150cc motor mounts/swing arm? By new2scooters (Read 18,605 times)

[new2scooters]

My 50cc project is nearing completion and I will formally start the VIN application procedure later this week. At this point I'm still contemplating the next build to see where I want to go with it. If anyone here has any photos that could show me how a 150cc engine is mounted and/or the type of swing arm arrangement they use (since they are mounted differently than a 50cc), I would certainly appreciate seeing them and reading any input you may have to offer. Thanks in advance for any help you may be able to give.

Bill

[Alleyoop]

There was a guy that stuck a 150 in a 50 frame he had to do some welding and stuff. There is also a kit that you can buy I think its the monstergy6 guys.
Alleyoop

[sprocket]

150cc engines are hung (pivot).. by the top.. you will have to weld bolt points to the frame...and they must be exact. I think the kit is the best way to go

I have known a few guys that have tried this... most wish they had just bought a 150cc...and all spent far more than they planned...

The kits cost about $500!!

www.monstergy6.com/product_MGY6_mounts.htm

Check Utube there are a number of conversions there

[Alleyoop]

$500 bucks for the kit Damn, just go and get a 150 for that price. Unless your a welder you will spend more than getting a Chino 150.
Alleyoop

[runningslow]

If I'm not mistaken, Bill is talking about putting a 150cc into a frame intended for an electric scooter. So, the kit wouldn't be necessary, because he isn't doing a 50cc to 150cc conversion.

[jct842]

I think the kit is aimed at those who want to skirt the law and ride a 150 with a 50cc frame serial number. Probably not too much knowledge needed as in being able to fabricate a mounting in a small frame with kit. Perfect for a revoked driver in some states till he gets caught!. Bill has shown us he is way above average in fabrication and welding. john

for those wanting the 50cc with a 150 motor the easy way is to cut off the part of 50cc frame with the numbers and stick it on the 150 frame!

[Bashan]

Oh, I see. Well then, here is the standard GY6 engine mount and how the mounting bolts fit through it:

Here are the bolts:

And then the rubber bumpers work like this:

Rich

[sprocket]

>>Perfect for a revoked driver in some states till he gets caught!.

Ya and that loop hole is closing in some states...

[new2scooters]

Mar 26, 2012 13:11:23 GMT -6 runningslow said:

If I'm not mistaken, Bill is talking about putting a 150cc into a frame intended for an electric scooter. So, the kit wouldn't be necessary, because he isn't doing a 50cc to 150cc conversion.

Thanks to all who have replied. Yes, runningslow, you are correct. I still have 3 scoots, new, in the shipping box that originally were destined to be electric powered. First of 4 is done, with the exception of acquiring a VIN for it and that process will start later this week. I don't expect any issues with that procedure as it looks straightforward and manageable but you never know.....So I am now contemplating build #2, hence my question on the 150's mount.

[sprocket]

How heavy are the electric scooter frames? the ones I have seen wouldn't stand up to a 150cc, they are simply too light weight. At any rate plan on double rear shocks. There were a few single shock 150s on the market but they were fairly hairy to ride...

The swing arm simply bolts to the engine and has a shock mount and mounts for muffler and disc brakes...

What sized wheels?

[new2scooters]

Mar 26, 2012 13:49:48 GMT -6 Bashan said:

Oh, I see. Well then, here is the standard GY6 engine mount and how the mounting bolts fit through it:

Here are the bolts:

And then the rubber bumpers work like this:

Rich

Thanks for the reply and the photo's. Photo's are worth a thousand words sometimes.... In the picture of the mount assembly are the bolts that go through the bushings and mount to the frame in the same plane, ie, directly across from one another?

Without an engine mounted, how much freeplay, if any is in the mount? How much will the mount rotate before contacting the rubber bumpers or are the rubber bumpers in contact with their stop in a static position and thus rely totally on the bumpers compression to provide the needed flex?

The part that mounts to the engine "seems" like it would interfere with carb mounting. Do 150's have a higher intake manifold or is it somehow angled to give it clearance?

Thanks

Bill

[sprocket]

The carb sits in front of the hanger and the air hose to the filter or a UNI sits in the U of the mount pipe...

Check out Google images there are lots of conversions of 150 scooters to things that look like Ruckus clones... lots of custom frame stuff too...

[new2scooters]

Mar 26, 2012 15:30:50 GMT -6 sprocket said:

How heavy are the electric scooter frames? the ones I have seen wouldn't stand up to a 150cc, they are simply too light weight. At any rate plan on double rear shocks. There were a few single shock 150s on the market but they were fairly hairy to ride...

The swing arm simply bolts to the engine and has a shock mount and mounts for muffler and disc brakes...

What sized wheels?

I am confident that the frame will stand up to the stress. These aren't the usual "electric" scoots that I have seen being sold recently. On my first build jct842 brought this subject up so I did the calculations

www.scooterdoc.proboards.com/index.cgi?board=customscootsmodsetc&action=display&thread=5515&page=1

and there actually was more steel cross sectional area in these frames as compared to a gas scoot. There is some real meat on these bones....

The original wheels are 10" but because it will be capable of higher speeds, I feel I may have to go with 12's. Of course 12's bring on their own set of problems as it will mean a "long" gy6 case which will change wheelbase length, etc... so right now I'm just trying to get a grasp on the 150 mounting issues. One bridge at a time.....

Thanks for your reply.

Bill

[sprocket]

look at my AC CDI post there are some custom Ruckus frames and you can see how they mount the engines...just a pipe across the frame with a shackle mechanism on each end.. pretty simple...

[Bashan]

The bolts are in the same plane. You can eyeball through one and the other one is right in line.

There is some play between the tops of the bumpers and the frame stop. This allows for a surprising amount of forward and back movement of the engine as bumper arm rocks. I think this is designed to protect the engine from thrust forces rather than provide part of the suspension.

The mount does interfere with any carb or manifold that extends back farther than a standard GY6 carb. It's a PITA and I'm trying to design something that will allow intake mods without trying to work around it. Rich