 150 Bar pressure. also my old Tranny van still holds the record on ice in its class
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/johnandrocketsled.jpg)
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/johnonrocketsled.jpg)
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/Ellwoodsledstarting.jpg)
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/runningsleduptospeed.jpg)
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As a Norweigian/American kid that abused his runner sleds I would say that looks like one fun ride! Crazy but fun!
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(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/Ellwood%20Hybrid/Ellwood%201300cc%20Supermono/1300SupermonoLinkping.jpg)
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/Ellwood%20Hybrid/Ellwood%201300cc%20Supermono/1300SupermonoinLinkping.jpg)
Now the external stuff is almost finished, i must dig deep in someones pocket and buy a forged conrod, steel liner and piston, and a proper clutch
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Have ordered a forged rod and piston now, so 2013 should see the beast starting to life
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/newest1300pic.jpg)
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This creature and it's inventor is indeed special in so many ways. It'll be really interesting to see it on the racetracks the next year. I wish Ellwood all the best!
http://www.ret-monitor.com/articles/2900/against-all-odds/
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Now i gotta decide whether to go for a clutch or hydraulic drive. Since theres no gearbox then the latter may be best. Has anyone any experience of such?
What compression ratio would be best for NitroMethanol for example 10 psi supercharging up to 6000 rpm ?
And what ignition unit should I be looking for thats suitable for NitroM use ?
I have to make a new Crossvalve for the head since i guessed the wrong overlap on the prototype. Material is now ordered for this task.
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Several options are available when going with a hydraulic drive the best option is going with a closed loop hydrostatic type of drive. The people you should talk to are Rexroth or the Parker Hannifin Bent Axis group. With a hydrostatic drive you can have several different control schemes: 1. Fixed displacement pump and fixed displacement motor. This is what I call a hydraulic chain drive. The ratio between the pump and motor displacement is like the ratio of the front sprocket to the rear sprocket on your motorcycle. Speed variation is done by changing the engine speed, 2. Variable displacement pump with a fixed displacement motor or vise versa. This combination will give you a control of the ratio between the pump and motor because the pump volume is variable. Theoretically the ratio should be almost infinite but because of the physical limitations of the pump and motor a good system will give a pretty efficient drive at around 5:1 to 1:1. Most hydrostatic drives are this combination. If you need a wider range of variable speeds then you can go with both a variable displacement pump and a variable displacement motor, this combination will give you almost an infinite amount of ratios.
The closed loop, hydrostatic system requires the least amount of reservoir oil and if you use pressures around 5000 psi and only the very best of motors and pumps, i.e. Rexroth, PH Bent Axis, you may see a system efficiency of around 90%. I you happened to watch the Dakar rally several years ago there was a Yamaha 450 that was two wheel drive and they used components from Rexroth. One more point, as these systems need to operate at high pressures to have good power density they are made from ferrous materials and are not lite weight.
Rex
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Rotary valve head
milling recesses for aluminium bronze inserts
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/rotaryheadmilling_zps745d3b5c.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/rotaryheadmilling_zps745d3b5c.jpg.html)
starting to put in the inserts
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/1300progress2013001_zps65f1325c.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/1300progress2013001_zps65f1325c.jpg.html)
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a new rotary T6 aluminium valve, because the original steel one had wrong overlap. The adapter around it is to attach the belt drive cog.
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/1300progress2013005_zpse8317ff3.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/1300progress2013005_zpse8317ff3.jpg.html)
As regarding the hydraulic drive idea, i have to shelve it, since it will need a lot of cooling, i am told.
busy machining the straight ally bronze inserts for rotary head. a bit of a job since i couldnt scrounge any flat bits, have to mill out from a round bar.
All the ally bronze inserts shall hold cast iron `piston ringlike`sealing rings, and hopefully create a good seal around the nanocoated T6 rotary valve. OK, maybe a bit of pressure can leak out, but this is gonna run on mostly booze at high compressions.
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/1300progress2013003_zpsb18b85a6.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/1300progress2013003_zpsb18b85a6.jpg.html)
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Lathing the rotary head
http://www.youtube.com/watch?v=cuymDR7-Wvc&feature=youtu.be
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Ellwood, :-o my hat is off to you LSR brother ---what a way to explore the "POSSIBILITIES" :cheers: :cheers: :cheers:
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Thankyou Sparky. I have been inspired by Anders Turbine Bike superduper build diary, so hope to keep mine more updated now
Oh I forgot to mention my custom made piston and rod are now ready- Many thanks to CP-Carillo Pistons.
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my old miller lathe is all i have to make everything, it even doubles as a work bench since since i dont have room for one.
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/maj42013001_zps2a4f7bf9.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/maj42013001_zps2a4f7bf9.jpg.html)
now the straight allybronze seal holders are milled, need to cut to length and fasten in head somehow.
