Planet Minis

nikbrewer · 09-11-2007, 08:16 PM

what s the biggest engine i cn fir in a hard tail with out hitting the fender, or worse, the front tire. lifan 125? or 140?

Z · 09-11-2007, 08:32 PM

You have life insurance? I'd run a Honda motor with an 88cc kit as 55mph is plenty for a non-suspended hardtail. Plus, if you keep it all honda, it actually will have some resale value. Pop in a Chinky engine and plan on the bike not holding value worth a stink.

to answer your question, I'd stick with an engine with a 69mm tall cylinder or shorter, which excludes the GPX engines.

egmike · 09-11-2007, 08:44 PM

I sugguest the same, I ran my 107cc engine which has 69mm tall cylinder and it worked great. I then threw in a 120cc w/78mm tall cylinder and the front wheel hit the head alot. I had delrin bushings in my forks also so they were tight, not slopply at all.

symp · 09-12-2007, 04:47 AM

dont forget youll need to go semi-auto unless you want to sacrifice front or back brakes

nikbrewer · 09-12-2007, 05:04 AM

i plan on using a k2 with a foot brake, and no using the back brake lever. This frame is also in rough condition, so i am not worried about resale. so a lifan 110 then?

mikev · 09-12-2007, 08:31 AM

My hardtail has a CT70 motor with an 88 kit and it's just about as fast as I wanna go with no rear suspension.

nikbrewer · 09-12-2007, 08:34 AM

well, a lifan 90 cc then? i just want to by an engine and stick in it, since i have no control or coil, ect

trizzbizzle · 09-13-2007, 09:22 AM

thats a nice ride you got there jean. very clean

mikev · 09-13-2007, 09:26 AM

LOVE the whitewall look on hardtails.

nikbrewer · 09-13-2007, 09:36 AM

where does someone buy whitewall tires?

reynolds_brad · 09-13-2007, 09:48 AM

Quote:

Originally Posted by nikbrewer

where does someone buy whitewall tires?

seen a lot of them on scoorter supply web sites.

DAX MATT · 09-13-2007, 03:27 PM

Quote:

Originally Posted by racing jean

140cc, a one day trip to paris from ghent, but the z50a didn't drive to paris, an other monkey did.

how many inches have gone into the headtube of those 2 bikes ? im stretchin the head tube on mine and dont want to over do it,the blue one looks spot on at the legnth its at

cheers matt

Z50King · 09-13-2007, 03:41 PM

Quote:

Originally Posted by racing jean

want another one?

it maybe not bigger, but maybe stronger.. (16hp)

is that yours? is there a thread on it?

JohnnyB · 09-14-2007, 06:54 PM

Quote:

Originally Posted by racing jean

Right there is some

shi# !!!!

Is that what I think it is ???
So I guess if you can't find hd springs for the front end , just bolt on a steering damper ??

nikbrewer · 09-14-2007, 07:09 PM

actually thats a great idea, since it offers adjustable hydralic dampening, something out forks have none of, unless you count the resistance of the grease?

OKCIS · 09-15-2007, 09:19 AM

Talk to Matt up at Cycle1 here in OKC he can probably get you the whitewall tires you want that guy can pretty much get you anything you want for a mini.

09-11-2007, 08:16 PM	#1 (permalink)
nikbrewer 1st Gear Member Join Date: Aug 2007 Posts: 176	biggest engine in a hard tail? what s the biggest engine i cn fir in a hard tail with out hitting the fender, or worse, the front tire. lifan 125? or 140?

09-11-2007, 08:32 PM	#2 (permalink)
Z 5th Gear Member Join Date: Sep 2003 Location: KANSAS Posts: 8,540	Re: biggest engine in a hard tail? You have life insurance? I'd run a Honda motor with an 88cc kit as 55mph is plenty for a non-suspended hardtail. Plus, if you keep it all honda, it actually will have some resale value. Pop in a Chinky engine and plan on the bike not holding value worth a stink. to answer your question, I'd stick with an engine with a 69mm tall cylinder or shorter, which excludes the GPX engines.

09-11-2007, 08:44 PM	#3 (permalink)
egmike PM Newbie Join Date: Sep 2006 Location: Calgary, AB Posts: 22	Re: biggest engine in a hard tail? I sugguest the same, I ran my 107cc engine which has 69mm tall cylinder and it worked great. I then threw in a 120cc w/78mm tall cylinder and the front wheel hit the head alot. I had delrin bushings in my forks also so they were tight, not slopply at all.

09-12-2007, 04:47 AM	#4 (permalink)
symp 1st Gear Member Join Date: Jun 2006 Posts: 206	Re: biggest engine in a hard tail? dont forget youll need to go semi-auto unless you want to sacrifice front or back brakes

09-12-2007, 05:04 AM	#5 (permalink)
nikbrewer 1st Gear Member Join Date: Aug 2007 Posts: 176	Re: biggest engine in a hard tail? i plan on using a k2 with a foot brake, and no using the back brake lever. This frame is also in rough condition, so i am not worried about resale. so a lifan 110 then?

09-12-2007, 08:31 AM	#6 (permalink)
mikev 2nd Gear Member Join Date: Nov 2005 Location: Livermore, CA Posts: 614	Re: biggest engine in a hard tail? My hardtail has a CT70 motor with an 88 kit and it's just about as fast as I wanna go with no rear suspension.

09-12-2007, 08:34 AM	#7 (permalink)
nikbrewer 1st Gear Member Join Date: Aug 2007 Posts: 176	Re: biggest engine in a hard tail? well, a lifan 90 cc then? i just want to by an engine and stick in it, since i have no control or coil, ect

09-13-2007, 09:22 AM	#8 (permalink)
trizzbizzle 2nd Gear Member Join Date: May 2007 Posts: 328	Re: biggest engine in a hard tail? thats a nice ride you got there jean. very clean

09-13-2007, 09:26 AM	#9 (permalink)
mikev 2nd Gear Member Join Date: Nov 2005 Location: Livermore, CA Posts: 614	Re: biggest engine in a hard tail? LOVE the whitewall look on hardtails.

09-13-2007, 09:36 AM	#10 (permalink)
nikbrewer 1st Gear Member Join Date: Aug 2007 Posts: 176	Re: biggest engine in a hard tail? where does someone buy whitewall tires?

09-14-2007, 07:09 PM	#15 (permalink)
nikbrewer 1st Gear Member Join Date: Aug 2007 Posts: 176	Re: biggest engine in a hard tail? actually thats a great idea, since it offers adjustable hydralic dampening, something out forks have none of, unless you count the resistance of the grease?

09-15-2007, 09:19 AM	#16 (permalink)
OKCIS PM Newbie Join Date: Jan 2007 Location: Oklahoma City, OK Posts: 81 My Mood:	Re: biggest engine in a hard tail? Talk to Matt up at Cycle1 here in OKC he can probably get you the whitewall tires you want that guy can pretty much get you anything you want for a mini.

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