mud atv powered blaster.

[awdcivic]

So i have a honda recon frame and im wanting to build an ultra light mud atv that i can basically pick up out of a mudhole. Figuring on custom fabbing a fully independent suspension.
Im wondering about custom fabbing a chain to an auxiliary sprocket where i can add two chains for 4x4.
Now to keep things simple if i geared the motor to about the equivalent of a 6 front sprocket and 50 rear sprocket with a top speed of 9 mph in 1st gear and 30 in 6th.
If i were to gear this low do you think the motor would pull 28 or 29.5 inch tires?
I know it doesnt have much power but im thinking if i just gear it low enough it would have no problem in pulling the tires.
Opinions on this?

Also what would i need to do to waterproof the motor? Granted i will vent the carb and the air intake but where can water leak into the submerged blaster motor? im thinking where the clutch cable goes in maybe? I will silicone the magneto cover on and any drain holes as well as the clutch cover and any drain holes, am i missing anything?

 

[bansheedave]

I say do it. But you won't be happy with the outcome. The blaster motor will be a huge dog and you will blow it up trying to make it do a 4 poke job

 

[Awk08]

not sure how a 2 stroke exhaust will react to a snorkel ?
as the exhaust will need plumbed to above mud/water level too.

don't forget the trans vent hose too

 

[awdcivic]

thanks awk i was planning on routing the exhaust up front with the snorkel as well and turning it to the side.
Dave why do you think it wouldnt work? why would i blow it up if i have really low gearing for the tires? just trying to understand why it wouldnt work.

 

[bansheedave]

I am just afraid you won't be able to get the gearing you need. You may end up winding the motor out all the time. But I can be wrong. I am very interested in this, don't get me wrong.

 

[Herpderplol]

I dont think a small two stroke made for racing would be a good engine for a mud quad...

Not trying to burst your bubble, or say you have the wrong idea. I just dont think a blaster motor will work well.

 

[awdcivic]

im thinking im gonna put a 6 or 8 tooth custom sprocket on the blaster motor then go to an aux shaft with 3 sprockets one for the motor and 2 going to the front and back and like a 40 for the driveshafts. that would make 29.5s spin at 11.2 mph or 14.9 with the 8 tooth in 1st gear. idk i think i might try it and see what i can do i think it could work. i got the idea when i had an arctic cat 300 that doesnt have much power but it had a super low gear and in that gear there is nothing that will stop the tires from spinning.

 

[awdcivic]

any other ideas for ultralight engines that i can make into 4x4? i mean if i use a 4 stroke engine ill probably have to use differentials which are not cheap nor light.

 

[jus_me]

A sled motor. an older one..