TMX 30 Malossi 210 sport setups
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Member
PX 200
Joined: 25 May 2016
Posts: 45

Sat May 11, 2019 7:51 am quote
Hi all!

Anyone fitted a TMX 30 (with powerjet) to a rotary malossi 210 setup?

Anyone have any ideas of the jetting?

Current setup:

PJ 25 1.25 screws out
MJ 220
Powerjet 30
Needle 5DP39 (default was 5el68) clip in the middle

Seems to be running a little rich, Iím at sea level
Member
PX 200
Joined: 25 May 2016
Posts: 45

Sun May 12, 2019 8:53 pm quote
Bump, anyone have any insights?

Thanks guys
Ossessionato
1980 P200E, 1974 Primavera, 04 Ninja 250
Joined: 04 Apr 2013
Posts: 3668
Location: San Diego, CA
Mon May 13, 2019 6:50 am quote
I can't help much but by far the most common setups are Dellorto, followed by PWK. I've not seen barely anyone running Mikuni. This is probably why you are getting crickets....
Member
PX 200
Joined: 25 May 2016
Posts: 45

Mon May 13, 2019 8:25 am quote
sdjohn wrote:
I can't help much but by far the most common setups are Dellorto, followed by PWK. I've not seen barely anyone running Mikuni. This is probably why you are getting crickets....
Thanks for the reply!

I see the Mikuni seems popular in Germany... Iíve ran all 3, I started with the dellorto, which was a challenge to jet... ended up in a decent place but never had the pulling power of the PWK... but that always ended up running rich... so now ended up with the TMX... it seems to have the best torque. itís great at WOT... but not quite there yet at idle and low revs...
Ossessionato
1980 P200E, 1974 Primavera, 04 Ninja 250
Joined: 04 Apr 2013
Posts: 3668
Location: San Diego, CA
Mon May 13, 2019 9:05 am quote
I've spent over a year jacking around trying to get my PWK to jet in. But that's a different 40 page thread .
Molto Verboso
PX221 Malossi, O tuned PX200 and some motorbikes
Joined: 14 Jun 2017
Posts: 1121
Location: London UK
Tue May 14, 2019 12:08 am quote
Power jet carbs are usually best suited to very high rpm (10,000+). What is the spec of your engine?
Member
PX 200
Joined: 25 May 2016
Posts: 45

Wed May 15, 2019 7:07 am quote
Jack221 wrote:
Power jet carbs are usually best suited to very high rpm (10,000+). What is the spec of your engine?
- Malossi 210 sport cylinder and piston, 1.72mm base gasket
- Scooter and service malossi 210 low compression cylinder head
- MAZZUCCHELLI 60mm rotary crank
-extended intake port to 120degrees
- Sip clutch basket with Honda CR80 clutch plates, straight teeth
- Nordspeed Camaro

Not sure if Iíve missed anything
Member
PX 200
Joined: 25 May 2016
Posts: 45

Wed May 15, 2019 7:08 am quote
Oh and gearing has changed, canít remember what Iíve ended up on though...
Member
PX 200
Joined: 25 May 2016
Posts: 45

Wed May 15, 2019 7:36 am quote
sdjohn wrote:
I've spent over a year jacking around trying to get my PWK to jet in. But that's a different 40 page thread .
Anyone used the PwK air striker?
Member
PX 200
Joined: 25 May 2016
Posts: 45

Wed May 15, 2019 7:46 am quote
108 wrote:
Oh and gearing has changed, canít remember what Iíve ended up on though...
Found it old invoice... 24/63 teeth
Molto Verboso
One or two fun scoots....nothing too precious
Joined: 17 Jul 2013
Posts: 1006
Location: UK (South East)
Wed May 15, 2019 9:08 am quote
The 1.7mm base packer is going to put your timing up high, which implies you are after a high revving motor and peak power. Your gearing says otherwise. The 24/63 is very tall. It's what I use on my Pinasco 225 tourer, which is all about low down grunt.
Member
PX 200
Joined: 25 May 2016
Posts: 45

Wed May 15, 2019 9:18 am quote
swa45 wrote:
The 1.7mm base packer is going to put your timing up high, which implies you are after a high revving motor and peak power. Your gearing says otherwise. The 24/63 is very tall. It's what I use on my Pinasco 225 tourer, which is all about low down grunt.
Any ideas for a better gear setup? 23/62?
Molto Verboso
PX221 Malossi, O tuned PX200 and some motorbikes
Joined: 14 Jun 2017
Posts: 1121
Location: London UK
Wed May 15, 2019 9:21 am quote
23/65 is pretty good for a 221

Set up seems like you were expecting 100mph. 1.7mm packer is probably good for 10,000 rpm and on 24/63 that is 100mph at 9000 rpm. Unfortunately a 30mm carb (of any make) on a rotary is not going to get you to 100mph.

