Putting tc on rt200

[Jordan29312]

There seems to be hardly any info about rt200 and rb200 coleman bikes. one thing I found out is theres no modifications needed to put a torque converter on it's just bolt and go I only had to remove the heat shield. The stock engines on these come with a 3/4" crank shaft not 5/8 like the other coleman's

 

[Jordan29312]

This is what the bike looks like now

 

[SAS289]

This is what the bike looks like now View attachment 280350

Nice. I see you moved the throttle spring out of the stock position on the governor arm. What kind of RPM are you getting at top speed? Did you stay with stock gearing/sprockets?

I heard they're using a Lifan engine instead of the Hisun.

 

[Charles S]

The RB/RT200 hasn't been available very long, thus the lack of info. Based on the Monster/Mega Moto 212 (Pro Series frame but equipped like the cheaper Max), the RB/RT200 bikes are manufactured by Tao Motor (AKA: Tao Tao) while most modern Colemans have been manufactured by Hisun.

It isn't a heat shield, the shroud is actually a cooling duct that directs air flow from the fan/blower around the cylinder and head.



https://oldminibikes.com/forum/index.php?threads/colemans-new-mini-bike.171911/

https://oldminibikes.com/forum/index.php?search/703425/&q=RB200&o=date

https://oldminibikes.com/forum/index.php?search/703424/&q=RT200&o=date

https://taomotor.com/products/mini-bikes/db200/

https://taomotor.com/about/

https://oldminibikes.com/forum/index.php?search/703435/&q=mega+moto&c[title_only]=1&o=date

https://oldminibikes.com/forum/index.php?search/703434/&q=monster+moto&c[title_only]=1&o=date

 

[toomanytoys]

The RB200s have been coming into stock at the local dunhams

https://www.dunhamssports.com/product/rb200_mini_bike/W0000108129.html

Pretty sweet little units. I have the mb212 pro and it's a nice bike. I was hoping I'd like it more than I do though. I spent a lot of time and money building it to realize I really don't like riding it. It's now back to stock setup and up for sale. Hisun clone, China tav and boom. It's out the door soon I hope.

 

[Jordan29312]

The RB/RT200 hasn't been available very long, thus the lack of info. Based on the Monster/Mega Moto 212 (Pro Series frame but equipped like the cheaper Max), the RB/RT200 bikes are manufactured by Tao Motor (AKA: Tao Tao) while most modern Colemans have been manufactured by Hisun.

It isn't a heat shield, the shroud is actually a cooling duct that directs air flow from the fan/blower around the cylinder and head.

View attachment 280365

https://oldminibikes.com/forum/index.php?threads/colemans-new-mini-bike.171911/

https://oldminibikes.com/forum/index.php?search/703425/&q=RB200&o=date

https://oldminibikes.com/forum/index.php?search/703424/&q=RT200&o=date

https://taomotor.com/products/mini-bikes/db200/

https://taomotor.com/about/

https://oldminibikes.com/forum/index.php?search/703435/&q=mega+moto&c[title_only]=1&o=date

https://oldminibikes.com/forum/index.php?search/703434/&q=monster+moto&c[title_only]=1&o=date

Ya it's a tao tao engine, dang that cooling shroud sounds important maybe I should just try putting it back on and cutting a hole in it to make it fit

 

[Jordan29312]

Nice. I see you moved the throttle spring out of the stock position on the governor arm. What kind of RPM are you getting at top speed? Did you stay with stock gearing/sprockets?

I heard they're using a Lifan engine instead of the Hisun.

Yes I stayed with stock sprocket 50 tooth and the 10 tooth on the driven pulley I wish I could get a bigger rear sprocket I need more torque. I'm a big guy I weigh 320+ pounds and it's not even close to popping wheelies with me on it. The rpms at top speed are around 3800 at 35 to 40 mph it doesn't rev high with the tav. When I just had the stock clutch and jackshaft it would rev all the way up to 5000 rpm and the governor wouldn't kick in I would just back off after a second because I didn't Wana blow the engine

 

[Charles S]

Does your sprocket have 3 bolt holes like the MM-B212? If so, contact GPS, ask if they can get you a 72T Mega Max 212 sprocket. They had it in stock in the past but it isn't listed on the website, now.



https://www.gopowersports.com/about-us/

Another option: GPS has a sprocket adapter that fits the MM-B212 (according to description) and split sprockets up to 68T.

https://www.gopowersports.com/universal-sprocket-adapter-8-wheels/

https://www.gopowersports.com/split-sprocket-41-420/

Otherwise, there are companies that will custom make a sprocket to your specifications, Azusa Engineering, Rebel Gears, etc.

