Curtiss V8 Replica

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Lucien Harpress
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Curtiss V8 Replica

#1

Post by Lucien Harpress »

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I was at the Vintage Motorcycle show in Wauseon Ohio this last weekend, and this bike was a bit of a surprise when I saw it. Long story short, Glenn Curtiss, before getting into airplanes, was a motorcycle builder back in the early 1900s. In 1907 he built a V8 motorcycle, basically as a rolling advertisement for his airplane engines. He managed to set a speed record of 137 MPH (remember, in 1907). After various changing of hands, the bike itself ended up in the Smithsonian. There is a replica with a wooden engine at the Curtiss museum in New York, which is what I thought this one was at first. Nope, turns out it's a brand new, 1-to-1 functioning replica.

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It's the brainchild of Dale Stoner. A few years ago I saw a Curtiss 3 cylinder he built (again, from scratch) run down at Barber, so he knows his stuff. Still, seeing him tackle the V8 was totally unexpected. He's a member of the Curtiss museum, and they let him take apart a period motor, in order to 3D scan the parts. That way he could make molds, get parts cast, and then machined down to a usable state. Apart from better oiling, a better u-joint, and other small upgrades, it's as close to an exact replica as possible.

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I've been in love with this bike as long as I've known it's existed, so seeing it up close was super special to me. I've linked my full photo albums below, which includes a pair of videos proving that, it DOES run.

https://imgur.com/a/dale-stoners-curtis ... ca-tCPDZVC

https://imgur.com/a/1907-curtiss-v8-rep ... ng-WX3EgHD
1997 Valkyrie- Light Cutomization, but Too Busy Riding
1980 KZ1300- Bike's Haunted
1976 GL1000 (Yellow)- Behaving Itself Rather Nicely
1974 Velosolex 3800- Better Than Walking
1972 CB750- Learning The Joys of 4 Cable Carbs
1969 CT90- The Most Fun You Can Have on 90ccs.
1965 CA77 Dream- Needs a Full Teardown, but Complete

All advice I give is only valid until an expert corrects me.
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gltriker
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Re: Curtiss V8 Replica

#2

Post by gltriker »

Thank you for sharing, Mike !! tumb2
Cliff ;) )

Keep your eyes and ears open and you'll learn something new, everyday. tumb2

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'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
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julimike54
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Re: Curtiss V8 Replica

#3

Post by julimike54 »

Cool!
1986 GL1200A
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flyin900
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Re: Curtiss V8 Replica

#4

Post by flyin900 »

Quite a feat of engineering for a hobbyist for sure. Are those cylinders in a rounded bunch in front of the riders seat a battery pack or ignition parts electrical array?
Current Bikes:
DISPLAY MODELS:
1966 CL77 - Honda 305cc - Dual purpose - "Gentleman's Scrambler" was a period moniker.
1967 CL175K0 - Low production number with #802 engine serial- winter 2019/2020 full restoration.
1972 CB350F - Baby Four with low mileage - Cosmetic refresh to the next level 2021/2022.
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1978 CB550K - Very original bike with only 7499 Km. from new - light cleanup and refresh done.
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Lucien Harpress
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Re: Curtiss V8 Replica

#5

Post by Lucien Harpress »

Those are old telephone batteries. Non-functional on this bike, but period-correct for the day of the 136 mph run. The bike has a total loss ignition system- a (modern) battery runs the coil in the top box, which connects to the distributor on front. Run out of battery, you run out of spark.

The bike was only designed to do a couple passes, at most. It was mostly a tool to sell engines, of course. The closest "modern" analog would be like the Dodge Tomahawk.
1997 Valkyrie- Light Cutomization, but Too Busy Riding
1980 KZ1300- Bike's Haunted
1976 GL1000 (Yellow)- Behaving Itself Rather Nicely
1974 Velosolex 3800- Better Than Walking
1972 CB750- Learning The Joys of 4 Cable Carbs
1969 CT90- The Most Fun You Can Have on 90ccs.
1965 CA77 Dream- Needs a Full Teardown, but Complete

All advice I give is only valid until an expert corrects me.
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luludog
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Re: Curtiss V8 Replica

#6

Post by luludog »

Impressive. Imagine what it took to design, assemble, test and then run 130+mph! Back in 1907 this must have blown people’s minds.

Thanks for sharing.

*noticed the “brake” assembly on the rear wheel. Wow!
-Ray

1977 GL1000 - http://www.ngwclub.com/forum/viewtopic.php?f=30&t=40398
1975 CB750K5 - stock restoration http://www.ngwclub.com/forum/viewtopic.php?f=13&t=40426
1971 CB175K5 - stock restoration http://www.ngwclub.com/forum/viewtopic. ... 95&start=0
1972 CB350 - resto-mod cafe project http://www.ngwclub.com/forum/viewtopic.php?f=30&t=47429


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