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Fastera
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« on: October 17, 2016, 02:49:36 PM » |
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Has anyone ever built a twin engine Valkyrie? RUss Collins used to race Twin 750s and even built a triple engine drag bike in the 70s. It seems to me that the Valkyrie engine is a perfect candidate to build a flat 12. The trans could be removed from the front engine and a gimler belt used to attach the rear of the front engine to the front of the crankshaft on the rear engine. You would only need the rear trans and all the other ancillary issues. Any thoughts?
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Pete
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« Reply #1 on: October 17, 2016, 02:58:01 PM » |
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Gonna be a long motorcycle with a long wheel base.
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John Schmidt
Member
Posts: 15218
a/k/a Stuffy. '99 I/S Valk Roadsmith Trike
De Pere, WI (Green Bay)
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« Reply #2 on: October 17, 2016, 05:15:25 PM » |
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You would most likely need a separate tranny, not sure the OEM version would take the abuse of two Valk motors. I wonder if even the output shaft on the rear engine could handle what two would put out. Instead of in tandem, I'd be more inclined to stack them with enough separation to allow for remote induction. If I ever win the lotto, I'd love to build one.  |
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Bighead
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« Reply #3 on: October 17, 2016, 05:45:19 PM » |
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My question would be WHY?  |
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1997 Bumble Bee
1999 Interstate (sold)
2016 Wing
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Steel cowboy
Member
Posts: 1284
Moving ahead so life won’t pass me by.
Spring Hill, Fl.
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« Reply #4 on: October 17, 2016, 07:16:59 PM » |
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As a drag bike, using a V8 engine allows more options for increased hp. 2 Valkyrie engines in any configuration would be a massive undertaking that would not yield the increase in power that you are expecting. When you put twin 100 hp outboards on a boat, you don't get 200 hp you get 100 hp with double the torque.  |
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2001 black interstate
2003 Jupiter Orange wing
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DK
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« Reply #5 on: October 18, 2016, 05:15:04 AM » |
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We had a GMC tractor truck on the farm back in the 70's we called the "Buzzing Dozen".
It was two V6 engines coupled together with a power take off sprocket in the center where the crankshafts were joined.
It didn't work very well.
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Machinery has a mysterious soul and a mind of its own.
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John Schmidt
Member
Posts: 15218
a/k/a Stuffy. '99 I/S Valk Roadsmith Trike
De Pere, WI (Green Bay)
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« Reply #6 on: October 18, 2016, 07:32:48 PM » |
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Yeah Steel but just think of the fun of trying to do it. Actually I'd be more inclined to build an oversized trike or maybe a reverse trike. You could work part time as a tow vehicle.  |
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Steel cowboy
Member
Posts: 1284
Moving ahead so life won’t pass me by.
Spring Hill, Fl.
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« Reply #7 on: October 19, 2016, 03:42:17 AM » |
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A trike option is more of my thinking for a Valkyrie mod. Or better yet a mid engine trike with the seat forward of the engine. I'm not retired yet but I've been busy thinking of what to do after retirement and chasing my dreams.  |
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« Last Edit: October 19, 2016, 03:45:41 AM by Steel cowboy »
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2001 black interstate
2003 Jupiter Orange wing
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da prez
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« Reply #8 on: October 19, 2016, 07:51:07 AM » |
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You are not the only one thinking about that. In our street rod club , there was a car set up with two 350 Chevy engines. A link between the two. I have often thought about it. I am still interested.
da prez
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csj
Member
Posts: 992
I used to be a wolfboy, but I'm alright NOOOOOWWWW
Peterborough Ontario Canada
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« Reply #9 on: October 19, 2016, 09:27:12 AM » |
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Instead of two 1.5 litre Honda engines, how about one 3.0 litre Subaru.
All ya gotta do is get it shoe-horned into a bike frame, then get the power
to a rear wheel.
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A guy called me a Ba$tard, I said in my case it's an accident
of birth, in your case you're a self made man.
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falconbrother
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« Reply #10 on: October 19, 2016, 10:29:48 AM » |
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Be easier to just get a Boss Hoss. They ain't all that though. A GSXR will slay a Boss Hoss.
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dago mooserider
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« Reply #12 on: October 19, 2016, 02:58:09 PM » |
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Instead of two 1.5 litre Honda engines, how about one 3.0 litre Subaru.
All ya gotta do is get it shoe-horned into a bike frame, then get the power
to a rear wheel.
I actually talked to a guy here in San Diego that builds subie powered dune buggies about this very thing awhile back. He was interested in trying it. A 2.0 or 2.5 Subaru motor is not a whole lot bigger than our valk engine. 200 horse power easily and 300 with a turbo. But, alas I still want to be married.... |
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98 valk, 2000 valk, 04 gsxr 750, 85 atc250r, 88 trx250r, 97 expedition (it's indestructible!), 12 civic si, 16 acura tlx, 18 f150.
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Fastera
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« Reply #13 on: October 20, 2016, 08:20:02 PM » |
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I like the idea of a subie in a motorcycle, but I think the Flat 12 would be a lot of fun to build. I am not looking at it from a performance stand point as I already drag race a mustang as well as my Valkyrie that has 2 step N2O system.
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BnB Tom
Member
Posts: 1708
Where'd old times go?
Frisco, TX
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« Reply #14 on: October 21, 2016, 04:27:20 AM » |
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If you're gonna go that far you might as well use a BIGGER flat 6 --> Piper Cherokee 235 with an IO 540 airplane engine (my 1st flat 6) . However, it was in my airplane NOT on a stand   |
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« Last Edit: October 21, 2016, 04:42:00 AM by BnB Tom »
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