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/maj42013002_zps65a5466c.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/maj42013002_zps65a5466c.jpg.html)
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Many thanks to Carillo pistons. the rod is longer than my foot !
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/1300ccpistonandrod_zps8e4acc30.jpeg) (http://s275.photobucket.com/user/ellwoodhybrid/media/1300ccpistonandrod_zps8e4acc30.jpeg.html)
now i need to design a liner.
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now i need to design a liner.
Way to go! :lol:
Want to share a container when our bikes are built, tested thoroughly and ready for the salt?
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Aaaawwsome Anders, that would be so cool, but don`t ya think the bikes would fit in our suitcases?
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Aaaawwsome Anders, that would be so cool, but don`t ya think the bikes would fit in our suitcases?
Well, you know how much tools we use to bring to Speed Week in Orsa. For the Bonneville trip I would like to bring both a lathe and a tabletop mill to do quick fixes in case something breaks. My aluminum casting equipment and ac/dc TIG welder would have to come as well. And some other equally important stuff of course. :-)
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(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/8_zps361cbacb.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/8_zps361cbacb.jpg.html)
just to get some idea of how much is left to do before the engine can run. Could this be the worlds simplest 4 stroke engine - very few moving parts ?
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Many thanks to Westwood Liners UK
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/liner004_zps33eccdf5.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/liner004_zps33eccdf5.jpg.html)
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Hey Elwood
Why don't you use a CVT drive off a big scooter or snowmobile
G
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As regarding the hydraulic drive idea, i have to shelve it, since it will need a lot of cooling, i am told.
Looking great Ellwood, you guys take your projects seriously over that way :0
I keep hearing that hydraulic drives are hard to keep cool but I can't make the maths add up.
Most motors put as much energy into the cooling system as they do to the flywheel and we manage to keep them under control temperature wise.
If a hydraulic drive can run around 90% efficiency that's only 10% that can turn to some other form of energy so it should be manageable.
Cheers
jon
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I`ve decided to dump the hydraulic drive, too much cooling system and no room to have it.
Shall now take the power from both sides of the crank. This may save me from welding the crank when running on Nitro. Had almost decided on splines, but conical ends are easier for me to make, and will allow variator drive. I need to make a mod on the swingarm to allow having a shaft through it, between the swing bolt the back wheel.
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gilmer type belts are very efficient
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Oops, i deleted my engine bits photo higher up the page
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/Ellwood%20Hybrid/Ellwood%201300cc%20Supermono/8_zps361cbacb.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/Ellwood%20Hybrid/Ellwood%201300cc%20Supermono/8_zps361cbacb.jpg.html)
Yes Gilmor belts are cool and quiet, but i must see what width is possible, so may have to opt for a chain.
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Not much to report at the moment, but to keep ya all entertained on the Hybrid engine front, here is a link to Soonerbillz Inside the Grid Hybrid interview.
http://www.soonerbillz.com/page17.php
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So now its time to lighten the piston, not a task i look forward to, because one wrong slip will set me back 300 dollars. Anyway managed to remove 60 grams here, and prepared my buttons for the piston pin. Need to get rid of at least 150 grams more from the CP top fuel piston, which started life weighing 862 grams.
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/oct2013017_zps5a362653.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/oct2013017_zps5a362653.jpg.html)
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Hooray, the piston now finished and weighs 679 grams, now its time to plan balancing the flywheels
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/carillo001_zpsf8bf2e5e.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/carillo001_zpsf8bf2e5e.jpg.html)
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The last few days of 2013, I felt obliged to make some progress on the rotary valve and head-
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/Mobile%20Uploads/rv2012dec002_zps07e5bde7.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/Mobile%20Uploads/rv2012dec002_zps07e5bde7.jpg.html)
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slightly more progress on the rotary valve head. the outer of the rotary valve is to be nanocoated, the exhaust inner to be ceramic coated to spread the heat. Im not sure which treatment has to be done first - anyone know ?
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/Mobile%20Uploads/finishedhead_zpse0e7d3b8.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/Mobile%20Uploads/finishedhead_zpse0e7d3b8.jpg.html)
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Some precision holes, splined shafts and bearings left to fix. Otherwise looking good for start up 2014.
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/Mobile%20Uploads/completeengine2014003_zpse35293b0.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/Mobile%20Uploads/completeengine2014003_zpse35293b0.jpg.html)
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I'm speechless over this build. :-o All I can say is wow and phenomenal work! I am not at all familiar with the motor you are using and my better judgement says it is a custom built 1-off motor. Is this in fact the case? Simply amazing stuff. OK, I'm speechless again. :-)
Scottie
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slightly more progress on the rotary valve head. the outer of the rotary valve is to be nanocoated, the exhaust inner to be ceramic coated to spread the heat. Im not sure which treatment has to be done first - anyone know ?
