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UngaWunga
12-21-2008, 05:14 PM
Figured some of y'all might be interested in this. I've been racing a 2000-ish RS50 for 2 years with decent results. The bike has a 68cc Malossi kit, 21mm carb, and a Jolly Moto pipe. Good for an indicated 70mph at the end of the short straight at NHMS. But I was getting left for dead by the guys that weigh a little less and have 75cc or 80cc engines. So time for something different. Here in teh states, the Euro-kits for the AM6 motors are expensive and seem rather fragile.

Why not use somethings that's much more available?

Here's how I raced the bike for the past two years. Just a little stripped down.
http://img396.imageshack.us/img396/681/p1010001es7.jpg

Time to lose all the unnecessary parts.
http://img233.imageshack.us/img233/4728/p1010002hn1.jpg

Again, removing all that unwanted crap...
http://img233.imageshack.us/img233/186/p1010004hw3.jpg

More crap coming off...
http://img168.imageshack.us/img168/9981/p1010004ql9.jpg

Its a little dirty, but hey... Its from a dirtbike.
http://img258.imageshack.us/img258/8161/p1010001vr7.jpg

Its from a 1995 Yamaha YZ80. Smaller and more powerful. I'll have to cut out the existing motor mounts and weld in some new ones. The YZ80 engine also mounts to the swingarm, but I think I can rotate the engine up a little in the front to get around having to slice up the RS50 swingarm.

So much room in there. I should put a CRF150R engine in there instead.
http://img512.imageshack.us/img512/9526/p1010005xy4.jpg

UngaWunga
12-21-2008, 05:15 PM
I'll update this as my project moves along. But seeing how I need to get the chassis up to the garage from the basement to do the welding, as we're getting 1' of snow today, it might be a while.

Rs-50-2008
12-21-2008, 05:21 PM
well its the most exciting thing i seen on here in a while :P look forward to seeing how u get on :)

Sududri134
12-21-2008, 05:25 PM
yay :D an interesting project to follow again.. :D

thanks :cheers:

UngaWunga
12-21-2008, 05:31 PM
Thanks! I was thinking of swapping the swingarms, putting the YZ80 swingarm in the RS50 chassis. They have very similar dimensions, with the YZ80 swingarm being a hair longer. The YZ80 swingarm is already notched to fit the engine cases, which would make mounting easier. But the suspension on the RS50 is direct, with no linkage, where the YZ80 uses a linkage. That's not a problem, but the YZ80 shock spring is too soft. My stock RS50 shock works reasonably well for my weight (170lbs). I'd also have to make some spacers to fit the RS50 wheel in the YZ80 swingarm. Bah... more work than its worth.

But the YZ80 swingarm is aluminum, while the RS50 is some cast piece. Maybe later.

UngaWunga
12-21-2008, 05:32 PM
Cr150F? nah keep the 80 or get a Cr-Kx-Yz-Sx 125 in

Well, my race club has a max displacement of 80cc for two-strokes. Can only cheat so much before I get caught!

Rs-50-2008
12-21-2008, 05:39 PM
so you think there not gunna notice how much quicker its going to be than every think else ? ha... i dont no what the yz 80 is like but the yz 85's are bloody quick for what they are

UngaWunga
12-21-2008, 05:45 PM
so you think there not gunna notice how much quicker its going to be than every think else ? ha... i dont no what the yz 80 is like but the yz 85's are bloody quick for what they are

Yeah, no shit!

When I first got the bike, I took it around the yard for a bit to see what its like.
Loafing around, off the pipe, not bad. Easy to manage.

Then I wicked it up and got it on the pipe. Holy cow, this is a kid's bike?!?!

I'm going to try and fit the expansion chamber under the seat if I can.

RSr
12-22-2008, 09:04 AM
My old bike appears once again, still looking good. I have a kx85 powered race rs50 and have been soo pleased with the amount of power it produces compared with the AM6 motor. There is another guy at the track that has a crf150r powered honda rs125 chassis that is damn fast. He says he prefers the torque of the 4 stroke compared to the previous motor he had in the bike.

