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 hammer on hdr 40 efi? 
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Joined: Sun Sep 29, 2013 7:56 pm
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Post hammer on hdr 40 efi?
anyone run a hammer on a stock hdr 40 efi. have a 1854 prodigy with 25th hdr can spin a big blade to 4400 and beyond just looking for a little more hole shot under load. have a raptor also although its alot smoother and handles better not giving me the get up and go id like.


Thu Dec 20, 2018 10:01 am
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Post Re: hammer on hdr 40 efi?
Hammer will get on plane quick but is about 2mph slower.


Thu Dec 20, 2018 6:28 pm
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Post Re: hammer on hdr 40 efi?
Gnspeed is right. I run a fat blade on my GTR 40, which is almost identical to the hammer and it is a couple slower on the top end but the holeshot is second to none and it carries a load extremely well


Thu Dec 20, 2018 7:39 pm
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Location: Middle ga
Post Re: hammer on hdr 40 efi?
Yes you can run a hammer on the new 40 with no problems. Some people say they can turn them with stick 37s, I call BS on being able to turn it effectively on the stock 37’s.


Fri Dec 21, 2018 7:02 am
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Post Re: hammer on hdr 40 efi?
You might be able to turn it, BUT its going to lug the motor....

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Fri Dec 21, 2018 7:44 am
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Location: Muscatine, Iowa
Post Re: hammer on hdr 40 efi?
What rpm is concidering luging motor? I think most stock Big Block Briggs build their best power between 3600-3800 rpm.


Fri Dec 21, 2018 9:51 am
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Post Re: hammer on hdr 40 efi?
I run my fat blade at 4500


Fri Dec 21, 2018 1:01 pm
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Location: Muscatine, Iowa
Post Re: hammer on hdr 40 efi?
I can run my Hammer upto the 4700 rpm rev. limiter in my coils, but very seldom do it. My motor is getting some hrs. on it and I want it to last a few more seasons. I run 3800-4000 rpm . Going to try a Rapture this summer, to see how it does. Motor is 45 mag. with BPS internals and heads.


Fri Dec 21, 2018 2:26 pm
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Post Re: hammer on hdr 40 efi?
Instead of the raptor, run a mercury rapid. You will thank me for this information lol


Fri Dec 21, 2018 8:21 pm
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Location: Muscatine, Iowa
Post Re: hammer on hdr 40 efi?
Tried a Mercury 3 Bld, was on rev. limiter at about 2/3 throttle. Thought maybe raptor with its 1" extra pitch may help. My rig is very light, and takes very little to plane it.


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Sat Dec 22, 2018 11:45 am
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Post Re: hammer on hdr 40 efi?
The merc 3 blade and the merc rapid are two completely different props. The rapid is a 12 pitch out the box if I remember correctly


Sat Dec 22, 2018 8:16 pm
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Post Re: hammer on hdr 40 efi?


Wed Dec 26, 2018 12:17 pm
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Post Re: hammer on hdr 40 efi?
Call gatortail and you can get them for 300 directly. Send it to baggy after you get it


Wed Dec 26, 2018 2:14 pm
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