Why don't you ask the guys who are coating it. They might have an educated opinion
G
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Time to get my brake bench Dyno ready for testing, have made a logger for the computer. This is a water turbine which presses the 1 meter long arm down on a load cell. the weight result multiplied by the bike revs gives the power. no need for fancy calculations.
I swapped a bottle of whisky for this dyno, she was in a very sorry state , but now looking quite good.
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/brakebench003_zps970e3151.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/brakebench003_zps970e3151.jpg.html)
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/brakebench002_zps4be5c52a.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/brakebench002_zps4be5c52a.jpg.html)
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I'll give you two bottles of whiskey for it if you want to double your money! That dyno is probably better than half of the ones they use today, which are just accelerometers which can't give you a steady rpm hp reading. What a great tool for trying all the "what ifs". Also much better for testing longevity of the motor, which is ultra important in Salt flat conditions, i.e. 3 miles or more flat out. Who cares if the reading can't be accurately compared to the other dynos; we only need to know when we improve our motors. And you can use the wastewater to heat your house!
Tom
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my little crankpin is now ready to be sent to hardening. Dont know how many hours ive put into this, but it is probably one of the most vital parts of the engine.
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/crankpin9maj008_zps9013bd07.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/crankpin9maj008_zps9013bd07.jpg.html)
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Keep up the excellent work John! I really want to race you when our bikes are road worthy, might have to look into renting an air strip for the occasion somewhere between Stockholm and Östersund. :-)
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Keep up the excellent work John! I really want to race you when our bikes are road worthy, might have to look into renting an air strip for the occasion somewhere between Stockholm and Östersund. :-)
Keep up the excellent work John! I really want to race you when our bikes are road worthy, might have to look into renting an air strip for the occasion somewhere between Stockholm and Östersund. :-)
Yes Anders, that could be an epic race- Madness versus Insanity. I will take you up on that challenge. The loser provides a real party for both teams. I dont think we need need to waste our money renting an airstrip, the fines would probably cost less if we just race on the E4 motorway. But it could be difficult to decide on what we are gonna compete over :- flying K, flying Mile or how many KM or Mile, i guess each bike has different charachteristics. Mine has no gearbox either, so pulling away from the start line will be tough. You can probably get over 30000 rpm, mine will not go over 7000. It will be torque against rpm ? Befoere we grow up, we can take our bikes to the ultimate challenge in Bonneville, and let them rip. We only live once !- hopefully.
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So today is the Swedish Midsummer party. My aim was to have the aluminium cylinder head finished off by today, so this morning i was down in the garage milling and threading the last water cooling inlet hole. Left to do on the head is buy the JIC AN couplings , and lathe out two slits in the bronze inserts.
The Rotary valve is as good as finished too, apart from the special coatings.
And the crankpin is hardened and ready.
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now the cylinder base spacer is ready
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/basegasket_zps5ddcb3d7.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/basegasket_zps5ddcb3d7.jpg.html)
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liner shortened to size, and assembled in cylinder
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/Ellwood%20Hybrid/Ellwood%201300cc%20Supermono/linershort_zps75725850.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/Ellwood%20Hybrid/Ellwood%201300cc%20Supermono/linershort_zps75725850.jpg.html)
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/Ellwood%20Hybrid/Ellwood%201300cc%20Supermono/linerassembly_zpsbe3a835e.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/Ellwood%20Hybrid/Ellwood%201300cc%20Supermono/linerassembly_zpsbe3a835e.jpg.html)
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in these videos i am not really sure whether i am testing out the brakebench, or the bike. But it was a fun day anyway.
http://youtu.be/24WaY26gvUE
http://youtu.be/aATAip5ccPM
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:cheers: :cheers:
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1300cc bike - the head is finished now, and busy designing the clutch axle
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/1300jan2014005_zps2a20ef3f.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/1300jan2014005_zps2a20ef3f.jpg.html)
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/1300jan2014003_zps2f4de086.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/1300jan2014003_zps2f4de086.jpg.html)
its only a month to go to our Speedweekend on Ice, where i get to try out my new laughing gas system on the 500 bike
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this is the tightest i can get the clutch up to the engine. now to make that splined axle.
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/framesusp002_zps9cac0878.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/framesusp002_zps9cac0878.jpg.html)
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slight progress with AN couplings, and proper spacers on each side of the head.
(http://i275.photobucket.com/albums/jj292/ellwoodhybrid/1300%20an_zpsipulvcgr.jpg) (http://s275.photobucket.com/user/ellwoodhybrid/media/1300%20an_zpsipulvcgr.jpg.html)
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We are following your progress...............Hoping to see you on the salt in 2016 :-) :-) :-)
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Looking good! We missed you at the One Mile race in Färila by the way.