My New Crazy Ride to come...

[Mike Bean]

OK, here's the deal...

125CC 4 Wheeler Engine with Reverse and Automatic Transmission.

I have managed to acquire a 125CC 4 wheeler engine with all the goodies attached in a trade. I plan on building a new frame to accommodate this engine.

My question is, do you think I can get away with this using the 1" X 1" X 1/8" Steel Square Tubing for the build?

The engine is a bit heavier than the 6.5 Tecumseh and had a lot more power. Does anyone know the horse power rating on these engines? I believe it is a 1984 Suzuki engine.

I plan on using the 1-1/4" rear axle parts to help with the power.

My personal opinion, I feel I can make the frame strong enough with the 1" square tubing...

I have attached a photo of the new power plant!

What do you guys think?

One more thing.. I would also like to ride a full wheelie down the 1/4 mile at the local drag strip.:laughing:

Mike Bean

[altrego30]

Mike
I was working on a similar plan for next year when I get back from my deployment over seas, I am going to use 1-1/4" square tubing with about an 1/8" wall thickness. Of course Im also planing on making it an on and off road type with a full suspension. Put that power to some good use besides on the street, ATV tires with good ground clearance. What I have in mind should look sick.............

[stool-sample]

You can make it work fine with that tubing. Make your frame tighter though. What I mean by that is not to have long pieces of tube for motor mounts and things of that nature. Most definetly use rubber bushings on your mounting areas. This motor wil vibrate more than the Tecumsehs.

[tqm3]

I also think that the 1" tubing should be good. I would streach the wheel base a bit to help with stability, with a gear box that think will have a great deal of speed. My best guess on HP is between 10 and 15....Can't wait to see the finished product, better put 2 wheelie wheels on this one!:cheers: OK, here's the deal...

125CC 4 Wheeler Engine with Reverse and Automatic Transmission.

I have managed to acquire a 125CC 4 wheeler engine with all the goodies attached in a trade. I plan on building a new frame to accommodate this engine.

My question is, do you think I can get away with this using the 1" X 1" X 1/8" Steel Square Tubing for the build?

The engine is a bit heavier than the 6.5 Tecumseh and had a lot more power. Does anyone know the horse power rating on these engines? I believe it is a 1984 Suzuki engine.

I plan on using the 1-1/4" rear axle parts to help with the power.

My personal opinion, I feel I can make the frame strong enough with the 1" square tubing...

I have attached a photo of the new power plant!

What do you guys think?

One more thing.. I would also like to ride a full wheelie down the 1/4 mile at the local drag strip.:laughing:

Mike Bean

[monkey-1]

It will be more than strong enough. As for the horsepower rating, a 125cc Honda is roughtly 9HP.

[Mike Bean]

I was looking over the engine and it has two mount points. One along the rear of the housing and one in front about mid way up.

I think two pieces of steel run across the frame left to right and maybe a center brace will do the trick. I am going to have to build a front mount that is shaped in an upside down "V" shape to reach the front mount.

This engine did not have any rubber mounts from the factory. I wonder if it is really needed?!?! And what would I use so I could get decent vibration dampening without too much movement of the engine?

Mike

[Chevy2ride]

:wave: Hey Mike, Why not use a spring and bolt design? Cup on top & bottom to stabilize the spring but with a bolt through it.The spring & cups will go under the engine block mounting holes and the bolt will go from the bottom up with the nut on top. Just an idea.:dizzy: I've seen generators set up that way to help with the vibration and it works. I'm sure you'll figure it out.:cussing: Aloha from Hawaii.........:me:

[Terry Skinner]

[QUOTE=Mike Bean]
My question is, do you think I can get away with this using the 1" X 1" X 1/8" Steel Square Tubing for the build?

What kind of frame are you going to use?? Are you are going to build a simple ladder frame like your plans?? How far apart are the wheels both wide and long?? What is the wall thickness and diameter of the tubing in the bike you took this motor out of?? How were the motor mounts arranged?? You need to feed us more info. Just for a simple test place 2 4x4's on the floor at the distance the wheel base will be. Place the tubing you want to use on top. Now jump up and down in the middle. If it bends it isn't strong enough.

As a rule of thumb if the motor has 125 cc than it will have 12.5 hp. That is if it is stock.
Hope This Helps…..Terry

[Terry Skinner]

[QUOTE=Mike Bean]OK, here's the deal...

125CC 4 Wheeler Engine with Reverse and Automatic Transmission.[/B]

Are you sure that is a 125?? I have a 125cc that I picked up a while back. It has the horizontal cylinder like the 90's and the 110's. Also a hi/lo shifter and the reverse. What is the serial number off yours. I will look it up at the Honda shop. See what I can find out.
I like yours better than mine. Looks cooler..........Terry

[rednecktech]

Hey Mike I am running a honda 125 engine from a 1985 trx on my stool. The frame is square tube (1" x 1" x .120" wall) The atv engine i am using has a shift pattern of (R-N-SL-1-2-3-4) and it is pretty torquey with kart slicks. the stock gearing for the atv was 13-50, i am currently using 13-35 and the first foward gears (SL, and 1) run out real fast (2-3 seconds.) then i have to shift. i fact i can start in (4). i ordered my 30 tooth driven to ballence out the torque and speed.
also rubber mounts are a good idea, i started with out them and it does run a little ruff. i am currently in the process of tearing it down and rubber insulating the motor and instaling hydrolic brakes.

