100cc Boxer Twin Cylinder Engine - it only needs is a jackshaft

[Fabian]

Now this is something SickBikeParts should look at; adopting it as their next generation Jackshaft kit and engine combo and offering the Engine Monitoring Unit as an optional extra.

http://www.troybuiltmodels.com/items/RCSSV100TWIN-H.html

Fabian

 

[SimpleSimon]

Fabian, for a guy who claims to be concerned with police harassment and excessive regulation of motorized bicycles, you certainly seem to enjoy advocating flaunting the existing laws and inviting yet more disastrous regulation upon others.

Almost every legal jurisdiction regulates gas-assisted bicycles to an engine displacement of 50 cc or less, and a top speed typically around 20 mph. Not too mention, your typical bike frame is not built for the stresses that large an engine can impose, and frankly, speeds in excess of 30 mph really aren't terribly smart on a bicycle.

What use is it?

 

[Fabian]

S.S

Your reply to my post requires a simple explanation, that's grounded in physics and backed up by pictorial evidence , though only a load of pine, but i've carried a good 65 kilos (145 lbs) behind the bike.
A 48cc engine is inadequate, a 66cc engine is inadequate and a 100cc engine would only just be reasonable power with a fully loaded trailer.

I'm on the record for stating that i don't want excessive horsepower or speed (30 miles an hour is more than enough), but have compelling reasons for requiring a high torque engine.

Considering i live in an area surrounded by steep hills and considering i'm always hauling weight (lots of it) my needs for a large capacity engine with loads of low rpm torque, using an exhaust system of low noise are completely justified.

When someone makes this kind of engine available, i'll buy it to bridge the gap to my requirements.
Anyway, the boxer design is an inherently smooth running engine - something we all desperately need in the motored bicycle world, but until then i'll take anything that improves on the clunky, rattly, filthy, grimy, goo seeping engine that we are all living with.

Fabian

 

[Gh0stRider]

Now this is something SickBikeParts should look at; adopting it as their next generation Jackshaft kit and engine combo and offering the Engine Monitoring Unit as an optional extra.

Fabian

You sure you're not a marketing guy? First it was fuel injected 120cc billet crankcase inducted engines for Rich, and now boxer twin engines with "Engine Monitoring Unit" for Pablo? (also known as EMU, but not to be confused with PIG, which is a Programmable Injection Gizmo)

....When someone makes this kind of engine available, i'll buy it to bridge the gap to my requirements.
Anyway, the boxer design is an inherently smooth running engine - something we all desperately need in the motored bicycle world, but until then i'll take anything that improves on the clunky, rattly, filthy, grimy, goo seeping engine that we are all living with.

Fabian

Yes, we know that you're on the edge of your seat waving your credit card.

Did you lose your license or is there some other reason why you don't just buy a small motorcycle. I'm sure that a boxer twin R series BMW could tow a trailer with a couple hundred pounds of wood.

And if you can't drive a MC, then there are other alternatives to those generic clamp on engines. I've been considering a rack mounted four stroke myself. If you want to keep a ringadinnnggggggg 2 stroke, some kits will work with the Mitsubishi or Tanaka 2 smokes.

 

[give me vtec]

if you need torque... build one of these.

it shouldn't be any more illegal than a bike possessing that motor you posted, and its a lot simpler to build/maintain. It has more torque and power than you will ever need to pull that trailer and it will be a TON more reliable in the end.

 

[pedalless]

Fabian there is a electric bicyle i saw on the endless sphere forum towing a school bus
it had a crystallite rear hub motor also has a range of 200km this might be an option. This member is doctorbass he used old batteries from power packs like used for drills and stuff he also sell these cheaply on this Endless Sphere forum. Might be worth thinking about this way i ordered an electric setup myself as its very stealthy and the petrol bikes are illegal in Australia.

 

[Tanaka40]

That trailer is made with plywood. It must weight at least 30kg dry and even more loaded. Try shedding some kilos of the trailer with fiberglass composits over foam . It would be lighter and stronger than the current plywood.
I would also consider a "booster engine" for when you carry heavier loads like the rack mount Gh0stRider mentioned. That way you can still remain legal and only use the extra power when you need it. Good luck and keep watching for the local law enforcement.

 

[wheelbender6]

I'd like to find a 50cc version of that boxer motor and build a BMW replica.
I'd put my Schnauzer in the side car. A motorized bike for the fadderland.

 

[SimpleSimon]

I'd like to find a 50cc version of that boxer motor and build a BMW replica.
I'd put my Schnauzer in the side car. A motorized bike for the fadderland.

Hahaha!

Your Schnauzer would freakin' love it! My last dog was a mini-schnauzer named Mallory. That dog was affectionately known as "the tractor" - my wife would take her for "walks" by getting on her bike holding Mallory's lead (she wore a chest harness lead outdoors) and let the dog tow her around the neighborhood. Mallory would get a wild hair and start to run, Julie would be yelling at her too slow down and hitting the brakes on the bike.

Me? I'd be falling down laughing.

 

[Fabian]

vtec, your engine option is a logical one.
Unfortunately, in my state, (and the way things work on the ground) it's a non option.
A friend of mine is a police officer and we were talking about motorised engine kits for bicycles.
His view as an officer on the ground: if it looks like a motorbike, i'll treat it like a motorbike - no if's or but's.

Having poo poo pipes or noisy exhaust systems or physically large 4-stroke engine kits attracts way too much attention, worse still are rack mounted engines.
That's the beauty about the 2-stroke engine kits - they are physically small.
There is a guy who bought a 4-stroke engine kit from the same retailer i've bought my 2-stroke kit and he has nothing but trouble with the police, because of it's physical engine size - he gets told that the engine looks to big to be legal.
I guess that's the reason why this particular retailer can't move 4-stroke kits from the shop floor.

and to Gh0st,

I will happily buy a 120cc single cylinder 2-stroke (that will work with a shift kit) if it's made available before someone makes a shift kit conversion for the 100cc boxer engine.

Reality dictates that neither the 120cc engine or the 100cc boxer engine will be made available for motorised bicycle engine kits.
In saying, i'll just have to put up with an under powered 66cc 2-stroke engine.

Fabian