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New Revolution Max 1250 Engine

19K views 43 replies 15 participants last post by  streetrodracer  
#1 ·

The engine that should have been the next follow on engine to the Revolution engine in the V Rod - V V T 6 Speed lighter, more compact, 150 Hp and where does the MoCo put it ? An ADV Bike - Oh well maybe they'll create a new power cruiser and/or naked bike for us with it later -

Let The Fireworks begin !!! Comments ? Suggestions ??
 
#44 ·
That's funny right there - I knew it was something familiar from a long, long time ago and then there it is - The Creamsicle. Great observation. The name has just gotta stick - " Oh you bought a new Creamsicle " or better yet " Oh you bought a new Creamcycle " :LOL: Glad I didn't buy one, you did real good - just get the black one everyone I didn't even know it was available yet - (y):cool:
 
#43 ·
Thanks for confirming my choice to avoid riding the orange n white creamsicle. Lol.


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#39 ·
Yes I'm still working on the 1250 got pretty much all the parts & tools now just waiting for the right down time for the bike to do the job, maybe when our summer shows up in another month when it rains everyday and its 90 degrees, 90 % humidity here in FL ( Our winter for riding ), then I'll pull it down and apart. - it would be interesting to get a " Revolution Max " 1250 engine and see what it would take to get it to physically fit a V Rod, I can only imagine a lot of work plus the interfacing and integration of the ECU and electronics. Daunting task I'm sure. But the engine is the logical follow on to our original Revolution engine. Might be better to wait and see it H-D creates a new cruiser with it first, see how reliable it is. With the current economic outlook everything's going the wrong direction for the US and H-D so it might be a long wait - like maybe the next administration or beyond but that's just a guess. A guy might be able to get one from a crashed Pan America and see what fits that'd be fun ! Or just mod the PA frame to be a power cruiser that would be easier 😎
 
#37 ·
I guess a lot of us Turbo Vrod guys with the Trask putting down a very consistent 160 plus HP w/110 torque can’t get too excited over a reported 150. But, as most of you agree it seems, HD is finally moving into the 21st century!
 
#32 ·
Looks like it may come close to fitting with the 60 degree, rear mount etc. but just imagine all the B/S to get it to work - ECM, wiring, fuel system oil & cooling hoses, etc. Yea, a lot of work for sure - I think I'll stick with building a new Revo for myself got all the tools and parts just need head gaskets and H-D never gives engines to anyone anyway -😥 😅
 
#40 ·
Just the right amount of ugly for me.

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#28 ·
I know I am late to this conversation. I just looked at Harleys new efforts. I am pleased. They listened and responded. I did not see or over looked if anyone noticed the are going to put the engine on a cruiser. And it looks bad ass. I mean 6 speed. No valve adjustments. The 1250 lives on. If they build that cruiser. I will look at trading seriously. Congrats to Harley. It cant be easy trying all these new projects. Live wire etc. They never said a word about the 1250 until recently. They have answered us.
Rob
 
#26 ·
My friend had a 1100 Honda Shadow, what a POS it couldn't keep up with my Triumph 900 Triple on the highway - and I had my wife on the back ! Yes, they'll run forever but if forever is that damn slow I'll take faster and blows up in two years - except my Triumph 900 Triple still runs perfect, after 24 years. This is the difference between depressing and inspiring - I wish I hadn't bought it To I'm keeping it forever - You can't easily measure the soul contained in a motorcycle, but I'm going to toss out the idea that the Triumphs and the V Rod ( and others ) have Soul in Spades, but some other brands ? NOT SO MUCH.
 
#25 ·
jugheadny - yes I agree the engine may have been intended for use in other bikes that were cancelled but I believe this engine was designed primarily for the Pan America ADV bike from it's inception. I don't see 150Hp and 94 Ft/Lbs Torque in a M/C designed to go off road so yes, it should be in a primarily on road bike IMHO. That engine in a V Rod would pull 165 Mph + all day long guaranteed. That engine in a big heavy H-D Touring bike up against the Challenger ? ? I don't think so too short a stroke - Torque not low enough in the Rpm range, and Max Hp at an Rpm that's too high - the big twins do the job just fine, they just need to be water cooled. You don't want a road race style engine in a Touring bike, that's the definition of frustrating but maybe an ADV bike ridden aggressively - but It does need to be in a power cruiser for sure, period. So where's it at ? The perfect engine waiting for a motorcycle ? Only H-D could get this that F'kd up. Right engine wrong motorcycle. And I mean that in a supportive, humble I love H-D kinda way. I really do -
 
#21 ·
Теперь, когда все успокоились после дебюта Harley-Davidson Pan America 1250 и Pan America 1250 Special 2021 года , давайте поближе познакомимся с абсолютно новым двигателем Revolution Max 1250, которым оснащены два новых мотоцикла ADV от The Motor Company. . Не волнуйтесь - мы делаем это просто. Кроме того, у нас есть множество вырезанных фотографий, чтобы удовлетворить ваше любопытство.
 
#18 ·
Yes Stefan_AL those Boxer engines last forever so that's a great example - thanks, hopefully H-D's coating quality is as good as BMW's - it will have to be if the engines going to rev to 9500 Rpm compared to the Boxer engine which is a longer stroke and more torque oriented - and not as much Rpm. Guess we'll see how well they do with it - all I can say from my off road experience is owners better keep the air filter clean because dust & dirt really destroys that coating and cylinder and you can't hone scratches out if it does. Better for street bikes with clean air being sucked in most of the time, I suspect the Pan America ADV bike will spend most of it's time on the road and lesser off road but a fewer # of owners may reverse that and ride more off road so they'll need to keep a well oiled air filter - sounds like it's got a cleanable one installed from the H-D factory so that's a good move on their part.
 
