Hill climbing!

GoldenMotor.com

Tom from Rubicon

Well-Known Member
Apr 4, 2016
2,864
6,185
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Rubicon, Wisconsin
Howdy,

Wasn't sure where to post this, as I'm new, but here we go!

I've been interested in making a fresh hill climber for hiking/mountain bike/dirt bike trails.

I am chill as a cucumber if I can't go faster than 25mph max speed, as I know with these engines there are limitations and I'm after torque for climbing vs speed.

Base:

*26 inch Steel frame mountain bike with suspension on front fork (I can't machine a rear mount setup to use a Next bike suspension, etc. ATM)
*66 / 80 cc 2 stroke or 49-100cc 4 stroke kit (help me find an affordable kit, please)
*56-60 sprocket rear
*26 inch wheel/tires
*spring chain tensioner mounted to clutch side
*dual break lever
*possible head replacement if any oriented towards torque / climbing power > speed
*ngl bpr7hix spark plug

Help!
*Where to find affordable:
+4 stroke kit or 2 stroke?
+56-60 sprocket and adapter ($30 or less)
+Head built for low end torque and cooling for possible constant hills [unless sprocket takes care of that anyway] ($30 or less)
+What exhaust ($30 or less)

Contemplation station:

*PORTING FOR TORQUE LOW END TORQUE:
+Keep it simple with cleanup or try and round the exhaust and intake or widen exhaust? I'm afraid to raise or lower either.
+Aftermarket carb or just buy jets for the stock carb? (I'll cut extra junk out of/off the nt with a hot knife if the nt is recommended)
*lap the head only a tiny bit? (Sand paper/glass/600 grit)

I'm just looking to make a safe, comfortable, reliable (lol) toy. I will break it in with 44t sprocket not the 60t, by the way, then 60t or 56t is for after break in period when I use it for its purpose.

Thank all of you for your wisdom and call-outs. Feel free to call me an idiot and fix my bad ideas as needed, lol.
Save your money, and search Craigslist and Ebay for a Home - Rokon They have a very strong following, Been making two wheeled mountain goats since 1958.
Tom
 

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