TRX250R.ORG

Classifieds => For Sale => For Sale - Parts => Topic started by: Trx370r on September 03, 2013, 07:59:48 PM

Title: Boyesen Rad Valve
Post by: Trx370r on September 03, 2013, 07:59:48 PM

110shipped only ran less then 5hrs on the dyno went with a different set up.

Title: Boyesen Rad Valve
Post by: Trx370r on September 04, 2013, 04:59:57 PM

Bump Obo

Title: Boyesen Rad Valve
Post by: Pumashine on September 04, 2013, 05:06:45 PM

I hear those reeds last alot longer than the carbon fiber ones

Title: Boyesen Rad Valve
Post by: jcs003 on September 04, 2013, 11:56:27 PM

Quote from: Pumashine;11034

I hear those reeds last alot longer than the carbon fiber ones

i heard that too.

john

Title: Boyesen Rad Valve
Post by: C-Leigh Racing on September 06, 2013, 10:23:45 AM

You would think it would be the other way around, carbon fiber last longer, but not that I have used.
The real problem all together, no reed stops. If there was a reed stop on the cage, that would add a bed for the reed petals to lay on as they opened, but as it is  now the reeds are allowed to open up freely in any manner they want.
A reed stop, would keep the ends of the petals from slapping the reed chamber when the fully open at high rpms, which results in the petals being bent on the ends & finely cracking or chipping the petals.
The fiber glass reeds do last longer though, but soon or later they will give up.
No reed stop & you have a better acting reed cage, but we pay the price of having to replace petals sooner.

McMaster Carr, sells fiber glass & carbon fiber sheets in different thicknesses, so maybe its time for some testing on different designs of reed petals.
Thicker the material used, more it is suited for higher rpm ranges, thin, low rpms where the reeds will respond easier. Thin though in high rpms, will flutter & distort & resulting effect will be hp loss.
Neil

Title: Boyesen Rad Valve
Post by: Trx370r on September 16, 2013, 09:32:25 PM

Sold