#15 ·
At the end of the day ( or the decade ) the history of reliability for these new Revolution Max engines will be the true measure of their merit and the vindication of their somewhat doubtful at this point cylinder and piston ring engineering - you can get another 35 Hp out of a V Rod Revolution 1250 with not a lot of actual machining - yes it's still heavy but for the average guy ? With an ADV bike ? Probably not a useful end user of the " New Technology " to get it to this Hp level. Yes I like new technology, yes this is the follow up to our 1250cc Revolution engine that we've been talking about for 5 years but let me know if you think ANYONE can use 150 Hp off road OR 150 Hp on road with an ADV bike with ADV tires. Sorry, I don't see it. This is a perfect Revolution replacement engine, it belongs on a dedicated STREET bike, not an On/Off road compromise bike. I've jumped 250 Lb 400 cc 4 stroke bikes 85' + You will never, ever use 150 Hp off road, unless maybe you're running the Dakar Rally, and that's less than .0001% of the riders on the planet, maybe. Right engine, maybe, wrong bike for sure. I rest my case. Put it in a power cruiser H-D with iron cylinder liners and we'll talk.
 
#11 ·
That's funnny Ceigenburger ! :LOL: So looks like they confused two separate statements - and left something out -

1) "The oil pump is designed to pull vacuum in the crankcase, which can further reduce internal engine friction because"
Add - of the reduction of the crank and balancers etc. running thru an oil bath which absorbs power.

2) " lighter piston ring pressure is required" Add - because we don't want regular tension rings to wear the Nickesil coating off the aluminum cylinder and we're hoping to "minimize combustion blow-by.” Add - because with this system if there is significant blow by it might send oil pressure through the roof in a unfortunate circumstance of bootstrapping the oil pump.

Just trying to help navigate thru as you say marketing B/S created by non gear head type people for gear head type people. It's the least I can do - :rolleyes::confused:

[/QUOTE]
 
#10 ·
There are two balancers to smooth out the motor. The primary balancer is a chain-driven design inside the crankcase. Its job is to smooth out the vibration created by the connecting rods, crankpins, and pistons. It also lessens side-to-side imbalance than can come with offset cylinders. A second balancer sits between the cams and ahead of the cylinder head to reduce whatever vibrations get past the primary balancer.
 
#8 ·
  • “The oil pump is designed to pull vacuum in the crankcase, which can further reduce internal engine friction because lighter piston ring pressure is required to minimize combustion blow-by.”

  • So.... to me this sounds like marketing bullshit. A vacuum in the crankcase with combustion pressures in the cylinders will reduce blow by?? If I remember physics correctly... pressure wants to go from high to low- or did Covid change this too?
 
#12 ·
  • “The oil pump is designed to pull vacuum in the crankcase, which can further reduce internal engine friction because lighter piston ring pressure is required to minimize combustion blow-by.”

  • So.... to me this sounds like marketing bullshit. A vacuum in the crankcase with combustion pressures in the cylinders will reduce blow by?? If I remember physics correctly... pressure wants to go from high to low- or did Covid change this too?
It actually can reduce blowby by pulling the rings down to the lands at higher rpm. At high rpms the rings can float and the positive seal between the ring and piston land is compromised allowing compression to be lost past the rings. One of the things missing in the v rod is one way breather valves that promote slight negative pressure in the case, which will do pretty much the same thing or at least help. Real solution is to mechanically pump the case to negative pressure be it a special add on pump or in this claimed case part of the oil pump. The second bonus is a case that is under slight vac , the piston down stroke won't have as much air to hit and slow it down . Those two functions of ring control and lack of case pressure add hp.
Ron
 
#3 ·
Yea, I was put off by the " Nickasil " exploded wire deposit cylinder liners as well - although they were fairly durable in dirt bikes they had no tolerance for dust or dirt inhalation and of course that happens so normally a shorter life and that's in a two stroke with oil constantly in the gas/injected into the cylinder for lubrication - plus no real re-build ability without somehow installing an iron cylinder liner into an over bored cylinder if enough wall material or expensive replacement of the entire cylinder with a new one - and since most will last thru the warranty period guess who'll pay for that !? Will it pass the 500 Hour Dusseldorf test ? 200,000 mile V Rod actual mileage test ? I doubt it. Maybe it's not designed to last look at all the repair $ H-D never made with the V Rod ! I'd like to read / hear about other 4 stroke engines that use these type of liners and their reliability - anyone got ant info ? I think the Chevy Vega was bare aluminum not coated but you see what they say about the rings ? Low tension so no need for a ring compression tool, that's to keep ring wear of the cylinder liner coating down from excessive ring tension and drag. Hope H-D has fully tested this design. Guess you could always overbore the cylinder .025" then under size the piston to get the iron liner in there so it's back down to an 1130cc engine ? 💩😫 Hey more members for 1130cc.com !! (y):cool:
 
#17 ·
... I'd like to read / hear about other 4 stroke engines that use these type of liners and their reliability - anyone got ant info ? ...
Hello streetrodracer,
as far as I know, the BMW boxer engines for example use NiCaSil- coating since the early 1980's.
And they are extremely reliable.

Also the newest member of the boxer engines uses this coating, see here in the 2nd paragraph: