Guinness book of records fastest land speed on a bicycle with a two stroke bicycle engine

[LewieBike]

Why hasn't anyone done this yet ?

Actually Augy, (forum member Gone Fishin') took his Sabrina motorized bike to Bonneville Salt Flat back in 2014 and set a world record for a Golden Eagle Bike Engine drive powered 32cc bike engine, of I think was 38 mph over a 3 day period of speed runs. The altitude does have a big effect on 2 strokes. He was pretty happy with that.

Later in 2018 he had a GEBE 47cc/electric combo on Sabrina he was going to try breaking the record for 49 cc/electric mopeds, since it was a new category he probably set a record even if he just moseyed down the course at 50 mph.

 

[LewieBike]

And what your speed record attempt is up against... This YouTuber is from Denmark and he's been trying for the land speed record for a 49 cc Nitromethane powered bike for the last 6 years, He has a machine shop and is well versed in building very high performance, 2 cycle speed record engines..


View: https://www.youtube.com/watch?v=zWqQ_NXEbE8&t=4261s

his latest work just these couple past weeks..


View: https://www.youtube.com/watch?v=kIcb7x7NytQ


View: https://www.youtube.com/watch?v=cqz8dmcNccA

 

[Sidewinder Jerry]

And what your speed record attempt is up against... This YouTuber is from Denmark and he's been trying for the land speed record for a 49 cc Nitromethane powered bike for the last 6 years, He has a machine shop and is well versed in building very high performance, 2 cycle speed record engines..


View: https://www.youtube.com/watch?v=zWqQ_NXEbE8&t=4261s

his latest work just these couple past weeks..


View: https://www.youtube.com/watch?v=kIcb7x7NytQ


View: https://www.youtube.com/watch?v=cqz8dmcNccA

Then there's another aspect too all of this. Wanting to set a land speed record and having the skills/ability to do it is two different things. We know very little about @Yoshi. Even if this forum or any other sponsor was willing to build a bike to set a record; for all we know he might get himself killed due to lack of skill.

 

[Henk50cc]

Modifying a velomobile or recumbent trike with fairings is paramount. deep section rims could help but big problem is the wind.

extremely good idea. I think it might have to be a 2 wheeler tho, so maybe a tri-bike?

 

[cloakedvillain]

Yes on tri bike but that's if we need need rider to pedal. Hell, a third to half hp is realistic short term output for an average young man for a couple minutes. We would need it. Overbiked randonneuring on YouTube has good videos on minimizing losses and maximizing sustainable power output.

Lots of research on ideal tire width and rim profile. Big money in carbon wheels.