HT "80cc" Horsepower?

[MrLarkins]

How much horsepower does the HT "80cc" actually have? I'm just curious.

[Dan]

I always assumed around 2, but dunno for sure.

[Jemma Hawtrey]

a figure I saw bandied about was 2.2hp - but to be honest the quality is so variable on some of them it could be anything - although I think 5 hp would be pushing it.

There have been 50cc engines with upwards of 6hp - I'd love to make a frame mount with the fantic engine and 6 speed transmission - that would fly..

Jemma xx

[Revorunner]

Originally Posted by Jemma Hawtrey

a figure I saw bandied about was 2.2hp - but to be honest the quality is so variable on some of them it could be anything - although I think 5 hp would be pushing it.

There have been 50cc engines with upwards of 6hp - I'd love to make a frame mount with the fantic engine and 6 speed transmission - that would fly..

Jemma xx

Hi,

I'm new to the fourm,just curious about the six speed transmission you mentioned.Do you have any pics of it or a website that I can get more info of it?

[jasonh]

I think the Morini 50cc motor even comes in a 12hp version

As for the transmission, I'm not familiar with the one Jemma mentioned. However, SickBikeParts sells a kit to use the gears on your bike to drive the motor. See their ad on the left.

[jf30cp]

has 2-3 horsepower....but if you do mods it can go up....although, the motor will only handle 6 horspower max before things start getting broken within the motor

[Revorunner]

Originally Posted by jasonh

I think the Morini 50cc motor even comes in a 12hp version

As for the transmission, I'm not familiar with the one Jemma mentioned. However, SickBikeParts sells a kit to use the gears on your bike to drive the motor. See their ad on the left.

Thanks for the info.

[Dave31]

Hello Revorunner, Welcome to the forum, glad you joined us

[Revorunner]

Originally Posted by fairracing31

Hello Revorunner, Welcome to the forum, glad you joined us

Thanks,

I have been lurking around this fourm for awhile now doing research on building a motorized bike.

Still undecided on what motor to get though.Leaning towards the Honda 50cc.

[Jemma Hawtrey]

Originally Posted by Revorunner

Hi,

I'm new to the fourm,just curious about the six speed transmission you mentioned.Do you have any pics of it or a website that I can get more info of it?

Its not a separate transmission as such. The Fantic TI sportmoped had a completely deranged motor coupled to a 6 speed tranmission in the casing ala the standard motorcycle practice.

However.... this could be made, or at least something similiar could be. The shifter kit that pablo does is a great idea, but all the cassettes for derailliers are for cycling speeds... so you might get several ratios but you are limited to the available ratios that are fairly shallow for a motor vehicle because they are designed for pedalling.

To get a fantic-esque type of performance you would need to make up a cluster that has ratios more suited to an engine application than a pedalled one. A good trick would be a low first and second ratio (in case of emergency cycling) and then a gap to higher ratios that are more motor friendly.

However as compared with the CIF engines the Fantic mill was impressive to say the least. Below 50ccs displacement - 12:1 compression ratio (the CIF are something along the lines of 7:1) and either a 14mm dellorto carb (6.5hp) or a 19mm carb running the motor up to 7.2hp.

The only engine that comes close really is the morini engine that some have used on here and that so far as I know doesnt have an integral transmission.

hope that helped

Jemma xx