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+--- Thread: BMW’S NEW R18 BIG BOXER ENGINE (/showthread.php?tid=6775)
BMW’S NEW R18 BIG BOXER ENGINE - GoldOxide_imp - 12-07-2019
[url=https://canadamotoguide.com/2019/12/06/bmws-new-r18-big-boxer-engine/]
More on prototype going production ...
[url=https://canadamotoguide.com/2019/12/06/bmws-new-r18-big-boxer-engine/]BMW’S NEW R18 BIG BOXER ENGINE
I like the intentions of where this air/oil machine is going.
Production is anticipated in Q1-2021.
RE: BMW’S NEW R18 BIG BOXER ENGINE - peterbaron - 12-08-2019
Interesting indeed, thanks for sharing
RE: BMW’S NEW R18 BIG BOXER ENGINE - Houtman_imp - 12-08-2019
That looks like a nice engine.
RE: BMW’S NEW R18 BIG BOXER ENGINE - GoldOxide_imp - 12-08-2019
I think BMW is not only playing homage to their legendary participation in motorcycle sport, but it seems almost to their roots in propelled flight. This perspective appears almost seems like a prop-engine.
RE: BMW’S NEW R18 BIG BOXER ENGINE - LongRanger_imp - 12-08-2019
Thanks for posting. Nice looking lump. I think it's interesting there's no counterbalancer.
RE: BMW’S NEW R18 BIG BOXER ENGINE - peterbaron - 12-08-2019
In most modern automotive engines there is(are) no separate counterbalance shaft(s).
A combined balance module with oil pump, balancer incorporated into one of the cams (as mentioned in this article) or other devices might be used.
![[Image: cb553a84adc5f21ecace23319c39961a.jpg]](https://cb1100forum.net/forum/uploads/imp/201912/cb553a84adc5f21ecace23319c39961a.jpg)
Engine balance/oil pump module
RE: BMW’S NEW R18 BIG BOXER ENGINE - GoldOxide_imp - 12-08-2019
(12-08-2019, 04:30 AM)LongRanger_imp Wrote: Thanks for posting. Nice looking lump. I think it's interesting there's no counterbalancer.
Using modern computer algorithms, I am sure mech-engineers can conger-up old-school-lookin' lumps with high design efficiencies.
Anything to keep the air-cooled technology alive?
- - -
Heh, ... now come to think of it in this "modern" world, one could argue why do we have air-cooled engines dumping heat into your environment (think "environment issue"). One could naively think that the heat should be captured as power - and maybe they would be correct in thinking that.
RE: BMW’S NEW R18 BIG BOXER ENGINE - redbirds_imp - 12-08-2019
Boxer twins have traditionally not used counter-balancers as the motion of the pistons acts as such. My '73 R75 was very smooth without a counter-balancer.
RE: BMW’S NEW R18 BIG BOXER ENGINE - GoldOxide_imp - 12-08-2019
(12-08-2019, 06:44 AM)redbirds_imp Wrote: Boxer twins have traditionally not used counter-balancers as the motion of the pistons acts as such. My '73 R75 was very smooth without a counter-balancer.
... and of course not having the extra fly weight innately improves efficiency.