best motor application on the tight worksman frame

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HollywoodHooligan

HollywoodHooligan

New Member
Apr 15, 2012
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Los Angeles
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.
 
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culvercityclassic

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Sep 27, 2009
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Culver City, Ca
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.
 
halfevil333

halfevil333

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May 18, 2010
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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....
 
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Tinsmith

Well-Known Member
May 15, 2009
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Maryland
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
 
fx-2

fx-2

New Member
Oct 7, 2011
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Tucson Arizona
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
 

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HollywoodHooligan

HollywoodHooligan

New Member
Apr 15, 2012
69
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Los Angeles
fx-2 said:
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
Click to expand...
that is a clean looking motor! is that a grubee?
 
fx-2

fx-2

New Member
Oct 7, 2011
125
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Tucson Arizona
HollywoodHooligan said:
that iis a nice lookin bike! what kind of fabricating did you do? did you make the tank?
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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
 
brett7777

brett7777

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Aug 19, 2011
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Auckland, New Zealand
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.
 

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HollywoodHooligan

HollywoodHooligan

New Member
Apr 15, 2012
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Los Angeles
brett7777 said:
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.
Click to expand...
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

brett7777

New Member
Aug 19, 2011
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Auckland, New Zealand
HollywoodHooligan said:
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
Click to expand...
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.
 
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brett7777

brett7777

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Aug 19, 2011
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Auckland, New Zealand
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
 
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