Im going to try and reply to you three guys in this note.

Mywaymfg -I think when my bike is about finished ill take pictures of all the extra parts I have and put them on here if thats not against any rules here on this site. theres a few Simplex things Id like to maybe be able to trade/buy too.

MikeSal- Nope no gear shifter or manual clutch on theis engine. Its the same engine used on a childs atv sold by Wildfire. It is truely a one speed. It must have a cintrifical clutch because its just like a scoot/moped.... you just twist the throttle and away you go!

Kartjockey- Thanks for the complement, I do like your cool old truck! I once owned a 55 Chevy stepside and had a blast fixing it up and yes I wish I still had it.

I test drove the bike with the Chevy pulley on it and at ten mph it just idled nice and slow rpm! I think it will purr at 45 no problem. Didnt go any faster because I still have to mount  fabricated a rear brake bracket and modify the brake linkage too. But there was two issues when testing the Chevy pulley, 1) the belt slipped because the belt I used is just a little to long and I had no more room for adjustment. 2) The centrifical clutch in the engine slipped whenever I gave it gas to take off. I had to give the bike a push off to get moving and then the clutch stopped slipping. Have to do some research to see if I can modify the clutch with stronger springs weights?? I need to research this some. Anyway thats where Its at, at the moment. Ill try and take some pics of what progress that might be interesting. - Tony

Rick I Live in Summerville SC, It is part of Charleston SC. Ill Check out the Coker tires too. Thanks-Tony

Air cleaner is actually one that I cut the back mounting face and mounting bracket off, turned it around and cut an offset hole and made a rubber mounting bracket from a large hose. Offset was to clear the choke lever. the front is the bottom of a stainless hyd. filter canister I cut off then polished and epoxeyed to the filter steel mesh filter element to give it and older look than the cheap stamped tin logo that was on the other side.

Christmas tin

1)gas cap I made but still have to vent and weld in a baffle. Believe it or not but I found a metric equivalent that worked for the threads.
2)Key switch housing i made and installed where the choke knob would be.
3)old Christmas tin I painted striped the outline and put logo on, inside it holds the cdi, starter solenoid, horn relay, regulator.
4)Output motor shaft drive v belt pulley modified to accept a splined shaft and spline lock. from the factory the motor came with a toothed gear.
5)I really enjoyed the pics and updated on this site, I notice a rough frame on ebay today they want 1200 for it but I think thats too high for whats there but all it takes is someone with the a case of the simplex bug and its sold i guess:)  - Tony

Hi guys, been kinda busy lately hope yall doing good. The Whizzer pulley is fifteen" outside diameter. Installed it and with the engine redlining it reached a blistering speed of 25mph. Decided on a small block chevy single grove crank pulley that is 6 7/8 od. Drilled it and the rear hub with three holes and notched the side of the pulley that contacts the spokes. Have to make a spacer that goes in between the pulley and hub and spacer for the axil nut also. Ive taken some pics to show progress and some details that might be of interest. I think after I get the final drive working I next have to work out making the rear brake operational from the left hand brake and install a kick stand of some sort. I down sized some pics so I hope they are not too big or too small to see. One note on the motor I bought that was advertised as fully automatic, well it is because all you have to do is turn the throttle and it goes! .......but......it only one speed or shall I say only first gear. I wasnt counting on that and so now its a game of pulley size and ratios!   

Mike I ordered and just recieved a new Whizzer pulley off of ebay. Ill post its performance after Ive installed it. Just getting the original pulley off without damage is going to take some time.- Thanks

Had about 1 min before I had to go to work for the first test ride so I put my camra phone in my drill press vice to catch it on film. Notice the fred flinstone brakes:) I tried to trim it down so it wont be to long if it is then I guess it wont work.