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Re: RT or not RT...this is the question

PostPosted: Thu Jan 31, 2019 9:43 pm
by Leotech
dickie wrote:
Leotech wrote:I have an RT225 kit in my series 2 with a 60x110 rod, packed cylinder base to set squish to 1.2.

It has a 30 PHBH with filter, BGM v3 pipe and an LTH reed.

I love it. Pulls high gearing and cruises 65 easily. 10 miles per litre of fuel.

LI150 gearbox 18-46 4.34 final drive. Varitronic ignition.


I love it


Tuned I guess though?



No. Just assembled and the base packed to achieve the 1.2 squish.

Re: RT or not RT...this is the question

PostPosted: Thu Jan 31, 2019 11:36 pm
by rossclark
I've just bit the bullet and bought one for my kitty

Re: RT or not RT...this is the question

PostPosted: Tue Mar 05, 2019 6:09 pm
by Lockman69
rossclark wrote:I've just bit the bullet and bought one for my kitty


How's the RT ?

Re: RT or not RT...this is the question

PostPosted: Tue Mar 05, 2019 7:03 pm
by rossclark
Goes together nicely, though I did have a minor issue with the base gasket face touching the mag flange which was soon sorted with a file. I just got the engine back in the frame on Sunday so still to cable it and connect it.

I have no garage so weather is a factor in my spannering and it's not pleasant just now so might be another few days till I can get it running.

I'll keep you posted

Re: RT or not RT...this is the question

PostPosted: Wed Mar 06, 2019 9:01 am
by Meds
Anyone changed an RT225 to reed and what difference did it make?

Re: RT or not RT...this is the question

PostPosted: Wed Mar 06, 2019 10:31 am
by ULC Soulagent
More pulling power bottom n midrange plus fuel consumption is miles better

Re: RT or not RT...this is the question

PostPosted: Wed Mar 06, 2019 8:58 pm
by ToBoldlyGo
ULC Soulagent wrote:More pulling power bottom n midrange plus fuel consumption is miles better


More? Blimey, my 225 goes like a rocket as it is. :o

Re: RT or not RT...this is the question

PostPosted: Mon Mar 11, 2019 10:49 am
by Meds
ULC soulagent-
What mods did you make to do the conversion?
I was thinking about using an aftermarket Reed and getting the kit supplied with a reed piston.
Your help would be appreciated

Re: RT or not RT...this is the question

PostPosted: Mon Mar 11, 2019 10:59 am
by Scooterdude
Meds wrote:ULC soulagent-
What mods did you make to do the conversion?
I was thinking about using an aftermarket Reed and getting the kit supplied with a reed piston.
Your help would be appreciated

When I got mine Mark swapped the the supplied piston for the reed version for the difference in cost between the two (just a few quid) the supplied reeds are apparently for a Derby senda and are from Boyesen.

You can get mallossi Derby reeds in a pack containing three thickness’s.

Re: RT or not RT...this is the question

PostPosted: Mon Mar 11, 2019 11:58 am
by Meds
Thanks- so no mods to the barrel inlet

Re: RT or not RT...this is the question

PostPosted: Mon Mar 11, 2019 3:25 pm
by ULC Soulagent
Sorry for delayed reply, mine has the Broady touring tune with cases matched,standard derbi reeds but have bought some performance reeds for spare.i just run 25 delly carb as I’m more interested in bottom n midrange grunt than top speeds theses days but 75mph is more than ample for overtaking hgv. Also has 60/110 crank.

Re: RT or not RT...this is the question

PostPosted: Mon Mar 11, 2019 3:41 pm
by Meds
Cheers: - sounds like a good set up

Re: RT or not RT...this is the question

PostPosted: Wed Mar 20, 2019 1:44 am
by corrado
I would imagine that MB would advise putting a boost port in the barreL

Re: RT or not RT...this is the question

PostPosted: Wed Mar 20, 2019 8:41 am
by Scooterdude
corrado wrote:I would imagine that MB would advise putting a boost port in the barreL



Yes my MB touring tune has a boost port, im guessing having one is a necessity of any reed conversion though?

Re: RT or not RT...this is the question

PostPosted: Wed Mar 20, 2019 9:43 pm
by corrado
Scooterdude wrote:
I'm guessing having a boost port is a necessity of any reed conversion though?


I've not got a boost port in my Mugello with Atomic / LTH reed, as it was a very basic build by myself and I don't have the tools or skill set to add one. That being said it performs great, far better than before the reed valve. It's only issue is the amount of spitback from the TMX27 Mikuni carb and yet it's still good on fuel.

Re: RT or not RT...this is the question

PostPosted: Sat Apr 13, 2019 11:27 pm
by rossclark
Lockman69 wrote:
rossclark wrote:I've just bit the bullet and bought one for my kitty


How's the RT ?


Had to change the clutch as the four plate was slipping on the kickstart due to the compression. I've put the Readspeed 5 plate in.

MOT'd it on Friday and it's now done about 80k. Running it in and getting the carb dialled in, very little spit back at all.

Currently on -

Phbh30 with BGM hose and Filter
300 float valve
70 choke
50 pilot
AV 264 atomiser
x7 P2 needle
122 main
BGM v4 clubman
Fixed ignition on 18°

Pulls nicely and feels like it really wants to go. Standard SX 200 gearing.

Re: RT or not RT...this is the question

PostPosted: Sun Apr 14, 2019 10:18 pm
by Lockman69
rossclark wrote:
Lockman69 wrote:
rossclark wrote:I've just bit the bullet and bought one for my kitty


How's the RT ?


Had to change the clutch as the four plate was slipping on the kickstart due to the compression. I've put the Readspeed 5 plate in.

MOT'd it on Friday and it's now done about 80k. Running it in and getting the carb dialled in, very little spit back at all.

Currently on -

Phbh30 with BGM hose and Filter
300 float valve
70 choke
50 pilot
AV 264 atomiser
x7 P2 needle
122 main
BGM v4 clubman
Fixed ignition on 18°

Pulls nicely and feels like it really wants to go. Standard SX 200 gearing.


Nice one Ross

Re: RT or not RT...this is the question

PostPosted: Mon Apr 15, 2019 2:18 pm
by hullygully
Be interesting to open one up and have a peak inside (PM sent).

Re: RT or not RT...this is the question

PostPosted: Thu May 02, 2019 12:20 am
by rossclark
Still running it in, did 110K on Sunday, now up to about 300k odd and expect to get it fully run in by the time we are done with the Bulldog run on the weekend. Had it up close to 100 kph for short blasts and feels like it has more to give. It feels a little short at the top so might up the main as I finish the running in and longer periods with more throttle to see how it goes.

On the long run at the weekend filled it before I left and again at 100K it took 4 litres so getting approx 25K to the litre (15.6 miles)

Re: RT or not RT...this is the question

PostPosted: Thu May 02, 2019 10:52 am
by coaster
rossclark wrote:Still running it in, did 110K on Sunday, now up to about 300k odd and expect to get it fully run in by the time we are done with the Bulldog run on the weekend. Had it up close to 100 kph for short blasts and feels like it has more to give. It feels a little short at the top so might up the main as I finish the running in and longer periods with more throttle to see how it goes.

On the long run at the weekend filled it before I left and again at 100K it took 4 litres so getting approx 25K to the litre (15.6 miles)


I think your K and M keys might be transposed Ross ;)