Main Menu
Advertisement
Affiliates
Advertisement
Newest Members
rndtuit, Carp3, mattchovanec86, fishfinder05, vanellem
104045 Registered Users
Top Posters
TexDawg 84264
hopalong 76090
Pilothawk 74258
JDavis7873® 67380
John175 ® 62239
FattyMcButterpants 60649
Tritonman 57330
Derek 57204
SkeeterRonnie 52735
LoneStarSon® 52608
facebook
Forum Stats
104045 Members
61 Forums
833752 Topics
11910080 Posts

Max Online: 36273 @ 01/23/13 02:34 PM
Page 1 of 2 1 2 >
Topic Options
#11303538 - 12/25/15 05:19 PM Jasper lower unit?
stratos1 Offline
Outdoorsman

Registered: 12/09/04
Posts: 25
Loc: richland hills
Can a lower unit cause loss of rpm ? And why ?

Top
#11303762 - 12/25/15 08:17 PM Re: Jasper lower unit? [Re: stratos1]
Dubee Online   content
Extreme Angler

Registered: 07/17/11
Posts: 1364
Loc: Godley Tx
Yes

Top
#11303854 - 12/25/15 09:29 PM Re: Jasper lower unit? [Re: stratos1]
kingdad101 Offline
TFF Guru

Registered: 10/24/05
Posts: 20729
Loc: W.F. Texas
does it have the same gear ratio as the old one...
_________________________

Top
#11304171 - 12/26/15 08:52 AM Re: Jasper lower unit? [Re: stratos1]
stratos1 Offline
Outdoorsman

Registered: 12/09/04
Posts: 25
Loc: richland hills
It has the gear ratio as the motor year calls for,1998 Evinrude 225. Dubee, you say yes. Besides gear ratio how?
Never checked the ratio before the other one trashed, so really don't no.

Top
#11304242 - 12/26/15 09:47 AM Re: Jasper lower unit? [Re: stratos1]
TLW Online   content
Extreme Angler

Registered: 11/16/06
Posts: 2058
Loc: ft worth
how many rpm lost?

Top
#11304280 - 12/26/15 10:05 AM Re: Jasper lower unit? [Re: stratos1]
stratos1 Offline
Outdoorsman

Registered: 12/09/04
Posts: 25
Loc: richland hills
between 400 to 500 rpms

Top
#11304293 - 12/26/15 10:13 AM Re: Jasper lower unit? [Re: stratos1]
Flippin-Out Offline
Extreme Angler

Registered: 02/25/15
Posts: 1627
Loc: Magnolia, TX
Could the prop have been damaged (bent) and not noticed?

Top
#11304294 - 12/26/15 10:14 AM Re: Jasper lower unit? [Re: stratos1]
stratos1 Offline
Outdoorsman

Registered: 12/09/04
Posts: 25
Loc: richland hills
Had the pitch on the prop changed from 24 to 22, got rpms back up to 5800. What is weird is the 24 pitch 4 blade will run 6000 rpms. Both are 14 1/4.
The rpm drop was right after new lower unit put on.

Top
#11304297 - 12/26/15 10:15 AM Re: Jasper lower unit? [Re: stratos1]
stratos1 Offline
Outdoorsman

Registered: 12/09/04
Posts: 25
Loc: richland hills
No prop damage.

Top
#11304336 - 12/26/15 10:37 AM Re: Jasper lower unit? [Re: stratos1]
Dubee Online   content
Extreme Angler

Registered: 07/17/11
Posts: 1364
Loc: Godley Tx
Could be gears not meshing correctly.

Top
#11304344 - 12/26/15 10:41 AM Re: Jasper lower unit? [Re: stratos1]
TLW Online   content
Extreme Angler

Registered: 11/16/06
Posts: 2058
Loc: ft worth
sounds like a different gear... if something wrong and/or bad in tha gear case usually it (or motor) isn't long for this world...


Edited by TLW (12/26/15 10:44 AM)

Top
#11304473 - 12/26/15 12:16 PM Re: Jasper lower unit? [Re: stratos1]
stratos1 Offline
Outdoorsman

Registered: 12/09/04
Posts: 25
Loc: richland hills
Does to me to.

Top
#11305476 - 12/26/15 11:04 PM Re: Jasper lower unit? [Re: stratos1]
LOSTTEXAN Offline
Outdoorsman

Registered: 05/10/09
Posts: 43
Loc: Pensacola, Fl
I'm thinking Different gear.

You haven't talked about GPS speed difference, which would clue us in.
_________________________
Grew up on Tawakoni and Texoma before hybrids and stripers existed on either.

Top
#11305750 - 12/27/15 09:22 AM Re: Jasper lower unit? [Re: stratos1]
stratos1 Offline
Outdoorsman

Registered: 12/09/04
Posts: 25
Loc: richland hills
Went from right at 70 to 62 gps.

Top
#11306774 - 12/27/15 06:01 PM Re: Jasper lower unit? [Re: stratos1]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10863
Loc: Littlefield Tx & Lake A. H. US...
Sounds like you got a 1.75-1 instead of a 1.86-1
_________________________
“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

Top
Page 1 of 2 1 2 >



© 1998-2017 OUTDOOR SITES NETWORK all rights reserved USA and Worldwide