What HP/size are your motors?

[Easy Rider]

I'm 175lbs
5.8hp 50cc Morini 2 cycle motor with a Pipelyne Expansion Chamber.
Right now I have it set-up for the track so top speed is around 35mph with a 56 tooth King's sprocket.
With my 47 tooth sprocket it was hitting low to mid 40's.

 

[s_beaudry]

Push trailer with a 6.5 horsepower B&S engine....

Dare I say, too much power and torque for me!

 

[ZnsaneRyder]

Another vote for 6.5HP here.

You can never have too much power..................

 

[mark2yahu]

I'm running a 25cc Robin-Subaru on my 26" comfort bike. It tops out at 25 mph. Once at 30. I don't want to or need to go faster than 20 mph.
When I do a desert run with lots of wind, I put on the 35cc Robin-Subaru. Both are GEBE systems. They're more long-distance runners than sprinters; they can go all day.

 

[NssOne]

Awesome, thanks again for the more replies. I'm thinking of leaning towards a 6.5hp motor myself. Since this will be a trike and not a bike, I think it can handle it.

 

[ZnsaneRyder]

Awesome, thanks again for the more replies. I'm thinking of leaning towards a 6.5hp motor myself. Since this will be a trike and not a bike, I think it can handle it.

It will handle it, but beware of the torque! My brother was riding a 6.5HP trike I built a friend, and he flew off the back from a dead stop wheelie because he gave it too much gas! LOL

The 196cc 6.5s are a good deal, even cheaper than the 50cc clones, and you get more cc's for your money.

 

[Vishnu Tensleep]

Hua Sheng 1.5HP (rated) 49 cc with Grubee gearbox and 50T rear gear mounted on Trek mountain bike. Fueled I bet it weighs 45+ pounds. I weigh about 205. On the flats my bike tops out around 30 which is plenty fast for me, and it needs some pedaling on the hills of Seattle. I rode it up about a 11-12% grade pedaling standing up and going 15 mph. I wouldn't want a less powerful motor in Seattle, but if I lived in a flat place I'd think it was very adequately powered and geared.

 

[ZnsaneRyder]

Hua Sheng 1.5HP (rated) 49 cc with Grubee gearbox and 50T rear gear mounted on Trek mountain bike. Fueled I bet it weighs 45+ pounds. I weigh about 205. On the flats my bike tops out around 30 which is plenty fast for me, and it needs some pedaling on the hills of Seattle. I rode it up about a 11-12% grade pedaling standing up and going 15 mph. I wouldn't want a less powerful motor in Seattle, but if I lived in a flat place I'd think it was very adequately powered and geared.

Even in FL you have to climb hills sometimes. Some roads near lakes have VERY steep inclines. Sometimes even a bridge over a road is steep.

My engine can pull me up a hill from a dead stop, but it's a lot of wear on my clutch and belt, so I always pedal-assist to take off from a stop, or start on a hill. Once rolling, it will climb ANY hill.

I like hill-climbing power, but want to explore other options besides my heavy engine trailer+mountain bike. Would that 50cc HuaSheng do good on hills powering a 20" boys bike with a 150lb rider with a 30lb backpack? (approx 180lbs)

 

[kawasaki999]

46cc gp-460 tuned pipe, 5+hp, 55+ mph, 150+ mpg.

 

[astring]

Awesome, thanks again for the more replies. I'm thinking of leaning towards a 6.5hp motor myself. Since this will be a trike and not a bike, I think it can handle it.

That may be too much. Look into that Honda GX50. But I could be wrong.