Good luck with the conversion

rs50 '03 steve
01-07-2009, 01:05 PM
you might loose weight if you get rid of the dogs arse. lol. (pic one)

RSr
01-08-2009, 08:59 AM
The carbon fiber fender originally came from craig at cmp racing. He is over in england though i dont know if they are available anymore

UngaWunga
01-08-2009, 12:15 PM
Hey RSR or anyone else who'se put one of these engines in a RS50 chassis...

Did you engine mount to the swingarm like the TZ80/85 engine? Did you notch the swingarm for the mount, or just move the motor the 1/2" forward?

I'm having a debate on what's the best route to go. If I move it forward, I need to make a rear motor mount bracket (not a problem) and I'll have more room for a larger front sprocket if I need it.

If I notch the swingarm, the mounts become simplier. But I'm worried about room for sprockets and loss of rigidity in the swingarm.

It does look like the YZ80 swingarm will almost a direct mount to the Aprilia chassis without mods, but then I'd need to respring/revalve the YZ80 shock as its very soft. I'd also have to get a 17" rim for the rear YZ80 hub.

RSr
01-08-2009, 01:33 PM
I mounted mine forward because every conversion that I had seen done before either mounted theirs forward or commented on the bushing inside of the swingarm being made of murderously hard metal that cannot be cut with standard tools (aka, hacksaw, ceramic disk grinder). I run 14/42 gearing and it works great with a 120 link chain, mid 80's top speed.

here is where i purchased that carbon fender. It was back in 2004 so i dont know if they are even availible anymore

http://www.cmpracing.co.uk/carbonfibre_aprilia_moulded_RS50_front.htm

bourney2007
01-08-2009, 01:44 PM
I mounted mine forward because every conversion that I had seen done before either mounted theirs forward or commented on the bushing inside of the swingarm being made of murderously hard metal that cannot be cut with standard tools (aka, hacksaw, ceramic disk grinder). I run 14/42 gearing and it works great with a 120 link chain, mid 80's top speed.

here is where i purchased that carbon fender. It was back in 2004 so i dont know if they are even availible anymore

http://www.cmpracing.co.uk/carbonfibre_aprilia_moulded_RS50_front.htm


60!! :eek:

luigi1991
01-08-2009, 02:33 PM
make ur own ftw.

competitionplus
01-15-2009, 03:19 PM
Nice work! Myself, my friend and my girlfriend are thinking about racing at Loudon this summer. Where can I find info on it? Any tips?

thanks!
Chuck

bikebike69
03-01-2009, 05:01 PM
updates man...whats going on.

MattSTAR
03-02-2009, 02:42 PM
updates man...whats going on.

:plus:

Wattsi
03-02-2009, 02:48 PM
:pics:

UngaWunga
05-17-2009, 04:10 PM
Yeah yeah... I've been working on other things... Pictures coming soon.

UngaWunga
05-17-2009, 04:21 PM
No need for much text here... you can see from the pictures what I'm doing.
I'll try to keep the pictures in order.

And yes, my welding sucks. I'm working on it.

The starting point. A 2001? Aprilia RS50 with a 68cc Malossi cylinder kit and a fancy Jolly Moto pipe. Good enough to move my 180lbs to an indicated 70+ mph on the straight at NHMS. Time to trim off some weight and try a new engine.

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/RS50_before.jpg

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/stripping_down_1.jpg

Look at all that streetbike crap. Not needed on a racebike.
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/stripping_down_2.jpg

Engine out, coolant drained.
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/stripping_down_3.jpg

UngaWunga
05-17-2009, 04:23 PM
Bye bye...
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/rs50_wiring.jpg

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/RS50_malossi_motor.jpg

Getting better... Hey, that isn't an AM6 motor!
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/yz80_motor_2.jpg

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/yz80_motor.jpg

UngaWunga
05-17-2009, 04:24 PM
Spent some quality time with the grinder...
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010009-1.jpg

UngaWunga
05-17-2009, 04:27 PM
Test fitting. Getting the alignment right.
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010010.jpg

Mocking up the rear motor mount.
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010011.jpg

That'll work.
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010012.jpg

I'll weld these solid soon. Leaving them loose now, in case I need to modify them.
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010013.jpg

UngaWunga
05-17-2009, 04:28 PM
I must admit, I'm not happy about having the sprocket so far in front of the swingarm like that. But what can you do. Plus moving the weight forward should help the handling.

