Engine for my SuperBronc

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pilotchris

Member
#1
#1
I have a vt10 frame that I am obtaining parts for. I plan to use the bike both on and off road. The on road part will just be tooling around town under 40 mph. I have a list of all the Wisconsin DOT requirements and have even found (but have not yet purchased) some 22x11-8 knobbies which are DOT approved radials. I have also found two sources where I can purchase a new Tecumseh 10 hp for around $450. But here is the question for you engine experts...

I am thinking about a new 12 hp or larger Briggs (like the vanguard) if it would fit on my frame, which I can get new for about the same $$$. Has anyone had any experience with the bigger Briggs like these on a bike or kart? I called Briggs and they would not recommend one of there engines for such an application. The main reason I am considering a 12hp (or so) Briggs instead of the 10hp Tecumseh is that I am unsure if it would be good for the Tecumseh to be rolling around at top rpm all the time. Old Heald brochures state that the top speed on the vt-10 (hp) is around 40 mph. I don't want to take 'er on the highway, but I don't want to hold up traffic either. Yet, maybe the new 10hp Tecumseh would be sufficient. Any thoughts? Thanks.
 
wayne

wayne

#3
#3
i got one on a kinda rough S-B if i could a fair price i might pull it then rest
of parts,that would help someguys with there restos?:hack::hack:
 
badtec

badtec

Banned
#5
#5
I've got an HM80 in my photos that I'd be willing to part with. It's got under an hour on it. The tank and carb (non-adjustable) have never had gas in them. Check it out. Scott.
 
badtec

badtec

Banned
#7
#7
By the way, I think that there's a kit out there that makes the carb adjustable. Does anyone know about this? Scott.
 
P

pilotchris

Member
#8
#8
Thanks for your input guys. I think I will stick with the HM100. Probably be a lot less hassle than trying to get a briggs to match up correctly.
 
badtec

badtec

Banned
#10
#10
The HM80 is an HM100, with a smaller bore. I've heard that the HM100's will rattle your teeth out. Anyway, if interested, I could save you some money. I've already modded the throttle for a mini bike, or go kart, removed the governer and internals, cleaned every bit of oil out of it with q-tips and paper towels. New head gasket, new side cover gasket. Ready to roll. I took the adjustable carb and gas tank off of it to put on my brand new HM100, which is now modded to somewhere between 17-23hp, so this tank and carb have never had gas in them. Did you happen to look at my pics? Take care. Scott.
 
delray

delray

Well-Known Member
#11
#11
not sure about getting it DOT approve? goodluck on trying too. if you want to try making it little faster you could always change the rear sprocket. with a torque converter it will still have good low end take off and a 10hp tecumseh should do just fine. you also want one with a lighted coil to run your lights and charge your battery.
question i have, can you make it legel to ride on atv trails? last time i look it states that it must be more then three wheels...etc..... in wisconsin
 
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