 

[SAS289]

Yes I stayed with stock sprocket 50 tooth and the 10 tooth on the driven pulley I wish I could get a bigger rear sprocket I need more torque. I'm a big guy I weigh 320+ pounds and it's not even close to popping wheelies with me on it. The rpms at top speed are around 3800 at 35 to 40 mph it doesn't rev high with the tav. When I just had the stock clutch and jackshaft it would rev all the way up to 5000 rpm and the governor wouldn't kick in I would just back off after a second because I didn't Wana blow the engine

IMO any Coleman 200 with a torque converter needs a 60 tooth rear sprocket at a minimum no matter what you weigh. Some guys are even getting the 60 tooth right away for their new Trail masters.

I run 9/60 tooth gearing on my Coleman 200 driven by a mildly built 196 that is governed to around 5K RPM. On a recent off road trip I just had to put the bike on the road to top it out once. I don't have GPS but the tach recorded 4990 max RPM. I didn't hold it there long enough to see if the governor would react. Probably low to mid 40's mph. That's nice but my objective was never high road speeds. 99% of the ride was under 4500 RPM. I weigh 180.

If you don't mind the huge sprocket a 72 tooth may be a good option for you. And you shouldn't lose much top speed. You would just be getting it at a much higher RPM. Maybe over 5K. If you are concerned about blowing the engine with that gearing get a billet rod. I used billet rod and PVL flywheel knowing I wasn't going for high RPM. It's a better engine with them.

You have other options you could take besides just gearing. A bigger engine to start with (Tillotson/Ducar), building a more powerful high RPM 196, then adding a Juggernaut driver, etc if your objective is higher road speed. If you don't care to do all that then gearing is the way to go for better performance with the stock engine.

 

[RandomBeat]

There seems to be hardly any info about rt200 and rb200 coleman bikes. one thing I found out is theres no modifications needed to put a torque converter on it's just bolt and go I only had to remove the heat shield. The stock engines on these come with a 3/4" crank shaft not 5/8 like the other coleman's View attachment 280349

Did you use a riser plate or home made risers, or no riser at all?

Did you need more chain?

This is my first time doing anything like this and Im trying to make sure I order everything Ill need, so far have the TC kit from amazon, header from go power and intake from amazon as well, I know I may end up needing to jet the carb, if possible, I have seen some folks say the main jets are not replaceable in the RB200 motor.

Sorry to hijack your thread lol but thought maybe someone would know about the risers, chain, and jets.

 

[Jordan29312]

Did you use a riser plate or home made risers, or no riser at all?

Did you need more chain?

This is my first time doing anything like this and Im trying to make sure I order everything Ill need, so far have the TC kit from amazon, header from go power and intake from amazon as well, I know I may end up needing to jet the carb, if possible, I have seen some folks say the main jets are not replaceable in the RB200 motor.

Sorry to hijack your thread lol but thought maybe someone would know about the risers, chain, and jets.

No I didn't need anything extra it was awesome! No riser plate it fit without it and the stock chain was the perfect length didn't have to mess with it at all. It was really a simple swap. As far as the jets yes you will need to rejet it I just put a new air cleaner on but left the stock exhaust and it still was too lean didn't run good. So I put in a bigger pilot and main jet that came with the filter, and now it's slightly rich but runs much better I think I just need to put a free flowing exhaust on there and it'll be perfect.

 

[Jordan29312]

Originally I thought I couldn't change out the jets in the stock carb because where the bolt that hold the float bowl on is suppose to be it's just a flat piece of metal but I realized after a while you can just grab onto the washer with a pair of pliers real tight and it unscrews like normal and you can change the jet

 

[Jordan29312]

Does your sprocket have 3 bolt holes like the MM-B212? If so, contact GPS, ask if they can get you a 72T Mega Max 212 sprocket. They had it in stock in the past but it isn't listed on the website, now.