UngaWunga
05-17-2009, 04:30 PM
Starting on the front two motor mounts. Need to weld in some cross members.

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010003.jpg

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010001.jpg

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010009.jpg

UngaWunga
05-17-2009, 04:31 PM
Shouldn't have painted it yet, idiot. Still need to weld on the motor mount tabs...

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010020.jpg

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010023.jpg

UngaWunga
05-17-2009, 04:32 PM
While I had the grinder out, that subframe looked too heavy...

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010022.jpg

UngaWunga
05-17-2009, 04:38 PM
Ok, I have some seat choices. No, I don't have any of the old stock bodywork. It was heavy and clunky. And sold. Lightweight fiberglass is the way to go. I had a few old seats hanging around the garage... Opinions?

Old Airtech CR450 seat:
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010025.jpg

Cut down Airtech early TZ250 seat:
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010024.jpg

Or a later model TZ350 seat. By later model, I mean late 70s model... Its the real deal seat. Came with my TZ350. :cheers:
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010026.jpg

I like the looks of the TZ350 seat, but it's the heaviest one of the three. If I pull the subframe rails closer together, I can get the TZ250 seat lower, at a more normal angle, so it covers the frame rails.

UngaWunga
05-17-2009, 04:40 PM
Ok, that should be enough to keep you guys busy for a while.

Now, back to your regularly scheduled, poorly worded, misspelled, grammatically incorrect posts from 14 year olds in the UK.... :blah:

Royzx
05-17-2009, 04:45 PM
I'm not keen on any of them back ends to be honest mate, would look a lot better with a more angled and pointier backend like the newer rs50's but it's your bike so!

UngaWunga
05-17-2009, 05:07 PM
http://21.media.tumblr.com/2m8BXUfrin7zi89aRO600qkPo1_500.jpg

UngaWunga
05-17-2009, 05:49 PM
The seats... another view.

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010002-1.jpg

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010003-1.jpg

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010001-1.jpg

The TZ250 seat really isn't as big as it looks in the pictures.
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010005.jpg

Aprilia af1
05-17-2009, 06:37 PM
I like the look of the tz350 seat because it suits the bike more due to it's size rather than the honda cb450 seat etc.
Also i like the square back seat units like my af1 rather than the round style, although i like the honda cb450 race bikes and seat unit.
But the 450 unit will just look too small on the rs i think.

bikebike69
05-17-2009, 06:37 PM
Dude please stop with those seats.....AirTech is the only way to go...great quality,super strong,good price.
108453

108454

UngaWunga
05-18-2009, 07:35 AM
Those are just the seats I have hanging around the garage...

That fairing looks huge. I've been thinking that the RS50 doesn't need a full fairing, that it probably increases drag. All you really need is a fairing to get the wind off the head/shoulders of the rider. That seat looks interesting. I've been looking for a modern RS125 or TZ125 seat, as they're very aero. I can't use that seat as I got rid of the stock seatpad and cut off the stock mounts. Looks bigger that it needs to be.

One thing to note: I had a friend that ran at Daytona a few times. He picked up 7-9mph on the banking by taping up the underside of the seat, to close it off and prevent it from scooping up the air. The RS/TZ 125 seats are closed off on the bottom.

Benneyboyg
05-18-2009, 09:54 AM
more pics mate please !!

UngaWunga
05-18-2009, 08:10 PM
What KTM sm do you have? looks like a 525exc or 450sx/exc

KTM 525MXC.

