I contacted Dan at RPM via e-mail
he told me he still has casings for the 350 gearbox but it would not be an easy resurrection
He told me
1.he made one that was not a bolt in piece
2.different axles had to be used (difficult change over?)
3.it would, as it is written, handle alot of abuse
4.at one time he made a replacement piece for the 350 but he does not have the output shaft and certain other items needed for the box, this unit was limited becuse of the stock running gear as I understand axles etc.
Are these units out there somewhere else (used) (different maker etc.)

As I am new to all of this please correct me anytime.
He is willing to work somethong out but I just did not know if someone else has a unit...
Thanks Go Oddy

Are you looking for a 350 gear box?

RPM trans copy
Roberto trans copy
http://www.team-moto.com/index.cfm?Acti ... Category=7



Forward / Natural / Reverse

TEAM-MOTO FNR TRANSMISSION
INPUT: 1" W/ 1/4" KEYWAY
OUTPUT: 930 CV JOINT
POWER RATING: 170 HP
GEARS HARDENED: 50 ROCKWELL
CASING: ALUMINUM CASE
GEAR RATIO: 9:1

Perfect for your Do-it -Yourself guys that need a forward / natural / reverse transmission on their go-kart, dune buggy or mini sandrail.

I have a working 350 stock box
but as I get into the machine I just would like to make it stronger overall
Regards Go oddy

I have the rpm gear box that was used in the 350's in my briggs built car. You need dimensions? I am running VW type I axles and cv's.

king, what needs to be done to the buggy to run the box can you give me specs. and pics?
and for the Cv setup
Thanks
Go Oddy

I was under the impression that it bolted right into the ody frame. If not, it shouldn't be anything more than just making up a couple tabs and welding them to the frame. For the cv's, my set up uses the vw type one hubs that slide onto the rpm output shaft. They use an allen bolt to secure them, then the cv bolts to the hub. These are the only pics I have right now. Here are a few pics to get you started. All the attachments to this tranny are custom made pieces, brake rotor and mounting, shifter linkage supports etc.

Now that is a great setup!
You must have some serious power going to the wheels.
Do you know if the weak link in the Ody trans is Trans Cases or gear/bearing failure.
My question ultimately is can I rebuid the stock cases with better gear?
Regards Go Oddy
People on this site are from good stock

The weak part of the 350 trans is the needle bearing in the AB gear. Once the needle bearing fails, then the tooth pattern is off allowing the gear tooth/teeth to break. I have never heard or seen a 350 case crack. Part of the problem with the ab gear needle bearing failing is a lack of lubrication. The bearing and gear are above the lube level in the trans, so when the Engine is idling and the Engine is being revved without the actual wheels turning, (the wheels turning will sling the oil from the lower gears up to the top of the trans) the bearing will eventually fail. Dan Roberto has run into this problem with his trans as well. The fix is to use a good synthetic gear oil and to overfill it a bit. Here is a link to a 350 trans that I went through. You can see that the gears are pretty beefy.
http://pilotodyssey.com/PO/viewtopic.ph ... =350+trans

Are there any pre failure signs
play at driven etc
If it fails what is the outcome seizure of trans..gear breaking?
Thanks for the info
Go Oddy

When Brooks trans failed it just locked up on the trail. Rocked it back and forth a few times, it unlocked itself and then pushed it back to camp. There were no big flags indicating a failure was in the near future. The needle bearing had failed, allowed the ab gear to MUTT and break off a few teeth. The failed bearing also scored the shaft that it rides on. If you have your Engine out already, then you could easily remove your trans, open it up and inspect, replace the needle bearings and reassemble. I saw your other post about your Engine, who is Glenn in CT? Are you planning on putting a snowmobile Engine in this? or just building the 350 Engine?

Check his site ATV innovations.com Ellington CT
he has been building engines for quite sometime and he was part of Dustin Wimmer's ATV national win
at this point the 350 is going back into the Ody.
Future possibilities are for a 580 twin Rotax that I have...liquid cooled all the gauges etc...
I have never ridden a 350r before with a strong Engine so I wanted to start here before modifying the Ody.
from what I learned here thus far... a properly tuned 350r will out power the stock suspension and I will be using this for trail duty so zero to 25-30 to zero is what this will see on a regular basis
If after getting it up to par with 350 Engine enough then the Engine will stay Honda
Where do you ride that awesome michine King?
I used to practice with my MX Raptor at Rocky Hill in CT until they closed it to regular Quad use
Regards
Go Oddy

Ok King
so I am a little slow!
I just realized that I have been talking to you on the other post
re: west MA riding
My Bad
Go Oddy

I know this is an old thread but on the last picture what is the piece coming off of the frame and going to the driven? Was it for added support because of high horsepower or ??.

The idea was to give more support to the input shaft... the Engine that was in the Briggs originally had much less power and torque... adding this was to support the shaft to help it from being pulled toward the Engine under acceleration...
how do you measure the effectiveness of the support as a backyard hack like myself? I don't know... but it makes good sense and it can be found of other rigs as original equip
regards

Thanks for the reply. Makes sense. Was the bearing set up used here an over the counter part. It appears the mount was fabricated.

To comment about the needle bearing failure --- I had the same problem on my formula atlantic race car. I kept losing pinion bearings and the only solution was to run a pump. I pulled out of the drain plug and pumped it into the casing near the pinion. Problem solved. Could probably do the same here but now we are drawing from a relatively low output charging system on the oddy. I run two 4" bilge fans on my air cooled head and that's the max on an oddy charging system.

You could contact Ricky stator. He may be able to modify one for a 350. Might be talking out my ass though. Worth checking into if you had a good reason.

If some one had a bad stator u could rewrap one ur self then u would need a bigger reg/rect
To handle the load

I have done it on Honda 50's in the past

Generally u can go with smaller wire and more wrapping and get more wars out of it

Buddy is getting abought 500 wats out of his 650 Honda dual sport

Wow,
Wish I had one like that with my last car. That was the weak point and this unit looks nice.