REFLECTOR: FRANKLIN CARBURETOR
michalk
michalk at awpi.com
Thu Feb 2 13:10:42 CST 2006
The Franklin has a high overlap cam. The torque curves show that it
won't make good horsepower at the lower RPM's. It really works better
with a variable prop.
Scott Derrick wrote:
> Larry,
>
> I bought a Catto Prop that had originally been built for a 225 HP
> Franklin, but it wouldn't turn up high enough at static.
>
> I ran it on a 200 HP Lyc and it was fine..
>
> weird huh?
>
> Scott
>
> Larry Parham wrote:
>
>> Surging is only part of the problem. I did fix most of it with a
>> manafold inlet gasket. The other problem is Not Enough RPM. The last
>> one inch of throttle does not deliver any more RPM. In fact it may
>> even go down a little. I only get around 2200 and doing a mag check
>> at 1700, it would drop to 1200 and slowly build up to 1700 (10 sec) on
>> both L and R. An hour earlier I got 2330 with a good mag check on R
>> and L and could lean to 2380. Carb heat and Idle cut off seem to good.
>> ------------------------------------------------------------------------
>>
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