I need to cut and twist the expansion chamber a little to get it to fit. That might take a few days.

bikebike69
05-26-2009, 10:07 PM
"That fairing looks huge. I've been thinking that the RS50 doesn't need a full fairing, that it probably increases drag. All you really need is a fairing to get the wind off the head/shoulders of the rider. That seat looks interesting. I've been looking for a modern RS125 or TZ125 seat, as they're very aero. I can't use that seat as I got rid of the stock seatpad and cut off the stock mounts. Looks bigger that it needs to be."

Actually the rear is the same size as the stock unit,the front is from a RS250 track bike so it sits a little deeper on the bottom and the top shoulders sit a little lower from the screen. Heres a good comparison with my first two track bikes.
109178

bikebike69
06-07-2009, 01:33 PM
updates man,whats going on?

UngaWunga
08-25-2009, 09:37 PM
Ping! Yup, occasionally working on it. Tonight's project...

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010002-2.jpg

UngaWunga
09-05-2009, 12:34 PM
Got the pipe cut and welded to fit the engine and frame. Still need to make the mounts for it.

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010003-2.jpg

I think the radiator will only fit back here.
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010004.jpg

RiejuR51
09-05-2009, 12:42 PM
just a point, you mount the rad back there and it wont get enough cool air and will probably overheat very quickly

rocketman2440
09-05-2009, 02:03 PM
If he puts a fan on it I think it will be fine

-CON-
09-05-2009, 05:26 PM
I like how you put that rad !! I've seen some racers like that .

UngaWunga
09-05-2009, 07:38 PM
I've decided to use the Yz80 radiator. Its taller, but narrower. Better fit. Pictures later.

sk8inmadkid
09-05-2009, 08:12 PM
Looks brilliant so far mate!


Keep it up :)

UngaWunga
09-06-2009, 07:40 PM
So close....

There's a race tomorrow at a track 45min from my house. Spent the last two days trying to get ready.

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010001-2.jpg
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010002-3.jpg

Bike runs great. Everything fits well enough.
http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010003-3.jpg

Except the chain. The chain I was going to put on it was a 428 chain. The sprockets on the Aprilia are 420. The front sprocket on the YZ80 motor is a 428 chain. :gunner::gunner::gunner:

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010004-1.jpg

So I'm drinking tonight instead of finishing up all the leftover bits. Crap.

Dom.C
09-06-2009, 08:31 PM
Daymn, doesn't the exhaust burn your leg?

UngaWunga
09-06-2009, 08:31 PM
Pipe diameters are complete different, and the current location is outta the way.

The YZ80 pipe has a much bigger diameter than the little RS50 pipe. Even compared to the JollyMoto 80 pipe I have, the YZ80 stock pipe is much larger.

UngaWunga
09-07-2009, 11:01 AM
And your exhaust can is upside down :) Not good in the rain

Its a racebike, and that's an exhaust outlet, which means air being pushed out. I'm not worried about it.

So what's a AM6 motor with a 68cc cylinder on it worth, with a 24mm carb and all the ignition components and a Jolly Moto 80 chromed pipe with a carbon fiber silencer? I have no need for it now.

Will-Radford
09-07-2009, 11:26 AM
How much you want for the zaust?

DanHam
09-07-2009, 03:13 PM
Will mate its an 80cc exhaust, I dont think it will fit a 50 will it?

Will-Radford
09-07-2009, 03:32 PM
Aww balls

competitionplus
09-09-2009, 04:15 PM
Looks good Unga! Pm me a price on the engine and pipe setup.

:)

UngaWunga
09-09-2009, 09:52 PM
The Jolly Moto 80 exhaust will fit non-80cc cylinders. It was on a 68cc Malossi cylinder. Check out the pictures in the first 1-2 pages.

As for a price? I don't know what it's all worth. I'll post pictures soon.

Will-Radford
09-10-2009, 02:43 AM
Cool mate, if you decide a price, please dont be really expensve, im a poor little boy hahahaha

DanHam
09-10-2009, 08:12 AM
Will postage from the US will be more than your bike cost,
Postage from Thailand for carbon pieces for my VFR cost over 60 by the time customs shafted me :devilbat:

Will-Radford
09-10-2009, 08:24 AM
Ahh, ok i didnt realise you live in the US of A :(

UngaWunga
01-30-2010, 08:06 PM
Bumping this again. I've started working on the project again. Ordered up some new sprockets and a chain. Should have the fairing mounted soon.

