will a 2hp work with a mini bike

[robin]

hi ime trying to make a mini bikw with a 2hp b&s engin
will it be ok with a 11t and 60t sproket
and is it posible to make one with out a welder?

 

[RobertD]

Sure, anything is possible. Got any sketches yet?

 

[robin]

nah i dont do scetches lol i did a quick drawing on the pc to get the sises

i cut the pises today and taped them in place ime stuck becuse i dont have a wlelder and i if i get some one to weld it i beed to make it out of difrent mettle cus some of the pars i have are zink plated and thay wont touch it i was thinking 22mm copper pipe and fill it up with somthing so it it stronger ime not sure yet is ther a place to pots pics or is it ok if i put them on photo bucked with the link ?

 

[RobertD]

you can just attach them to a message here as well.

 

[robin]

this is mjust some bits of steel i cut taped to gether to get an iderr aboyt size and happy new year it sayd december on the post it is 2007 here lol

 

[RobertD]

Well, you really need to weld to get a solid bike. Are you sure that stuff is zinc plated? Even if so, you can weld it, you just have to be super-safe and not breathe any of the fumes. It can kill you, so it's not something to be unsafe about.

Better to just go and get some mild steel and cut to length, and then get someone to weld it all together for you. Are you in school? Maybe there's a shop teacher that could help.

 

[philip metzner]

robin, that 2h.p. kind of depends on what your going to do with it, and how heavy you are. if you are going to ride on mostly hard, flat surfaces and you use a 12 toth clutch with a 72 toth wheel sprocket then you can have some fun. if your heavyer and you want to ride in soft hilly ground, then you need more motor.--phil

 

[robin]

sory i been a long time to reply lol totaly forgot about the fourm ime going to use a 72teeth with a 11t clutch ime making the frame out of 25mm and 20mm box steel ime getting my frends dad to weld it cheep i want to maby put a battery oon it so i can have lights in the future i want the engine to charge the battery to i duno how yet
on your mini chopper on the step by step thing on the site it says you had took of the governer how is the throttle linked to it i took the governer off mine and tried to wire it up but it dident work if you have some pics i would be very thankfull


Robin

 

[robin]

its just to bits that are zinc plated oh and i need to get some forks

 

[RobertD]

I updated the chopper throttle page with a pic. Thanks for letting me know.

 

[robin]

thanks i was trying to connect the cable direct to the throttle valve

 

[robin]

i just put some black paint on the frame i still ned to get a cluth chain and rear sproket ime thinking 11t------72t or 11t-------60t ive got 10 inch wheels ime going to try to cast new rims or try to get new wheels the berings on my old trike what the wheels are off have worn out the wheel is very woblley i might put sum lights on too just need to make the forks i might put a oil cooler and filter and pump on the engine ime not sure yet i think it would be cool i ill use a windscrine pump and run it from a battery ime not going to do this yet oh a tip i fount if you glue a small magnet to the oil sump plug the one to let the oil out it colects all the crap you all no this ime sure lol

 

[kart62]

Chopper project

Hey your off to a good start! I was intrested in your question regarding the 2 hp engine. First off, yes the engine shold be fine. Be sure you can aquire a clutch to fit the shaft before diving in to deep, alot of earlier briggs 2hp motors had a 1/2 inch pto shaft....hard to find a clutch for! If this is the case, buy a normal 3/4 bore clutch and make a sleeve to go from 1/2 to the 3/4 ( wish you lived here, it would take 5 minutes) Your gearing sounds okay for putting around, but will a 72 tooth rear drag the ground in a turn or straight up for that matter? put a straight pipe on it and get rid of the govenor and factory air cleaner...it should pull better. I have heard that a 4hp carb setup is a very close fit, if you run accross one give it a look, or just ream out the throat of the existing carb and get rid of the choke parts (major restriction) Good luck, keep the pictures coming.

 

[kart62]

throttle idea

Hey when I get home tonight I will post a picture of my throttle setup for you.

 

[RobertD]

I'd never consider ditching the choke parts. Good idea.

 

[robin]

thanks but anything apart from text and advice wont be any hel i live in the uk
and clutch parts and chain is going to cost a boomb ime going to get it on ebay the engine has a 16mm shaft so in english that is 5/8 the berings in the wheels wory me lol i will have to save up the money to get the clutch all i ned to do is make up the forks get chain clutch and rear sproket then i will be riding it
my m8 is trying to get me a car tape player to put on it lol

 

[RobertD]

surely there's a parts house in the UK?

 

[robin]

nah ther isnt realy pepole do make gocarts over here much and most pepole have small gardens so not many if any lawn mower shops so ime going to ebay it
the cheepset i cand find is a clutch and chain on ebay about 35 dolars and a sproket about 10dolars and with postage to the uk its over 80dolars
ime going to use 35 chane btw if any one nows a online shop thats ships to the uk and a clutch chain amc sproket works out to under 80 with shipping plese let me now

 

[philip metzner]

hi, are belts and pulleys more available in U.K. i have seen alot of gokarts and mini's built that way.--phil

 

[robin]

i never thaut about using a belt then thing is the berings in my wheel are so crap that i think the tention neded on a belt would kill them i think ime just going to have to save up