[BAR-TAB]

Hey mike....Do you remember our conversation the other night??? About riding wheelies?? Ill sent you pics of the foot pegs pretty soon. should only be a few days.

[elvergon]

Hey mike, yeah it will be enough. I´ve seen 3/4 .120 wall in some ATV´s with up to 350cc. However the frame has a lot of reinforcements.

Will it be a barstool? or a kart?

Good luck with it, it looks similar to the one im using on my kart...wups I forgot! I got a lot to update.

As far as I´ve seen on the 350cc ATV it appears that it has no rubber bushings. However I don´t think that having some will hurt ;)

[sweav]

Mike, I hope your going to post lots of pics, and DO go with the rubber mounts for motor.

Redneck, let me know how the 39 tooth works!

[Mike Bean]

[quote=Mike Bean]OK, here's the deal...

125CC 4 Wheeler Engine with Reverse and Automatic Transmission.[/b]

Are you sure that is a 125?? I have a 125cc that I picked up a while back. It has the horizontal cylinder like the 90's and the 110's. Also a hi/lo shifter and the reverse. What is the serial number off yours. I will look it up at the Honda shop. See what I can find out.
I like yours better than mine. Looks cooler..........Terry

Terry,

It is actually a Suzuki engine. I tried to find some numbers on the engine, but there are none. Kind of weird. The engine has pretty good compression, I put some gas in the cylinder and pulled it over and it fired a few times. So I tried it again and then it kicked back and tipped on the right side and broke my spark plug boot off.. :rofl: So now I have to get one of those threaded spark plug ends.

Thanks for the help anyways!!!

Mike

[Mike Bean]

Hey mike, yeah it will be enough. I´ve seen 3/4 .120 wall in some ATV´s with up to 350cc. However the frame has a lot of reinforcements.

Will it be a barstool? or a kart?

Good luck with it, it looks similar to the one im using on my kart...wups I forgot! I got a lot to update.

As far as I´ve seen on the 350cc ATV it appears that it has no rubber bushings. However I don´t think that having some will hurt ;)

Elvergon,

This build is going to be a barstool. I wanted a barstool that could run with the 4 wheelers in our neighborhood. They will be surprised when I take off on them.

Mike

[Mike Bean]

Mike, I hope your going to post lots of pics, and DO go with the rubber mounts for motor.

Redneck, let me know how the 39 tooth works!

Hey Sweav,

Did you use rubber mounts on your engine? If so, what did you use to make them? I am going to start doing some fab work on the frame and mounts this weekend to see how to setup the engine. I have some good ideas and I think it will be pretty easy to do.

I will take lots of photos and post them as the build progresses...

Mike

[Mike Bean]

Quick question...

The engine did not have the throttle cable on it. Is anyone familiar with the thumb throttles the Honda three wheelers used?

I have a Mikuni Carb on the engine and I was hoping I could use a thumb throttle off of an old three wheeler. Inside the carb it has a small space where the cable end sets in to hold it. I have seen some photos online where the ball on the end looks too large.

Mike

[Mike Bean]

Hey Mike I am running a honda 125 engine from a 1985 trx on my stool. The frame is square tube (1" x 1" x .120" wall) The atv engine i am using has a shift pattern of (R-N-SL-1-2-3-4) and it is pretty torquey with kart slicks. the stock gearing for the atv was 13-50, i am currently using 13-35 and the first foward gears (SL, and 1) run out real fast (2-3 seconds.) then i have to shift. i fact i can start in (4). i ordered my 30 tooth driven to ballence out the torque and speed.
also rubber mounts are a good idea, i started with out them and it does run a little ruff. i am currently in the process of tearing it down and rubber insulating the motor and instaling hydrolic brakes.

Rednecktech,

From the sounds of it, you could go with even a smaller rear sprocket (more speed :thumb: ) Maybe I will start out in the mid twenties. Anyone know what rear sprocket some of the 3 and 4 wheelers used?

Being the BSR is much lighter, you could go with less gear ratio and step up on the speed in all gears.

Mike

[sweav]

Mike, no I didn't use rubber mounts on mie. It doesn't vibrate bad when your moving but when your setting still it vibrates the hell out of you. On the carb., what I did was I cut the ball of the end and made a form (basicaly drilled a hole in a piece of wood) and formed a new end out of solder that fit into the slide for needle. I couldn't find anything else thar would work the way I wanted it to.

[sweav]

You really cant go off of a stock 3 or 4 wheeler rear sprocket. You have alot taller tire on them. I would start out low 30's high 20's, I still have the 41 on mine and I need to gear mine up so it doesn't wind out so quick.

[Mike Bean]

Mike, no I didn't use rubber mounts on mie. It doesn't vibrate bad when your moving but when your setting still it vibrates the hell out of you. On the carb., what I did was I cut the ball of the end and made a form (basicaly drilled a hole in a piece of wood) and formed a new end out of solder that fit into the slide for needle. I couldn't find anything else thar would work the way I wanted it to.

