right angle gearbox RAG Vertical Shaft and mower guys

[bighead]

I have this RAG from an 80's ATC250es Big Red Trike. Has room to weld sprocket or pulleys on. Has 3 mounting holes. Come from a 250 big red so should be really strong.

If you can use it and show me what your using it on. I will ship it for shipping cost only.

I see these asking/starting from $15 to over $100 on ebay.

USPS flate Rate Box so shipping is only $10.85 I think. USA

Okay this is not just a free part post. But what could this part be used for in karting? Are RAG that are the normal style cost a lot? Could this be good DIY RAG? Also how are these oiled? The long shaft goes into the atc tranny and you see the o-ring in the pics. But how is the grear lubed? Grease?

Also it seems to be a 3/4 to 1 reduction.

It's small and has the mounting holes. I can see this sitting under a veritcal shaft engine pretty easy.

 

[Unbrokenhope]

This is what you use in a go kart it your using a riding lawn mower engine with a vertical shaft and you need to kick over to horizontal right?

 

[bighead]

This is what you use in a go kart it your using a riding lawn mower engine with a vertical shaft and you need to kick over to horizontal right?

I think it would work well. Depending on how it is lubed though.

 

[Unbrokenhope]

I will have to look into this more my wife's uncle has a motor from a riding mower in his garage he is going to give to me next time he heads my way

 

[Z0M8I3]

Sent you a PM about this, Could REALLY use this for a project I just started!

 

[bighead]

Sent you a PM about this, Could REALLY use this for a project I just started!

How will you be using it?

 

[Z0M8I3]

I'm going to modify it to connect directly to the shaft on the mower and then I'm going to fab up a driveshaft that will connect between it and the rear axle. With the pulley shaft being on the top of the mower transmission/rear axle i'm going to turn it the axle forward 90' remove the pully and have the shaft act as a yolk for the other end of the driveshaft.

It's something I came up with yesterday and lastnight when I was looking I came across this part and realized it's exactly what I'm needing.(I didn't even know they exist to be honest..lol.)

 

[bighead]

OKay cool. I think I have the little shaft that goes with it. I will look tonight and take a pic and also send you my paypal info for shipping cost.

 

[Z0M8I3]

Sounds great, Thank you very much!

 

[bighead]

Care to post some pics of the project? Looking for the shaft now...

I think it will work perfect for what your doing. Your going to have to make a build log. I know it should be pretty strong enough. It came from a big red ATC. That was Honda's work horse of the day.

Have you did any math on 3/4 to 1 reduction?

You just joined so if you start a build thread I will send you this part for shipping only. I have a few of these RAG. So really trying to see what other people say and do with one. Thats why I want to see a build thread. As far I know it would be the first.

How will you mount it under the engine? Well from just looking at the part that is?

 

[Doc Sprocket]

Thinking out loud here- I see a potential use.

Most of you are aware that I got rid of the GX340 that powered my kart. My plan (once I get 5 minutes to myself), I will be mounting a Yamaha 250 V-Twin Virago engine with 5-speed manual transmission.

The current plan is to mount the engine in it's normal (bike) orientation, extend the shaft to clear the gearbox, and run chain down and forward to the axle. My only peeve is that the forward jug forces the engine further back in the chassis than I would prefer. Not much I can do about that... Or is there?

Enter the RAGB. I could turn the engine sideways in the frame, moving it forward. Using the Lovejoy (flex) coupler that I would be using anyway to extend the shaft, I would couple the RAGB to the tranny's output shaft. The drive sprocket gets mounted to the RAGB output, and a chain run down to the axle as usual.

As a side effect, I think cooling would be improved in that orientation. It is a free-air engine, and I believe that having the jugs sticking out sideways would better expose them to cooler air. Thoughts?

EDIT- Regarding your lubrication question, I believe the answer to be grease. A drain/fill port would be pretty obvious. No port? Probably grease.

EDIT II- Mounting presents an interesting problem. As there appear to be no tabs or bosses, one would have to use a piece of 1/4" plate, with a large hole cut in it, to match the bore on the side of the box with the cover bolts. One would have to drill matching boltholes in the plate, and use longer bolts (very likely Metric) in the stock cover bolt holes.

 

[Z0M8I3]

Care to post some pics of the project? Looking for the shaft now...

I think it will work perfect for what your doing. Your going to have to make a build log. I know it should be pretty strong enough. It came from a big red ATC. That was Honda's work horse of the day.

Have you did any math on 3/4 to 1 reduction?

You just joined so if you start a build thread I will send you this part for shipping only. I have a few of these RAG. So really trying to see what other people say and do with one. Thats why I want to see a build thread. As far I know it would be the first.

How will you mount it under the engine? Well from just looking at the part that is?

I'll be starting a build thread in here in a bit, was just getting ready to before I head off to bed. As far as math or anything goes I've not done any calculating yet. This was a spur of the moment project I came up with when I was given the chance to buy a mower off of my neighbor. I'll put details in the thread and link if from here if you'd like. I don't have much to go on just yet because I'm still searching out parts.

EDIT: here's the build thread: CLICK HERE