Predator motor

[Whiskey Rider]

Hello, I'm new to motorized bicycles. I built high performance and racing motors for show cars and hot rods. I've recently been interested in board track racers and purchased a frame and forks from Sportsman. I've been looking at the predator 3 hp motor and an upgrade kit from Sportsman cycles. Has anyone used a predator motor and/or the Sportsman upgrade kit? Can you offer any thoughts or suggestions?
Thank you

 

[curtisfox]

They have been used for quit a few years now, and mini bike, go Kart guys us them a lot. There is some performance parts available also, form AFG, and a few others BMI ............Curt

Affordable Go Karts

Affordable Go Karts

affordablegokarts.com

 

[Venice Motor Bikes]

The 3HP motors don't have anywhere near as many aftermarket parts as the 6.5 HP motors do.

I highly recommend going with a 212cc.Predator.

 

[curtisfox]

Venice is right, but not for me. Not in a big hurry when it comes to motor bikes, back in the 50's when I started, it was always 1hp washing machine motors, the biggest I had back then was 1 1/2hp and it went 25mph. Just old I guess.........Curt

 

[Sidewinder Jerry]

The biggest questions are what are your expectations; what purpose do you want it for and are there legal matters to consider???

 

[Whiskey Rider]

The biggest questions are what are your expectations; what purpose do you want it for and are there legal matters to consider???

I am building this for me, I want to build something that pays tribute to the original boardtrackers.
I want to build an eye catching daily rider. Not too concerned about the legal matters at this time. Just looking for input.

 

[Sidewinder Jerry]

I am building this for me, I want to build something that pays tribute to the original boardtrackers.
I want to build an eye catching daily rider. Not too concerned about the legal matters at this time. Just looking for input.

If you live in the USA laws and regulations can vary from state to state. Some states aren't very strict about enforcing their regulations as long as you fully and completely obey the traffic laws. However, some states are very strict on enforcing their regulations.

The reason I tell you this is past builders have sank a lot of time and money into a build just to discover the police wouldn't allow them to ride on the public roadways.

 

[wrench]

Hello, I'm new to motorized bicycles. I built high performance and racing motors for show cars and hot rods. I've recently been interested in board track racers and purchased a frame and forks from Sportsman. I've been looking at the predator 3 hp motor and an upgrade kit from Sportsman cycles. Has anyone used a predator motor and/or the Sportsman upgrade kit? Can you offer any thoughts or suggestions?
Thank you

I like the Honda 160cc Sportsman uses
Pat got it all figure out, Follow his lead

 

[Tom from Rubicon]

Welcome to the forum WR, for the sake of personal connection and transpariency sign off with your Cristian name as most of the hi-grade builders do. It's a small personal loosely connected club within the forum.
When guys like VMB aka Norm, or Curt, or Jerry. Wrench ? Makes good points too.
I began my Sportsman Flyer journey the last half of 2016 and know everything you don't want to do empirically.

First offering.
Just buy a built bike with your specs from Pat unless this is intended as a hobby build, whch you want to make costly mistakes. (Here I should plant my smiling face.)
Per Curt, a reworked engine from AGK is an option I chose to forgo, having a machine shop.
Last Spring seeking more power from my 79cc Predi, I did the full AGK treatment.
Port, polish, .050" head deck, heavy valve springs, remove governor, and ARC billet flywheel.
Everything else is pretty much stock Flyer from Pat.
At present, I have not proved out my latest carb adjustments. Now you are on board I better get back to work.
Some threads of mine that may be of interest.
(1) 79cc Sportsman Flyer build | Motorized Bicycle Engine Kit Forum (motorbicycling.com)
(1) Bike builders that have machine tools/shops | Motorized Bicycle Engine Kit Forum (motorbicycling.com)
Best regards,
Tom

 

[Venice Motor Bikes]

Another reason to consider the 212cc Predator is that most builders of 3hp bikes quickly realize they need more power... Not just for top speed, but for hill climbing & ease of take off.

Even if you choose not to modify the engine, the 212cc has twice the power at the same price, & the 212 is very adequate without any mods.

 

[Whiskey Rider]

Another reason to consider the 212cc Predator is that most builders of 3hp bikes quickly realize they need more power... Not just for top speed, but for hill climbing & ease of take off.

Even if you choose not to modify the engine, the 212cc has twice the power at the same price, & the 212 is very adequate without any mods.

Thank you, the advice is greatly appreciated.

 

[Tom from Rubicon]

Norm is 100% right as usual. I wish I had gone the 212cc route, there are alot of hilly roads here.

Tom