Sweav,

Great idea on how to make an end for a cable. Did you drill the hold in the wood then place the end of the cable in the hole and then melt the solder into the hole? Did you heat the end of the cable first to help the melted solder stick better?

What did you use to melt the solder? And did you use the large solder or the fine stuff for wires?

Thanks

Mike

[sweav]

I used a torch and heated the cable then used some flux to clean and stuck the end of the cable in and melted the solder in with the torch, you've got to work the cable a little bit to make sure the solder gets all the way down in the hole. I used some heavy acid core solder. Got the idea from watching my grandfather make fishing wheights.

Mike if your wandering I stil have my barstool, a guy won the bid but I haven't gotten anything from him yet, not going to push it, hopefuly I won't and this friday I can totaly get it off of ebay. I'll need some good ideas on the mini car though. Building a highboy for parades. Was going to ride the bsr but after my accident with it, I don't know. I've got to go in for knee surgery this thurs. and hoefully that's it. My wife freaked out last week because I was in the backyard doing donuts with it. Pain pills work great!

[Mike Bean]

Thanks for the info Sweav!

I will do a few practice ends with some bicycle cable first.

It's good to hear you still have the BSR. You need to keep it. In the past I used to sell my toys to buy new toys and there were always times I wished I did not sell some of them and just waited till I had more money.

Nothing wrong with riding donuts in the back yard. If it is was me I would have had a beer in one hand while spinning in circles..

So I will be able to try my donut skills when I get this new engine in. The 6.5HP did not have enough power because of the tread on the tires.

Mike

[altrego30]

Mike
I had the same issue with my cable end on my thumb throttle, I just got a cable and ground down the end till if fit, a little at a time. I still need to find a different spring, the tension on it kills my thumb after a while.

[Mike Bean]

Mike
I had the same issue with my cable end on my thumb throttle, I just got a cable and ground down the end till if fit, a little at a time. I still need to find a different spring, the tension on it kills my thumb after a while.

Altrego,

What engine are you running? If you have a Tecumseh Power Sport, I had the same problem with the throttle return spring being to tight, so I put one end in the vise and pulled on the other until I put enough stretch into it so the throttle was easy...

Mike

[altrego30]

Altrego,

What engine are you running? If you have a Tecumseh Power Sport, I had the same problem with the throttle return spring being to tight, so I put one end in the vise and pulled on the other until I put enough stretch into it so the throttle was easy...

Mike

Hopefully I will have time to try that this weekend, Yes its the power sport. I will put some strech on it see what happens.

[Turbo_Stoolie]

Any updates on this? I'm new to the site but not new to making "toys" very scary fast!

If you can guess from the name, I plan to do one with a "hair dryer" !

[Ubel_Zum_End]

As a rule of thumb if the motor has 125 cc than it will have 12.5 hp. That is if it is stock.
Hope This Helps…..Terry

Are you sure of that? Because I have two Honda 5.5HP GX160's and they have 163CC's, is there something I'm missing?

Joseph

[Terry Skinner]

Are you sure of that? Because I have two Honda 5.5HP GX160's and they have 163CC's, is there something I'm missing?

Joseph

I am talking about motorcycle or quad engines. The GX 160 is detuned for long life. On the other hand if you get into the 125cc road racer that is highly tuned it will produce 25 or 30 HP and only last two or three races. It is just a rule of thumb........Terry

[barstool_newb]

so how is this project going? is it work in progress or a DNF as i would like to put my trx 250r's "spare" engine that has ruffly 45hp with a 6 speed tranny just cant figure out were to put the radiator and if it is to much power for a BSR

[Mike Bean]

Well the project is basically finished. I just need time to build some wheelie bars before I get it all painted.

I have a new rear sprocket (22 Tooth) I still need to put on and test run it for speed...It all boils down to time which I have not had a lot of...and some motivation also... :laughing:

Mike Bean

[barstool_newb]

thats good to hear cant wait to see some videos or pictures.

mike i dont know if you have ever thought about modifying the plans to one of your BSR plans and bringing a off-road stool besides the too you sell. sounds like a cool idea but im not sure if people would buy then. but i sure would. or could it be easier to modify one of the stools people buy from you and build it that way?

[c.schulz]

Here is one that I saw on EBAY not to long a go. 2 stroke with manual trans.

Chris
http://img.photobucket.com/albums/v347/cschulz/0edd_3.jpg
http://img.photobucket.com/albums/v347/cschulz/13e5_3.jpg
http://img.photobucket.com/albums/v347/cschulz/16d4_3.jpg
http://img.photobucket.com/albums/v347/cschulz/19d4_3.jpg

[mudboger07]

Hey Mike, The motors a 230cc if i remeber correctly, I built a cart with one but took it out to but a vw motor on it...lol I think i stil lhave the manual. If i can find it I can send it to you if you need one. It pulled the kart ok but like all of us i needed more power....... Im not sure were your from but there is a motorcycle recking yard in east tx that still has parts for this one I think its called red river salvage. Just above tyler tx