Choke & throttle & fording knobs

skyjeep50 · Post by **skyjeep50** » Sat Apr 18, 2015 9:12 am

In Ryan Miller's book "M38 Reference Guide" the photos on page 25, 27, 42, 142 show 2 t-handles and a knob. And in the Controls section on page 125 it shows the a closeup of the differences between M38 and M38A1 throttle t-handle knobs and a diagram with 2 t-handles and a round choke knob. I suspect that the drawn parts diagrams showing round knobs for throttle and fording are that way because the artist just didn't put in that small detail. The t-handles in every photo are aligned left-right so in drawing them from the side - they would look like round knobs unless you put in the tiniest detail showing the T in side view. I think the photos are more correct that drawn parts diagrams.

4x4M38 · Post by **4x4M38** » Sat Apr 18, 2015 4:00 pm

I do not believe that Fig. 5 Instruments and Controls TM9
804 above is a drawing and without a doubt shows a round
throttle knob.

Post by **wesk** » Sat Apr 18, 2015 5:22 pm

I could agree with that assessment. So You are saying this drawing's artwork is suspect:

And you then said:

I think the photos are more correct that drawn parts diagrams.

So these frontal photos in the TM's are accurate?

But In Ryan's M38 Guide there are a total of 7 photos of the dash and 4 have round knobs and 3 have "T" knobs.

His photo on page 125 has no origins in any of the M38 TM's or ORD 9's yet it has the same artwork appearance of those ORD 9 photos. I will guess it is a photo/artwork from one of the 7 pilot M38's and probably # 7 pilot since that's the only pilot that has a dash photo showing a "T" handle throttle.

None of this photo artwork has 100% reliability since it has all been doctored a bit. I have only seen one photo that offers any solid evidence to the "T" type throttle control.

4x4M38 · Post by **4x4M38** » Sat Apr 18, 2015 6:57 pm

Hi Wes,
Yes that is the 238 series delivery photo that I was referencing
as having a t handle.

Was there a change between the 236's and 238's?

Your part numbers do not indicate.

Fun running this stuff down

Again, motor pool you can do either it seems.

Post by **wesk** » Sat Apr 18, 2015 10:17 pm

The 236 hood numbers include about the first 4000 M38's built Sep 1950 thru Jan/Feb 1951 under contract W-20-089-ORD-4758. The 238 hood numbers encompass Jan/Feb 51 thru about Mar/Apr 51 which would be the 2nd batch of about 6600 M38's under contract DA-20-018-ORD-9196. May 51 was the switch from the 7 digit hood numbers to the 8 digit hood numbers.

WillysMotors · Post by **WillysMotors** » Sun Apr 19, 2015 6:12 pm

Wes,

801683 has always been a T handle.

I'll try to post the profile dimensions.

Post by **wesk** » Sun Apr 19, 2015 6:15 pm

Thanks Keith. The only document I could locate with dimensions was the 1963 doc. Can you email me the early 50's drawing?

WillysMotors · Post by **WillysMotors** » Sun Apr 19, 2015 8:06 pm

It's big, and faded, but I'll try.