Anyways, the original parts are for sale if anyone is interested. Make an offer (http://www.apriliaforum.com/forums/showthread.php?t=196953).

-CON-
01-30-2010, 08:50 PM
So why is this not in the project section?

bourney2007
01-31-2010, 04:30 AM
So why is this not in the project section?


Because the thread was made before the project section was even here.

Dom.C
01-31-2010, 05:13 AM
So why is this not in the project section?

LOL :confused:

Every post used to be in one section, that is the technical section now.

I hope you don't expect me to go through literally hundreds, probably thousands of pages moving each off-topic and project thread into their correct section.

If someone brings up a fossil like this, I will move it into the relevant thread, like I have always done.

bourney2007
01-31-2010, 05:34 AM
using my word again domonic!

haha :P

-CON-
01-31-2010, 04:39 PM
I know !! I just mentioned so you would move this cool project to a project section !

Dom.C
01-31-2010, 05:08 PM
I know !! I just mentioned so you would move this cool project to a project section !

No problemo, moved.

UngaWunga
02-01-2010, 09:55 AM
Thanks. I'll try to update it more as I work on the bike.

UngaWunga
05-09-2010, 07:07 PM
Back to the top. Got a 428 rear sprocket, new chain, made a brace for the fairing, and took it for a rip around the neighborhood.

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010005a.jpg

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/Aprilia/P1010002a.jpg

RS_Patrick
05-10-2010, 05:01 AM
Why didnt you just get RS50 race Fairings or something?
Now your turning a Modern style bike into something 1970's
Those pannels would look cool on my AF1 though.

Tom-Hutch
05-10-2010, 05:36 PM
Great work, like the back end but the main fairing doesnt realy suit it and is way too high and small. Fibreglass race panels on the rest and all sprayed up would look really good.

UngaWunga
05-18-2010, 07:34 AM
Why didnt you just get RS50 race Fairings or something?
Now your turning a Modern style bike into something 1970's
Those pannels would look cool on my AF1 though.

Because those are bigger than I wanted. This bike needs to be small and light. All it needs to do is cover the engine a little, and give me a bubble to sit behind. Its much lighter than the stock plastic. Even with the YZ80 motor, the bike still needs to be as light as possible.

And I had the fairing and seat sitting around in the garage from another project.

Going racing this weekend. We'll see how it does. Hope I've guessed right on the gearing.

RS_Patrick
05-18-2010, 09:57 AM
RS50 race fairings are light also, same material (fiberglass) and i think most people racing RS50's in the USA have those.

You can also save weight by getting rid of the big feultank, and just sticking a feultank under the dummy tank cover that holds just enough for one race instead of the 13 litre tank.

UngaWunga
05-20-2010, 05:45 AM
That plastic fueltank is very light. Silly to put a fiberglass tank on when fiberglass tanks have problems with fuels here in the states. Plus I only put the premix I'll need for the race in the tank. Easy enough.

UngaWunga
05-22-2010, 07:17 PM
Got a third today. Leaders gapped me while I was stuck in traffic. By the time I got past, they had opened up too much of a gap.

http://i559.photobucket.com/albums/ss31/UngaWunga/Motorcycles/2010%20VC/P1010001.jpg

RS_Patrick
05-23-2010, 06:42 AM
Not the tank out of Fiberglass, just the Dummy/Cover, and underthat a smaller Plastic tank that can just contain enough for 1 race.

Dom.C
05-23-2010, 07:12 AM
Great work, like the back end but the main fairing doesnt realy suit it and is way too high and small. Fibreglass race panels on the rest and all sprayed up would look really good.

It's a race bike, weight and aerodynamics are key, not looks. That's why it's how it is I'm assuming.

Lookin good anyway.

