Wildguzzi.com
General Category => General Discussion => Topic started by: Rough Edge racing on July 25, 2016, 07:34:13 AM
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The dual 650 Triumph engine land speed racing bike I've been building is nearly finished. Built from a pile of parts ,many cannibalized from Suzuki and Harley....Two 1956 Triumph 650 engines that will make about 65 HP each@7300 ...Harley 5 speed trans, clutch and electric starter. Custom made frame ,ZR rated radial tires...The exhaust is just for looks, I just started fabricating the real pipes.
1350 CC gas push rod records are from 150-172 MPH at the various tracks...
Here I'm demonstrating the electric start feature. The front engine left cylinder fires 5 degrees before the left rear cylinder so it's like a 1300cc Triumph so to speak... Most LSR bikes and all vintage LSR bikes require a hand held remote starter...I want the rider to be able to push a button, just like a street bike, :wink: The engine have compression...
https://www.youtube.com/watch?v=vNbs--dBGr4 (https://www.youtube.com/watch?v=vNbs--dBGr4)
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Very very cool! :cool:
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It's a wonderful experience in the flesh! :thumb:
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Very nice, but you scared me right at the end when your smile disappeared suddenly. :laugh:
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Very nice, but you scared me right at the end when your smile disappeared suddenly. :laugh:
My wife shot the video and said it appeared I took a knife in the back at the end of the video....We did about 6 takes because we got distracted by laughing..Might have caused a nervous tic or I'm really strange........... :grin:
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Please Sir; I want More :grin:
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(https://c1.staticflickr.com/9/8715/28124520941_f6019ce0d4_c.jpg)
Home built offset sprocket
(https://c1.staticflickr.com/9/8815/27932283530_63d996d1e8_z.jpg)
Building the primary drive using modified Triumph and Harley parts
(https://c2.staticflickr.com/8/7034/27037008236_8604258e67_z.jpg)
Aligning the parts....
(https://c2.staticflickr.com/8/7664/26727798944_bd267e63a2_c.jpg)
What the air sees....
(https://c1.staticflickr.com/9/8789/27598034923_12181365e6.jpg)
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Wow, some amazing fabricating skills went into that,,, beauty!
Kelly
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Very cool project!
How do you keep all your primary chains tight? It must rattle like crazy if they don't have some chain guides or something :grin:
More pictures please! :grin: Always nice to see the ideas and solutions that's going in to a build like this!
What kind of speeds are you aiming at with the bike?
-Ulrik
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https://www.youtube.com/watch?v=GPvf05ai5H8
https://www.youtube.com/watch?v=zw3BXgInpqc
good job .
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Looks like some serious fun. :thumb:
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Mr. Rough Edge racing,
Thankyou very much, that was great :thumb: :thumb:
"Aligning the parts" I'll bet that was.............str essful :grin:
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Jim , what kind of internal components are you installing ? I'm a bit out of the loop on Triumphs these days . Running Hepolite pistons , maybe old JoMo cam profiles , or something more modern . What about primary balance , 70% range maybe ? Connecting rods , the OEM rods were pretty good , but sustained 7300 RPM's might strain them . Valve sizes , guides ? Supposedly the engines in The Gyronaut were producing 70 HP apiece , but Leppan had a good size budget .
Dusty
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Amazing bit of work!
Just curious -- why primary chain rather than belts?
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I dips me lid!
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Dusty, it's Tony,lol....The engines have nitrided stock 1960's cranks, MAP forged steel connecting rods, 10.5 forged piston with a tight quench, Kibblewhile valves and beehive springs, Smith bros steel push rods, Web camshafts, mild head reworking, Mikuni 34 MM flatslide carbs...Leppan's engines were 750's on alcohol...For his best runs they ran on 80 percent nitromethane and made about 100 HP each. My engines are a bit conservative for reliability ...
I chose chains because I understand them and they cost a lot less than belts and custom pulleys...The second naked bike in LSR history to break 200 mph was a dual engine Triumph in 1970. My chain drive is a very similar design to that bike...There will be a chain guard as required by the rules
I discussed the bikes with Kyle of LowBrow Customs... Being a bike shop his bike is also advertisement and a show machine and looks it . My goal was a machine built primarily with hand held tools and an old lathe by a retired electrician in a typical home shop There were no plans other than mental pictures..
The actual cost of parts and engine machine work is about 15,000 bucks. My rider pays for 90 percent, I provide all the free labor... :grin:
A few years back we bought the 85 Guzzi California to build it into a 160 mph naked frame LSR bike...There are several running that fast....But my rider persuaded me to build a two engine Triumph powered bike....There's an attraction to these antique lumps...
(https://c1.staticflickr.com/9/8665/27921434170_d58869cb0f_z.jpg)
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What a proud papa... :weiner:
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What a proud papa... :weiner:
Yeah, twins :grin: The 50's engine cases are pretty much the same as when the engine was introduced in 1938 as a 25 hp 500 cc twin...And in 1983 when Triumph ceased production the head and internal parts used the same 1930's technology... Just like the wide spaced valves and deep hemi chamber on Guzzis , Ducati bevel twins and pre Evo Harleys...
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I don't know how you can get anything done without being able to spit on the floor and walls.
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Are you sure it isn't Jim ? :laugh: Sad part , I know it is Tony , may be overwhelmed by the sight of a home built Triumph powered ground shaker :bow:
Thanks for the specs , and the chain primary makes sense on this type of bike , being capable of handling high power in a fairly compact package . Not like this bike is gonna do touring duty :laugh:
Dusty
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Are the two engines set up identically or does the rear have different fuel requirements? This is a great thread, I hope you can keep it updated! :thumb:
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Are the two engines set up identically or does the rear have different fuel requirements? This is a great thread, I hope you can keep it updated! :weiner:
The rear engine has .0005 inch more cylinder to piston clearance than the front....The rear possibly having a different fueling requirement is an interesting question... ...The basic tuning will be similar to my successful single 650 Triumph LSR bike. The guys who ran these combos in their 50's-60's heyday say very little, same for the very few running them now... I'm literally on my own with tuning and design...Back to the fueling, perhaps the "concealed" rear engine might want to be jetted a touch richer for it's cooling effect...it's all a guess...