If you put your PWK back on you could copy sdjohn for set up. Would save you a few years
Molto Verboso
PX221 Malossi, O tuned PX200 and some motorbikes
Joined: 14 Jun 2017
Posts: 1121
Location: London UK
Wed May 15, 2019 9:31 am quote
For the way forward, as you have a sport and is meant for touring type riding, the base packer should come right down to about 0.50mm. Fix the squish at 1.2 or less. If you want to keep that gearing you'll most likely need a 57mm crank back in.
Member
PX 200
Joined: 25 May 2016
Posts: 45

Wed May 15, 2019 9:41 am quote
Jack221 wrote:
For the way forward, as you have a sport and is meant for touring type riding, the base packer should come right down to about 0.50mm. Fix the squish at 1.2 or less. If you want to keep that gearing you'll most likely need a 57mm crank back in.
Thanks for the insights..!

Donít mind changing the gearing... Iíve read of someone with a similar setup using 20/68...

Iím not after top speed if it takes forever to get there...

Ideally Iím after a setup which can handle city riding... on steroids...
Member
PX 200
Joined: 25 May 2016
Posts: 45

Wed May 15, 2019 9:49 am quote
Canít be right at 20/68... apparently running on 100/90-10 tires
Member
PX 200
Joined: 25 May 2016
Posts: 45

Thu May 16, 2019 4:44 am quote
Bump
Molto Verboso
PX221 Malossi, O tuned PX200 and some motorbikes
Joined: 14 Jun 2017
Posts: 1121
Location: London UK
Fri May 17, 2019 12:25 am quote
What gearing you have available? If you think you spend all your time in 3rd then it will need to be reduced.

23/65 with a 36 4th works for most, like it always did. If you are keeping the 60mm crank then the Sport kit will pull better than the MHR but but still not go near the 24/62. Easy to trim the gearing with a clutch cog or bigger tyre later on.

With the set up it seems like you wanted the MHR would have been a better choice but working with what you have the 0.5mm base I said before will be a little low. Maybe start at 1.0mm base and see how it goes. Will need to do something with the head to get the squish under 1.2mm.
Veni, Vidi, Posti
74 Super, 75 Super, PX project, LML off-roader and new to 2018, '66 Blue Badge Smallframe
Joined: 30 Nov 2011
Posts: 6780
Location: Victoria, Australia
Fri May 17, 2019 1:22 am quote
Vader ran a TMX for a while on his old Malossi 221 and told me he was never happy with it. He changed to an Airstriker and found it much better... if you search for his posts you might get some jetting tips.
Member
PX 200
Joined: 25 May 2016
Posts: 45

Fri May 17, 2019 2:28 am quote
Jack221 wrote:
What gearing you have available? If you think you spend all your time in 3rd then it will need to be reduced.

23/65 with a 36 4th works for most, like it always did. If you are keeping the 60mm crank then the Sport kit will pull better than the MHR but but still not go near the 24/62. Easy to trim the gearing with a clutch cog or bigger tyre later on.

With the set up it seems like you wanted the MHR would have been a better choice but working with what you have the 0.5mm base I said before will be a little low. Maybe start at 1.0mm base and see how it goes. Will need to do something with the head to get the squish under 1.2mm.
I was going to go onto SIP to see what gearing was available...

Sounds like 23/65 seems most sensible... I do want to keep the 60mm crank, I donít have a shorter crank on hand...

Will look at my gaskets... I do like to have a more revvy setup, but maybe I need to balance it out
Member
PX 200
Joined: 25 May 2016
Posts: 45

Fri May 17, 2019 2:35 am quote
Ginch wrote:
Vader ran a TMX for a while on his old Malossi 221 and told me he was never happy with it. He changed to an Airstriker and found it much better... if you search for his posts you might get some jetting tips.
Oh man... that doesnít give me too much confidence... I kinda like the TMX just because of the torque... but it does seem like theyíre all Dyno setups... not very practical on the street
Member
PX 200
Joined: 25 May 2016
Posts: 45

Fri May 17, 2019 3:17 am quote
Ginch wrote:
Vader ran a TMX for a while on his old Malossi 221 and told me he was never happy with it. He changed to an Airstriker and found it much better... if you search for his posts you might get some jetting tips.
Oh, and do you know if it was on a rotary setup? Would be great to know if I can apply the learnings from Vader
Veni, Vidi, Posti
74 Super, 75 Super, PX project, LML off-roader and new to 2018, '66 Blue Badge Smallframe
Joined: 30 Nov 2011
Posts: 6780
Location: Victoria, Australia
Fri May 17, 2019 3:51 am quote
No, reed. Now that I think about it the other reason to change was due to space restrictions... it was in his Super I believe.

Have you looked for similar setups here?
http://lfs.alexander-hepp.de/
Member
PX 200
Joined: 25 May 2016
Posts: 45

Fri May 17, 2019 4:42 am quote
Ginch wrote:
No, reed. Now that I think about it the other reason to change was due to space restrictions... it was in his Super I believe.

Have you looked for similar setups here?
http://lfs.alexander-hepp.de/
Thatís my go to website... so Iíve tried all the settings for 221 rotary setups... all not quite right... good for general direction...

Iíve setup my tmx similar to one setup in the list... but the gearing is insane... 20/68... means itís a revving monster!
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