Tom-Hutch
05-24-2010, 12:35 PM
but fibreglass race fairing would be light

RS_Patrick
05-24-2010, 01:44 PM
but fibreglass race fairing would be light


His are Fiberglass also, and a bit smaller so a liitle lighter in total, but they dont look as nice as a Fiberglass RS50 kit.

The other point i have is he uses these body pannels because there lighter but than doesnt change the tank for a fiberglass shell with a small race (go-kart style) feultank.

Tom-Hutch
05-24-2010, 03:30 PM
that seems logical, i can imagine that is one of the heaviest parts that are easily and relitavely easily replaced?

RS_Patrick
05-24-2010, 05:44 PM
You can buy kits for that yes, I know thers a Fiberglass Tank Cover for the RS50, and seen a guy that had a little "transparent" Feultank under the Seat (where normaly the Oiltank and Battery sit) think it was a Go-Kart feultank.

UngaWunga
05-25-2010, 03:24 PM
Have you ever held a plastic RS50 gastank in your hands? Its very light as is. I see no reason to replace it with something that isn't as sturdy and won't be lighter. I could care less how ugly the bike is. I'll crash it eventually to make it look like a proper racebike.

I need to move the seat back an inch or so and trim the windshield as I can't tuck in fully behind the fairing right now.

I'm also running into problems on the brakes, as my weight has been moved forwards and the bike is lighter, so the bike wants to stoppie. If I can move my weight back a little and lower the seat, it should help stop the bike from wanting to rotate over the front tire. Riding the front wheel into a corner is fun and all, but it isn't fast.

I also have a friend that can TIG weld much better than I can, and will make a pipe for me. It'll fit under the bike so I can move the underseat radiator back up front.

I also think the rear shock spring is too strong. The bike handled weird, skittish. But that could also be from moving the seat and my weight forward.

Who makes aftermarket shocks for this things? Are they worth the money?

RS_Patrick
05-25-2010, 08:13 PM
I got 2 tanks here with out the dummy cover and there light, but in racing everything counts and a Go-Kart gastank only weighs 1/10 of what the RS50 tank does and in Racing every gram counts IMO.

There are loads of Aftermarket Shocks and some of them are really worth the money (fully adjustible ones especaily)
Since your in the USA it might be a little hard getting one.

bikebike69
05-26-2010, 05:15 PM
pit bike shocks are easy to pick up on ebay and cheap enough.

competitionplus
05-27-2010, 03:11 PM
Nice work last weekend Unga! I couldn't keep up with you guys.

soofle616
06-09-2010, 02:41 PM
I've been looking for some aftermarket shocks myself lately now that I've been really raggin on my 50. The guys at AF1 offered to help me source a custom from Penske but estimated cost at somewhere around 600-800 bucks. Not terrible compared to any other penske but still a good chunk of cash. This thread definitely has me thinking more about my RS though. Just had it out on the track yesterday and managed to get my corner speed up enough that I'm running out of gear pretty much everywhere on the track. Problem is there is one hill that absolutely DEMANDS short gearing if I plan to climb it so the only real solution at this point is a motor swap since I already have the 21mm, 70cc, and leo exhaust.

UngaWunga
08-24-2010, 06:47 PM
I've been looking for some aftermarket shocks myself lately now that I've been really raggin on my 50. The guys at AF1 offered to help me source a custom from Penske but estimated cost at somewhere around 600-800 bucks. Not terrible compared to any other penske but still a good chunk of cash. This thread definitely has me thinking more about my RS though. Just had it out on the track yesterday and managed to get my corner speed up enough that I'm running out of gear pretty much everywhere on the track. Problem is there is one hill that absolutely DEMANDS short gearing if I plan to climb it so the only real solution at this point is a motor swap since I already have the 21mm, 70cc, and leo exhaust.

Not really. At least the AM6 motor is a 6 speed. The YZ80/85 is a 5 speed. Keep your motor and put a 100cc kit on it. If that doesn't work, learn to slip the clutch up the hill with the taller gearing.

RS_Patrick
08-24-2010, 07:35 PM
You can order a longer 6th gear, its been discused a few times already... that way 1 to 5th are the normal gearing, and 6th is a little bit longer for a higher top end speed.

