best motor application on the tight worksman frame

[HollywoodHooligan]

I am shopping arround for my next motor my quetion is which motor would be the easiest to mount on the tight fit worksman frame I would like to get as much power as possible but am limited to the amount of fabrication I can do as I do not own a welder and live in a small apartment.

 

[culvercityclassic]

I think all the china motors fit the same. A close friend made a motor adapter to place the motor in the right angle, the only draw back was the spark plug was hard to get out. I may be able to help you out if needed.

 

[HollywoodHooligan]

thnx ill let you know

 

[halfevil333]

There should be plenty of automotive shops in your area which could bend and weld for you st a nominal price. And then you could lengthen the wheelbase, and enlarge the down tube loop, thus giving you room for a predator motor....

 

[HollywoodHooligan]

i know thats kind of what im thinking any recomandations?

 

[HollywoodHooligan]

I think all the china motors fit the same. A close friend made a motor adapter to place the motor in the right angle, the only draw back was the spark plug was hard to get out. I may be able to help you out if needed.

couldn't you use an angle plug?

 

[Tinsmith]

HH, have a look at the thread "Worksman/EZM stretch". I go ahold of a 1952 girls schwinn and cut out the curved down section of the bike. Lenghtend the Worksman about 4" and inserted the section of the schwinn. It allowed me to install a 4-stroke EZM set up pretty easily. Silverbear did the same thing last year. He took the schwinn cutout to a welder and told him what he wanted to do and got it done rather inexpensively if I remember correctly. I got my old schwinn for $30, plus I was able to use the nice old chainguard and fenders which look great (I think). Ring up Silverbear, he'll have something to say about it. Good luck, Dan

 

[HollywoodHooligan]

ya i've seen similar threads about using a girl frame im considering i

 

[fx-2]

Just about to finish a worksman build . Yes the china girl fits well with the angle plug head turned . You need a 36 tooth crank sprocket to clear the motor . Lots of room . The Grubee fits the 1 inch frame better than the Jet motors . Dan

 

[fx-2]

HH check the pictures in the albums on my profile page , lots of build picts . Dan

 

[HollywoodHooligan]

Just about to finish a worksman build . Yes the china girl fits well with the angle plug head turned . You need a 36 tooth crank sprocket to clear the motor . Lots of room . The Grubee fits the 1 inch frame better than the Jet motors . Dan

that is a clean looking motor! is that a grubee?

 

[HollywoodHooligan]

HH check the pictures in the albums on my profile page , lots of build picts . Dan

that iis a nice lookin bike! what kind of fabricating did you do? did you make the tank?

 

[fx-2]

that iis a nice lookin bike! what kind of fabricating did you do? did you make the tank?

The tank came from Sportsman Flyer . It wouldn't fit my frame , my frame was built wrong . There was no fabricating to install motor if you use a Grubee . My is a Jet motor it fits larger tube frame , made a spacer for rear mount and welded tabs on for front mount . Dan

 

[HollywoodHooligan]

i am really tempted to get DAX gp50r from thats dax I mean 9hp! seriously?! anyone have any input?

 

[brett7777]

I fitted a China motor to a worksman frame & had quite a bit of messing around. The motor mounts are at the wrong angle & there's not a lotta room for the motor itself.
I had to put in shims to make up for the incorrect angle of the engine mounts. These then later fell out so I had to silicone them in.
The frame is a thinner diameter than the 1" grubee mounts too, so it's sloppy until you put in the shims.
A China motor will be okay if you don't mind heaps of messing about to get it mounted well.

 

[HollywoodHooligan]

I fitted a China motor to a worksman frame & had quite a bit of messing around. The motor mounts are at the wrong angle & there's not a lotta room for the motor itself.
I had to put in shims to make up for the incorrect angle of the engine mounts. These then later fell out so I had to silicone them in.
The frame is a thinner diameter than the 1" grubee mounts too, so it's sloppy until you put in the shims.
A China motor will be okay if you don't mind heaps of messing about to get it mounted well.

wow that is a great looking bike! I plan on welding the motoe in or having someone wed monts of some sort in for me

 

[brett7777]

wow that is a great looking bike! I plan on welding the motoe in or having someone wed monts of some sort in for me

then I think you would need to get the frame downtube extended & given a loop/curve, to give some space for the mounts, as I don't see how welded mounts would fit with the standard frame. There aint a lotta space in there
I was gonna get that kind of frame from Pat at Sportsman Flyer but it took too long as he was busy with the 200cc frames (& has a dayjob) so I gave up waiting.
If you really want power then I guess you could just get him to do you a 200cc frame. I dunno what the current waiting time is.

 

[HollywoodHooligan]

hmmmmmm well ill keep you posted on my progress thanx for all the advice

 

[brett7777]

If you're not too far from Venice Beach then talk to Norm at Venice Motor Bikes, he may be able to do something for you with supplying a motor, & with mounts, he's an absolutely great guy to deal with; I bought my wheelset from him

 

[brett7777]

He handles welding too, I just checked on his site