Like Tree0Likes

MPH difference huber vs. crashbox???

Old 12-19-2010, 12:05 PM
Brad Zastrow's Avatar
Join Date: Jun 2001
Location: McHenry, Illinois
Posts: 2,244

I had transmissions, converted to crash boxes after blowing transmissions and have since switched back. I could not see any performance difference but have been told crash boxes are a few mph faster. The docking with crash boxes was a bit tricky but I never had an issue. I just wanted the boat to be more user friendly.
I now have Ateco rebuild my transmissions once a year and have not lost one yet.
Brad Zastrow is offline  
Reply With Quote
Old 12-19-2010, 12:34 PM
Platinum Member
Platinum Member
Steve 1's Avatar
Join Date: Apr 2001
Location: Beautiful Fort Lauderdale
My Boats: Slippery when wet!
Posts: 10,833

Originally Posted by HabanaJoe View Post
Steve 1 - very astute remark

If it makes enough heat to need the oil cooled it's taken some Hp to make that heat - the more cooling the more Hp - good analogy!

Sir yes Thank you.
Steve 1 is offline  
Reply With Quote
Old 12-19-2010, 12:48 PM
Gold Member
Gold Member
h2oboater's Avatar
Join Date: Dec 2003
Location: NewBaltimore Mi
My Boats: 1973 Donzi X-18 1975 Donzi Doral 1973 Magnum Sport 1973 Sedan Magnum & SMIDGEN Too 1975 24' Cobra
Posts: 3,372

Originally Posted by wjb21ndtown View Post
I can't see that being the case. To the best of my knowledge a trans usually only eats about 35Hp. Boat transmissions are pretty basic, especially compared to automotive transmissions with multiple gears. You really think a Corvette or Mustang stick has an extra 100hp over an automatic?

Everything I've seen and know suggest that it's only about a 25-35 hp loss to run a transmission A crashbox is going to eat something, but given that the total loss is 25-35 the difference in Hp loss is going to be minimal.
Back in the early 90's APBA changed the rules for D class. We had to switch out our crash boxes to transmissions. [Huber] In testing at Lake X we found we lost nothing in speed with the Eastern Express Skater.
h2oboater is offline  
Reply With Quote
Old 12-20-2010, 08:02 AM
Offshoreonly Advertiser
Offshoreonly Advertiser
Mbam's Avatar
Join Date: Mar 2001
Location: Pompano Beach FL, USA
My Boats: 1972 Cigarette 36 race
Posts: 2,048

We measure the loss on evey one we build

Measured at 5000 RPM, our standard is 12-14 ft lbs, our dry sump is 8-10 ft lbs. A stock velvet drive is 15-20

And a crash box is about 2 ft lbs. So the percentage differance is large, but it is still a pretty small number.
It's alive - additional 10% discount for OSO members
Mbam is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -5. The time now is 04:50 PM.

Copyright 2011 OffShoreOnly. All rights reserved.