There is no 100cc kit for the AM6 btw, biggest bore on the stock crank is 76cc, biggest on a long stroke is 86cc.

Im not a fan of the Leo's on anything but Stock/50cc setup.

For more torque power you could try a 24mm Mikuni Flatslide.

gsaltus
08-25-2010, 11:33 AM
You can order a longer 6th gear, its been discused a few times already... that way 1 to 5th are the normal gearing, and 6th is a little bit longer for a higher top end speed.

There is no 100cc kit for the AM6 btw, biggest bore on the stock crank is 76cc, biggest on a long stroke is 86cc.

Im not a fan of the Leo's on anything but Stock/50cc setup.

For more torque power you could try a 24mm Mikuni Flatslide.

WRONG!! Not very informed are we? Parmakit makes a 110cc kit for the AM6 and Derbi motors. Check the video http://www.youtube.com/watch?v=pySey42M6UU

gsaltus
08-25-2010, 11:43 AM
I've been looking for some aftermarket shocks myself lately now that I've been really raggin on my 50. The guys at AF1 offered to help me source a custom from Penske but estimated cost at somewhere around 600-800 bucks. Not terrible compared to any other penske but still a good chunk of cash. This thread definitely has me thinking more about my RS though. Just had it out on the track yesterday and managed to get my corner speed up enough that I'm running out of gear pretty much everywhere on the track. Problem is there is one hill that absolutely DEMANDS short gearing if I plan to climb it so the only real solution at this point is a motor swap since I already have the 21mm, 70cc, and leo exhaust.

You should change the ignition, inner rotor setup is the best and use a jolly moto exhaust instead. You gain more bottom end allowing you to stretch out the gearing. Also if you carb up to a 24 or higher and run no airbox you can get the kick you need to get up that hill.

For a race setup Jolly motos hit harder than everything else. Metrakit is another great source for power. Their bikes cc for cc beat motor swaped bikes all day.

RS_Patrick
08-25-2010, 04:47 PM
A: i never seen a Parmakit hre, dont even think i seen any of there producs here for sale ever.
B: People say a Malossi MHR etc. for AM-6 is 80cc also while it actualy is 75cc
C: But your basicly right, Parmakit has a Diameter of 55mm, and a Stroke of 46mm, wich makes it 109cc.
D: I seriously doubt it has any advantage over a Top Performances 85cc, Otherwise they would have been way more popular over here for sure and i surely would have heard about, or if i did hear about it i would have remembered it.
You would seriously have to tune the crankcase and you need a custom made exhaust also for it in anycase.

If i wanna play with 110CC im not gonna mess around with an AM-6 wich will have some serious problems getting the power from the crank to the sprocket anyway, i would just grab an Yamaha RD 80cc 6 speed engine i got laying here and stick that in there with a 110cc Malossi (wich im actualy plan on fitting in my Aprilia AF1)

UngaWunga
11-08-2010, 12:30 PM
BTW, this bike is for sale. Time for me to move on to something different. $1300.

hellish100
11-11-2010, 09:12 PM
Are you willing to part it out?

UngaWunga
11-12-2010, 03:17 PM
I'd rather sell the complete bike. What are you looking for?

hellish100
11-12-2010, 11:34 PM
Could you part with the carbon front fender (is it real?) and or the little white swingarm stand (I gotta ask, right?) ?

Im still searching for the room/funds for the complete bike but those two things would make me happy. I tried sending a PM but I guess I dont have enough posts.
Im 25minutes south of Nashua, so not that far compared to others on this board!

thanks for your time.

hellish100
11-14-2010, 10:24 AM
Ya know, I might be more serious about the whole thing minus the motor and bodywork.
I want a four stroke. PM me your number so we can talk.
thanks.

UngaWunga
11-15-2010, 10:21 AM
Thanks, but I don't want to sell the fender unless you want it with the rest of the bike.

UngaWunga
11-21-2010, 11:20 AM
Sold, Thanks.