RD Reed valve modification

[5port]

 

[DJ]

good question, I couldn't find one either so I installed YZ125 reed valves in the race bike , needed some mods to the barrels though, I have read on another forum that TDR reed petals will fit but they are very stiff. sorry not much help.

[german]

Hi Chris,
I have seen that often but never asked the guys what reeds they used. But some I see looked like the stock pedals.
I have read in a magazine that Boyesen reeds are common for that modify. I am pretty sure that I have a shoot of this magazine article anywhere on my computer.
Cheers Uwe

[Dave Bowers]

Ron at fahron modified mine by removing the centre bar and told me to use kx 80 reeds if that is any help.

[T reg angst]

TDR reeds= tony ducas racing

[german]

Hi,
a german friend has developed reed petals together with a carbon reed manufacturer for this cage modification we talk about. I didn`t knew this. In fact nobody knew this. I got pictures and info this morning shortly before he posted it on the german forum.
The reeds rigidy are based on a petal a well know RD guru(who died a few years ago) done this back in the 80tees and 90tees. My friend had bought the whole stock of the petals back then. As he owns and restored many RD`s he got out of stock and searched for a solution. The petals are now manufactured by a company who do reed petals for many other bikes. But this special petals are build from stronger fibre and tighter weaved fibre to match the characteristics of the glasssfibre reeds of the former RD guru.
They are available now here: http://www.carbon-werkstatt.de/shop/Startseite
But they are not yet on his website that brand new are these infos. Sale price will be 35 Euro + shipping(Registered letter) for both reed blocks.
Here the pictures. First 2 are the reeds from the guru, the other 2 the new ones.




He also has the carbon reeds for all RD`s as replacement for the genuine ones. These cost 26 Euro + shipping.
If I could help someone with purchaseing the parts just ask. Website is only in german. Update for this: I have just seen that his website is partly english. So at least he speaks english. Please refer to the "Heiner Jakob reed petals". He is the guy who developed them with the manufacturer together.
Cheers Uwe

[Dave Bowers]

Ron did a 370 conversion for me so I cant comment on just the reeds but the bike runs well but i need to sort my jetting as it is maybe abit rich but atleast it isnt holeing pistons.

[stpierre]

I don’t know if this helps but I think you can get these but it’s for a banshee 350 with small mods they fit.
http://www.mototassinari.com/

[stpierre]

This may help?

http://erlenbachracing.net/reedcages%20mods.htm

[german]

I don’t know if this helps but I think you can get these but it’s for a banshee 350 with small mods they fit.
http://www.mototassinari.com/

Hi stpierre,
the V-Force reeds are not a close fit. It is needs more than a little grinding. And they are expensive. Friends in germany have done a back to back dyno test with standard versus V-Force on a YPVS. Nearly no difference at all. In my opinion not worth the money.
Cheers Uwe

[stpierre]

I don’t know if this helps but I think you can get these but it’s for a banshee 350 with small mods they fit.
http://www.mototassinari.com/

Hi stpierre,
the V-Force reeds are not a close fit. It is needs more than a little grinding. And they are expensive. Friends in germany have done a back to back dyno test with standard versus V-Force on a YPVS. Nearly no difference at all. In my opinion not worth the money.
Cheers Uwe

Thanks for the info so what do you think the best setup is?

[german]

I don’t know if this helps but I think you can get these but it’s for a banshee 350 with small mods they fit.
http://www.mototassinari.com/

Hi stpierre,
the V-Force reeds are not a close fit. It is needs more than a little grinding. And they are expensive. Friends in germany have done a back to back dyno test with standard versus V-Force on a YPVS. Nearly no difference at all. In my opinion not worth the money.
Cheers Uwe

Thanks for the info so what do you think the best setup is?

Hi stpierre,
the best setup is simply not to say. It depends on a lot of factors an engine will be build. First you have to know for what purposes you need it. Street, trackday, race? Should it be a reliable engine or a race engine which is build to the limits? Which cylinders you use? Ported? Which carbs? Which exhausts?.
You see, there is no: What will be best?
All someone can say is what worked for himself.
For example: the fastest aircooled race RD in Germany is not the bike with the the highend parts on it or the biggest money pit. It is a bike which is clever engineered and built and top of that has a fantastic rider. All these components together made it fast.
Cheers Uwe

[Airhead]

Just seen this thread

I have a reed cage with the central bit removed, it had one piece fiber reeds in like Chris (T Reg) posted a pic of but they were a little bent.

anyway i mulled over V force as Uwe stated theres a fair bit of grinding out to be done and with barrels being hard to find and expensive I shelved that idea....I really wanted new reeds for this cage I have, eventually I found this and they are 'bang on'

My bike is a DT175 but I reckon the reeds are just the same as RD's, the seller lists the dimensions of the reeds anyhow. I bought some and they fit well, though I have yet to fit them to the bike

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=230951319570#ht_1677wt_721

[[motoholic71]]

Best suited Vforce for the aircooled RDs is the yz85 upgrade since is a few mm narrower than the banshee/rz,makes a big improvement on low and mid range.
I have v force on a RZ and it was best investment as bolt on power,

[stpierre]

Vforce is made 30 mins from here let me see if he can make some just for the RD?