View attachment 280377

https://www.gopowersports.com/about-us/

Another option: GPS has a sprocket adapter that fits the MM-B212 (according to description) and split sprockets up to 68T.

https://www.gopowersports.com/universal-sprocket-adapter-8-wheels/

https://www.gopowersports.com/split-sprocket-41-420/

Otherwise, there are companies that will custom make a sprocket to your specifications, Azusa Engineering, Rebel Gears, etc.

Thanks for that link to the sprocket adapter I think that's what I'll have to get because I can't find any sprocket to fit that pattern beside the stock one which I guess is 53t not 50?

 

[SAS289]

Thanks for that link to the sprocket adapter I think that's what I'll have to get because I can't find any sprocket to fit that pattern beside the stock one which I guess is 53t not 50?

This works well and goes out of stock often. Unless they are using a 3 bolt sprocket now.
#40/41/420 Chain - 60 Tooth Rear Sprocket for Mini Bikes - Monster Scooter Parts

 

[Jordan29312]

This works well and goes out of stock often. Unless they are using a 3 bolt sprocket now.
#40/41/420 Chain - 60 Tooth Rear Sprocket for Mini Bikes - Monster Scooter Parts

Ya mine has the 3 bolt hole, which nobody makes sprockets for it sucks

 

[toomanytoys]

Ya mine has the 3 bolt hole, which nobody makes sprockets for it sucks

Lay yours out on top of your new sprocket line it up properly mark and drill your own pattern. It's not too hard.

 

[Kyminibiker]

I'm 250 lbs and You may even want to run a 72 tooth. I have the mega max 212 version which has the sprocket on the same side as yours. The frame is slightly different then yours but with a jetted/piped/air cleaner/8 deg key 212 predator and a china boy tav 30 it seriously hauls some butt. The lower gear must really let that tav wind out into that OD because this thing as the best top end of any of my mild 212/30 series bikes and will lift the wheels from a roll. seriously sweet combo. The left foot peg needs to come out a few inches, not sure if you'll run into that issue or not. Also i cannot verify on the pro/rt/rb version but a briggs 14-20 hp v twin and 40 series WILL fit on the mega max frame with no mods, its what I plan to do with mine eventually. Right now I am havin way too much fun with it to tear apart, took it on a 20 mile ride or so tonight.

 

[Jordan29312]

I'm 250 lbs and You may even want to run a 72 tooth. I have the mega max 212 version which has the sprocket on the same side as yours. The frame is slightly different then yours but with a jetted/piped/air cleaner/8 deg key 212 predator and a china boy tav 30 it seriously hauls some butt. The lower gear must really let that tav wind out into that OD because this thing as the best top end of any of my mild 212/30 series bikes and will lift the wheels from a roll. seriously sweet combo. The left foot peg needs to come out a few inches, not sure if you'll run into that issue or not. Also i cannot verify on the pro/rt/rb version but a briggs 14-20 hp v twin and 40 series WILL fit on the mega max frame with no mods, its what I plan to do with mine eventually. Right now I am havin way too much fun with it to tear apart, took it on a 20 mile ride or so tonight.

Ya the foot peg definitely needs an extension now the first time I rode it with the tav I didn't use a cover and didnt realize I needed to watch my left foot. The driven ate my shoe lol that could've been bad, so now I watch my foot when I ride because I ride without the cover most of the time. With the cover on my foot can only half fit on the peg and it gets uncomfortable

 

[rds]

nice job, who makes the tav30 kit you used, did you have to cut the bottom off the rear end of the plate?

 

[Jordan29312]

nice job, who makes the tav30 kit you used, did you have to cut the bottom off the rear end of the plate?

I just used the cheapest kit on Amazon i could find, but I would probably recommend getting a better one because the bolt holes on the mounting plate didn't line up and I had to drill new holes. not a big deal if you have a drill but it was inconvient. And no I didn't have to cut off the bottom of the plate to fit the frame without risers but it was a super close fit so close I can't get the bottom right bolt in on the cover, but that didn't bother me.