Anyone think it's possible to join 2 V-Twins and make a V4? Seems like an interesting way to power a small RWD roadster. Plenty of torque, lightish, and just leave the hood off for cooling.
Anyone think it's possible to join 2 V-Twins and make a V4? Seems like an interesting way to power a small RWD roadster. Plenty of torque, lightish, and just leave the hood off for cooling.
you forgot unreliable. There's better motors that already exist for that purpose.
it exists though.
Honda VFR?
Matt hay has a 170 hp Honda v4 motorcycle engine in a Lola champcar
You mean like the loosely LS based V4 in the Motus bikes? Mast Motorsports developed the engine.
Here is the guy to ask ,
At Home with Allen Millyard | Genius Motorcycle Engineer
Or for torque just get a goldwing engine
Someone has made wish for air-cooled V4 to pushing small and sports driving automobile?
Look no further, ZAZ has answer.
I never hear about people playing with the Honda ST1100 and ST1300 engines. Besides not having reverse they seem like they should be good fun to play with. And they're already shaft drive.
Yamaha VMax should also work pretty well in a car, they're pretty torquey by the numbers. They always seemed kind of bonkers.
HD tried a V4 already. It never made it.
I belive it's in the HD museum in town.
I believe the aftermarket has reverse kits for HD engines.
ShawnG made me go looking for this article I read about the HD V4 effort previously; https://ultimatemotorcycling.com/2016/09/19/harley-davidsons-project-nova-look-might/
A V4 wth Honda smoothness and sound, in a chassis that's more like the XR1200 (or other standard like a Suzuki GS or Honda CB750) sounds like an interesting machine had it ever happened.
In reply to pres589 (djronnebaum) :
Sadly, it never would have flown with the HD faithful customers.
The XR1200 wasn't a "real Harley" becase it was quick, could turn and stop well. The same people that say a 1200 Sportster is a "girly bike", nevermind that it's one of the fastest things they make.
They could build really cool bikes if they would just tell the "bretheren" to get stuffed.
So to support your insanity i think it's a great idea but probably will be harder then it seems. Looking at the HD crankshaft the shafts are multipiece. The front side uses a tapered friction fit and the drive side is splined. I'm not sure you could drive the tappered shaft with the output of the front motor with any reliability. Since the shafts are 3 piece you maybe could make a custom front and rear shaft section to allow what you want to do. Or just make a new crankcase that allows for 4 pistons to go up and down at the same time.
Probably an easier way is to just drive a trans input with 2 engines with 2 primary belts.
Now talking insane multi motor things I made the mistake of checking FBM for "snowmobile engine" and have found several 3 cyl motors for ~$300 each. That's a dangerous amount of power for way to cheap.
ShawnG said:HD tried a V4 already. It never made it.
HD barely got their fans to accept EFI.
In reply to Mr_Asa :
Every Harley-Davidson since 2007 has had Fuel Injection. Not sure what you mean by that comment.
My 2010 Sportster is the most reliable motorcycle I've ever owned or even known about. It's not fair to say they aren't reliable as the AMF years and the current gen are polar opposites
The XR1200 was ahead of it's time - Harley time that is. Don't look now, but Harley's starting to make some interesting motorcycles again.
I've seriously looked at V4s for BEC application. The Aprilia one is pretty sweet, but I don't feel adventurous enough to go with an Italian sourced motor. I've heard that the V-max may have a weak transmission and/or clutch, but that's entirely hearsay.
It's a shame that the VFR1200 is pretty rare, and chocked full of electronics that one would have to reconcile, because otherwise it would make a great BEC donor.
Now talking insane multi motor things I made the mistake of checking FBM for "snowmobile engine" and have found several 3 cyl motors for ~$300 each. That's a dangerous amount of power for way to cheap.
What's FBM?
FSP_ZX2 said:In reply to Mr_Asa :
Every Harley-Davidson since 2007 has had Fuel Injection. Not sure what you mean by that comment.
I mean I remember before 2007? I can remember uncles and cousins, and all sorts of forums where people were bitching endlessly about EFI on their bikes.
I also mean that I know that there are dozens of versions of this kit out there.
By and large, Harley owners are cavemen. There are always exceptions, but generally they are the most resistant to change of any hobbyist.
Kreb (Forum Supporter) said:Now talking insane multi motor things I made the mistake of checking FBM for "snowmobile engine" and have found several 3 cyl motors for ~$300 each. That's a dangerous amount of power for way to cheap.
What's FBM?
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nocones said:So to support your insanity i think it's a great idea but probably will be harder then it seems. Looking at the HD crankshaft the shafts are multipiece. The front side uses a tapered friction fit and the drive side is splined. I'm not sure you could drive the tappered shaft with the output of the front motor with any reliability. Since the shafts are 3 piece you maybe could make a custom front and rear shaft section to allow what you want to do. Or just make a new crankcase that allows for 4 pistons to go up and down at the same time.
Probably an easier way is to just drive a trans input with 2 engines with 2 primary belts.
Now talking insane multi motor things I made the mistake of checking FBM for "snowmobile engine" and have found several 3 cyl motors for ~$300 each. That's a dangerous amount of power for way to cheap.
That's the type of info I needed, thank you.
My idea was centered around being able to put couple of old motors together on the cheap. Making/modifing a flywheel seemed the hard part.
In reply to Kreb (Forum Supporter) :
the aprilia V4 is used in the griip formula car. V faces forward and a driveshaft connects an output sprocket adapter to a diff.
I remember seeing a crazy Unlimited class pulling lawn tractor that had 4 Harley V-Twins daisy-chained together somehow to essentially make a V8. It was wild.
Gearheadotaku (Forum Supporter) said:nocones said:So to support your insanity i think it's a great idea but probably will be harder then it seems. Looking at the HD crankshaft the shafts are multipiece. The front side uses a tapered friction fit and the drive side is splined. I'm not sure you could drive the tappered shaft with the output of the front motor with any reliability. Since the shafts are 3 piece you maybe could make a custom front and rear shaft section to allow what you want to do. Or just make a new crankcase that allows for 4 pistons to go up and down at the same time.
Probably an easier way is to just drive a trans input with 2 engines with 2 primary belts.
Now talking insane multi motor things I made the mistake of checking FBM for "snowmobile engine" and have found several 3 cyl motors for ~$300 each. That's a dangerous amount of power for way to cheap.
That's the type of info I needed, thank you.
My idea was centered around being able to put couple of old motors together on the cheap. Making/modifing a flywheel seemed the hard part.
Find a parts sled and you can get the drive and driven clutch and driveshaft. Find the right chain case and you get reverse.
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