Quote
Originally posted by Denny Graham:

Aren't Buna-N sheet goods available that would work with alcohol? And couldn’t The Carburetor Shop manufacture a stem and Buna-N pump for a replacement?
Denny Graham
Sandwich, IL
The diaphragm used on the YF has a convolution; this means a steam die to reproduce the parts. The Carburetor Shop buys their diaphragms for the YF from the same suppliers (there are two) as every one else; and thus obtains the same material as every one else. Steam dies are EXPENSIVE and require LARGE quantity sales to pay off. I have requested both manufacturers to use the fluerolastimer (sp?) nitrile rubber compounds, but so far, neither has done so; stating insufficient demand, and significantly increased cost.

At this point in time, the large suppliers are scaling back on carburetor parts production, not increasing their production; again due to demand.

Steam dies are not in the budget of The Carburetor Shop.

Jon.

Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop