Chrome Worksman Build Up

DasKapitan · #1 (**permalink**) 10-05-2008, 12:05 AM

Well I've finally received my Worksman from the factory. They're very backed up these days. I've given up on the in frame four stroke now that I've been able to take some measurements. Looks like Happy Time for me. Question for the ones in the know? I have 12 1/8 inches from the top of the bottom bracket to the horizontal tube at the seat post and 11 3/8 vertical from the bracket to the tube. The drawing that's around indicates 11 inches. Spookytooth's website has the same drawing but in their manual they indicate 12 1/2". Anyone think I'll have problems putting a HT & an SB Shift Kit on this bike?

ocscully · #2 (**permalink**) 10-05-2008, 03:26 PM

I'm curious as to why you think there isn't enough room for a frame mounted 4-stroke? based the dimensions you provided and the photos I think you have plenty of room for a frame mounted 4-stroke, assuming we are talking about either the Honda GXH50 or its clone? The Honda Motor is only 10 ins. tall without the Tank. I feel that if your first choice is a frame mounted 4-stroke Honda/clone its still more than possible with the bike you have.

As to your question about the HT/w Shifter Kit, you should have no trouble makein that combo work as well. You will need to purchase the additional adapter BB to make the Shifter Kits 3-piece crankset work on your bike.

ocscully

DasKapitan · #3 (**permalink**) 10-05-2008, 10:27 PM

Oscully - Thanks for the input. I've been adamant in my planning to go 4 stroke. I still would rather pursue the 4 stroke goal. I'll look into it harder

. The GXH50 was my first choice. I'd excluded it because I assumed it was too tall. Right now, if I measure 10" down from the horizontal tube I'm left with about 3 3/4" of horizontal space above the bottom bracket. From what I've read I need about 4 1/2" to mount the GXH50. That engine must be mounted horizontally. There doesn't seem to be a good source for dimensional installation drawings on any of these engines. The engine I've been most trying to theoretically fit is the Robin-Subaru EH035. I like this engine due to its cast iron liner and ability to lubricate in any orientation. Minus its covers it'll barely squeeze into the frame and clear the crank set, I think. Mounting the Subaru in frame with gear reduction will be a bit on the wide side too.

Maybe I should just invest in the Subaru and do what it takes to make it work

. I guess I was looking for a fitment guarantee with the HT and an easy out.

I'm aware that I'll need to convert to a small bottom bracket configuration to run the Cyclone front freewheel.

deacon · #4 (**permalink**) 10-05-2008, 10:34 PM

very nice bike

DasKapitan · #5 (**permalink**) 10-05-2008, 11:19 PM

Deacon - Thank You. It'll be fantastic when all completed. Had to wait 53 days to get the bike after I ordered it. Next is the NuVinci hub on the rear. Problem there is I want to use the Worksman wheel & spokes (11g stainless). Hole in the hub are for 13ga max.

ocscully · #6 (**permalink**) 10-06-2008, 01:23 PM

Below are a couple of photos showing the GXH50 sitting in the frame set I've thrown together for my project. When I was still in the planning stages for this project I too considered the Robin/Subaru 35cc but opted instead for the Honda due to its higher HP & Torque as I'm pushing 250 lbs. And pretty much the only frame mount kits and accesories are based on this motor or its clone. It turned out that I've ended up putting together a totally custom drivetrain for my project rather than buying a kit, so the second consideration ended up being a moot point. The Subaru 35 is slightly smaller than the Honda GXH50 wich is a plus, but there isn't a whole lot available in the way of reduction gearboxs available for the Subaru. There is one 3:1 reduction gearbox available from a supplier of pocket bikke engines and accessories that would fit the Subaru, and there are the gearboxs made for Viza Motors that would work as well. The other area where I felt the Subaru came up short as a frame mount is when you get the tank removed from the bottom of the motor there are only two threaded mounting spots to attach the motor to your mounting plate. I didn't feel this would provide a solid enough mount?

ocscully

DasKapitan · #7 (**permalink**) 10-06-2008, 11:23 PM

Oscully - Your two frame combination and custom drive train is most cool. I'll be watching your build with great interest. Thanks for the Viza information. I was unaware of their gearbox. I've been considering the pocket bike one, Staton's 3.11:1 compact or their 18.75:1. The Viza box might just be the answer. It has nice lower plate for mounting. I've inquired by email to them for dimensional & ratio information.

UncleKudzu · #8 (**permalink**) 10-09-2008, 01:22 PM

DasKapitan, i love that frame! and not just the chrome, but the style of it will no doubt make a sharp looking ride.

what kind of hub is that on front?

UncleKudzu · #9 (**permalink**) 10-09-2008, 01:26 PM

Quote:

Originally Posted by ocscully

Below are a couple of photos showing the GXH50 sitting in the frame set I've thrown together for my project.

oh, man, please keep us posted on this build, ocscully! that frame is looking good.

DasKapitan · #10 (**permalink**) 10-09-2008, 10:11 PM

UncleKudzo - Thanks I wanted to go Industrial on my new bike. The front drum brake hub is from Worksman The Worksman Cycles Factory Direct Store Industrial Tricycles, Industrial Bicycles, Recreational Adult Tricycles and more I ordered it as an option on mine. I'm not sure whether they make it themselves or not. No marking on it. They do make their own rims.

Ocscully - Viza Motors was a dead end, fancy website, no gearbox product now or is any anticipated. Chinese crap with NO factory support. Back to the drawing board.